默认日志存放在系统日志：/var/log/messages下

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[root@lb01 /]# tail -f  /var/log/messages
Oct  6 13:30:07 lb01 Keepalived_vrrp[3671]: Kernel is reporting: interface eth0 UP
Oct  6 13:30:07 lb01 Keepalived_vrrp[3671]: VRRP_Instance(VI_1) Transition to MASTER STATE
Oct  6 13:30:08 lb01 Keepalived_vrrp[3671]: VRRP_Instance(VI_1) Entering MASTER STATE
Oct  6 13:30:08 lb01 Keepalived_vrrp[3671]: VRRP_Instance(VI_1) setting protocol VIPs.
Oct  6 13:30:08 lb01 Keepalived_vrrp[3671]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 192.168.119.150
Oct  6 13:30:08 lb01 Keepalived_healthcheckers[3670]: Netlink reflector reports IP 192.168.119.150 added
Oct  6 13:30:13 lb01 Keepalived_vrrp[3671]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 192.168.119.150
Oct  6 13:30:48 lb01 dhclient[856]: DHCPREQUEST on eth0 to 192.168.119.254 port 67 (xid=0x32903a31)
Oct  6 13:30:48 lb01 dhclient[856]: DHCPACK from 192.168.119.254 (xid=0x32903a31)
Oct  6 13:30:50 lb01 dhclient[856]: bound to 192.168.119.128 -- renewal in 783 seconds.
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把日志单独存放

修改/etc/sysconfig/keepalived

把KEEPALIVED_OPTIONS="-D" 修改为：KEEPALIVED_OPTIONS="-D -d -S 0"

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[root@lb01 /]# vim /etc/sysconfig/keepalived 
# 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 -d -S 0"
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在/etc/rsyslog.conf 末尾添加

[root@lb01 /]# vim /etc/rsyslog.conf 
local0.*                                                /var/log/keepalived.log

重启日志记录服务

[root@lb01 /]# /etc/init.d/rsyslog restart
Shutting down system logger:                               [  OK  ]
Starting system logger:                                    [  OK  ]

重启keepalived

[root@lb01 /]# /etc/init.d/keepalived restart
Stopping keepalived:                                       [  OK  ]
Starting keepalived:                                       [  OK  ]

查看日志

复制代码 
[root@lb01 /]# tail -f /var/log/keepalived.log 
Oct  6 13:48:22 lb01 Keepalived_healthcheckers[3998]:  Using autogen SSL context
Oct  6 13:48:22 lb01 Keepalived_healthcheckers[3998]: Using LinkWatch kernel netlink reflector...
Oct  6 13:48:22 lb01 Keepalived_vrrp[3999]: VRRP sockpool: [ifindex(2), proto(112), unicast(0), fd(10,11)]
Oct  6 13:48:22 lb01 Keepalived_vrrp[3999]: VRRP_Instance(VI_1) Transition to MASTER STATE
Oct  6 13:48:22 lb01 Keepalived_vrrp[3999]: VRRP_Instance(VI_1) Received lower prio advert, forcing new election
Oct  6 13:48:23 lb01 Keepalived_vrrp[3999]: VRRP_Instance(VI_1) Entering MASTER STATE
Oct  6 13:48:23 lb01 Keepalived_vrrp[3999]: VRRP_Instance(VI_1) setting protocol VIPs.
Oct  6 13:48:23 lb01 Keepalived_healthcheckers[3998]: Netlink reflector reports IP 192.168.119.150 added
Oct  6 13:48:23 lb01 Keepalived_vrrp[3999]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 192.168.119.150
Oct  6 13:48:28 lb01 Keepalived_vrrp[3999]: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 192.168.119.150
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注意：
默认情况下,rsyslog是受selinux限制的 
所以日志只能输出到 /var/log/messages里，自定义的目录无效 
例如keepalived，haproxy的日志输出，都依赖于rsyslog 
因此我们要关闭selinux 

【关闭selinux】 
查看 
sestatus -v 

永久关闭 
修改/etc/selinux/config 文件 
将SELINUX=enforcing改为SELINUX=disabled 

重启服务器 

【设置rsyslog】 
/etc/rsyslog.conf 
增加 
local3.* /data0/search/keepalived/log/my.log 
重启                                                                                            
service rsyslog stop 
service rsyslog start 
测试日志输出 
logger -p local3.info ‘test log print by piaohailin‘ 

参考文章 
selinux关闭教程 
http://bguncle.blog.51cto.com/3184079/957315 

查看SELinux状态：

4、/usr/sbin/sestatus -v      ##如果SELinux status参数为enabled即为开启状态

SELinux status:                 enabled

5、getenforce                 ##也可以用这个命令检查

关闭SELinux：

6、临时关闭（不用重启机器）：

setenforce 0                  ##设置SELinux 成为permissive模式

                              ##setenforce 1 设置SELinux 成为enforcing模式

7、修改配置文件需要重启机器：

修改/etc/selinux/config 文件

将SELINUX=enforcing改为SELINUX=disabled

重启机器即可


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