box.info.replication_anon()

box.info.replication_anon()¶

List all the anonymous replicas following the instance.

The output is similar to the one produced by box.info.replication with an exception that anonymous replicas are indexed by their uuid strings rather than server ids, since server ids have no meaning for anonymous replicas.

Notice that when you issue a plain box.info.replication_anon, the only info returned is the number of anonymous replicas following the current instance. In order to see the full stats, you have to call box.info.replication_anon(). This is done to not overload the box.info output with excess info, since there may be lots of anonymous replicas.

Example:

tarantool> box.info.replication_anon
---
- count: 2
...

tarantool> box.info.replication_anon()
---
- 3a6a2cfb-7e47-42f6-8309-7a25c37feea1:
    id: 0
    uuid: 3a6a2cfb-7e47-42f6-8309-7a25c37feea1
    lsn: 0
    downstream:
      status: follow
      idle: 0.76203499999974
      vclock: {1: 1}
  f58e4cb0-e0a8-42a1-b439-591dd36c8e5e:
    id: 0
    uuid: f58e4cb0-e0a8-42a1-b439-591dd36c8e5e
    lsn: 0
    downstream:
      status: follow
      idle: 0.0041349999992235
      vclock: {1: 1}
...

Notice that anonymous replicas hide their lsn from the others, so an anonymous replica lsn will always be reported as zero, even if an anonymous replica performs some local space operations. To find out the lsn of a specific anonymous replica, you have to issue box.info.lsn on it.