PR from branch users/jansenin/static-config-validation2

tests for static validator

add static validator builder part and make make enums case-insensitive

19 files changed, 1481 insertions, 58 deletions

diff --git a/.mapping.json b/.mapping.json
index 370dc51695..7c0ee71c47 100644
--- a/.mapping.json
+++ b/.mapping.json
@@ -6624,6 +6624,11 @@
   "ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-x86_64.txt":"",
   "ydb/library/yaml_config/static_validator/ut/CMakeLists.txt":"",
   "ydb/library/yaml_config/static_validator/ut/CMakeLists.windows-x86_64.txt":"",
+  "ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.darwin-x86_64.txt":"",
+  "ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-aarch64.txt":"",
+  "ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-x86_64.txt":"",
+  "ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.txt":"",
+  "ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.windows-x86_64.txt":"",
   "ydb/library/yaml_config/ut/CMakeLists.darwin-x86_64.txt":"",
   "ydb/library/yaml_config/ut/CMakeLists.linux-aarch64.txt":"",
   "ydb/library/yaml_config/ut/CMakeLists.linux-x86_64.txt":"",
diff --git a/ydb/library/yaml_config/static_validator/builders.cpp b/ydb/library/yaml_config/static_validator/builders.cpp
index e38ff01938..64f778530d 100644
--- a/ydb/library/yaml_config/static_validator/builders.cpp
+++ b/ydb/library/yaml_config/static_validator/builders.cpp
@@ -7,13 +7,17 @@ using namespace NYamlConfig::NValidator;
 using namespace NYamlConfig::NValidator::Configurators;
 
 TArrayBuilder HostConfigBuilder() {
-  return TArrayBuilder([](auto& b) {b
+  return TArrayBuilder([](auto& hostsConfig) {
+    hostsConfig
     .Configure(uniqueByPath("host_config_id"))
-    .MapItem([](auto& b) {b
+    .MapItem([](auto& host) {
+      host
       .Int64("host_config_id", nonNegative()) // >= 0?
-      .Array("drive", [](auto& b) {b
+      .Array("drive", [](auto& drive) {
+        drive
         .Configure(uniqueByPath("path"))
-        .MapItem([](auto& b) {b
+        .MapItem([](auto& driveItem) {
+          driveItem
           .String("path")
           .Enum("type", {"ssd", "nvme", "rot"});
         });
@@ -23,33 +27,38 @@ TArrayBuilder HostConfigBuilder() {
 }
 
 TArrayBuilder HostsBuilder() {
-  return TArrayBuilder([](auto& b){b
-    .MapItem([](auto& b) {b
+  return TArrayBuilder([](auto& hosts){
+    hosts
+    .MapItem([](auto& host) {
+      host
       .String("host")
       .Int64("host_config_id", nonNegative())
-      .Int64("node_id", nonNegative())
-      .Int64("port", 0, 65535)
-      .Map("location", [](auto& b){b
-        .String("unit")
-        .String("data_center")
-        .String("rack");
+      .String("node_id", [](auto& nodeId){
+        nodeId.Optional();
+      })
+      .Int64("port", [](auto& port){
+        port
+        .Range(0, 65535)
+        .Optional();
       });
     })
     .Configure(uniqueByPath("node_id"))
-    .AddCheck("Must not have to hosts with same host name and port", [](auto& c) {
-      auto array = c.Node();
+    .AddCheck("Must not have two hosts with same host name and port", [](auto& hostsContext) {
+      auto array = hostsContext.Node();
       THashMap<std::pair<TString, i64>, i64> itemsToIndex;
 
       for (int i = 0; i < array.Length(); ++i) {
         TString host = array[i].Map()["host"].String();
-        i64 port = array[i].Map()["port"].Int64();
+        auto portNode = array[i].Map()["port"];
+        i64 defaultPort = 19001;
+        i64 port = portNode.Exists() ? portNode.Int64() : defaultPort;
         auto item = std::pair{host, port};
 
         if (itemsToIndex.contains(item)) {
           TString i1 = ToString(itemsToIndex[item]);
           TString i2 = ToString(i);
 
-          c.Fail("items with indexes " + i1 + " and " + i2 + " are conflicting");
+          hostsContext.Fail("items with indexes " + i1 + " and " + i2 + " are conflicting");
         }
         itemsToIndex[item] = i;
       }
@@ -58,9 +67,12 @@ TArrayBuilder HostsBuilder() {
 }
 
 TMapBuilder DomainsConfigBuilder() {
-  return TMapBuilder([](auto& b){b
-    .Array("domain", [](auto& b){b
-      .MapItem([](auto& b){b
+  return TMapBuilder([](auto& domainsConfig){
+    domainsConfig
+    .Array("domain", [](auto& domain){
+      domain
+      .MapItem([](auto& domainItem){
+        domainItem
         .String("name")
         .Field("storage_pool_types", StoragePoolTypesConfigBuilder());
       });
@@ -71,44 +83,58 @@ TMapBuilder DomainsConfigBuilder() {
 }
 
 TArrayBuilder StoragePoolTypesConfigBuilder() {
-  return TArrayBuilder([](auto& b){b
-    .MapItem([](auto& b){b
+  return TArrayBuilder([](auto& storagePoolTypes){
+    storagePoolTypes
+    .MapItem([](auto& storagePoolType){
+      storagePoolType
       .String("kind")
-      .Map("pool_config", [](auto& b){b
+      .Map("pool_config", [](auto& poolConfig){
+        poolConfig
         .Int64("box_id", nonNegative())
-        .Int64("encryption", [](auto&b){b
+        .Int64("encryption", [](auto&encryption){
+          encryption
           .Range(0, 1)
           .Optional();
         })
         .Enum("erasure_species", {"none", "block-4-2", "mirror-3-dc", "mirror-3dc-3-nodes"})
         .String("kind")
-        .Array("pdisk_filter", [](auto& b){b
-          .MapItem([](auto& b){b
-            .Array("property", [](auto& b){b
-              .MapItem([](auto& b){b
+        .Array("pdisk_filter", [](auto& pdiskFilter){
+          pdiskFilter
+          .MapItem([](auto& pdiskFilterItem){
+            pdiskFilterItem
+            .Array("property", [](auto& property){
+              property
+              .MapItem([](auto& propertyItem){
+                propertyItem
                 .Enum("type", {"ssd", "nvme", "rot"});
               });
             });
           });
         });
-      })
-      .Configure(mustBeEqual("kind", "pool_config/kind"));
+      });
+      storagePoolType.Configure(mustBeEqual("kind", "pool_config/kind"));
     });
   });
 }
 
 TArrayBuilder StateStorageBuilder() {
-  return TArrayBuilder([](auto& b){b
-    .MapItem([](auto& b){b
-      .Map("ring", [](auto& b){b
-        .Array("node", [](auto& b){b
-          .Int64Item(nonNegative());
+  return TArrayBuilder([](auto& stateStorage){
+    stateStorage
+    .MapItem([](auto& stateStorageItem){
+      stateStorageItem
+      .Map("ring", [](auto& ring){
+        ring
+        .Array("node", [](auto& node){
+          node.Int64Item(nonNegative());
         })
         .Int64("nto_select", nonNegative())
-        .AddCheck("nto_select must not be greater, than node array size", [](auto& c){
-          i64 nto_select = c.Node()["nto_select"].Int64();
-          i64 arr_size = c.Node()["node"].Array().Length();
-          c.Expect(nto_select <= arr_size);
+        .AddCheck("nto_select must not be greater, than node array size", [](auto& ringContext){
+          i64 nto_select = ringContext.Node()["nto_select"].Int64();
+          i64 arr_size = ringContext.Node()["node"].Array().Length();
+          ringContext.Expect(nto_select <= arr_size);
+        })
+        .AddCheck("nto_select should be odd, because even number usage doesn't improve fault tolerance", [](auto& ringContext){
+          ringContext.Expect(ringContext.Node()["nto_select"].Int64() % 2 == 1);
         });
       })
       .Int64("ssid", nonNegative());
@@ -117,10 +143,168 @@ TArrayBuilder StateStorageBuilder() {
 }
 
