# ll
total 556
-rw-r----- 1 sk sk 148417 Mar  6 14:59 libuv-1.44.2-1.el7.x86_64.rpm
-rw-r----- 1 sk sk 120717 Mar  6 14:59 libwebsockets-3.0.1-2.el7.x86_64.rpm
-rw-r----- 1 sk sk 293429 Mar  6 14:59 mosquitto-1.6.10-1.el7.x86_64.rpm

将用到的依赖上传到主机上，分别安装lib*类依赖

1.安装libuv-1.44.2-1.el7.x86_64.rpm

# sudo yum install libuv-1.44.2-1.el7.x86_64.rpm -y
Loaded plugins: fastestmirror
Examining libuv-1.44.2-1.el7.x86_64.rpm: 1:libuv-1.44.2-1.el7.x86_64
Marking libuv-1.44.2-1.el7.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package libuv.x86_64 1:1.44.2-1.el7 will be installed
--> Finished Dependency ResolutionDependencies Resolved==================================================================================================================================================Package                    Arch                        Version                             Repository                                       Size
==================================================================================================================================================
Installing:libuv                      x86_64                      1:1.44.2-1.el7                      /libuv-1.44.2-1.el7.x86_64                      393 kTransaction Summary
==================================================================================================================================================
Install  1 PackageTotal size: 393 k
Installed size: 393 k
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transactionInstalling : 1:libuv-1.44.2-1.el7.x86_64                                                                                                    1/1 Verifying  : 1:libuv-1.44.2-1.el7.x86_64                                                                                                    1/1 Installed:libuv.x86_64 1:1.44.2-1.el7                                                                                                                     Complete!

2.安装libwebsockets-3.0.1-2.el7.x86_64.rpm

# sudo yum install libwebsockets-3.0.1-2.el7.x86_64.rpm  -y
Loaded plugins: fastestmirror
Examining libwebsockets-3.0.1-2.el7.x86_64.rpm: libwebsockets-3.0.1-2.el7.x86_64
Marking libwebsockets-3.0.1-2.el7.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package libwebsockets.x86_64 0:3.0.1-2.el7 will be installed
--> Finished Dependency ResolutionDependencies Resolved==================================================================================================================================================Package                         Arch                     Version                       Repository                                           Size
==================================================================================================================================================
Installing:libwebsockets                   x86_64                   3.0.1-2.el7                   /libwebsockets-3.0.1-2.el7.x86_64                   269 kTransaction Summary
==================================================================================================================================================
Install  1 PackageTotal size: 269 k
Installed size: 269 k
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transactionInstalling : libwebsockets-3.0.1-2.el7.x86_64                                                                                               1/1 Verifying  : libwebsockets-3.0.1-2.el7.x86_64                                                                                               1/1 Installed:libwebsockets.x86_64 0:3.0.1-2.el7                                                                                                              Complete!

3.最后安装mqtt

# sudo yum install -y mosquitto-1.6.10-1.el7.x86_64.rpm 
Loaded plugins: fastestmirror
Examining mosquitto-1.6.10-1.el7.x86_64.rpm: mosquitto-1.6.10-1.el7.x86_64
Marking mosquitto-1.6.10-1.el7.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package mosquitto.x86_64 0:1.6.10-1.el7 will be installed
--> Finished Dependency ResolutionDependencies Resolved==================================================================================================================================================Package                      Arch                      Version                           Repository                                         Size
==================================================================================================================================================
Installing:mosquitto                    x86_64                    1.6.10-1.el7                      /mosquitto-1.6.10-1.el7.x86_64                    748 kTransaction Summary
==================================================================================================================================================
Install  1 PackageTotal size: 748 k
Installed size: 748 k
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transactionInstalling : mosquitto-1.6.10-1.el7.x86_64                                                                                                  1/1 Verifying  : mosquitto-1.6.10-1.el7.x86_64                                                                                                  1/1 Installed:mosquitto.x86_64 0:1.6.10-1.el7                                                                                                                 Complete!

mosquitto的启动检查命令

service mosquitto start
service mosquitto stop
service mosquitto restart
service mosquitto status

