上一篇博文主要講述瞭如何使用Keepalived實現tomcat伺服器的雙機熱備。這篇博文是對上一篇博文的擴充套件，主要講述如何修改Keepalived的預設配置檔案的路徑以及重定向Keepalived日誌的輸出路徑。關於如何安裝keepalived以及keepalived的安裝路徑問題，請參考上一篇博文。

Keepalived預設的配置檔案路徑在/etc/keepalived/keepalived.conf

Keepalived預設的日誌檔案儲存在/var/log/messages

有時候由於現實的需要，比如專案的路徑規劃，需要將這些檔案路徑修改到合適的位置。

首先看一下/etc/sysconfig/keepalived檔案

# 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"
 

這裡補充下Keeaplived的相關知識

/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]
 

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

KEEPALIVED_OPTIONS="-f [配置檔案路徑] -D" 

這裡的[配置檔案路徑]]就是你所要修改的keepalived的配置檔案的路徑。

同樣注意到要修改日誌檔案的預設路徑就需要“-S”。這裡將KEEPALIVED_OPTIONS再做修改，改為：

KEEPALIVED_OPTIONS="-f [配置檔案路徑] -D -S 0" 

# 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

local7.*                                                /var/log/boot.log

local0.*                                                                                               /var/log/keepalived.log

這樣我們就可以修改日誌路徑。