Azure PostgreSQL突然使用所有存储

Question

昨天，我一直在添加的“用于PostgreSQL服务器的Azure数据库”数据库突然突然增加了增长率并耗尽了所有存储，并且该脚本报告错误，因为该连接变为只读。

对磁盘上的数据库大小的查询总和不超过18GB

    select pg_size_pretty(pg_database_size('database_alpha')) => '80 MB'
    select pg_size_pretty(pg_database_size('database_beta')) => '458 MB'
    select pg_size_pretty(pg_database_size('postgres')) => '8645 kB'

如果不是我的数据库，那么可能使用什么存储，如何防止将来发生？

查看日志，大约下午5点开始有很多类似于以下内容的条目：

2018-08-26 15:52:39 UTC-5b819a84.45490-WARNING:  archiving write-ahead log file "000000010000004E000000DA" failed too many times, will try again later
2018-08-26 15:52:49 UTC-5b819a84.45490-WARNING:  archiving write-ahead log file "000000010000004E000000DA" failed too many times, will try again later
2018-08-26 15:52:56 UTC-5b819a84.45490-WARNING:  archiving write-ahead log file "000000010000004E000000DA" failed too many times, will try again later
2018-08-26 15:53:00 UTC-5b819a84.45490-WARNING:  archiving write-ahead log file "000000010000004E000000DA" failed too many times, will try again later
2018-08-26 15:53:04 UTC-5b819a84.45490-WARNING:  archiving write-ahead log file "000000010000004E000000DA" failed too many times, will try again later
2018-08-26 15:53:08 UTC-5b819a84.45490-WARNING:  archiving write-ahead log file "000000010000004E000000DA" failed too many times, will try again later
2018-08-26 15:53:11 UTC-5b819a84.45490-WARNING:  archiving write-ahead log file "000000010000004E000000DA" failed too many times, will try again later

Answer 1

我猜测硬件故障阻止了它编写WAL，这正在占用空间，现在看来似乎已经恢复了：