systemd[1]: mariadb.service: Can't open PID file /data/mariadb/mysql/30-mariadb-1.pid (yet?) after start: No such file or directory

本文轉載自查看原文 2019-12-16 14:35 1123 Mariadb

　　　環境：Centos8
　　　編譯安裝Mariadb-10.4.11，安裝到make install都沒有問題，添加服務啟動腳本到/lib/systemd/system/，服務啟動腳本名為mariadb.service，下面是自己添加的Mariadb服務啟動腳本內容

 1 [Unit]
 2 Description=Mariadb Community Server
 3 After=network.target
 4 
 5 [Service]
 6 User=mariadb
 7 Group=mariadb
 8 Type=forking
 9 PermissionsStartOnly=true
10 PIDFile=/data/mariadb/30-mariadb-1.pid
11 ExecStart=/usr/local/mariadb/support-files/mysql.server start
12 ExecReload=/usr/local/mariadb/support-files/mysql.server restart
13 ExecStop=/usr/local/mariadb/support-files/mysql.server stop
14 PrivateTmp=false
15 
16 [Install]
17 WantedBy=multi-user.target

　　　使用systemctl start mariadb嘗試啟動Mariadb，結果出錯

　　　查看Mariadb錯誤日志並沒有找到有用的信息

　　　查看mariadb狀態出現下面內容

　　　“systemd[1]: mariadb.service: Can't open PID file /data/mariadb/mysql/30-mariadb-1.pid (yet?) after start: No such file or directory”根據這行內容，留意了一下該pid文件，發現在啟動mariadb時會出現，啟動出錯后消失，該/data/maridb目錄本身所屬主與所屬組都是mariadb並且權限是777，按理來說不可能是因為權限不足的原因造成的

　　　通過百度到的這篇問答https://askubuntu.com/questions/1117330/opendkim-wont-start-cant-open-pid-file，雖然並不是圍繞Mariadb的問題，但一樣顯示Can't open PID file問題，下面回復的解決方法是注釋或刪除掉在啟動腳本中PIDFile行，試了一下，問題解決mariadb成功啟動

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