 TMapBuilder SecurityConfigBuilder() {
-  return TMapBuilder([](auto& b){b
-    .Bool("enforce_user_token_requirement", [](auto& b){
-      b.Optional();
+  return TMapBuilder([](auto& securityConfig){
+    securityConfig
+    .Bool("enforce_user_token_requirement", [](auto& enforceUserTokenRequirements){
+      enforceUserTokenRequirements.Optional();
     })
     .Optional();
   });
 }
+
+TMapBuilder ActorSystemConfigBuilder() {
+  return TMapBuilder([](auto& actorSystem){
+    actorSystem
+    .Bool("use_auto_config", [](auto& useAutoConfig){
+      useAutoConfig.Optional();
+    })
+    .Enum("node_type", [](auto& nodeType){
+      nodeType
+      .SetItems({"STORAGE", "COMPUTE", "HYBRID"})
+      .Optional();
+    })
+    .Int64("cpu_count", [](auto& cpuCount){
+      cpuCount
+      .Min(0)
+      .Optional();
+    })
+    .Array("executor", [](auto& executor){
+      executor
+      .Optional()
+      .MapItem([](auto& executorItem){
+        executorItem
+        .Enum("name", {"System", "User", "Batch", "IO", "IC"})
+        .Int64("spin_threshold", [](auto& spinThreshold){
+          spinThreshold
+          .Min(0)
+          .Optional();
+        })
+        .Int64("threads", nonNegative())
+        .Int64("max_threads", [](auto& maxThreads){
+          maxThreads
+          .Optional()
+          .Min(0);
+        })
+        .Int64("max_avg_ping_deviation", [](auto& maxAvgPingDeviation){
+          maxAvgPingDeviation
+          .Min(0)
+          .Optional();
+        })
+        .Int64("time_per_mailbox_micro_secs", [](auto& timePerMailboxMicroSecs){
+          timePerMailboxMicroSecs
+          .Optional()
+          .Min(0);
+        })
+        .Enum("type", {"IO", "BASIC"});
+      });
+    })
+    .Map("scheduler", [](auto& scheduler){
+      scheduler
+      .Optional()
+      .Int64("progress_threshold", nonNegative())
+      .Int64("resolution", nonNegative())
+      .Int64("spin_threshold", nonNegative());
+    })
+    .AddCheck("Must either be auto config or manual config", [](auto& actorSystemContext){
+      bool autoConfig = false;
+      auto node = actorSystemContext.Node();
+      if (node["use_auto_config"].Exists() && node["use_auto_config"].Bool()) {
+        autoConfig = true;
+      }
+      if (autoConfig) {
+        actorSystemContext.Expect(node["node_type"].Exists(), "node_type must exist when using auto congfig");
+        actorSystemContext.Expect(node["cpu_count"].Exists(), "cpu_count must exist when using auto congfig");
+
+        actorSystemContext.Expect(!node["executor"].Exists(), "executor must not exist when using auto congfig");
+        actorSystemContext.Expect(!node["scheduler"].Exists(), "scheduler must not exist when using auto congfig");
+      } else {
+        actorSystemContext.Expect(node["executor"].Exists(), "executor must exist when not using auto congfig");
+        actorSystemContext.Expect(node["scheduler"].Exists(), "scheduler must exist when not using auto congfig");
+
+        actorSystemContext.Expect(!node["node_type"].Exists(), "node_type must not exist when not using auto congfig");
+        actorSystemContext.Expect(!node["cpu_count"].Exists(), "cpu_count must not exist when not using auto congfig");
+      }
+    });
+  });
+}
+
+NYamlConfig::NValidator::TMapBuilder BlobStorageConfigBuilder() {
+  return TMapBuilder([](auto& blobStorageConfig){
+    blobStorageConfig
+    .Map("service_set", [](auto& serviceSet){
+      serviceSet
+      .Array("groups", [](auto& groups){
+        groups
+        .MapItem([](auto& group){
+          group
+          .Enum("erasure_species", {"none", "block-4-2", "mirror-3-dc", "mirror-3dc-3-nodes"})
+          .Array("rings", [](auto& rings){
+            rings
+            .MapItem([](auto& ring){
+              ring
+              .Array("fail_domains", [](auto& failDomains){
+                failDomains
+                .MapItem([](auto& failDomain){
+                  failDomain
+                  .Array("vdisk_locations", [](auto& vdiskLocations){
+                    vdiskLocations
+                    .MapItem([](auto& vdiskLocation){
+                      vdiskLocation
+                      .String("node_id")
+                      .String("path")
+                      .Enum("pdisk_category", {"ssd", "nvme", "rot"});
+                    });
+                  });
+                });
+              });
+            });
+          });
+        });
+      });
+    });
+  });
+}
+
+NYamlConfig::NValidator::TMapBuilder ChannelProfileConfigBuilder() {
+  return TMapBuilder([](auto& channelProfileConfig){
+    channelProfileConfig
+    .Array("profile", [](auto& profile){
+      profile
+      .MapItem([](auto& profileItem){
+        profileItem
+        .Array("channel", [](auto& channel){
+          channel
+          .MapItem([](auto& channelItem){
+            channelItem
+            .Enum("erasure_species", {"none", "block-4-2", "mirror-3-dc", "mirror-3dc-3-nodes"})
+            .Int64("pdisk_category")
+            .Enum("storage_pool_kind", {"nvme", "ssd", "rot"});
+          });
+        })
+        .Int64("profile_id", nonNegative());
+      });
+    });
+  });
+}
+
+NYamlConfig::NValidator::TMapBuilder StaticConfigBuilder() {
+  return TMapBuilder([](auto& staticConfig){
+    staticConfig
+    .Enum("static_erasure", [](auto& staticErasure){
+      staticErasure
+      .SetItems({"none", "block-4-2", "mirror-3-dc", "mirror-3dc-3-nodes"})
+      .Optional();
+    })
+    .Field("host_configs", HostConfigBuilder())
+    .Field("hosts", HostsBuilder())
+    .Field("domains_config", DomainsConfigBuilder())
+    .Map("table_service_config", [](auto& tableServiceConfig){
+      tableServiceConfig
+      .Optional()
+      .String("sql_version");
+    })
+    .Field("actor_system_config", ActorSystemConfigBuilder())
+    .Field("blob_storage_config", BlobStorageConfigBuilder())
+    .Field("channel_profile_config", ChannelProfileConfigBuilder());
+  });
+}
diff --git a/ydb/library/yaml_config/static_validator/builders.h b/ydb/library/yaml_config/static_validator/builders.h
index ec81eaa42e..aaa3a672d3 100644
--- a/ydb/library/yaml_config/static_validator/builders.h
+++ b/ydb/library/yaml_config/static_validator/builders.h
@@ -7,3 +7,10 @@ NYamlConfig::NValidator::TMapBuilder DomainsConfigBuilder();
 NYamlConfig::NValidator::TArrayBuilder StoragePoolTypesConfigBuilder();
 NYamlConfig::NValidator::TArrayBuilder StateStorageBuilder();
 NYamlConfig::NValidator::TMapBuilder SecurityConfigBuilder();
+
+NYamlConfig::NValidator::TMapBuilder ActorSystemConfigBuilder();
+NYamlConfig::NValidator::TMapBuilder BlobStorageConfigBuilder();
+
+NYamlConfig::NValidator::TMapBuilder ChannelProfileConfigBuilder();
+
+NYamlConfig::NValidator::TMapBuilder StaticConfigBuilder();
diff --git a/ydb/library/yaml_config/static_validator/ut/CMakeLists.darwin-x86_64.txt b/ydb/library/yaml_config/static_validator/ut/CMakeLists.darwin-x86_64.txt
index 5ba673b5a0..83e5fe99d1 100644
--- a/ydb/library/yaml_config/static_validator/ut/CMakeLists.darwin-x86_64.txt
+++ b/ydb/library/yaml_config/static_validator/ut/CMakeLists.darwin-x86_64.txt
@@ -6,6 +6,7 @@
 # original buildsystem will not be accepted.
 
