解决一次pg_wal过大的问题

[Ch-msm]

1. 查询物理复制槽

   select * from pg_replication_slots;

2. 查看文件大小

   select pg_size_pretty(pg_wal_lsn_diff(pg_current_wal_lsn(),'71/8D1AB0F8'));

3. 移除节点

   select pg_drop_replication_slot('slot2');

4. 检查节点

   checkpoint