cat > /data/conf/3307/my.cnf /data/conf/3308/my.cnf /data/conf/3309/my.cnf 切換到/etc/systemd/system下報錯後，將該服務reloadcp mysqld.service mysqld3307.service
cp mysqld.service mysqld3308.service
cp mysqld.service mysqld3309.service
切換到/etc/systemd/system下
cat > mysqld3307.service mysqld3308.service mysqld3309.service
warning: mysqld3307.service changed on disk. run 'systemctl daemon-reload' to reload units.
job for mysqld3307.service failed because the control process exited with error code. see "systemctl status mysqld3307.service" and "journalctl -xe" for details.
[root@localhost data]#
[root@localhost data]#
[root@localhost data]# systemctl daemon-reload啟動例項還是報錯：報錯截圖如下：[root@localhost data]#
[root@localhost data]# systemctl start mysqld3307.service`
懷疑是之前啟動的mysql影響，將my.cnf檔案移走，停止原來的mysql程序，然後啟動3307，啟動成功
[root@localhost system]# service mysqld stop啟動3308時又報錯socket檔案衝突，檢視檔案得知，之前配置的檔案全部為socket=/tmp/mysql.sockshutting down mysql.. success!
[root@localhost system]# mv /etc/my.cnf /etc/my.cnf.bak
[root@localhost system]# systemctl start mysqld3307
將每個例項的修改後為
socket=/tmp/mysql3307.sock修改後啟動成功socket=/tmp/mysql3308.sock
socket=/tmp/mysql3309.sock
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