 
+add_subdirectory(example_configs)
 
 add_executable(ydb-library-yaml_config-static_validator-ut)
 target_link_libraries(ydb-library-yaml_config-static_validator-ut PUBLIC
diff --git a/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-aarch64.txt b/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-aarch64.txt
index 2cc2a1d91e..f943c0a962 100644
--- a/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-aarch64.txt
+++ b/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-aarch64.txt
@@ -6,6 +6,7 @@
 # original buildsystem will not be accepted.
 
 
+add_subdirectory(example_configs)
 
 add_executable(ydb-library-yaml_config-static_validator-ut)
 target_link_libraries(ydb-library-yaml_config-static_validator-ut PUBLIC
diff --git a/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-x86_64.txt b/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-x86_64.txt
index ab86023928..8de063feaa 100644
--- a/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-x86_64.txt
+++ b/ydb/library/yaml_config/static_validator/ut/CMakeLists.linux-x86_64.txt
@@ -6,6 +6,7 @@
 # original buildsystem will not be accepted.
 
 
+add_subdirectory(example_configs)
 
 add_executable(ydb-library-yaml_config-static_validator-ut)
 target_link_libraries(ydb-library-yaml_config-static_validator-ut PUBLIC
diff --git a/ydb/library/yaml_config/static_validator/ut/CMakeLists.windows-x86_64.txt b/ydb/library/yaml_config/static_validator/ut/CMakeLists.windows-x86_64.txt
index 749e97fd3c..68abb35441 100644
--- a/ydb/library/yaml_config/static_validator/ut/CMakeLists.windows-x86_64.txt
+++ b/ydb/library/yaml_config/static_validator/ut/CMakeLists.windows-x86_64.txt
@@ -6,6 +6,7 @@
 # original buildsystem will not be accepted.
 
 
+add_subdirectory(example_configs)
 
