修改Keepalived配置文件位置以及重定向Keepalived日志的输出路径

欢迎支持笔者新作：《深入理解Kafka:核心设计与实践原理》和《RabbitMQ实战指南》，同时欢迎关注笔者的微信公众号：朱小厮的博客。

欢迎跳转到本文的原文链接：https://honeypps.com/backend/modify-keepalived-config-location/

上一篇博文主要讲述了如何使用Keepalived实现tomcat服务器的双机热备。这篇博文是对上一篇博文的扩展，主要讲述如何修改Keepalived的默认配置文件的路径以及重定向Keepalived日志的输出路径。关于如何安装keepalived以及keepalived的安装路径问题，请参考上一篇博文。

Keepalived默认的配置文件路径在/etc/keepalived/keepalived.conf

Keepalived默认的日志文件保存在/var/log/messages

有时候由于现实的需要，比如项目的路径规划，需要将这些文件路径修改到合适的位置。

首先看一下/etc/sysconfig/keepalived文件

# Options for keepalived. See `keepalived --help' output and keepalived(8) and
# keepalived.conf(5) man pages for a list of all options. Here are the most
# common ones :
#
# --vrrp               -P    Only run with VRRP subsystem.
# --check              -C    Only run with Health-checker subsystem.
# --dont-release-vrrp  -V    Dont remove VRRP VIPs & VROUTEs on daemon stop.
# --dont-release-ipvs  -I    Dont remove IPVS topology on daemon stop.
# --dump-conf          -d    Dump the configuration data.
# --log-detail         -D    Detailed log messages.
# --log-facility       -S    0-7 Set local syslog facility (default=LOG_DAEMON)
#KEEPALIVED_OPTIONS="-D"

注意到这段文件中只有一个KEEPALIVED_OPTIONS="-D"，这个就是修改文件路径的关键。

这里补充下Keeaplived的相关知识

/usr/local/keepalived/sbin/keepalived --vrrp -P [Only run with VRRP subsystem.]
/usr/local/keepalived/sbin/keepalived --check -C [Only run with Health-checker subsystem.]
/usr/local/keepalived/sbin/keepalived --dont-release-vrrp -V [Dont remove VRRP VIPs & VROUTEs on daemon stop. ]
/usr/local/keepalived/sbin/keepalived --dont-release-ipvs -I [Dont remove IPVS topology on daemon stop. ]
/usr/local/keepalived/sbin/keepalived --dont-fork -n [Dont fork the daemon process. ]
/usr/local/keepalived/sbin/keepalived --use-file -f [Use the specified configuration file. Default is /etc/keepalived/keepalived.conf. ]
/usr/local/keepalived/sbin/keepalived --dump-conf -d [Dump the configuration data. ]
/usr/local/keepalived/sbin/keepalived --log-console -l [Log message to local console. ]
/usr/local/keepalived/sbin/keepalived --log-detail -D [Detailed log messages. ]
/usr/local/keepalived/sbin/keepalived --log-facility -S 0-7 [Set syslog facility to LOG_LOCAL[0-7]. (default=LOG_DAEMON) ]
/usr/local/keepalived/sbin/keepalived --help -h [Display this short inlined help screen. ]
/usr/local/keepalived/sbin/keepalived --version -v [Display the version number ]
/usr/local/keepalived/sbin/keepalived --pid -p [pidfile ]
/usr/local/keepalived/sbin/keepalived --checkers_pid -c [checkers pidfile ]
/usr/local/keepalived/sbin/keepalived --vrrp_pid -r [vrrp pidfile]

细心的读者可能注意到“-D” 就是输出日志的选项，而-f就是修改默认配置文件路径的选项。

在/etc/sysconfig/keepalived中的KEEPALIVED_OPTIONS修改为：

KEEPALIVED_OPTIONS="-f [配置文件路径] -D"

这里的[配置文件路径]]就是你所要修改的keepalived的配置文件的路径。

同样注意到要修改日志文件的默认路径就需要“-S”。这里将KEEPALIVED_OPTIONS再做修改，改为：

KEEPALIVED_OPTIONS="-f [配置文件路径] -D -S 0"

这里的“-S 0”表示local0.* 具体的还需要看一下/etc/rsyslog.conf文件：

# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.*                                                 /dev/console# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none                /var/log/messages# The authpriv file has restricted access.
authpriv.*                                              /var/log/secure# Log all the mail messages in one place.
mail.*                                                  -/var/log/maillog# Log cron stuff
cron.*                                                  /var/log/cron# Everybody gets emergency messages
*.emerg                                                 *# Save news errors of level crit and higher in a special file.
uucp,news.crit                                          /var/log/spooler# Save boot messages also to boot.log
local7.*                                                /var/log/boot.log

看到最后一句：

local7.*                                                /var/log/boot.log

同样我们可以在这个文件中添加

local0.* /var/log/keepalived.log

这样我们就可以修改日志路径。

欢迎跳转到本文的原文链接：https://honeypps.com/backend/modify-keepalived-config-location/

欢迎支持笔者新作：《深入理解Kafka:核心设计与实践原理》和《RabbitMQ实战指南》，同时欢迎关注笔者的微信公众号：朱小厮的博客。

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修改Keepalived配置文件位置以及重定向Keepalived日志的输出路径

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