EMQ Docker安装

简介:

在Centos上安装EMQX。

安装环境及版本:

系统环境:CentOS Linux release 7.5.1804 (Core) 
EMQ版本:v4.3.2

1 环境准备

1.1 关闭防火墙

关闭防火墙并设置为disable

[root@localhost ~]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)

1.2 关闭SELINUX

设置SELINUX=disabled

[root@localhost ~]# cat /etc/selinux/config 

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected. 
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

1.3 端口使用情况

安装组件

[root@localhost ~]# yum install net-tools
Loaded plugins: fastestmirror, product-id, search-disabled-repos, subscription-manager

…………………………..

Installed:
  net-tools.x86_64 0:2.0-0.25.20131004git.el7                                                                                                                                                                                                    

Complete!

查看端口使用情况

[root@localhost ~]# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      899/sshd            
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1134/master         
tcp6       0      0 :::22                   :::*                    LISTEN      899/sshd            
tcp6       0      0 ::1:25                  :::*                    LISTEN      1134/master

2 安装Docker

2.1 安装

[root@localhost ~]# yum -y install docker
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
。。。。。。。。。。。。。。。。。。。。。。
  libsepol.x86_64 0:2.5-10.el7   libxml2.x86_64 0:2.9.1-6.el7.5    policycoreutils.x86_64 0:2.5-34.el7   selinux-policy.noarch 0:3.13.1-268.el7_9.2   selinux-policy-targeted.noarch 0:3.13.1-268.el7_9.2  

Complete!
[root@localhost ~]#.

2.2 自启动

[root@localhost ~]# systemctl start docker
[root@localhost ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@localhost ~]# systemctl status docker

3 Docker操作

3.1 下载镜像

https://www.emqx.cn/downloads#broker
[root@localhost ~]# docker pull emqx/emqx:4.3.5
Trying to pull repository docker.io/emqx/emqx ... 
4.3.5: Pulling from docker.io/emqx/emqx
339de151aab4: Pull complete 
a8c774f539bc: Pull complete 
9f627e639d29: Pull complete 
bd780370e278: Pull complete 
77a85ead129f: Pull complete 
acdb5fa40cba: Pull complete 
41dc22c5ed57: Pull complete 
Digest: sha256:6546bf2ba46666ce721d5496cb75eb033298e3f1d76b89c44843cce11e0c2696
Status: Downloaded newer image for docker.io/emqx/emqx:4.3.5

查看下载的镜像

[root@localhost ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
docker.io/emqx/emqx   4.3.5               03b65cd2d825        3 weeks ago         154 MB

3.2 容器基本操作

3.2.1 创建并启动容器

启动容器

[root@localhost ~]# docker run -d --name emqx -p 1883:1883 -p 8081:8081 -p 8083:8083 -p 8084:8084 -p 8883:8883 -p 18083:18083 emqx/emqx:4.3.5
ea330bb58319044e7ace78fd707e4965369ed9774c4f6e5753baaaad4b56d57a
[root@localhost ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                                                                                                                                                                   NAMES
ea330bb58319        emqx/emqx:4.3.5     "/usr/bin/docker-e..."   5 seconds ago       Up 2 seconds        4369-4370/tcp, 5369/tcp, 0.0.0.0:1883->1883/tcp, 0.0.0.0:8081->8081/tcp, 0.0.0.0:8083-8084->8083-8084/tcp, 6369-6370/tcp, 0.0.0.0:8883->8883/tcp, 0.0.0.0:18083->18083/tcp, 11883/tcp   emqx

查看端口,此时端口已被映射

[root@localhost ~]# netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      899/sshd            
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1134/master         
tcp6       0      0 :::18083                :::*                    LISTEN      2323/docker-proxy-c 
tcp6       0      0 :::8081                 :::*                    LISTEN      2378/docker-proxy-c 
tcp6       0      0 :::8083                 :::*                    LISTEN      2364/docker-proxy-c 
tcp6       0      0 :::8883                 :::*                    LISTEN      2337/docker-proxy-c 
tcp6       0      0 :::8084                 :::*                    LISTEN      2351/docker-proxy-c 
tcp6       0      0 :::22                   :::*                    LISTEN      899/sshd            
tcp6       0      0 ::1:25                  :::*                    LISTEN      1134/master         
tcp6       0      0 :::1883                 :::*                    LISTEN      2390/docker-proxy-c