 add_executable(ydb-library-yaml_config-static_validator-ut)
 target_link_libraries(ydb-library-yaml_config-static_validator-ut PUBLIC
diff --git a/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.darwin-x86_64.txt b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.darwin-x86_64.txt
new file mode 100644
index 0000000000..cfdca304d9
--- /dev/null
+++ b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.darwin-x86_64.txt
@@ -0,0 +1,63 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_executable(static_validator-ut-example_configs)
+target_link_libraries(static_validator-ut-example_configs PUBLIC
+  contrib-libs-cxxsupp
+  yutil
+  library-cpp-cpuid_check
+  cpp-testing-unittest_main
+  library-yaml_config-static_validator
+  library-yaml_config-validator
+)
+target_link_options(static_validator-ut-example_configs PRIVATE
+  -Wl,-platform_version,macos,11.0,11.0
+  -fPIC
+  -fPIC
+)
+target_sources(static_validator-ut-example_configs PRIVATE
+  ${CMAKE_SOURCE_DIR}/ydb/library/yaml_config/static_validator/ut/example_configs/test.cpp
+)
+set_property(
+  TARGET
+  static_validator-ut-example_configs
+  PROPERTY
+  SPLIT_FACTOR
+  1
+)
+add_yunittest(
+  NAME
+  static_validator-ut-example_configs
+  TEST_TARGET
+  static_validator-ut-example_configs
+  TEST_ARG
+  --print-before-suite
+  --print-before-test
+  --fork-tests
+  --print-times
+  --show-fails
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  LABELS
+  SMALL
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  PROCESSORS
+  1
+)
+target_allocator(static_validator-ut-example_configs
+  system_allocator
+)
+vcs_info(static_validator-ut-example_configs)
diff --git a/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-aarch64.txt b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-aarch64.txt
new file mode 100644
index 0000000000..f5e109052a
--- /dev/null
+++ b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-aarch64.txt
@@ -0,0 +1,68 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_executable(static_validator-ut-example_configs)
+target_link_libraries(static_validator-ut-example_configs PUBLIC
+  contrib-libs-linux-headers
+  contrib-libs-cxxsupp
+  yutil
+  cpp-testing-unittest_main
+  library-yaml_config-static_validator
+  library-yaml_config-validator
+)
+target_link_options(static_validator-ut-example_configs PRIVATE
+  -ldl
+  -lrt
+  -Wl,--no-as-needed
+  -fPIC
+  -fPIC
+  -lpthread
+  -lrt
+  -ldl
+)
+target_sources(static_validator-ut-example_configs PRIVATE
+  ${CMAKE_SOURCE_DIR}/ydb/library/yaml_config/static_validator/ut/example_configs/test.cpp
+)
+set_property(
+  TARGET
+  static_validator-ut-example_configs
+  PROPERTY
+  SPLIT_FACTOR
+  1
+)
+add_yunittest(
+  NAME
+  static_validator-ut-example_configs
+  TEST_TARGET
+  static_validator-ut-example_configs
+  TEST_ARG
+  --print-before-suite
+  --print-before-test
+  --fork-tests
+  --print-times
+  --show-fails
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  LABELS
+  SMALL
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  PROCESSORS
+  1
+)
+target_allocator(static_validator-ut-example_configs
+  cpp-malloc-jemalloc
+)
+vcs_info(static_validator-ut-example_configs)
diff --git a/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-x86_64.txt b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-x86_64.txt
new file mode 100644
index 0000000000..f75721a24e
--- /dev/null
+++ b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.linux-x86_64.txt
@@ -0,0 +1,70 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_executable(static_validator-ut-example_configs)
+target_link_libraries(static_validator-ut-example_configs PUBLIC
+  contrib-libs-linux-headers
+  contrib-libs-cxxsupp
+  yutil
+  library-cpp-cpuid_check
+  cpp-testing-unittest_main
+  library-yaml_config-static_validator
+  library-yaml_config-validator
+)
+target_link_options(static_validator-ut-example_configs PRIVATE
+  -ldl
+  -lrt
+  -Wl,--no-as-needed
+  -fPIC
+  -fPIC
+  -lpthread
+  -lrt
+  -ldl
+)
+target_sources(static_validator-ut-example_configs PRIVATE
+  ${CMAKE_SOURCE_DIR}/ydb/library/yaml_config/static_validator/ut/example_configs/test.cpp
+)
+set_property(
+  TARGET
+  static_validator-ut-example_configs
+  PROPERTY
+  SPLIT_FACTOR
+  1
+)
+add_yunittest(
+  NAME
+  static_validator-ut-example_configs
+  TEST_TARGET
+  static_validator-ut-example_configs
+  TEST_ARG
+  --print-before-suite
+  --print-before-test
+  --fork-tests
+  --print-times
+  --show-fails
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  LABELS
+  SMALL
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  PROCESSORS
+  1
+)
+target_allocator(static_validator-ut-example_configs
+  cpp-malloc-tcmalloc
+  libs-tcmalloc-no_percpu_cache
+)
+vcs_info(static_validator-ut-example_configs)
diff --git a/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.txt b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.txt
new file mode 100644
index 0000000000..f8b31df0c1
--- /dev/null
+++ b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.txt
@@ -0,0 +1,17 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64" AND NOT HAVE_CUDA)
+  include(CMakeLists.linux-aarch64.txt)
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
+  include(CMakeLists.darwin-x86_64.txt)
+elseif (WIN32 AND CMAKE_SYSTEM_PROCESSOR STREQUAL "AMD64" AND NOT HAVE_CUDA)
+  include(CMakeLists.windows-x86_64.txt)
+elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" AND NOT HAVE_CUDA)
+  include(CMakeLists.linux-x86_64.txt)
+endif()
diff --git a/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.windows-x86_64.txt b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.windows-x86_64.txt
new file mode 100644
index 0000000000..8521e7c92f
--- /dev/null
+++ b/ydb/library/yaml_config/static_validator/ut/example_configs/CMakeLists.windows-x86_64.txt
@@ -0,0 +1,58 @@
+
+# This file was generated by the build system used internally in the Yandex monorepo.
+# Only simple modifications are allowed (adding source-files to targets, adding simple properties
+# like target_include_directories). These modifications will be ported to original
+# ya.make files by maintainers. Any complex modifications which can't be ported back to the
+# original buildsystem will not be accepted.
+
+
+
+add_executable(static_validator-ut-example_configs)
+target_link_libraries(static_validator-ut-example_configs PUBLIC
+  contrib-libs-cxxsupp
+  yutil
+  library-cpp-cpuid_check
+  cpp-testing-unittest_main
+  library-yaml_config-static_validator
+  library-yaml_config-validator
+)
+target_sources(static_validator-ut-example_configs PRIVATE
+  ${CMAKE_SOURCE_DIR}/ydb/library/yaml_config/static_validator/ut/example_configs/test.cpp
+)
+set_property(
+  TARGET
+  static_validator-ut-example_configs
+  PROPERTY
+  SPLIT_FACTOR
+  1
+)
+add_yunittest(
+  NAME
+  static_validator-ut-example_configs
+  TEST_TARGET
+  static_validator-ut-example_configs
+  TEST_ARG
+  --print-before-suite
+  --print-before-test
+  --fork-tests
+  --print-times
+  --show-fails
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  LABELS
+  SMALL
+)
+set_yunittest_property(
+  TEST
+  static_validator-ut-example_configs
+  PROPERTY
+  PROCESSORS
+  1
+)
+target_allocator(static_validator-ut-example_configs
+  system_allocator
+)
+vcs_info(static_validator-ut-example_configs)
diff --git a/ydb/library/yaml_config/static_validator/ut/example_configs/test.cpp b/ydb/library/yaml_config/static_validator/ut/example_configs/test.cpp
new file mode 100644
index 0000000000..0cda850afb
--- /dev/null
+++ b/ydb/library/yaml_config/static_validator/ut/example_configs/test.cpp
@@ -0,0 +1,907 @@
+#include <ydb/library/yaml_config/static_validator/builders.h>
+
+#include <library/cpp/testing/unittest/registar.h>
+#include <ydb/library/yaml_config/validator/validator.h>
+#include <ydb/library/yaml_config/validator/validator_builder.h>
+#include <ydb/library/yaml_config/static_validator/builders.h>
+
+using namespace NYamlConfig::NValidator;
+using TIssue = TValidationResult::TIssue;
+
+bool HasOnlyThisIssues(TValidationResult result, TVector<TIssue> issues) {
+    if (result.Issues.size() != issues.size()) {
+        Cerr << "Issue counts are differend. List of actul issues:" << Endl;
+        Cerr << result;
+        Cerr << "------------- List of Expected Issues: " << Endl;
+        Cerr << TValidationResult(issues);
+        Cerr << "------------- End of issue List" << Endl;
+        return false;
+    }
+    Sort(result.Issues);
+    Sort(issues);
+    for (size_t i = 0; i < issues.size(); ++i) {
+        if (result.Issues[i] != issues[i]) {
+            Cerr << "Issues are differend. List of actul issues:" << Endl;
+            Cerr << result;
+            Cerr << "------------- List of Expected Issues: " << Endl;
+            Cerr << TValidationResult(issues);
+            Cerr << "------------- End of issue List" << Endl;
+            return false;
+        }
+    }
+    return true;
+}
+
+bool Valid(TValidationResult result) {
+    if (result.Ok()) return true;
+
+    Cerr << "List of issues:" << Endl;
+    Cerr << result;
+    Cerr << "------------- End of issue list: " << Endl;
+    return false;
+}
+
+Y_UNIT_TEST_SUITE(StaticConfigExamples) {
+    Y_UNIT_TEST(SingleNodeWithFile) {
+        auto v = StaticConfigBuilder().CreateValidator();
+
+        const char* yaml =
+        "static_erasure: none\n"
