mysql 以状态 1 终止？

Question

今天早上我注意到我的 mysql 服务器没有运行。查看日志，我发现了以下信息。虽然mysqld服务内存不足并被杀死是令人不安的，但更令人不安的是mysql无法重新启动。

关于为什么 mysql 无法重生有什么想法吗？我如何测试以确保进程被终止后它会重新生成？

谢谢。

387 Oct 10 06:37:09 ip-xxx-xxx-xxx-xxx kernel: [12218775.475042] Out of memory: Kill process 810 (mysqld) score 232 or sacrifice child
388 Oct 10 06:37:09 ip-xxx-xxx-xxx-xxx kernel: [12218775.475060] Killed process 810 (mysqld) total-vm:888108kB, anon-rss:139816kB, file-rss:0kB
389 Oct 10 06:37:09 ip-xxx-xxx-xxx-xxx kernel: [12218775.655663] init: mysql main process (810) killed by KILL signal
390 Oct 10 06:37:09 ip-xxx-xxx-xxx-xxx kernel: [12218775.655745] init: mysql main process ended, respawning
391 Oct 10 06:37:10 ip-xxx-xxx-xxx-xxx kernel: [12218776.044805] type=1400 audit(1381408630.181:13): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=27754 comm="apparmor_parser"
392 Oct 10 06:37:10 ip-xxx-xxx-xxx-xxx kernel: [12218776.676434] init: mysql main process (27763) terminated with status 1
393 Oct 10 06:37:10 ip-xxx-xxx-xxx-xxx kernel: [12218776.676489] init: mysql main process ended, respawning
394 Oct 10 06:37:11 ip-xxx-xxx-xxx-xxx kernel: [12218777.468923] init: mysql post-start process (27764) terminated with status 1
395 Oct 10 06:37:11 ip-xxx-xxx-xxx-xxx kernel: [12218777.512363] type=1400 audit(1381408631.649:14): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/mysqld" pid=27800 comm="apparmor_parser"
396 Oct 10 06:37:11 ip-xxx-xxx-xxx-xxx kernel: [12218777.681433] init: mysql main process (27804) terminated with status 1
397 Oct 10 06:37:11 ip-xxx-xxx-xxx-xxx kernel: [12218777.681491] init: mysql respawning too fast, stopped

Answer 1

我会尝试直接作为命令运行mysqld，并查看输出。它可能是例如InnoDB corruption leading to stopping immediately after spawning ，此时 upstart 可能会尝试重生，直到 apparmour 停止它。