haproxy負載均衡+pacemaker高可用
實驗環境
| server1（172.25.254.1）（hapoxy+pacemaker） | 安裝hapoxy+pacemaker |
| server2（172.25.254.2）(hapoxy+pacemaker） | 安裝hapoxy+pacemaker |
| server4（172.25.254.4）apache | 後端伺服器 |
| server5（172.25.254.5）apache | 後端伺服器 |
pacemaker
server1 和server2的haproxy配置一樣，能實作負載均衡
[[email protected] ~]# vim /etc/haproxy/haproxy.cfg
負載均衡測試：
server1 和server2的 pacemaker配置
systemctl start pcsd 開啟pcsd服務
pcs cluster start --all 激活叢集
pcs status 檢視叢集狀态
pcs resource create vip ocf:heartbeat:IPaddr2 ip=172.25.0.100 op monitor interval=30s 給叢集添加虛拟的VIP資源
pcs resource create haproxy systemd:haproxy op monitor interval=60s給叢集添加haproxy負載均衡服務資源
pcs resource group add hagroup vip haproxy 添加資源組
測試
關掉sever1 的叢集 server2自動開始接管 實作了高可用
[[email protected] ~]# pcs cluster stop server1
server1: Stopping Cluster (pacemaker)...
server1: Stopping Cluster (corosync)...
[[email protected] ~]# pcs status
Cluster name: mycluster
Stack: corosync
Current DC: server2 (version 1.1.19-8.el7-c3c624ea3d) - partition with quorum
Last updated: Mon Aug 10 17:43:04 2020
Last change: Mon Aug 10 17:18:57 2020 by root via cibadmin on server1
2 nodes configured
2 resources configured
Online: [ server2 ]
OFFLINE: [ server1 ]
Full list of resources:
Resource Group: hagroup
vip (ocf::heartbeat:IPaddr2): Started server2
haproxy (systemd:haproxy): Started server2
Failed Actions:
* haproxy_monitor_60000 on server2 'not running' (7): call=42, status=complete, exitreason='',
last-rc-change='Mon Aug 10 17:38:34 2020', queued=0ms, exec=0ms
Daemon Status:
corosync: active/disabled
pacemaker: active/disabled
pcsd: active/enabled