详解centos7中配置keepalived日志为别的路径
keepalived安装：
cd./configure--prefix=/usr/local/keepalived make&&makeinstall mkdir/etc/keepalived mkdir/etc/keepalived/scripts cp/usr/local/keepalived/etc/keepalived/keepalived.conf/etc/keepalived/ cp/root/keepalived-2.0.6/keepalived/etc/init.d/keepalived/etc/init.d/ cp/usr/local/keepalived/sbin/keepalived/sbin/keepalived cp/usr/local/keepalived/etc/sysconfig/keepalived/etc/sysconfig/ chmod+x/etc/init.d/keepalived
由于在默认状态下keepalived的日志会写入到/var/log/message中，我们需要将此剥离出来。
在centos6下可以：
（1）首先修改/etc/sysconfig/keepalived文件，注释掉如下，添加如下：
#KEEPALIVED_OPTIONS="-D" KEEPALIVED_OPTIONS="-D-d-S0"
（2）其次修改/etc/rsyslog.conf文件，添加如下：
local0.*/var/log/keepalived.log
在centos7下，还需要修改/lib/systemd/system/keepalived.service文件：
centos7使用。因为centos7使用systemctl，通过systemctl调用service，所以需要修改/lib/systemd/system/keepalived.service文件。
将里面的：
EnvironmentFile=-/usr/local/keepalived/etc/sysconfig/keepalived ExecStart=/usr/local/keepalived/sbin/keepalived$KEEPALIVED_OPTIONS
修改成：
EnvironmentFile=/etc/sysconfig/keepalived ExecStart=/sbin/keepalived$KEEPALIVED_OPTIONS
然后重新加载service：
systemctldaemon-reload
整体的思路就是，
1.通过systemctlstartkeepalived去启动；
2.启动keepalived的时候，会去读service的配置文件：/lib/systemd/system/keepalived.service；
3.在service的配置文件时：
3.1启动文件路径ExecStart=/sbin/keepalived$KEEPALIVED_OPTIONS，即启动方式是带环境变量文件中参数来启动；
3.2读取环境变量参数EnvironmentFile=/etc/sysconfig/keepalived。
4.$KEEPALIVED_OPTIONS参数是在/etc/sysconfig/keepalived的配置；我们配置的是KEEPALIVED_OPTIONS="-D-d-S0"；而-S是syslog的facility，0表示放在local0，在/etc/rsyslog.conf中配置local0.*/var/log/keepalived.log
5.所以，写日志就去/var/log/keepalived.log了。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。
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