RabbitMq 高可用集群搭建

安装环境
Centos-7

三台虚拟机
192.168.8.150(磁盘节点)
192.168.8.45 (内存节点)
192.168.8.40 (内存节点)

一、安装Erlang
1、erlang 下载地址:
http://www.rabbitmq.com/releases/erlang/

2、创建目录
mkdir -p /usr/local/tools/rabbitmq
cd /usr/local/tools/rabbitmq

3、下载安装包
wget http://www.rabbitmq.com/releases/erlang/erlang-19.0.4-1.el6.x86_64.rpm

4、安装
rpm -ivh erlang-19.0.4-1.el6.x86_64.rpm

二、安装RabbitMQ
1、rabbitMQ 下载地址
https://dl.bintray.com/rabbitmq/rabbitmq-server-rpm/

2、下载安装包
wget https://dl.bintray.com/rabbitmq/rabbitmq-server-rpm/rabbitmq-server-3.6.12-1.el6.noarch.rpm
rpm --import https://www.rabbitmq.com/rabbitmq-release-signing-key.asc

3、安装
rpm -ivh rabbitmq-server-3.6.12-1.el6.noarch.rpm

问题解决
1、错误:依赖检测失败:
socat 被 rabbitmq-server-3.6.12-1.el6.noarch 需要
解决报错:
wget –no-cache http://www.convirture.com/repos/definitions/rhel/6.x/convirt.repo -O /etc/yum.repos.d/convirt.repo
yum makecache -y
yum install socat -y

2、如果yum源有问题,无法安装:将CentOS的yum源更换为国内的阿里云源
使用yum时File contains no section headers.解决办法
http://xiaojingjing.iteye.com/blog/2393165
rm -f /etc/yum.repos.d/*
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum clean all

三、集群配置
1、hosts配置
三台机器的hosts都配置
vim /etc/hosts
192.168.8.150 rabbit1 (磁盘节点)
192.168.8.45 rabbit2(内存节点)
192.168.8.40 rabbit3(内存节点)

2、同步.erlang.cookie
保持三台机器的.erlang.cookie同步
/var/lib/rabbitmq/.erlang.cookie

在第二台机器8.45执行:
scp .erlang.cookie [email protected]:/var/lib/rabbitmq/
chown rabbitmq:rabbitmq .erlang.cookie

在第三台机器8.40执行:
scp .erlang.cookie [email protected]:/var/lib/rabbitmq/
chown rabbitmq:rabbitmq .erlang.cookie

重启服务
systemctl stop rabbitmq-server.service
systemctl start rabbitmq-server.service

或:systemctl restart rabbitmq-server.service
查看服务状态:systemctl status rabbitmq-server.service

如果启动报错:
Job for rabbitmq-server.service failed because the control process exited with error code. See "systemctl status rabbitmq-server.service" and "journalctl -xe" for details.

如果是因为服务停不掉,就要kill 端口。

3、加入集群
首先开放集群通信端口:

firewall-cmd --permanent --add-port={5672/tcp,4369/tcp,25672/tcp}

firewall-cmd --reload

setsebool -P nis_enabled 1

在第二台45,第三台机,40上执行:
rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl join_cluster rabbit@rabbit1 --ram

创建用户:三台服务器都执行
firewall-cmd --permanent --add-port=15672/tcp
firewall-cmd –-reload
rabbitmqctl add_user admin admin
rabbitmqctl set_user_tags admin administrator
rabbitmqctl set_permissions -p / admin "." "." ".*"

4、
RabbitMQ镜像队列
可以参考:
https://www.cnblogs.com/saneri/p/7798251.html

5、HAProxy + Keepalived 高可用方案

一、HAProxy
将5672端口映射为5673端口,15672端口映射为15673端口。

1)在两个内存节点上安装HAProxy
yum install haproxy

2)编辑配置文件
vim /etc/haproxy/haproxy.cfg

内容修改为:
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
stats socket /var/lib/haproxy/stats

defaults
log global
option dontlognull
option redispatch
retries 3
timeout connect 10s
timeout client 1m
timeout server 1m
maxconn 3000

listen http_front
mode http
bind 0.0.0.0:1080 #监听端口
stats refresh 30s #统计页面自动刷新时间
stats uri /haproxy?stats #统计页面url
stats realm Haproxy Manager #统计页面密码框上提示文本
stats auth admin:123456 #统计页面用户名和密码设置

listen rabbitmq_admin
bind 0.0.0.0:15673
server node1 192.168.8.40:15672
server node2 192.168.8.45:15672

listen rabbitmq_cluster 0.0.0.0:5673
mode tcp
balance roundrobin
timeout client 3h
timeout server 3h
timeout connect 3h
server node1 192.168.8.40:5672 check inter 5s rise 2 fall 3
server node2 192.168.8.45:5672 check inter 5s rise 2 fall 3

3)启动HAProxy
haproxy -f /etc/haproxy/haproxy.cfg

二、在两个内存节点上安装Keepalived
VIP 为 192.168.8.201

1)安装Keepalived
yum -y install keepalived

2)修改配置文件
vim /etc/keepalived/keepalived.conf

内容改成(物理网卡和当前主机IP要修改):
global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
vrrp_skip_check_adv_addr

vrrp_strict # 注释掉,不然访问不到VIP

vrrp_garp_interval 0
vrrp_gna_interval 0
}
global_defs {
notification_email {
[email protected]
[email protected]
[email protected]
}
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL
vrrp_skip_check_adv_addr

vrrp_strict # 注释掉,不然访问不到VIP

vrrp_garp_interval 0
vrrp_gna_interval 0
}

检测任务

vrrp_script check_haproxy {
# 检测HAProxy监本
script "/etc/keepalived/script/check_haproxy.sh"
# 每隔两秒检测
interval 2
# 权重
weight 2
}

虚拟组

vrrp_instance haproxy {
state MASTER # 此处为,备机是 BACKUP【此处要修改】
interface ens33 # 物理网卡,根据情况而定 【此处要修改】
mcast_src_ip 192.168.8.40 # 当前主机ip 【此处要修改】
virtual_router_id 51 # 虚拟路由id,同一个组内需要相同
priority 100 # 主机的优先权要比备机高
advert_int 1 # 心跳检查频率,单位:秒
authentication { # 认证,组内的要相同
auth_type PASS
auth_pass 1111
}
# 调用脚本
track_script {
check_haproxy
}
# 虚拟ip,多个换行
virtual_ipaddress {
192.168.8.201
}
}

3)启动keepalived
keepalived -D

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