#http高可用+负载均衡pacemaker+haproxy
#http+corosync+pacemaker+pcs+haproxy
#ssh免密验证,必须设置http://www.cnblogs.com/elvi/p/7736521.html
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#所有控制节点
#安装Pacemake Corosync
yum install corosync pacemaker pcs fence-agents resource-agents -y
yum install haproxy httpd -y
#启动pcsd
systemctl enable pcsd.service
systemctl start pcsd.service
#修改群集用户hacluster密码
echo centos | passwd --stdin hacluster
#http设置
cp /etc/httpd/conf/httpd.conf{,.bak}
sed -i 's#^Listen 80#Listen 8080#' /etc/httpd/conf/httpd.conf
echo "ServerName `hostname`:8080">>/etc/httpd/conf/httpd.conf
tail -1 /etc/httpd/conf/httpd.conf
systemctl start httpd.service
netstat -antp|grep httpd
echo `hostname`>/var/www/html/index.html #测试主页
########################
#其中一节点执行 controller1
#创建、启动my_cluster集群
pcs cluster auth -u hacluster -p centos controller1 controller2 controller3
pcs cluster setup --start --name my_cluster controller1 controller2 controller3
pcs cluster enable --all #集群自启动
#pcs cluster start --all # 启动集群
pcs cluster status #集群状态
#检验
corosync-cfgtool -s #验证corosync
corosync-cmapctl| grep members #查看成员
pcs status corosync #查看corosync状态
crm_verify -L -V #检查配置
pcs property set stonith-enabled=false #禁用STONITH
pcs property set no-quorum-policy=ignore #无仲裁时，选择忽略
#创建 VIP 资源
pcs resource create vip ocf:heartbeat:IPaddr2 ip=10.2.1.10 cidr_netmask=24 op monitor interval=28s
# pcs resource rsc defaults resource-stickiness=100
# ### 可选参考
# pcs resource create haproxy systemd:haproxy op monitor interval=5s
# pcs constraint colocation add vip haproxy INFINITY #HAProxy和VIP必须在同一节点
# pcs constraint order vip then haproxy #先启动VIP,再启动HAProxy
#添加到群集
#pcs resource create WEB apache configfile="/etc/httpd/conf/httpd.conf" statusurl="http://127.0.0.1/server-status"
# #创建group作为一个整体
# pcs resource group add MyGroup vip
# pcs resource group add MyGroup WEB
############haproxy配置,所有节点执行
#允许没VIP时启动
echo "net.ipv4.ip_nonlocal_bind = 1" >>/etc/sysctl.conf
sysctl -p
#haproxy日志
echo '
$ModLoad imudp
$UDPServerRun 514
$template Haproxy,"%rawmsg% \n"
local0.=info -/var/log/haproxy.log;Haproxy
local0.notice -/var/log/haproxy-status.log;Haproxy
'>/etc/rsyslog.d/haproxy.conf
systemctl status rsyslog.service
systemctl restart rsyslog.service
cp /etc/haproxy/haproxy.cfg{,.bak}
#默认配置
echo '
###########全局配置#########
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
daemon
nbproc 1 #进程数量
maxconn 4096 #最大连接数
user haproxy #运行用户
group haproxy #运行组
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
########默认配置############
defaults
log global
mode http #默认模式{ tcp|http|health }
option httplog #日志类别,采用httplog
option dontlognull #不记录健康检查日志信息
retries 2 #2次连接失败不可用
option forwardfor #后端服务获得真实ip
option httpclose #请求完毕后主动关闭http通道
option abortonclose #服务器负载很高，自动结束比较久的链接
maxconn 4096 #最大连接数
timeout connect 5m #连接超时
timeout client 1m #客户端超时
timeout server 31m #服务器超时
timeout check 10s #心跳检测超时
balance roundrobin #负载均衡方式，轮询
########统计页面配置########
listen stats
bind 0.0.0.0:1080
mode http
option httplog
log 127.0.0.1 local0 err
maxconn 10 #最大连接数
stats refresh 30s
stats uri /admin #状态页面 http//ip:1080/admin访问
stats realm Haproxy\ Statistics
stats auth admin:admin #用户和密码:admin
stats hide-version #隐藏版本信息
stats admin if TRUE #设置手工启动/禁用
'>/etc/haproxy/haproxy.cfg
#haproxy web代理配置
echo '
########WEB############
listen dashboard_cluster
bind controller:80
balance roundrobin
option tcpka
option httpchk
option tcplog
server controller1 controller1:8080 check port 8080 inter 2000 rise 2 fall 5
server controller2 controller2:8080 check port 8080 inter 2000 rise 2 fall 5
server controller3 controller3:8080 check port 8080 inter 2000 rise 2 fall 5
'>>/etc/haproxy/haproxy.cfg
#重启haproxy
systemctl restart haproxy.service
systemctl status haproxy.service
#systemctl disable haproxy.service
#登录状态页面 http//ip:1080/admin 查看