3.2.2 停止容器

[root@localhost ~]# docker stop ea330bb58319
ea330bb58319

3.2.3 启动容器

[root@localhost ~]# docker start ea330bb58319
ea330bb58319

3.2.4 容器中执行命令

[root@localhost ~]# docker exec -it ea330bb58319 bash
bash-5.0$ emqx_ctl status

3.3 Mnesia 认证

https://docs.emqx.cn/broker/v4.3/advanced/auth-mnesia.html

3.3.1 准备

进入容器执行命令

[root@localhost ~]# docker exec -it ea330bb58319 bash
bash-5.0$

查看当前路径及内容

bash-5.0$ pwd
/opt/emqx
bash-5.0$ ls -l
total 4
drwxrwxr-x    1 emqx     emqx           301 Jun 28 06:57 bin
drwxrwxr-x    6 emqx     emqx           109 Jul 19 10:31 data
drwxrwxr-x    1 emqx     emqx            17 Jun 28 06:57 erts-11.1.8
drwxrwxr-x    5 emqx     emqx           135 Jul 19 10:31 etc
drwxrwxr-x    1 emqx     emqx          4096 Jun 28 06:57 lib
drwxrwxr-x    2 emqx     emqx             6 Jul 19 10:31 log
drwxrwxr-x    1 emqx     emqx            74 Jun 28 06:57 releases

3.3.2 配置文件

bash-5.0$ vi etc/plugins/emqx_auth_mnesia.conf
4: auth.mnesia.password_hash = sha256

25:auth.user.1.username = pyrk   
26:auth.user.1.password = pyrk-0811

3.3.3 加载插件

bash-5.0$ vi data/loaded_plugins 
bash-5.0$ cat data/loaded_plugins 
{emqx_management, true}.
{emqx_dashboard, true}.
{emqx_modules, false}.
{emqx_recon, true}.
{emqx_retainer, true}.
{emqx_telemetry, true}.
{emqx_rule_engine, true}.
{emqx_bridge_mqtt, false}.
{emqx_auth_mnesia, true}.

3.3.4 重启

bash-5.0$ emqx restart

3.3.5 查看插件状态

[root@localhost ~]# docker start ea330bb58319
ea330bb58319
[root@localhost ~]# docker exec -it ea330bb58319 bash

bash-5.0$ emqx_ctl status
Node 'ea330bb58319@172.17.0.2' 4.3.5 is started

3.4 EMQX配置

3.4.1 基础配置

bash-5.0$ vi etc/emqx.conf
187:node.name = emqx@127.0.0.1
594:allow_anonymous = false  
648:mqtt.max_packet_size = 1KB
1076:listener.tcp.external.acceptors = 1024
1313:listener.ssl.external.acceptors = 1024

3.4.2 SSL

拷贝证书

[root@localhost ~]# docker cp /root/cacert-20191215/key.pem ea330bb58319:/opt/emqx/etc/certs
[root@localhost ~]# docker cp /root/cacert-20191215/cert.pem ea330bb58319:/opt/emqx/etc/certs
[root@localhost ~]# docker cp /root/cacert-20191215/cacert.pem ea330bb58319:/opt/emqx/etc/certs

修改配置文件

bash-5.0$ vi etc/emqx.conf
1387:listener.ssl.external.keyfile = etc/certs/key.pem
1394:listener.ssl.external.certfile = etc/certs/cert.pem
1400: listener.ssl.external.cacertfile = etc/certs/cacert.pem

4 制作镜像文件

4.1 创建镜像

[root@localhost ~]# docker commit ea330bb58319 emqx_img
sha256:afd3a2982c076f8ac31cf4a77c00cd57ab518f5f33cef32bb9ddfc1da0f55e5b
[root@localhost ~]# docker images
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
emqx_img              latest              afd3a2982c07        4 seconds ago       154 MB
docker.io/emqx/emqx   4.3.5               03b65cd2d825        3 weeks ago         154 MB

4.2 保存文件

[root@localhost ~]# docker save -o emqx_20210719 emqx_img
[root@localhost ~]# ls
anaconda-ks.cfg  cacert-20191215  emqx_20210719

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