+        "host_configs:\n"
+        "- drive:\n"
+        "  - path: /tmp/pdisk.data\n"
+        "    type: SSD\n"
+        "  host_config_id: 1\n"
+        "hosts:\n"
+        "- host: localhost\n"
+        "  host_config_id: 1\n"
+        "  port: 19001\n"
+        "  walle_location:\n"
+        "    body: 1\n"
+        "    data_center: '1'\n"
+        "    rack: '1'\n"
+        "domains_config:\n"
+        "  domain:\n"
+        "  - name: Root\n"
+        "    storage_pool_types:\n"
+        "    - kind: ssd\n"
+        "      pool_config:\n"
+        "        box_id: 1\n"
+        "        erasure_species: none\n"
+        "        kind: ssd\n"
+        "        pdisk_filter:\n"
+        "        - property:\n"
+        "          - type: SSD\n"
+        "        vdisk_kind: Default\n"
+        "  state_storage:\n"
+        "  - ring:\n"
+        "      node:\n"
+        "      - 1\n"
+        "      nto_select: 1\n"
+        "    ssid: 1\n"
+        "table_service_config:\n"
+        "  sql_version: 1\n"
+        "actor_system_config:\n"
+        "  executor:\n"
+        "  - name: System\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: User\n"
+        "    spin_threshold: 0\n"
+        "    threads: 3\n"
+        "    type: BASIC\n"
+        "  - name: Batch\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: IO\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: IO\n"
+        "  - name: IC\n"
+        "    spin_threshold: 10\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: BASIC\n"
+        "  scheduler:\n"
+        "    progress_threshold: 10000\n"
+        "    resolution: 256\n"
+        "    spin_threshold: 0\n"
+        "blob_storage_config:\n"
+        "  service_set:\n"
+        "    groups:\n"
+        "    - erasure_species: none\n"
+        "      rings:\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: 1\n"
+        "            path: /tmp/pdisk.data\n"
+        "            pdisk_category: SSD\n"
+        "channel_profile_config:\n"
+        "  profile:\n"
+        "  - channel:\n"
+        "    - erasure_species: none\n"
+        "      pdisk_category: 0\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: none\n"
+        "      pdisk_category: 0\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: none\n"
+        "      pdisk_category: 0\n"
+        "      storage_pool_kind: ssd\n"
+        "    profile_id: 0\n";
+
+        Y_ENSURE(Valid(v.Validate(yaml)));
+    }
+
+    Y_UNIT_TEST(BLOCK42) {
+        auto v = StaticConfigBuilder().CreateValidator();
+        const char* yaml = 
+        "static_erasure: block-4-2\n"
+        "host_configs:\n"
+        "- drive:\n"
+        "    - path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "      type: SSD\n"
+        "    - path: /dev/disk/by-partlabel/ydb_disk_ssd_02\n"
+        "      type: SSD\n"
+        "  host_config_id: 1\n"
+        "hosts:\n"
+        "- host: ydb-node-zone-a-1.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 1\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"1\"\n"
+        "- host: ydb-node-zone-a-2.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 2\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"2\"\n"
+        "- host: ydb-node-zone-a-3.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 3\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"3\"\n"
+        "\n"
+        "- host: ydb-node-zone-a-4.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 4\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"4\"\n"
+        "- host: ydb-node-zone-a-5.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 5\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"5\"\n"
+        "- host: ydb-node-zone-a-6.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 6\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"6\"\n"
+        "\n"
+        "- host: ydb-node-zone-a-7.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 7\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"7\"\n"
+        "- host: ydb-node-zone-a-8.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 8\n"
+        "    data_center: \"zone-a\"\n"
+        "    rack: \"8\"\n"
+        "\n"
+        "domains_config:\n"
+        "  domain:\n"
+        "    - name: Root\n"
+        "      storage_pool_types:\n"
+        "        - kind: ssd\n"
+        "          pool_config:\n"
+        "            box_id: 1\n"
+        "            erasure_species: block-4-2\n"
+        "            kind: ssd\n"
+        "            pdisk_filter:\n"
+        "            - property:\n"
+        "                - type: SSD\n"
+        "            vdisk_kind: Default\n"
+        "  state_storage:\n"
+        "    - ring:\n"
+        "        node: [1, 2, 3, 4, 5, 6, 7, 8]\n"
+        "        nto_select: 5\n"
+        "      ssid: 1\n"
+        "table_service_config:\n"
+        "  sql_version: 1\n"
+        "actor_system_config:\n"
+        "  executor:\n"
+        "    - name: System\n"
+        "      threads: 2\n"
+        "      type: BASIC\n"
+        "    - name: User\n"
+        "      threads: 3\n"
+        "      type: BASIC\n"
+        "    - name: Batch\n"
+        "      threads: 2\n"
+        "      type: BASIC\n"
+        "    - name: IO\n"
+        "      threads: 1\n"
+        "      time_per_mailbox_micro_secs: 100\n"
+        "      type: IO\n"
+        "    - name: IC\n"
+        "      spin_threshold: 10\n"
+        "      threads: 1\n"
+        "      time_per_mailbox_micro_secs: 100\n"
+        "      type: BASIC\n"
+        "  scheduler:\n"
+        "    progress_threshold: 10000\n"
+        "    resolution: 256\n"
+        "    spin_threshold: 0\n"
+        "blob_storage_config:\n"
+        "  service_set:\n"
+        "    groups:\n"
+        "    - erasure_species: block-4-2\n"
+        "      rings:\n"
+        "        - fail_domains:\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-1.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-2.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-3.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-4.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-5.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-6.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-7.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "            - vdisk_locations:\n"
+        "                - node_id: \"ydb-node-zone-a-8.local\"\n"
+        "                  pdisk_category: SSD\n"
+        "                  path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "channel_profile_config:\n"
+        "  profile:\n"
+        "    - channel:\n"
+        "        - erasure_species: block-4-2\n"
+        "          pdisk_category: 1\n"
+        "          storage_pool_kind: ssd\n"
+        "        - erasure_species: block-4-2\n"
+        "          pdisk_category: 1\n"
+        "          storage_pool_kind: ssd\n"
+        "        - erasure_species: block-4-2\n"
+        "          pdisk_category: 1\n"
+        "          storage_pool_kind: ssd\n"
+        "      profile_id: 0\n"
+        "interconnect_config:\n"
+        "  start_tcp: true\n"
+        "  encryption_mode: OPTIONAL\n"
+        "  path_to_certificate_file: \"/opt/ydb/certs/node.crt\"\n"
+        "  path_to_private_key_file: \"/opt/ydb/certs/node.key\"\n"
+        "  path_to_ca_file: \"/opt/ydb/certs/ca.crt\"\n"
+        "grpc_config:\n"
+        "  cert: \"/opt/ydb/certs/node.crt\"\n"
+        "  key: \"/opt/ydb/certs/node.key\"\n"
+        "  ca: \"/opt/ydb/certs/ca.crt\"\n"
+        "  services_enabled:\n"
+        "    - legacy\n";
+
+        Y_ENSURE(Valid(v.Validate(yaml)));
+    }
+
+    Y_UNIT_TEST(MIRROR_3_DC_NODES) {
+        auto v = StaticConfigBuilder().CreateValidator();
+        const char* yaml = 
+        "static_erasure: mirror-3-dc\n"
+        "host_configs:\n"
+        "- drive:\n"
+        "  - path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "    type: SSD\n"
+        "  - path: /dev/disk/by-partlabel/ydb_disk_ssd_02\n"
+        "    type: SSD\n"
+        "  - path: /dev/disk/by-partlabel/ydb_disk_ssd_03\n"
+        "    type: SSD\n"
+        "  host_config_id: 1\n"
+        "hosts:\n"
+        "- host: ydb-node-zone-a.local\n"
+        "  host_config_id: 1                 # numeric host configuration template identifier\n"
+        "  walle_location:                   # this parameter describes where host is located.\n"
+        "    body: 1                         # string representing a host serial number.\n"
+        "    data_center: 'zone-a'           # string representing the datacenter / availability zone where the host is located.\n"
+        "                                    # if cluster is deployed using mirror-3-dc fault tolerance mode, all hosts must be distributed\n"
+        "                                    # across 3 datacenters.\n"
+        "    rack: '1'                       # string representing a rack identifier where the host is located.\n"
+        "                                    # if cluster is deployed using block-4-2 erasure, all hosts should be distrubited\n"
+        "                                    # accross at least 8 racks.\n"
+        "- host: ydb-node-zone-b.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 2\n"
+        "    data_center: 'zone-b'\n"
+        "    rack: '2'\n"
