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add-note-for-sync-when-wal-expires #2422

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Dec 30, 2022
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add-note-for-sync-when-wal-expires #2422

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Update replication-between-clusters.md
abby-cyber Dec 27, 2022
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6 changes: 6 additions & 0 deletions docs-2.0/synchronization-and-migration/replication-between-clusters.md
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Expand Up @@ -76,6 +76,8 @@ drainer：机器 IP 地址为`192.168.10.104`，只启动 drainer 服务。

- 所有`nebula-graphd.conf`配置文件里设置`enable_authorize=true`。

- 在主集群的`nebula-metad.conf`和`nebula-storaged.conf`文件中，配置`--snapshot_send_files=false`。

- 主从集群填写各自集群的`meta_server_addrs`，注意不要错填其他集群的地址。

- listener 的配置文件里`meta_server_addrs`填写主集群的机器 IP，`meta_sync_listener`填写 listener 机器的 IP。
Expand Down Expand Up @@ -512,3 +514,7 @@ nebula> SHOW DRAINER SYNC STATUS;
### 如何判断数据同步进度？

用户可以执行`SHOW SYNC STATUS`查看主集群发送数据的状态，执行`SHOW DRAINER SYNC STATUS`查看从集群接收数据的状态。如果同时满足主集群中的所有数据都发送成功，并且从集群成功接收所有数据，则说明数据同步完成。

### WAL 日志文件过期了对集群数据同步有影响吗？

如果 WAL 日志文件过期了（超过了`--wal-ttl`设置的时间），数据会不同步。用户可以通过手动在 Meta 和 Storage 服务的配置文件中添加`--snapshot_send_files=false`配置以同步数据。更新文件中的配置后，需要重启服务。关于配置文件的详细信息，参见[配置文件简介](../5.configurations-and-logs/1.configurations/1.configurations.md)。