记录1次离奇“502 error”

今天中午打开博客，发现无法加载？！顺势打开AMH后台，发现也无法加载…

在一脸懵逼后，率先想到的是不是被人攻击了，所以立即排查了vps的登陆/操作记录，发现没什么异常。

接着联想到“502 bad gateway”错误一般是由PHP引发的，故使用amh的命令重载/重启了PHP服务：

amh php restart

试了几次后… 好吧，看起来也很正常，也没提示什么错误。行，那就顺势把NGINX和MySQL等都重启一下吧。

NGINX很正常，但到了MySQL，奇怪的事情发生了。restart operation一直卡着，无法成功，行，我重启vps试试。

重启vps后的MySQL再也无法打开了，提示：

ubuntu@10-7-24-3:~$ amh mysql start
ubuntu@10-7-24-3:~$ sudo amh mysql start
=============================================================
 [Linux] AMH 5.8
 http://amh.sh

[mysql start]
=============================================================
=============================================================
 [Linux] AMH 5.8
 http://amh.sh

[mysql-generic-5.5 start]
=============================================================
mysql-generic-5.5
[OK] mysql-generic-5.5 is already installed.
Starting MySQL
. * The server quit without updating PID file (/home/usrdata/mysql-generic-5.5/mysql.pid).
200820 12:52:04 [Note] Plugin 'InnoDB' is disabled.
200820 12:52:04 [Note] Plugin 'FEDERATED' is disabled.
200820 12:52:04 [Note] Event Scheduler: Loaded 0 events
200820 12:52:04 [Note] /usr/local/mysql-generic-5.5/bin/mysqld: ready for connections.
Version: '5.5.62-log'  socket: '/tmp/mysql-generic-5.5.sock'  port: 0  MySQL Community Server (GPL)
201215  2:28:02 [Warning] Disk is full writing './amh/amh_process.TMD' (Errcode: 28). Waiting for someone to free space... (Expect up to 60 secs delay for server to continue after freeing disk space)
201215  2:28:02 [Warning] Retry in 60 secs. Message reprinted in 600 secs
201215  2:30:02 [Warning] Disk is full writing './mysql-bin.000003' (Errcode: 28). Waiting for someone to free space... (Expect up to 60 secs delay for server to continue after freeing disk space)
201215  2:30:02 [Warning] Retry in 60 secs. Message reprinted in 600 secs
201215  2:38:02 [Warning] Disk is full writing './amh/amh_process.TMD' (Errcode: 28). Waiting for someone to free space... (Expect up to 60 secs delay for server to continue after freeing disk space)

好家伙，disk还真满了？