+        "- host: ydb-node-zone-c.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 3\n"
+        "    data_center: 'zone-c'\n"
+        "    rack: '3'\n"
+        "domains_config:\n"
+        "  # There can be only one root domain in a cluster. Domain name prefixes all scheme objects names, e.g. full name of a table table1 in database db1.\n"
+        "  # in a cluster with domains_config.domain.name parameter set to Root would be equal to /Root/db1/table1\n"
+        "  domain:\n"
+        "  - name: Root\n"
+        "    storage_pool_types:\n"
+        "    - kind: ssd\n"
+        "      pool_config:\n"
+        "        box_id: 1\n"
+        "        # fault tolerance mode name - none, block-4-2, or mirror-3-dc..\n"
+        "        # See docs for more details https://ydb.tech/en/docs/deploy/configuration/config#domains-blob\n"
+        "        erasure_species: mirror-3-dc\n"
+        "        kind: ssd\n"
+        "        geometry:\n"
+        "          realm_level_begin: 10\n"
+        "          realm_level_end: 20\n"
+        "          domain_level_begin: 10\n"
+        "          domain_level_end: 256\n"
+        "        pdisk_filter:\n"
+        "        - property:\n"
+        "          - type: SSD  # device type to match host_configs.drive.type\n"
+        "        vdisk_kind: Default\n"
+        "  state_storage:\n"
+        "  - ring:\n"
+        "      node: [1, 2, 3]\n"
+        "      nto_select: 3\n"
+        "    ssid: 1\n"
+        "table_service_config:\n"
+        "  sql_version: 1\n"
+        "actor_system_config:          # the configuration of the actor system which descibes how cores of the instance are distributed\n"
+        "  executor:                   # accross different types of workloads in the instance.\n"
+        "  - name: System              # system executor of the actor system. in this executor YDB launches system type of workloads, like system tablets\n"
+        "                              # and reads from storage.\n"
+        "    threads: 2                # the number of threads allocated to system executor.\n"
+        "    type: BASIC\n"
+        "  - name: User                # user executor of the actor system. In this executor YDB launches user workloads, like datashard activities,\n"
+        "                              # queries and rpc calls.\n"
+        "    threads: 3                # the number of threads allocated to user executor.\n"
+        "    type: BASIC\n"
+        "  - name: Batch               # user executor of the actor system. In this executor YDB launches batch operations, like scan queries, table\n"
+        "                              # compactions, background compactions.\n"
+        "    threads: 2                # the number of threads allocated to the batch executor.\n"
+        "    type: BASIC\n"
+        "  - name: IO                  # the io executor. In this executor launches sync operations and writes logs.\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: IO\n"
+        "  - name: IC                  # the interconnect executor which YDB uses for network communications accross different nodes of the cluster.\n"
+        "    spin_threshold: 10\n"
+        "    threads: 1                # the number of threads allocated to the interconnect executor.\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: BASIC\n"
+        "  scheduler:\n"
+        "    progress_threshold: 10000\n"
+        "    resolution: 256\n"
+        "    spin_threshold: 0\n"
+        "blob_storage_config:         # configuration of static blobstorage group.\n"
+        "                             # YDB uses this group to store system tablets' data, like SchemeShard\n"
+        "  service_set:\n"
+        "    groups:\n"
+        "    - erasure_species: mirror-3-dc # fault tolerance mode name for the static group\n"
+        "      rings:          # in mirror-3-dc must have exactly 3 rings or availability zones\n"
+        "      - fail_domains:  # first record: fail domains of the static group describe where each vdisk of the static group should be located.\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-a.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-a.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_02\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-a.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_03\n"
+        "      - fail_domains: # second ring: fail domains of the static group describe where each vdisk of the static group should be located.\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-b.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-b.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_02\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-b.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_03\n"
+        "      - fail_domains: # third ring: fail domains of the static group describe where each vdisk of the static group should be located.\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-c.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-c.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_02\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: ydb-node-zone-c.local\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_03\n"
+        "channel_profile_config:\n"
+        "  profile:\n"
+        "  - channel:\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 0\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 0\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 0\n"
+        "      storage_pool_kind: ssd\n"
+        "    profile_id: 0\n"
+        "interconnect_config:\n"
+        "    start_tcp: true\n"
+        "    encryption_mode: OPTIONAL\n"
+        "    path_to_certificate_file: \"/opt/ydb/certs/node.crt\"\n"
+        "    path_to_private_key_file: \"/opt/ydb/certs/node.key\"\n"
+        "    path_to_ca_file: \"/opt/ydb/certs/ca.crt\"\n"
+        "grpc_config:\n"
+        "    cert: \"/opt/ydb/certs/node.crt\"\n"
+        "    key: \"/opt/ydb/certs/node.key\"\n"
+        "    ca: \"/opt/ydb/certs/ca.crt\"\n"
+        "    services_enabled:\n"
+        "    - legacy\n";
+
+        Y_ENSURE(Valid(v.Validate(yaml)));
+    }
+
+    Y_UNIT_TEST(MIRROR_3_DC_NODES_IN_MEMORY) {
+        auto v = StaticConfigBuilder().CreateValidator();
+        const char* yaml = 
+        "static_erasure: mirror-3-dc\n"
+        "host_configs:\n"
+        "- drive:\n"
+        "  - path: SectorMap:1:64\n"
+        "    type: SSD\n"
+        "  - path: SectorMap:2:64\n"
+        "    type: SSD\n"
+        "  - path: SectorMap:3:64\n"
+        "    type: SSD\n"
+        "  host_config_id: 1\n"
+        "hosts:\n"
+        "- host: localhost\n"
+        "  host_config_id: 1\n"
+        "  port: 19001\n"
+        "  walle_location:\n"
+        "    body: 1\n"
+        "    data_center: '1'\n"
+        "    rack: '1'\n"
+        "- host: localhost\n"
+        "  host_config_id: 1\n"
+        "  port: 19002\n"
+        "  walle_location:\n"
+        "    body: 2\n"
+        "    data_center: '2'\n"
+        "    rack: '2'\n"
+        "- host: localhost\n"
+        "  host_config_id: 1\n"
+        "  port: 19003\n"
+        "  walle_location:\n"
+        "    body: 3\n"
+        "    data_center: '3'\n"
+        "    rack: '3'\n"
+        "domains_config:\n"
+        "  domain:\n"
+        "  - name: Root\n"
+        "    storage_pool_types:\n"
+        "    - kind: ssd\n"
+        "      pool_config:\n"
+        "        box_id: 1\n"
+        "        erasure_species: mirror-3-dc\n"
+        "        kind: ssd\n"
+        "        geometry:\n"
+        "          realm_level_begin: 10\n"
+        "          realm_level_end: 20\n"
+        "          domain_level_begin: 10\n"
+        "          domain_level_end: 256\n"
+        "        pdisk_filter:\n"
+        "        - property:\n"
+        "          - type: SSD\n"
+        "        vdisk_kind: Default\n"
+        "  state_storage:\n"
+        "  - ring:\n"
+        "      node: [1, 2, 3]\n"
+        "      nto_select: 3\n"
+        "    ssid: 1\n"
+        "table_service_config:\n"
+        "  sql_version: 1\n"
+        "actor_system_config:\n"
+        "  executor:\n"
+        "  - name: System\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: User\n"
+        "    spin_threshold: 0\n"
+        "    threads: 3\n"
+        "    type: BASIC\n"
+        "  - name: Batch\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: IO\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: IO\n"
+        "  - name: IC\n"
+        "    spin_threshold: 10\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: BASIC\n"
+        "  scheduler:\n"
+        "    progress_threshold: 10000\n"
+        "    resolution: 256\n"
+        "    spin_threshold: 0\n"
+        "blob_storage_config:\n"
+        "  service_set:\n"
