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pacemaker+corosync+haporxy高可用集群部署

时间:2018-06-12 16:25:52      阅读:212      评论:0      收藏:0      [点我收藏+]

标签:min   常用   for   127.0.0.1   utils   python   bak   mod   2.4   

# 安装 Corosync以及pacemaker 部署
yum install -y pacemaker pcs psmisc policycoreutils-python corosync fence-agents-all
systemctl start pcsd.service
systemctl enable pcsd.service
 
# 修改密码(全执行)
echo ‘HAcluster123‘ | passwd --stdin hacluster
 
# 验证集群
pcs cluster auth node71.ityunv.com node72.ityunv.com node73.ityunv.com -u hacluster -p HAcluster123 --force
 
# 创建集群
pcs cluster setup --name k8s_cluster01 node71.ityunv.com node72.ityunv.com node73.ityunv.com
 
# 启动集群
pcs cluster start --all
 
# 检查配置是否正确
crm_verify -L -V #一般情况会跳出个错误;
pcs property set stonith-enabled=false #禁用stonith;
pcs property set no-quorum-policy=ignore #无法仲裁时,选择忽略;
 
# 相关常用参数总结
pcs cluster enable --all #设置集群开机自动;
corosync-cfgtool -s #检查各节点通信状态(显示为no faults即为OK);
pcs status corosync #查看coyosync状态;
pcs status
 
crm: 是suse封装和开发维护的一个命令工具,功能强大并强烈推荐使用,但是红帽以及centos安装pacemaker以及corosync是不提供的,所以需要手动安装;
cd /etc/yum.repos.d/
wget http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-7/clustering.repo
yum makecache && yum -y install crmsh
 
#二、配置haproxy实现与corosync和pacemaker结合
 
# 2.1 安装并配置haproxy
yum install -y haproxy
mv /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak01
echo -e "net.ipv4.ip_nonlocal_bind = 1" >> /etc/sysctl.conf
sysctl -p
 
# 2.2 修改配置文件,如下:
cat > /etc/haproxy/haproxy.cfg << EOF
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
maxconn 4096
chroot /usr/share/haproxy
user haproxy
group haproxy
daemon
 
defaults
log global
mode tcp
timeout connect 5000ms
timeout client 50000ms
timeout server 50000ms
 
frontend stats-front
bind *:8088
mode http
default_backend stats-back
 
backend stats-back
mode http
balance source
stats uri /stats
stats auth admin:king111
 
listen Kubernetes-Cluster
bind 192.168.61.100:6443
balance leastconn
mode tcp
server k8s_71 192.168.61.71:6443 check inter 2000 fall 3
server k8s_72 192.168.61.72:6443 check inter 2000 fall 3
server k8s_73 192.168.61.73:6443 check inter 2000 fall 3
EOF
 
# 启动服务
systemctl restart haproxy
systemctl status haproxy
 
# 2.3 配置VIP 并 将Haproxy加入到PCS集群
# 需要Haproxy节点把开机启动项关闭, crm 进入 PCS 命令行模式:
systemctl disable haproxy
#第一种方式通过CRM进行配置:
crm config
primitive crm-vip ocf:heartbeat:IPaddr2 params ip=192.168.61.100 cidr_netmask=24 nic=eno16777984 op start interval=0s timeout=20s op stop interval=0s timeout=20s op monitor interval=20s timeout=30s meta priority=100
 
primitive haproxy systemd:haproxy op start interval=0s timeout=20s op stop interval=0s timeout=20s op monitor interval=20s timeout=30s meta priority=100 target-role=Started
colocation haproxy-with-vip inf: crm-vip:Started haproxy:Started
verify
commit
exit
 
# 查看状态:
crm status
 
# 第二种方式通过pcs进行配置:
pcs resource create pcs-vip ocf:heartbeat:IPaddr2 ip=192.168.61.100 cidr_netmask=24 nic=eno16777984 op monitor interval=15s
 
pcs resource create haproxy systemd:haproxy op monitor interval="5s"
pcs constraint colocation add pcs-vip haproxy INFINITY
pcs constraint order pcs-vip then haproxy
 
# 查看状态:
pcs status
 
# 删除资源
pcs resource delete haproxy
pcs resource delete pcs-vip
pcs resource delete crm-vip
 
#2.4 验证集群高可用
#可以自行试验,重启任意主机,看是否VIP切换到其他节点:
ip a

pacemaker+corosync+haporxy高可用集群部署

标签:min   常用   for   127.0.0.1   utils   python   bak   mod   2.4   

原文地址:https://www.cnblogs.com/ityunv/p/9173088.html

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