keepalived 容器在宿主機重啟后無法啟動問題：報錯：daemon is already running

初步猜測原因是：keepalived容器內的keepalived.pid文件在keepalived容器非正常退出時，沒有正確刪除，造成第二次啟動時容器檢查到pid文件已經存在，認為該進程已經存在，因為keepalived容器的啟動檢查機制只允許同一台主機上啟動一個進程，所以無法啟動，並報錯：daemon is already running
注：該問題是keepalived軟件本身存在的一個bug，如果需要優化，可以考慮在keepalived容器內增加腳本，在keepalived容器啟動前進行一次清理動作，主動清理掉原來的keepalived.pid文件，待驗證

 

 

 

已驗證：上面猜測的原因是正確的

可以重新構建keepalived鏡像，在啟動keepalived之前刪除一遍keepalived.pid文件即可

 

新的dockerFile文件

FROM keepalived:1.3.5.0
MAINTAINER wulj

COPY keepalived.sh /etc/init.d/
RUN chmod +x /etc/init.d/keepalived.sh
ENTRYPOINT ["/etc/init.d/keepalived.sh"]

keepalived.sh文件

#!/bin/bash
#decription:start keepalived
echo `ps -ef` > /winhong_test.txt
rm -rf /var/run/keepalived.pid
/usr/sbin/keepalived --dont-fork --log-console --log-detail