Keepalived安装和配置
docker>Evan2017年7月29日 (六) 06:29的版本
总的为
搭建keepalived+haproxy双主高可用负载均衡系统
master and backup 都要
keepalived安装
yum install openssl pcre-devel libnfnetlink libnfnetlink-devel popt popt-devel libnl libnl-devel openssl-devel wget vim -y # wget http://www.keepalived.org/software/keepalived-1.2.20.tar.gz wget -c http://www.keepalived.org/software/keepalived-1.2.12.tar.gz tar xvf keepalived-1.2.12.tar.gz && cd keepalived-1.2.12 #centos 6.7 #4 centos6.8 ./configure --sysconf=/etc --with-kernel-dir=/usr/src/kernels/2.6.32-573.el6.x86_64 ./configure --sysconf=/etc --prefix=/usr/local/keepalived #4 centos7 ./configure --sysconf=/etc # --with-kernel-dir 使用LVS时 才一定 要 p302 chapter 11 #./configure --sysconf=/etc --with-kernel-dir=/usr/src/kernels/3.10.0-514.el7.x86_64 make -j3 && make install # ./configure --prefix=/usr/local/keepalived --sysconf=/etc --with-kernel-dir=/usr/src/kernels/2.6.32-573.el6.x86_64 ln -s /usr/local/sbin/keepalived /sbin/ chkconfig --add keepalived chkconfig --level 35 keepalived on master上的keepalived 相关配置 mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.confbak vim /etc/keepalived/keepalived.conf
keepalived配置
master Keepalved
! Configuration File for keepalived
# cat /etc/keepalived/keepalived.conf
global_defs {
notification_email { #通知邮件地址 notification_email用于设置报警邮件地址
root@localhost # # 设置邮件报警，需开启本机Sendmail 服务
evan@localhost ## yum -y install mailx sendmail
}
notification_email_from warning@localhost ## 设置邮件发送地址
smtp_server 127.0.0.1 ## 设置邮件的smtp server地址
smtp_connect_timeout 30 # 设置连接smtp sever超时时间
router_id LVS_DEVEL_shuishui # 表示运行keepalived服务器标识，发邮件时显示在邮件主题中的信息
}
######################
# VRRPD配置
######################
vrrp_script chk_haproxy {
script "killall -0 haproxy" #服务探测，返回0说明服务是正常的
interval 1 #每隔1秒探测一次
weight 21 #haproxy上线，权重加2；下线，权重减2
}
#
vrrp_instance HAProxy_HA { #双主实例1 # VRRPD 配置标识 HAProxy_HA是实例名称
state MASTER #ha1（192.168.30.71）为主，ha2（192.168.30.72）为备 #指定Keepalvied角色 MASTER表示此主机为主服务器 BACKUP则是表示为备用服务器
interface eth0 # 指定 HA 监测网络的接口
nopreempt
virtual_router_id 80 # # 虚拟路由标识，标识为数字，同一个VRRP实例使用唯一的标识，即可表示在同一个vrrp_instance下 MASTER_ID = BACKUP_ID #好像不是这样的 实例1的VRID为88
garp_master_delay 1
priority 100 #主（192.168.30.71）的优先级为100，从的（192.168.30.72）优先级为99 # 定义节点优先级，数字越大表示节点的优先级越高，同一个VRRP_instance下，MASTE_PRIORITY > BACKUP_PRIORITY
advert_int 2 # 设定MASTER与BACKUP主机质检同步检查的时间间隔，单位为秒
nopreempt
authentication { # 设定节点间通信验证类型和密码，验证类型主要有PASS和AH两种
auth_type PASS # 同一个vrrp_instance，MASTER验证密码和BACKUP保持一致
auth_pass 123456
}
#
notify_master "/etc/keepalived/notify.py master"
notify_backup "/etc/keepalived/notify.py backup"
notify_fault "/etc/keepalived/notify.py fault"
track_script { #脚本追踪
chk_haproxy
}
virtual_ipaddress {
192.168.30.88/16 dev eth0 #实例1的VIP # 设置虚拟IP地址 (VIP),又叫做漂移IP地址
}
# track_interface {
# eth0
# }
#
}
backup Keepalved
! Configuration File for keepalived
# cat /etc/keepalived/keepalived.conf
global_defs {
notification_email { #通知邮件地址
root@localhost
evan@localhost
}
notification_email_from warning@localhost
smtp_server 127.0.0.1 #邮件服务器地址
smtp_connect_timeout 30
router_id LVS_DEVEL_shuishui
}
#
vrrp_script chk_haproxy {
script "killall -0 haproxy" #服务探测，返回0说明服务是正常的
interval 1 #每隔1秒探测一次
weight 21 #haproxy上线，权重加2；下线，权重减2
}
#
vrrp_instance HAProxy_HA { #双主实例1
state MASTER #ha1（192.168.30.71）为主，ha2（192.168.30.72）为备
interface eth0
#nopreempt
virtual_router_id 80 # 好像不是这样的 实例1的VRID为88
garp_master_delay 1
priority 90 #主（192.168.30.71）的优先级为100，从的（192.168.30.72）优先级为90
advert_int 2
nopreempt
authentication {
auth_type PASS
auth_pass 123456
}
#
notify_master "/etc/keepalived/notify.py master"
notify_backup "/etc/keepalived/notify.py backup"
notify_fault "/etc/keepalived/notify.py fault"
track_script { #脚本追踪
chk_haproxy
}
virtual_ipaddress {
192.168.30.88/16 dev eth0 #实例1的VIP
}
# track_interface {
# eth0
# }
#
}
问题及解决回顾
keepalived 配置完获取不到vip
参考
Keepalived安装与配置 https://my.oschina.net/luciamoore/blog/607034
