Cluster, replicaset, and instance names

changelogs/unreleased/anon-on-failure-ballot.md

@@ -0,0 +1,4 @@
+## bugfix/replication
+
+* Fixed a bug when new instances could try to register via an anon instance
+  which previously failed to apply `box.cfg{replication_anon = false}`.

changelogs/unreleased/global-names.md

@@ -0,0 +1,19 @@
+## feature/replication
+
+* A new option `box.cfg.cluster_name` allows assigning a human-readable name to
+  the entire cluster. It has to match in all instances and is displayed in
+  `box.info.cluster.name` (gh-5029).
+
+* A new option `box.cfg.replicaset_name` allows assigning a human-readable name
+  to the replicaset. It works the same as `box.cfg.replicaset_uuid`. Its value
+  must be the same across all instances of one replicaset. The replicaset name
+  is displayed in `box.info.replicaset.name` (gh-5029).
+
+* A new option `box.cfg.instance_name` allows assigning a human-readable name to
+  the instance. It works the same as `box.cfg.instance_uuid`. Its value must be
+  unique in the replicaset. The instance name is displayed in `box.info.name`.
+  Names of other replicas in the same replicaset are visible in
+  `box.info.replication[id].name` (gh-5029).
+
+* Instance at rebootstrap can change its UUID while keeping its numeric ID if it
+  has the same non-empty instance name (gh-5029).

changelogs/unreleased/info-cluster-rename.md

@@ -0,0 +1,6 @@
+## bugfix/core
+
+* **[Breaking change]** The table `box.info.cluster` is renamed to
+  `box.info.replicaset`. The behaviour can be reverted using the `compat` option
+  `box_info_cluster_meaning`
+  (https://tarantool.io/compat/box_info_cluster_meaning) (gh-5029).

changelogs/unreleased/replicaset-uuid-update-ban.md

@@ -0,0 +1,3 @@
+## bugfix/replication
+
+* Fixed a bug that allowed to change replicaset UUID via `_schema` space.

changelogs/unreleased/schema-new-replicaset-uuid-key.md

@@ -0,0 +1,6 @@
+## bugfix/core
+
+* **[Breaking change]** The key `box.space._schema['cluster']` is renamed to
+  `'replicaset_uuid'`. That is not expected to be breaking because `_schema` is
+  an internal system space, but the key was visible in public and documented
+  (gh-5029).

src/box/CMakeLists.txt

@@ -95,8 +95,10 @@ include_directories(${EXTRA_BOX_INCLUDE_DIRS})
 add_library(box_error STATIC error.cc errcode.c mp_error.cc)
 target_link_libraries(box_error core stat mpstream vclock)
 
+add_library(node_name STATIC node_name.c)
+
 add_library(xrow STATIC xrow.c iproto_constants.c iproto_features.c)
-target_link_libraries(xrow server core small vclock misc box_error
+target_link_libraries(xrow server core small vclock misc box_error node_name
                       ${MSGPUCK_LIBRARIES})
 
 set(tuple_sources
@@ -324,6 +326,6 @@ add_custom_command(OUTPUT ${SQL_BIN_DIR}/opcodes.c
         ${SQL_BIN_DIR}/opcodes.h)
 
 target_link_libraries(box box_error tuple stat xrow xlog vclock crc32 raft
-                      ${common_libraries})
+                      node_name ${common_libraries})
 
 add_dependencies(box build_bundled_libs generate_sql_files)