My docker essay 41: mqtt service deployment

I. Introduction

Due to work needs, mqtt server needs to be deployed for testing.

2. Technical summary

The relevant images on dockerhub can be directly pulled and available. After checking, eclipse-mosquittothere is official certification OFFICIAL, so I use this version 2.0.15.
First start the container, obtain the configuration file, set the user and password, and generate the account file.
Modify the configuration and attach the account file.
Use client testing.

3. Practice

download

Order:

docker pull eclipse-mosquitto:2.0.15

Get configuration

Get the configuration file and create a password:

docker run --rm -it -v /tmp/config:config/mqtt --rm --name mqtt eclipse-mosquitto:2.0.15 sh

cd /tmp/config/
cp /mosquitto/config/mosquitto.conf .

touch /tmp/config/latelee.conf
mosquitto_passwd -b /tmp/config/latelee.conf latelee 123456
cat /tmp/config/latelee.conf 
latelee:$7$101$8uztnbWciNtQhAB+$ElyWv714QaN8E/DOt9wzN/fRs9MdXtmpuq1xJifPKVfno1meGzCp4UnkZErM3WbaZtWIL/tKaxq72dXJ8oRwKw==
exit

If you want to create multiple users, mosquitto_passwd -b /tmp/config/latelee.conf <用户> <密码>just execute.

Change setting

Re-edit the file mosquitto.conf:

persistence true
persistence_file mosquitto.db
persistence_location /mosquitto/data
log_dest file /mosquitto/log/mosquitto.log

allow_anonymous false
password_file /mosquitto/config/latelee.conf

# 默认端口是 1883
port 1883

# 以下两行表示可以通过9001端口以websocket的方式连接mosquitto服务
#listener 9001
#protocol websockets

docker-compose configuration

Docker-compose.yaml file content:

  ll-mqtt:
    image: eclipse-mosquitto:2.0.15 
    container_name: ll-mqtt
    hostname: ll-mqtt
    # privileged: true 
    restart: always
    #command: xxx
    volumes:
      - ./config/mqtt:/mosquitto/config
      - ./mqttdata:/mosquitto/data
      - ./mqttlog:/mosquitto/log
    environment:
      - TZ=Asia/Shanghai
    ports:
      - "11883:1883"
      #- "19001:9001"
    networks:
      stdtoll-net:
        ipv4_address: 172.18.200.30

start up:

docker-compose up -d ll-mqtt

Note: It seems to start slowly

4. Test

Use MQTTXthe tool to test, the address is here .

New link

An example link configuration is as follows:
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After entering the correct information, the connection is successful:
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Add new subscription

Use default topic
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Send a message

Select subscription, enter Topic, and send. as the picture shows.
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5. Multi-user testing

For the sake of simplicity, the same operations as the previous ones are omitted.

Add multiple user information:

mosquitto_passwd -b /tmp/config/latelee.conf latelee1 123456
# cat latelee.conf 
latelee:$7$101$sBW5H73ll8re2i1F$JHHLDgQC8QN/Ig2y3dYw4QOVvAx1HyBSc94KW7y6E3rlCyDdeC909GhRjS5BW5RM4AARzO6xknhmDt1PvahAxA==
latelee1:$7$101$iZDWCtfmj9oby9BH$RoSTqv37knkc9Ow1O9f7N241KBv1TiLXRphg4xOnLQuHxEj5PQHcjLRkxj34Eqbjz6Cvvs2f1vgf9o+Kgg3qPg==
latelee2:$7$101$AcmF60V2ymIiGSJh$55FiXACOO7k9d20Pz4nt/mSTryVsQ+L+G59ihjDziz408JZWaIm41fisIu0AYITxZ+5bDgHM1IXPkjYos+AT6Q==
latelee3:$7$101$jCVWCbIsbRNuP+zv$IGdfF/E5LVWxRUSk3a+x5AXks9tFFbN3R6cqBnoq+aHpQxvzqrcn8fJtuSz2e3uokZyiPTosumcTx15cyeqkpA==

To be realized.

Reference: https://www.ifsvc.cn/posts/160

6. Advanced

The user of the mounted file will become 1883because it is set in the image, but the system does not have its corresponding user name.

Users in the mirror:

cat /etc/passwd
root:x:0:0:root:/root:/bin/ash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
mosquitto:x:1883:1883:mosquitto:/var/empty:/sbin/nologin

The user mosquitto's ID is 1883. Directory permissions were changed in the image's startup script:

cat /docker-entrypoint.sh 
#!/bin/ash
set -e

# Set permissions
user="$(id -u)"
if [ "$user" = '0' ]; then
        [ -d "/mosquitto" ] && chown -R mosquitto:mosquitto /mosquitto || true
fi

exec "$@"

7. Reference

mqtt mirror: https://hub.docker.com/_/eclipse-mosquitto

attached

If no port is specified, it will prompt:

1679721126: mosquitto version 2.0.15 starting
1679721126: Config loaded from /mosquitto/config/mosquitto.conf.
1679721126: Starting in local only mode. Connections will only be possible from clients running on this machine.
1679721126: Create a configuration file which defines a listener to allow remote access.
1679721126: For more details see https://mosquitto.org/documentation/authentication-methods/
1679721126: Opening ipv4 listen socket on port 1883.
1679721126: Opening ipv6 listen socket on port 1883.
1679721126: Error: Address not available
1679721126: mosquitto version 2.0.15 running

Connection log:

1679721710: New connection from 192.168.28.11:62840 on port 1883.
1679721710: New client connected from 192.168.28.11:62840 as mqttx_5607984c (p5, c1, k60, u'latelee').
1679721767: New connection from 192.168.28.11:62868 on port 1883.
1679721767: New client connected from 192.168.28.11:62868 as mqttx_67e55882 (p5, c1, k60, u'latelee').

When using MQTTXthe tool to send a message, you must enter the correct Topic without wildcard characters such as "#".
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