我已经看到类似的问题被问到堆栈溢出，但它们似乎都没有正确解决我的问题。我最近将我的系统从Ubuntu 16.04升级到Ubuntu 17.10。从那时起，我一直遇到mysql的问题，我无法正常启动它，并显示以下错误：
ERROR 2002 (HY000): Can't connect to local MySQL server through socket
'/var/run/mysqld/mysqld.sock' (2)
我已经在线搜索了许多解决方案，最后的努力也尝试卸载并重新安装，但问题在几天或几次尝试后重新出现。运行＆＃34; service mysql start＆＃34;，它显示：
Job for mysql.service failed because the control process exited with
error code.
See "systemctl status mysql.service" and "journalctl -xe" for
details.
运行建议的命令后，它会显示以下日志：
systemctl status mysql.service
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor
preset: enabled)
Active: activating (start-post) (Result: exit-code) since Thu 2018-
02-22 09:06:31 IST; 4s ago
Process: 8936 ExecStart=/usr/sbin/mysqld (code=exited,
status=1/FAILURE)
Process: 8930 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre
(code=exited, status=0/SUCCESS)
Main PID: 8936 (code=exited, status=1/FAILURE); Control PID: 8937
(mysql-systemd-s)
Tasks: 2 (limit: 4915)
CGroup: /system.slice/mysql.service
└─control
├─8937 /bin/bash /usr/share/mysql/mysql-systemd-start post
└─8948 sleep 1
Feb 22 09:06:31 vamshi-Lenovo-G50-70 systemd[1]: Starting MySQL
Community Server...
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:31.948822Z 0 [Warning] Changed limits: max_open_files: 1024
(requested 5000)
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:31.948879Z 0 [Warning] Changed limits: table_open_cache: 431
(requested 2000)
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:32.126417Z 0 [Warning] TIMESTAMP with implicit DEFAULT value
is deprecated. Please use --explicit_def
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:32.128149Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.21-
0ubuntu0.17.10.1) starting as process 8936 ...
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:32.130652Z 0 [ERROR] Could not open file
'/var/log/mysql/error.log' for error logging: No such file o
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:32.130675Z 0 [ERROR] Aborting
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:32.130694Z 0 [Note] Binlog end
Feb 22 09:06:32 vamshi-Lenovo-G50-70 mysqld[8936]: 2018-02-
22T03:36:32.130750Z 0 [Note] /usr/sbin/mysqld: Shutdown complete
Feb 22 09:06:32 vamshi-Lenovo-G50-70 systemd[1]: mysql.service: Main
process exited, code=exited, status=1/FAILURE
journalctl -xe
Feb 22 09:11:21 vamshi-Lenovo-G50-70 gnome-shell[2902]:
[AppIndicatorSupport-WARN] Attempting to re-register
:1.69/org/ayatana/NotificationItem/multiload; resetting inst
Feb 22 09:11:21 vamshi-Lenovo-G50-70 gnome-shell[2902]:
[AppIndicatorSupport-WARN] Item
:1.69/org/ayatana/NotificationItem/multiload is already registered
ESCOD
每次发生这种情况时，我都会卸载mysql并重新安装（服务器而不是客户端），然后在前几次尝试时工作正常，然后又回到相同的情况。提前谢谢！
ls -al
total 32824
drwxrwxr-x 8 root syslog 4096 Feb 22 08:44 .
drwxr-xr-x 14 root root 4096 Feb 16 2017 ..
-rw-r--r-- 1 root root 1527 Feb 17 08:58 alternatives.log
-rw-r----- 1 root adm 0 Feb 22 08:44 apport.log
-rw-r----- 1 root adm 486 Feb 21 07:29 apport.log.1
-rw-r----- 1 root adm 455 Feb 20 20:54 apport.log.2.gz
-rw-r----- 1 root adm 514 Feb 19 21:42 apport.log.3.gz
-rw-r----- 1 root adm 758 Feb 19 18:15 apport.log.4.gz
-rw-r----- 1 root adm 459 Feb 17 23:07 apport.log.5.gz
-rw-r----- 1 root adm 1389 Feb 16 00:33 apport.log.6.gz
-rw-r----- 1 root adm 275 Feb 14 20:16 apport.log.7.gz
drwxr-xr-x 2 root root 4096 Feb 17 08:55 apt
-rw-r----- 1 syslog adm 86558 Feb 22 09:17 auth.log
-rw-r----- 1 syslog adm 97522 Feb 18 18:02 auth.log.1
-rw------- 1 root utmp 0 Feb 14 20:17 btmp
drwxr-x--- 2 root lp 4096 Feb 22 08:44 cups
drwxr-xr-x 2 root root 4096 Feb 5 14:51 dist-upgrade
-rw-r--r-- 1 root root 30036 Feb 17 08:58 dpkg.log
drwx--x--x 2 root gdm 4096 Feb 14 20:18 gdm3
-rw-r--r-- 1 root root 2136 Feb 22 08:39 gpu-manager.log
-rw-r----- 1 syslog adm 3745433 Feb 22 09:28 kern.log
-rw-r----- 1 syslog adm 2302923 Feb 18 18:07 kern.log.1
-rw-rw-r-- 1 root utmp 0 Feb 14 20:17 lastlog
-rw-r----- 1 syslog adm 657 Feb 22 08:40 mail.log
-rw-r----- 1 syslog adm 1971 Feb 18 15:31 mail.log.1
-rw-r----- 1 syslog adm 3706136 Feb 22 09:28 syslog
-rw-r----- 1 syslog adm 18760212 Feb 22 08:44 syslog.1
-rw-r----- 1 syslog adm 989385 Feb 21 07:07 syslog.2.gz
-rw-r----- 1 syslog adm 587416 Feb 20 09:09 syslog.3.gz
-rw-r----- 1 syslog adm 593456 Feb 19 18:21 syslog.4.gz
-rw-r----- 1 syslog adm 672682 Feb 18 18:07 syslog.5.gz
-rw-r----- 1 syslog adm 166575 Feb 17 09:09 syslog.6.gz
-rw-r----- 1 syslog adm 891827 Feb 16 00:44 syslog.7.gz
-rw-r----- 1 syslog adm 572158 Feb 22 09:28 ufw.log
-rw-r----- 1 syslog adm 234885 Feb 18 18:06 ufw.log.1
drwxr-xr-x 2 root root 4096 Feb 15 22:00 unattended-upgrades
drwxr-xr-x 2 root root 4096 Feb 22 08:40 vmware
-rw-rw-r-- 1 root utmp 20736 Feb 22 08:41 wtmp
答案 0 :(得分：0)
创建文件夹/ var / log / mysql并确保mysqld可以写入它。