检查运行状态

# service  mosquitto status
Redirecting to /bin/systemctl status mosquitto.service
● mosquitto.service - Mosquitto MQTT v3.1/v3.1.1 BrokerLoaded: loaded (/usr/lib/systemd/system/mosquitto.service; disabled; vendor preset: disabled)Active: inactive (dead)Docs: man:mosquitto.conf(5)man:mosquitto(8)# service  mosquitto start
Redirecting to /bin/systemctl start mosquitto.service
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to manage system services or units.
Authenticating as: root
Password: # sudo service  mosquitto start   
Redirecting to /bin/systemctl start mosquitto.service# sudo service  mosquitto status
Redirecting to /bin/systemctl status mosquitto.service
● mosquitto.service - Mosquitto MQTT v3.1/v3.1.1 BrokerLoaded: loaded (/usr/lib/systemd/system/mosquitto.service; disabled; vendor preset: disabled)Active: active (running) since Mon 2023-03-06 16:59:16 CST; 5s agoDocs: man:mosquitto.conf(5)man:mosquitto(8)Main PID: 32450 (mosquitto)Tasks: 1Memory: 856.0KCGroup: /system.slice/mosquitto.service└─32450 /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.confMar 06 16:59:16 hostname systemd[1]: Starting Mosquitto MQTT v3.1/v3.1.1 Broker...
Mar 06 16:59:16 hostname mosquitto[32450]: 1678093156: mosquitto version 1.6.10 starting
Mar 06 16:59:16 hostname mosquitto[32450]: 1678093156: Config loaded from /etc/mosquitto/mosquitto.conf.
Mar 06 16:59:16 hostname mosquitto[32450]: 1678093156: Opening ipv4 listen socket on port 1883.
Mar 06 16:59:16 hostname mosquitto[32450]: 1678093156: Opening ipv6 listen socket on port 1883.
Mar 06 16:59:16 hostname systemd[1]: Started Mosquitto MQTT v3.1/v3.1.1 Broker.

验证是否可用

打开两个终端，模拟发送端与接收端，其中，-t  指定主题  -m 指定内容

a.接收端

# mosquitto_sub  -h 10.19.49.27 -t "mostt"  -v

b.发送端

# mosquitto_pub -h 10.15.49.27 -t  "mostt" -m "hello word"
# mosquitto_pub -h 10.15.49.27 -t  "mostt" -m "hello word"
# mosquitto_pub -h 10.15.49.27 -t  "mostt" -m "hello word3"
# mosquitto_pub -h 10.15.49.27 -t  "mostt" -m "hello word3"
# mosquitto_pub -h 10.15.49.27 -t  "mostt" -m "hello word4"# mosquitto_pub -h 10.15.49.27 -t  "01topic" -m "mosquitto test01"
# mosquitto_pub -h 10.15.49.27 -t  "01topic" -m "mosquitto test02"
# mosquitto_pub -h 10.15.49.27 -t  "01topic" -m "mosquitto test03"

此时，再查看接收端，哪个主题下的哪些内容

# mosquitto_sub  -h 10.15.49.27 -t "mostt"  -v mostt hello word
mostt hello word
mostt hello word3
mostt hello word3
mostt hello word4# mosquitto_sub  -h 10.15.49.27 -t "01topic"  -v           
01topic mosquitto test01
01topic mosquitto test02
01topic mosquitto test03

跟kafka类似，访问安全性中都可以设置访问时的用户名密码

添加如下文件内容

# sudo less  /etc/mosquitto/mosquitto.conf  | grep -v "#" |grep  -v "^$"
pid_file /var/run/mosquitto.pid
persistence true
persistence_location /var/lib/mosquitto/
allow_anonymous false
password_file /etc/mosquitto/pwdfile
acl_file /etc/mosquitto/acl

参数含义

# 进程号文件
pid_file /var/run/mosquitto.pid# 是否持久化
persistence true 
persistence_location /var/lib/mosquitto/# 关闭匿名访问
allow_anonymous false# 密码和访问控制
password_file /etc/mosquitto/pwdfile
acl_file /etc/mosquitto/acl

设置Mosquitto的交互账号

# sudo mosquitto_passwd -c /etc/mosquitto/pwdfile testuser1
Password: 
Reenter password: # sudo mosquitto_passwd /etc/mosquitto/pwdfile testuser2    
Password: 
Reenter password: 

