Mysql + keepalived 双主热备

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#Mysql #keepalived

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本文详细记录了Mysql与Keepalived双主热备配置过程中遇到的问题及解决方案，包括OpenSSL未正确安装、Keepalived服务启动脚本缺失、PID文件路径错误等常见问题的解决步骤。

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Mysql + keepalived 双主热备疑难杂症

问题1：

configure: error:
!!! OpenSSL is not properly installed on your system. !!!
!!! Can not include OpenSSL headers files.

解决：

sudo apt-get install libssl-dev

问题2：
/usr/local/etc/init.d/keepalived 找不到

解决：
这个文件在你的源码包里。
/usr/local/src/keepalived-1.4.1/keepalived/etc/init.d/keepalived

问题3：

Dec 06 19:55:18 izbp1acp86oa3gv2nwrfodz systemd[1]: Starting LVS and VRRP High Availability Monitor…
Dec 06 19:55:18 izbp1acp86oa3gv2nwrfodz systemd[1]: PID file /usr/local/keepalived/var/run/keepalived.pid not readable (yet?) after start.
Dec 06 19:56:48 izbp1acp86oa3gv2nwrfodz systemd[1]: keepalived.service start operation timed out. Terminating.
Dec 06 19:56:48 izbp1acp86oa3gv2nwrfodz systemd[1]: Failed to start LVS and VRRP High Availability Monitor.
Dec 06 19:56:48 izbp1acp86oa3gv2nwrfodz systemd[1]: Unit keepalived.service entered failed state.
Dec 06 19:56:48 izbp1acp86oa3gv2nwrfodz systemd[1]: keepalived.service failed.

解决：

[root@izbp1acp86oa3gv2nwrfodz run]# vi /usr/lib/systemd/system/keepalived.service #PIDFile=/var/run/keepalived.pid
[root@izbp1acp86oa3gv2nwrfodz run]# systemctl daemon-reload
[root@izbp1acp86oa3gv2nwrfodz run]# /etc/init.d/keepalived start
Starting keepalived (via systemctl): [ OK ]