详解centos7中配置keepalived日志为别的路径

 更新时间:2018年10月19日 08:35:30   转载 作者:OracleBlog  
这篇文章主要介绍了centos7中配置keepalived日志为别的路径,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧

keepalived 安装:

cd <keepalived_sourcecode_path>
./configure --prefix=/usr/local/keepalived
 
make && make install
 
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,

1. 通过systemctl start keepalived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 -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

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脚本之家。

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