第一个账号需要加-c参数，因为密码文件没有生成，后面的账号不需要再加c参数，否则是重新生成密码文件并写入账号。

配置账号与发布订阅之间的关系：

vim /etc/mosquitto/acl

# cat /etc/mosquitto/acl
user testuser1
topic write usertopic
user testuser2
topic read usertopic

设置testuser1账号只能在主题usertopic上进行发布

设置testuser2账号只能在主题usertopic上进行订阅

重启服务

# sudo service mosquitto status
Redirecting to /bin/systemctl status mosquitto.service
● mosquitto.service - Mosquitto MQTT v3.1/v3.1.1 BrokerLoaded: loaded (/usr/lib/systemd/system/mosquitto.service; disabled; vendor preset: disabled)Active: active (running) since Mon 2023-03-06 16:59:16 CST; 46min agoDocs: man:mosquitto.conf(5)man:mosquitto(8)Main PID: 32450 (mosquitto)Tasks: 1Memory: 872.0KCGroup: /system.slice/mosquitto.service└─32450 /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.confMar 06 17:17:46 hostname mosquitto[32450]: 1678094266: New connection from 10.15.49.27 on port 1883.
Mar 06 17:17:46 hostname mosquitto[32450]: 1678094266: New client connected from 10.15.49.27 as mosq-D0pkHhYybXF0xuGhDW (p2, c1, k60).
Mar 06 17:17:46 hostname mosquitto[32450]: 1678094266: Client mosq-D0pkHhYybXF0xuGhDW disconnected.
Mar 06 17:17:49 hostname mosquitto[32450]: 1678094269: New connection from 10.15.49.27 on port 1883.
Mar 06 17:17:49 hostname mosquitto[32450]: 1678094269: New client connected from 10.15.49.27 as mosq-IujfILsMdH7PyItQVe (p2, c1, k60).
Mar 06 17:17:49 hostname mosquitto[32450]: 1678094269: Client mosq-IujfILsMdH7PyItQVe disconnected.
Mar 06 17:17:51 hostname mosquitto[32450]: 1678094271: New connection from 10.15.49.27 on port 1883.
Mar 06 17:17:51 hostname mosquitto[32450]: 1678094271: New client connected from 10.15.49.27 as mosq-J1wdgGJ57LPjucsxIh (p2, c1, k60).
Mar 06 17:17:51 hostname mosquitto[32450]: 1678094271: Client mosq-J1wdgGJ57LPjucsxIh disconnected.
Mar 06 17:34:31 hostname mosquitto[32450]: 1678095271: Client mosq-daklhgLG1gK0voclKu disconnected.
[sk@hostname ~]$ 
[sk@hostname ~]$ sudo service mosquitto restart
Redirecting to /bin/systemctl restart mosquitto.service
[sk@hostname ~]$ 
[sk@hostname ~]$ sudo service mosquitto status
Redirecting to /bin/systemctl status mosquitto.service
● mosquitto.service - Mosquitto MQTT v3.1/v3.1.1 BrokerLoaded: loaded (/usr/lib/systemd/system/mosquitto.service; disabled; vendor preset: disabled)Active: active (running) since Mon 2023-03-06 17:45:39 CST; 4s agoDocs: man:mosquitto.conf(5)man:mosquitto(8)Main PID: 10859 (mosquitto)Tasks: 1Memory: 856.0KCGroup: /system.slice/mosquitto.service└─10859 /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.confMar 06 17:45:39 hostname systemd[1]: Starting Mosquitto MQTT v3.1/v3.1.1 Broker...
Mar 06 17:45:39 hostname mosquitto[10859]: 1678095939: mosquitto version 1.6.10 starting
Mar 06 17:45:39 hostname mosquitto[10859]: 1678095939: Config loaded from /etc/mosquitto/mosquitto.conf.
Mar 06 17:45:39 hostname mosquitto[10859]: 1678095939: Opening ipv4 listen socket on port 1883.
Mar 06 17:45:39 hostname mosquitto[10859]: 1678095939: Opening ipv6 listen socket on port 1883.
Mar 06 17:45:39 hostname systemd[1]: Started Mosquitto MQTT v3.1/v3.1.1 Broker.

订阅和发布主题都需要提供正确的账号和指定的主题，如果主题不是acl中指定的，则无法收到消息。需要给用户授权。

# sudo mosquitto_pub -h  10.15.49.27 -t "usertopic" -u testuser1 -P 123456 -m "secreat" 
# sudo mosquitto_pub -h  10.15.49.27 -t "usertopic" -u testuser1 -P 123456 -m "secreat2323"

# sudo mosquitto_sub -h 10.15.49.27 -t "usertopic" -v -u  testuser2 -P 123456 
usertopic secreat
usertopic secreat2323