状态：“MariaDB 服务器已关闭”

Question

希望可以有人帮帮我：

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我的服务器上运行着许多站点，并且我正在使用 mariadb。\n当我这样做时：

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sudo service mysql restart\n

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我得到：

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Job for mariadb.service failed because the control process exited with \nerror code. See "systemctl status mariadb.service" and "journalctl -xe" \nfor details.\n

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systemctl 状态 mariadb.service

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    mariadb.service - MariaDB database server\n\n    Loaded: loaded (/lib/systemd/system/mariadb.service; enabled; vendor preset: enabled)\n\n    Drop-In: /etc/systemd/system/mariadb.service.d\n             \xe2\x94\x94\xe2\x94\x80migrated-from-my.cnf-settings.conf\n    Active: failed (Result: exit-code) since Thu 2017-09-14 03:16:51 UTC; 1min 6s ago\n    Process: 13247 ExecStart=/usr/sbin/mysqld $MYSQLD_OPTS $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION (code=\n    Process: 13086 ExecStartPre=/bin/sh -c [ ! -e /usr/bin/galera_recovery ] && VAR= ||   VAR=`/usr/bin/gale\n    Process: 13070 ExecStartPre=/bin/sh -c systemctl unset-environment _WSREP_START_POSITION (code=exited, s\n    Process: 13033 ExecStartPre=/usr/bin/install -m 755 -o mysql -g root -d /var/run/mysqld (code=exited, st\n   Main PID: 13247 (code=exited, status=1/FAILURE)\n   Status: "MariaDB server is down"\n   CGroup: /system.slice/mariadb.service\n           \xe2\x94\x94\xe2\x94\x803803 /usr/sbin/mysqld\n

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须藤日记ctl-xe

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   Sep 14 03:35:51 ubuntu systemd[1]: Failed to start MariaDB database server.\n   -- Subject: Unit mariadb.service has failed\n   -- Defined-By: systemd\n   -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel\n   -- \n   -- Unit mariadb.service has failed.\n   -- \n   -- The result is failed.\n   Sep 14 03:35:51 ubuntu systemd[1]: mariadb.service: Unit entered failed state.\n   Sep 14 03:35:51 ubuntu sudo[13566]: pam_unix(sudo:session): session closed for user root\n   Sep 14 03:35:51 ubuntu systemd[1]: mariadb.service: Failed with result \'exit-code\'.\n   Sep 14 03:35:52 ubuntu sshd[13753]: Failed password for root from 123.183.209.136 port 38816 ssh2\n   Sep 14 03:35:52 ubuntu sshd[13753]: Received disconnect from 123.183.209.136 port 38816:11:  [preauth]\n   Sep 14 03:35:52 ubuntu sshd[13753]: Disconnected from 123.183.209.136 port 38816 [preauth]\n   Sep 14 03:35:52 ubuntu sshd[13753]: PAM 1 more authentication failure; logname= uid=0 euid=0 tty=ssh ruser\n   Sep 14 03:36:34 ubuntu sshd[13756]: Connection closed by 123.183.209.136 port 60477 [preauth]\n   Sep 14 03:36:36 ubuntu postfix/pickup[12161]: 703AA5C0C5: uid=0 from=<root>\n   Sep 14 03:36:36 ubuntu postfix/cleanup[12162]: 703AA5C0C5: message-id=<20170914033636.703AA5C0C5@ubuntu.me\n   Sep 14 03:36:36 ubuntu postfix/cleanup[12162]: warning: 703AA5C0C5: write queue file: No space left on dev\n   Sep 14 03:36:36 ubuntu postfix/pickup[12161]: warning: maildrop/5152F5C0C4: error writing 703AA5C0C5: queu\n   Sep 14 03:37:17 ubuntu sshd[13760]: Received disconnect from 123.183.209.136 port 25567:11:  [preauth]\n   Sep 14 03:37:17 ubuntu sshd[13760]: Disconnected from 123.183.209.136 port 25567 [preauth]\n   Sep 14 03:37:36 ubuntu postfix/pickup[12161]: 7764B5C0C5: uid=0 from=<root>\n   Sep 14 03:37:36 ubuntu postfix/cleanup[12162]: 7764B5C0C5: message-id=<20170914033736.7764B5C0C5@ubuntu.me\n   Sep 14 03:37:36 ubuntu postfix/cleanup[12162]: warning: 7764B5C0C5: write queue file: No space left on dev\n   Sep 14 03:37:36 ubuntu postfix/pickup[12161]: warning: maildrop/5152F5C0C4: error writing 7764B5C0C5: queu\n   Sep 14 03:37:47 ubuntu sudo[13765]:      bob : TTY=pts/0 ; PWD=/home/bob ; USER=root ; COMMAND=/bin/journa\n   Sep 14 03:37:47 ubuntu sudo[13765]: pam_unix(sudo:session): session opened for user root by bob(uid=0)\n   lines 1238-1265/1265 (END)\n

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我真的不想失去我的数据库。\n接下来我应该做什么？

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非常感谢

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这就是 df 给我的：

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   Filesystem     1K-blocks     Used Available Use% Mounted on\n   /dev/root       49362256 46854648         0 100% /\n   devtmpfs         2019828        0   2019828   0% /dev\n   tmpfs            2021768        0   2021768   0% /dev/shm\n   tmpfs            2021768    17968   2003800   1% /run\n   tmpfs               5120        0      5120   0% /run/lock\n   tmpfs            2021768        0   2021768   0% /sys/fs/cgroup\n   tmpfs             404356        0    404356   0% /run/user/1000\n   tmpfs             404356        0    404356   0% /run/user/0\n

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Answer 1

查看第一个文件系统 (/dev/root) 已 100% 满！除了 tmpfs 卷之外，没有安装其他卷。因此，mariadb 在启动时尝试将某些内容写入磁盘，但无法执行，因此它放弃并自行关闭。

您必须弄清楚哪些内容填满了您的磁盘，并尽可能地进行修剪。例如，作为猜测，我会首先查看 http 服务器日志，因为您说您在此服务器上托管了许多站点。我见过许多服务器让 httpd 数月来记录所有内容，从而填满了磁盘空间。

将来，您可能希望为该服务器配置多个磁盘卷，这样即使一个卷已满，也不会干扰其他卷。

还要考虑自动化日志轮转。

如果磁盘空间使用的罪魁祸首不是日志，而是 mariadb 数据目录，那么您可能需要立即获取额外的磁盘卷，并将 mariadb 内容移至其中，然后才能使站点重新上线。

除非您可以在服务器上的其他地方找到一些其他内容，您可以删除它们并在短时间内腾出足够的空间。