centos7安装rabbitmq，干货

1.1. 优化建议

对rabbitmq配置文件参数进行优化

1.2. 安装erlang

1.2.1. 安装依赖：

yum -y install gcc glibc-devel make ncurses-devel openssl-devel xmlto perl wget gtk2-devel binutils-devel

1.2.2. 下载安装包

erlang官网：https://www.erlang.org/downloads

由于下载的很慢，本地有一个已下载好的安装包，直接上传

wget http://erlang.org/download/otp_src_22.0.tar.gz

1.2.3. xftp上传安装包至/root目录下

1.2.4. 解压

tar -zxvf otp_src_22.0.tar.gz

1.2.5. 移动并进入目录

mv otp_src_22.0 /usr/local/

cd /usr/local/otp_src_22.0/

mkdir -p /usr/local/erlang

1.2.6. 配置安装路径

./configure --prefix=/usr/local/erlang

1.2.7. 安装

make

make install

ll /usr/local/erlang/bin #查看是否安装成功

1.2.8. 添加环境变量

echo 'export PATH=$PATH:/usr/local/erlang/bin' >> /etc/profile

使生效：

source /etc/profile

1.2.9. 检测环境变量是否可用

erl

输入 halt(). 退出

1.3. 安装rabbitmq

1.3.1. 下载rabbitmq

rabbitmq下载地址：

https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.7.15

wget https://github.com/rabbitmq/rabbitmq-server/releases/download/v3.7.15/rabbitmq-server-generic-unix-3.7.15.tar.xz

1.3.2. Xftp上传安装包至服务器/root

1.3.3. 安装解压插件并解压

yum install -y xz

/bin/xz -d rabbitmq-server-generic-unix-3.7.15.tar.xz #第一次解压

tar -xvf rabbitmq-server-generic-unix-3.7.15.tar #第二次解压

tar -xvf rabbitmq-server-3.8.19.tar.xz

1.3.4. 移动

mv rabbitmq_server-3.7.15/ /usr/local/rabbitmq

1.3.5. 配置环境变量

echo 'export PATH=$PATH:/usr/local/rabbitmq/sbin' >> /etc/profile

使生效

source /etc/profile

1.3.6. 创建配置目录

mkdir /etc/rabbitmq

1.3.7. 相关启动命令

启动：

rabbitmq-server -detached

停止：

rabbitmqctl stop

状态：

rabbitmqctl status

1.3.8. Web管理

开启web插件：

rabbitmq-plugins enable rabbitmq_management

浏览器访问:http://ip:15672/

默认账号密码：guest guest（这个账号只允许本机访问）

1.3.9. 用户管理

查看所有用户：

rabbitmqctl list_users

添加一个用户：

rabbitmqctl add_user zhangbo 123456

rabbitmqctl add_user cepo1113 Rabbitmq#0902@Cepo

配置权限：

rabbitmqctl set_permissions -p "/" cepo1113 ".*" ".*" ".*"

查看用户权限：

rabbitmqctl list_user_permissions cepo1113

设置tag：

rabbitmqctl set_user_tags cepo1113 administrator

删除用户（安全起见，删除默认用户）：

rabbitmqctl delete_user guest

添加普通用户

rabbitmqctl add_user test1 Rabbitmq#0902@Cepo

添加vhosts

rabbitmqctl add_vhost /test1

配置权限

rabbitmqctl set_permissions -p /test1 test1 '.*' '.*' '.*'

查看用户权限

rabbitmqctl list_permissions --vhost /test1

添加policy

rabbitmqctl set_policy --vhost /test1 --priority 1 --apply-to all test1 "^" '{"ha-mode":"all"}'

