详解centos7中配置keepalived日志为别的路径
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centos 6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 -S 0"
(2)其次修改 /etc/rsyslog.conf 文件,添加如下:
local0.* /var/log/keepalived.log
在centos 7 下,还需要修改/lib/systemd/system/keepalived.service 文件:
centos 7使用。因为centos 7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:
systemctl daemon-reload
整体的思路就是,
-
通过systemctl start keepalived去启动;
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启动keepalived的时候,会去读service的配置文件:/lib/systemd/system/keepalived.service;
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在service的配置文件时:
3.1 启动文件路径ExecStart=/sbin/keepalived $KEEPALIVED_OPTIONS,即启动方式是带环境变量文件中参数来启动;
3.2 读取环境变量参数EnvironmentFile=/etc/sysconfig/keepalived。
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$KEEPALIVED_OPTIONS参数是在/etc/sysconfig/keepalived的配置;我们配置的是KEEPALIVED_OPTIONS="-D -d -S 0";而-S是syslog的facility,0表示放在local0,在/etc/rsyslog.conf 中配置local0.* /var/log/keepalived.log
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所以,写日志就去/var/log/keepalived.log了。