如何在 Ubuntu 16.04 启动时启动 Mosquitto MQTT 代理

如何在 Ubuntu 16.04 启动时启动 Mosquitto MQTT 代理

我正在尝试在 Ubuntu 16.04 上运行 Mosquitto MQTT Broker。我有 14.04 的说明,但由于 16.04 不再使用启动,我不知道如何转换为 systemd。

以下是 14.04 的命令:

description "Mosquitto MQTT broker"
start on net-device-up
respawn
exec /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf

编辑:

这是我目前得到的结果。当我重新启动并运行时,systemctl status mosquitto.service我发现 mosquitto 已加载但未处于活动状态:

[Unit]
Description=Mosquitto MQTT Broker

[Service]
WorkingDirectory=/usr/sbin/mosquitto
ExecStart=/etc/mosquitto/mosquitto.conf
Restart=always

[Install]
WantedBy=multi-user.target

编辑2:

跑了sudo systemctl enable mosquitto.service。现在错误退出代码是:

Process: 1720 ExecStart=/etc/mosquitto/mosquitto.conf (code=exited, status=200/CHDIR)

答案1

安装sudo apt install mosquitto在上16.04会添加/etc/init.d/mosquitto脚本。systemd 使用该脚本生成/run/systemd/generator.late/mosquitto.service,内容如下:

# Automatically generated by systemd-sysv-generator

[Unit]
Documentation=man:systemd-sysv-generator(8)
SourcePath=/etc/init.d/mosquitto
Description=LSB: mosquitto MQTT v3.1 message broker
Before=multi-user.target
Before=multi-user.target
Before=multi-user.target
Before=graphical.target
Before=shutdown.target
After=remote-fs.target
After=systemd-journald-dev-log.socket
Conflicts=shutdown.target

[Service]
Type=forking
Restart=no
TimeoutSec=5min
IgnoreSIGPIPE=no
KillMode=process
GuessMainPID=no
RemainAfterExit=yes
ExecStart=/etc/init.d/mosquitto start
ExecStop=/etc/init.d/mosquitto stop
ExecReload=/etc/init.d/mosquitto reload

向内看/etc/init.d/mosquitto告诉我们

/usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf已默认运行

因此,只需将您的配置放入/etc/mosquitto/conf.d(引用自mosquitto.conf)中并享受


作为常规的 systemd 服务,您可以:

  • systemctl status mosquitto查看其当前状态
  • sudo systemctl (start|stop) mosquitto更改当前会话的状态
  • sudo systemctl (enable|disable) mosquitto改变启动行为(不影响当前状态)

答案2

确保 mosquitto 正在运行:

ps -aux | grep mosquitto

你有这个默认配置文件

listener 1883

答案3

您的单元文件ExecStart=WorkingDirectory=行完全错误。您是否尝试启动配置文件,并使用可执行文件(!)作为其工作目录?

如果我理解正确的话,正确的单元文件应该是:

[Unit]
Description=Mosquitto MQTT Broker
After=network.target

[Service]
ExecStart=/usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
Restart=always

[Install]
WantedBy=multi-user.target

另外,请不要混淆启动和启用设备。阅读我对此的类似回答:

答案4

就我而言,我需要使用以下命令启动服务:

sudo systemctl start mosquitto.service

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