+        "    groups:\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      rings:\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19001\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:1:64\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19001\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:2:64\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19001\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:3:64\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19002\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:1:64\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19002\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:2:64\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19002\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:3:64\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19003\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:1:64\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19003\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:2:64\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"localhost:19003\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: SectorMap:3:64\n"
+        "channel_profile_config:\n"
+        "  profile:\n"
+        "  - channel:\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    profile_id: 0\n";
+        
+        Y_ENSURE(Valid(v.Validate(yaml)));
+    }
+
+    Y_UNIT_TEST(MIRROR_3_DC_9_NODES) {
+        auto v = StaticConfigBuilder().CreateValidator();
+        const char* yaml = 
+        "static_erasure: mirror-3-dc\n"
+        "host_configs:\n"
+        "- drive:\n"
+        "  - path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "    type: SSD\n"
+        "  - path: /dev/disk/by-partlabel/ydb_disk_ssd_02\n"
+        "    type: SSD\n"
+        "  host_config_id: 1\n"
+        "hosts:\n"
+        "- host: ydb-node-zone-a-1.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 1\n"
+        "    data_center: 'zone-a'\n"
+        "    rack: '1'\n"
+        "- host: ydb-node-zone-a-2.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 2\n"
+        "    data_center: 'zone-a'\n"
+        "    rack: '2'\n"
+        "- host: ydb-node-zone-a-3.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 3\n"
+        "    data_center: 'zone-a'\n"
+        "    rack: '3'\n"
+        "\n"
+        "- host: ydb-node-zone-b-1.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 4\n"
+        "    data_center: 'zone-b'\n"
+        "    rack: '4'\n"
+        "- host: ydb-node-zone-b-2.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 5\n"
+        "    data_center: 'zone-b'\n"
+        "    rack: '5'\n"
+        "- host: ydb-node-zone-b-3.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 6\n"
+        "    data_center: 'zone-b'\n"
+        "    rack: '6'\n"
+        "\n"
+        "- host: ydb-node-zone-c-1.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 7\n"
+        "    data_center: 'zone-c'\n"
+        "    rack: '7'\n"
+        "- host: ydb-node-zone-c-2.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 8\n"
+        "    data_center: 'zone-c'\n"
+        "    rack: '8'\n"
+        "- host: ydb-node-zone-c-3.local\n"
+        "  host_config_id: 1\n"
+        "  walle_location:\n"
+        "    body: 9\n"
+        "    data_center: 'zone-c'\n"
+        "    rack: '9'\n"
+        "\n"
+        "domains_config:\n"
+        "  domain:\n"
+        "  - name: Root\n"
+        "    storage_pool_types:\n"
+        "    - kind: ssd\n"
+        "      pool_config:\n"
+        "        box_id: 1\n"
+        "        erasure_species: mirror-3-dc\n"
+        "        kind: ssd\n"
+        "        pdisk_filter:\n"
+        "        - property:\n"
+        "          - type: SSD\n"
+        "        vdisk_kind: Default\n"
+        "  state_storage:\n"
+        "  - ring:\n"
+        "      node: [1, 2, 3, 4, 5, 6, 7, 8, 9]\n"
+        "      nto_select: 9\n"
+        "    ssid: 1\n"
+        "table_service_config:\n"
+        "  sql_version: 1\n"
+        "actor_system_config:\n"
+        "  executor:\n"
+        "  - name: System\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: User\n"
+        "    spin_threshold: 0\n"
+        "    threads: 3\n"
+        "    type: BASIC\n"
+        "  - name: Batch\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: IO\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: IO\n"
+        "  - name: IC\n"
+        "    spin_threshold: 10\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: BASIC\n"
+        "  scheduler:\n"
+        "    progress_threshold: 10000\n"
+        "    resolution: 256\n"
+        "    spin_threshold: 0\n"
+        "blob_storage_config:\n"
+        "  service_set:\n"
+        "    groups:\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      rings:\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-a-1.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-a-2.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-a-3.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-b-1.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-b-2.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-b-3.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-c-1.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-c-2.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: \"ydb-node-zone-c-3.local\"\n"
+        "            pdisk_category: SSD\n"
+        "            path: /dev/disk/by-partlabel/ydb_disk_ssd_01\n"
+        "channel_profile_config:\n"
+        "  profile:\n"
+        "  - channel:\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: mirror-3-dc\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    profile_id: 0\n"
+        "interconnect_config:\n"
+        "    start_tcp: true\n"
+        "    encryption_mode: OPTIONAL\n"
+        "    path_to_certificate_file: \"/opt/ydb/certs/node.crt\"\n"
+        "    path_to_private_key_file: \"/opt/ydb/certs/node.key\"\n"
+        "    path_to_ca_file: \"/opt/ydb/certs/ca.crt\"\n"
+        "grpc_config:\n"
+        "    cert: \"/opt/ydb/certs/node.crt\"\n"
+        "    key: \"/opt/ydb/certs/node.key\"\n"
+        "    ca: \"/opt/ydb/certs/ca.crt\"\n"
+        "    services_enabled:\n"
+        "    - legacy\n";
+        
+        Y_ENSURE(Valid(v.Validate(yaml)));
+    }
+
+    Y_UNIT_TEST(SINGLE_NODE_IN_MEMORY) {
+        auto v = StaticConfigBuilder().CreateValidator();
+        const char* yaml = 
+        "static_erasure: none\n"
+        "host_configs:\n"
+        "- drive:\n"
+        "  - path: SectorMap:1:64\n"
+        "    type: SSD\n"
+        "  host_config_id: 1\n"
+        "hosts:\n"
+        "- host: localhost\n"
+        "  host_config_id: 1\n"
+        "  port: 19001\n"
+        "  walle_location:\n"
+        "    body: 1\n"
+        "    data_center: '1'\n"
+        "    rack: '1'\n"
+        "domains_config:\n"
+        "  domain:\n"
+        "  - name: Root\n"
+        "    storage_pool_types:\n"
+        "    - kind: ssd\n"
+        "      pool_config:\n"
+        "        box_id: 1\n"
+        "        erasure_species: none\n"
+        "        kind: ssd\n"
+        "        pdisk_filter:\n"
+        "        - property:\n"
+        "          - type: SSD\n"
+        "        vdisk_kind: Default\n"
+        "  state_storage:\n"
+        "  - ring:\n"
+        "      node:\n"
+        "      - 1\n"
+        "      nto_select: 1\n"
+        "    ssid: 1\n"
+        "table_service_config:\n"
+        "  sql_version: 1\n"
+        "actor_system_config:\n"
+        "  executor:\n"
+        "  - name: System\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: User\n"
+        "    spin_threshold: 0\n"
+        "    threads: 3\n"
+        "    type: BASIC\n"
+        "  - name: Batch\n"
+        "    spin_threshold: 0\n"
+        "    threads: 2\n"
+        "    type: BASIC\n"
+        "  - name: IO\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: IO\n"
+        "  - name: IC\n"
+        "    spin_threshold: 10\n"
+        "    threads: 1\n"
+        "    time_per_mailbox_micro_secs: 100\n"
+        "    type: BASIC\n"
+        "  scheduler:\n"
+        "    progress_threshold: 10000\n"
+        "    resolution: 256\n"
+        "    spin_threshold: 0\n"
+        "blob_storage_config:\n"
+        "  service_set:\n"
+        "    groups:\n"
+        "    - erasure_species: none\n"
+        "      rings:\n"
+        "      - fail_domains:\n"
+        "        - vdisk_locations:\n"
+        "          - node_id: 1\n"
+        "            path: SectorMap:1:64\n"
+        "            pdisk_category: SSD\n"
+        "channel_profile_config:\n"
+        "  profile:\n"
+        "  - channel:\n"
+        "    - erasure_species: none\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: none\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    - erasure_species: none\n"
+        "      pdisk_category: 1\n"
+        "      storage_pool_kind: ssd\n"
+        "    profile_id: 0\n";
+        
+        Y_ENSURE(Valid(v.Validate(yaml)));
+    }
+
+}
diff --git a/ydb/library/yaml_config/static_validator/ut/example_configs/ya.make b/ydb/library/yaml_config/static_validator/ut/example_configs/ya.make
new file mode 100644
index 0000000000..edb78a7fdd
--- /dev/null
+++ b/ydb/library/yaml_config/static_validator/ut/example_configs/ya.make
@@ -0,0 +1,12 @@
+UNITTEST()
+
+SRCS(
+    test.cpp
+)
+
+PEERDIR(
+    ydb/library/yaml_config/static_validator
+    ydb/library/yaml_config/validator
+)
+
+END()
diff --git a/ydb/library/yaml_config/static_validator/ut/test.cpp b/ydb/library/yaml_config/static_validator/ut/test.cpp
index 555634e1e9..f635c4d770 100644
--- a/ydb/library/yaml_config/static_validator/ut/test.cpp
+++ b/ydb/library/yaml_config/static_validator/ut/test.cpp
@@ -186,7 +186,7 @@ Y_UNIT_TEST_SUITE(StaticValidator) {
         "    rack: '1'\n";
         
