My Ubuntu 14.04 中的 Mosquitto 安装

Question

我想在我的 Ubuntu 14.04 LTS

中安装 Mosquitto

sudo apt-add-repository ppa:mosquitto-dev/mosquitto-ppa
sudo apt-get update
sudo apt-get install mosquitto-clients

但我在测试安装时出错:

devuser@localhost:~$ mosquitto_sub -t '$SYS/#' -v
Error: Connection refused

从外部 ping 主机没问题：

ping 199.162.221.117
PING 199.162.221.117 (199.162.221.117): 56 data bytes
64 bytes from 199.162.221.117: icmp_seq=0 ttl=55 time=102.234 ms

但不是

ping 199.162.221.117:1883
ping: cannot resolve 199.162.221.117:1883: Unknown host

还有

devuser@localhost:~$ sudo start mosquitto
[sudo] password for devuser: 
start: Unknown job: mosquitto

还有

devuser@localhost:~$ sudo /etc/init.d/mosquitto start
sudo: /etc/init.d/mosquitto: command not found

Answer 1

您只安装了 mosquitto 命令行客户端（mosquitto_sub & mosquitto_pub）而不是实际的代理

$ sudo apt-get install mosquitto

这应该会安装实际的代理，然后您就可以使用您列出的最后一条命令启动它

Mosquitto installation in My Ubuntu 14.04