1.4. rabbitmq集群部署

1.4.1. 修改服务器hostname

vim /etc/hostname

第一台叫mq01，第二台叫mq02，第三台叫mq03

1.4.2. 修改dns文件

vim /etc/hosts

三台都需要做操作

10.20.1.2 mq01

10.20.1.3 mq02

10.20.1.3 mq03

添加 /etc/rabbitmq/rabbitmq-env.conf 文件

vim /etc/rabbitmq/rabbitmq-env.conf

三台分别是

NODENAME=rabbit@mq01

NODENAME=rabbit@mq02

NODENAME=rabbit@mq03

1.4.3. 杀死每个节点的mq

ps -ef | grep 5672

kill -9 pid

1.4.4. 查看.erlang.cookie

cd /root

ls -al

1.4.5. 将主节点的.erlang.cookie传输到其他节点

scp /root/.erlang.cookie root@10.20.1.3:/root/

scp /root/.erlang.cookie root@10.20.1.4:/root/

1.4.6. 开启rabbitmq服务

三台mq01，mq02，mq03都开启服务

rabbitmq-server -detached

1.4.7. 从节点执行命令

将 mq02 和 mq03 作为内存节点与 mq01 磁盘节点连接起来，在mq02 和 mq03 执行以下命令

rabbitmqctl stop_app #停掉rabbitmq应用

rabbitmqctl join_cluster rabbit@mq01 --ram #加入到磁盘节点

rabbitmqctl start_app #启动rabbitmq应用

rabbitmqctl cluster_status #查看集群状态

1.4.8. 设置自启动脚本

编辑脚本

vim /usr/local/rabbitmq/sbin/start_rabbitmq.sh

内容如下：

#!/bin/bash

export PATH=$PATH:/usr/local/erlang/bin

export HOME=/root/

/usr/local/rabbitmq/sbin/rabbitmq-server -detached

给脚本赋可执行权限

chmod +x /usr/local/rabbitmq/sbin/start_rabbitmq.sh

设置脚本自启动：

vim /etc/rc.d/rc.local

在最后边添加

/usr/local/rabbitmq/sbin/start_rabbitmq.sh

给rc.local赋权

chmod +x /etc/rc.d/rc.local

1.4.9. 检验服务是否自启动

三台服务器：reboot

1.4.10. 浏览器配置

访问http://ip:15672

使用zhangbo/123456用户登录

按照下述图片配置

1.4.11. 内存磁盘模式变更

rabbitmqctl stop_app

bbitmqctl change_cluster_node_type ram

rabbitmqctl change_cluster_node_type ram

rabbitmqctl start_app

rabbitmqctl cluster_status

2. 优化配置相关

优化配置命令相关：

ulimit -n 65535

-------------------------------------------------------------------------------------------

vim /etc/security/limits.conf

修改（添加内容）文件如下：

* soft noproc 10240

* hard noproc 10240

* soft nofile 65535

* hard nofile 65535

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vim /etc/sysctl.conf

内容如下：

net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1

net.ipv6.conf.lo.disable_ipv6 = 1

vm.swappiness = 0

net.ipv4.neigh.default.gc_stale_time=120

net.ipv4.conf.all.rp_filter=0

net.ipv4.conf.default.rp_filter=0

net.ipv4.conf.default.arp_announce = 2

net.ipv4.conf.lo.arp_announce=2

net.ipv4.conf.all.arp_announce=2

net.ipv4.tcp_max_tw_buckets = 5000

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_synack_retries = 2

kernel.sysrq=1

net.core.somaxconn = 60000

net.core.rmem_default = 262144

net.core.wmem_default = 262144

net.core.rmem_max = 16777216

net.core.wmem_max = 16777216

net.ipv4.tcp_rmem = 4096 4096 16777216

net.ipv4.tcp_wmem = 4096 4096 16777216

net.ipv4.tcp_mem = 786432 2097152 3145728

net.core.netdev_max_backlog = 20000

net.ipv4.tcp_fin_timeout = 15

net.ipv4.tcp_max_syn_backlog = 16384

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_tw_recycle = 1

net.ipv4.tcp_max_orphans = 131072

vm.overcommit_memory = 1

net.core.somaxconn = 2048

使上述配置生效：

sysctl -p

---------------------------------------------------------------------------

vim /etc/default/grub

内容如下：

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"

GRUB_DISABLE_RECOVERY="true"

-------------------------------------------------------------------------------------

vim /etc/pam.d/login

内容如下：

#%PAM-1.0

auth [user_unknown=ignore success=ok ignore=ignore default=bad] pam_securetty.so

auth substack system-auth

auth include postlogin

account required pam_nologin.so

account include system-auth

password include system-auth

# pam_selinux.so close should be the first session rule

session required pam_selinux.so close

session required pam_loginuid.so

session optional pam_console.so

# pam_selinux.so open should only be followed by sessions to be executed in the user context

session required pam_selinux.so open

session required pam_namespace.so

session optional pam_keyinit.so force revoke

session include system-auth

session include postlogin

-session optional pam_ck_connector.so

session required pam_limits.so

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ulimit -n

------------------------------------------------------------------------------------

ulimit -a

展示效果如下：

core file size (blocks, -c) 0

data seg size (kbytes, -d) unlimited

scheduling priority (-e) 0

file size (blocks, -f) unlimited

pending signals (-i) 63443

max locked memory (kbytes, -l) 64

max memory size (kbytes, -m) unlimited

open files (-n) 65535

pipe size (512 bytes, -p) 8

POSIX message queues (bytes, -q) 819200

real-time priority (-r) 0

stack size (kbytes, -s) 8192

cpu time (seconds, -t) unlimited

max user processes (-u) 63443

virtual memory (kbytes, -v) unlimited

file locks (-x) unlimited