         Y_ENSURE(HasOnlyThisIssues(v.Validate(yaml), {
-            {"/hosts", "Check \"Must not have to hosts with same host name and port\" failed: items with indexes 0 and 1 are conflicting"}
+            {"/hosts", "Check \"Must not have two hosts with same host name and port\" failed: items with indexes 0 and 1 are conflicting"}
         }));
 
         yaml =
@@ -210,7 +210,7 @@ Y_UNIT_TEST_SUITE(StaticValidator) {
 
         Y_ENSURE(HasOnlyThisIssues(v.Validate(yaml), {
             {"/hosts", "Check \"All array items, that located in \"node_id\" must be unique\" failed: items with indexes 0 and 1 are conflicting"},
-            {"/hosts", "Check \"Must not have to hosts with same host name and port\" failed: items with indexes 0 and 1 are conflicting"}
+            {"/hosts", "Check \"Must not have two hosts with same host name and port\" failed: items with indexes 0 and 1 are conflicting"}
         }));
 
         yaml =
@@ -259,8 +259,8 @@ Y_UNIT_TEST_SUITE(StaticValidator) {
         "        vdisk_kind: Default\n"
         "  state_storage:\n"
         "  - ring:\n"
-        "      node: [1, 2, 3, 4, 5, 6, 7, 8]\n"
-        "      nto_select: 8\n"
+        "      node: [1, 2, 3, 4, 5, 6, 7, 8, 9]\n"
+        "      nto_select: 9\n"
         "    ssid: 1\n"
         "  security_config:\n"
         "    enforce_user_token_requirement: true\n";
@@ -283,8 +283,8 @@ Y_UNIT_TEST_SUITE(StaticValidator) {
         "        vdisk_kind: Default\n"
         "  state_storage:\n"
         "  - ring:\n"
-        "      node: [1, 2, 3, 4, 5, 6, 7, 8]\n"
-        "      nto_select: 8\n"
+        "      node: [1, 2, 3, 4, 5, 6, 7, 8, 9]\n"
+        "      nto_select: 9\n"
         "    ssid: 1\n";
         
         Y_ENSURE(HasOnlyThisIssues(v.Validate(yaml), {
diff --git a/ydb/library/yaml_config/static_validator/ut/ya.make b/ydb/library/yaml_config/static_validator/ut/ya.make
index edb78a7fdd..025a58f980 100644
--- a/ydb/library/yaml_config/static_validator/ut/ya.make
+++ b/ydb/library/yaml_config/static_validator/ut/ya.make
@@ -10,3 +10,5 @@ PEERDIR(
 )
 
 END()
+
+RECURSE_FOR_TESTS(example_configs)
diff --git a/ydb/library/yaml_config/validator/configurators.cpp b/ydb/library/yaml_config/validator/configurators.cpp
index cd9529f928..adfaecfdb0 100644
--- a/ydb/library/yaml_config/validator/configurators.cpp
+++ b/ydb/library/yaml_config/validator/configurators.cpp
@@ -28,6 +28,9 @@ std::function<void(TArrayBuilder&)> uniqueByPath(TString path, TString checkName
             for (int i = 0; i < array.Length(); ++i) {
                 TNodeWrapper node = array[i];
                 node = walkFrom(node, pathTokens);
+                if (!node.Exists()) {
+                    continue;
+                }
                 if (!node.IsScalar()) {
                     ythrow yexception() << "Can't check uniqness of non-scalar fields";
                 }
@@ -62,16 +65,20 @@ TNodeWrapper walkFrom(TNodeWrapper node, TString path) {
 
 TNodeWrapper walkFrom(TNodeWrapper node, const TVector<TString>& pathTokens) {
     for (const TString& pathToken : pathTokens) {
-        if (node.IsMap()) {
-            node = node.Map()[pathToken];
-        } else if (node.IsArray()) {
-            auto i = TryFromString<size_t>(pathToken);
-            if (!i.Defined()) {
-                ythrow yexception() << "incorrect array index";
+        if (node.Exists()) {
+            if (node.IsMap()) {
+                node = node.Map()[pathToken];
+            } else if (node.IsArray()) {
+                auto i = TryFromString<size_t>(pathToken);
+                if (!i.Defined()) {
+                    ythrow yexception() << "incorrect array index";
+                }
+                node = node.Array()[i.GetRef()];
+            } else {
+                ythrow yexception() << "incorrect path";
             }
-            node = node.Array()[i.GetRef()];
         } else {
-            ythrow yexception() << "incorrect path";
+            node = node.Map()[pathToken];
         }
     }
     return node;
diff --git a/ydb/library/yaml_config/validator/validator_builder.cpp b/ydb/library/yaml_config/validator/validator_builder.cpp
index 8826950204..86b54c4bea 100644
--- a/ydb/library/yaml_config/validator/validator_builder.cpp
+++ b/ydb/library/yaml_config/validator/validator_builder.cpp
@@ -513,13 +513,23 @@ TBoolValidator TBoolBuilder::CreateValidator() {
 
 // TEnumBuilder
 TEnumBuilder::TEnumBuilder(THashSet<TString> items)
-    : TBase(ENodeType::Enum), Items_(std::move(items)) {}
+    : TBase(ENodeType::Enum) {
+        for (TString item : items) {
+            item.to_lower();
+            Items_.insert(item);
+        }
+    }
 
 TEnumBuilder::TEnumBuilder(const TEnumBuilder& builder)
     : TBase(builder), Items_(builder.Items_) {}
 
 TEnumBuilder::TEnumBuilder(TEnumBuilder&& builder)
-    : TBase(std::move(builder)), Items_(std::move(builder.Items_)) {}
+    : TBase(std::move(builder)), Items_(std::move(builder.Items_)) {
+        for (TString item : builder.Items_) {
+            item.to_lower();
+            Items_.insert(item);
+        }
+    }
 
 TEnumBuilder& TEnumBuilder::operator=(const TEnumBuilder& builder) {
     TBuilder::operator=(builder);
@@ -538,6 +548,15 @@ TEnumBuilder::TEnumBuilder(std::function<void(TEnumBuilder&)> configurator)
     configurator(*this);
 }
 
+TEnumBuilder& TEnumBuilder::SetItems(THashSet<TString> items) {
+    Items_.clear();
+    for (TString item : items) {
+        item.to_lower();
+        Items_.insert(item);
+    }
+    return *this;
+}
+
 TEnumValidator TEnumBuilder::CreateValidator() {
     auto result = TEnumValidator();
     result.Checkers_ = Checkers_;
diff --git a/ydb/library/yaml_config/validator/validator_builder.h b/ydb/library/yaml_config/validator/validator_builder.h
index 0cee26aa2a..4096ca7e85 100644
--- a/ydb/library/yaml_config/validator/validator_builder.h
+++ b/ydb/library/yaml_config/validator/validator_builder.h
@@ -261,7 +261,7 @@ public:
 
     TEnumBuilder(std::function<void(TEnumBuilder&)> configurator);
 
-    void SetItems(const THashSet<TString>& items);
+    TEnumBuilder& SetItems(THashSet<TString> items);
 
     TEnumValidator CreateValidator();