|[Back - Chapter 5](https://github.com/xuan103/MQTT/blob/main/document/AWS:%20EC2_For_Ubuntu_SSH.md)|[Contents](https://github.com/xuan103/MQTT/blob/main/README.md)| [Next - Chapter 7](https://github.com/xuan103/MQTT/blob/main/document/AWS:%20EC2_MQTTlens_MQTT.md) ---| ---| ---| # Chapter 6: EC2: Install Mosquitto MQTT Broker --- ### 前置準備作業 - [AWS: EC2 Install Ubuntu](https://github.com/xuan103/MQTT/blob/main/document/AWS:%20EC2_Install_Ubuntu.md) --- ### AWS EC2 Ubuntu Server 端 #### Step 1. 登入到 AWS EC2 - AWS: EC2 登入 - [EC2: For Ubuntu](https://github.com/xuan103/MQTT/blob/main/document/AWS:%20EC2_For_Ubuntu_SSH.md) --- #### Step 2. 安裝 Mosquitto MQTT Broker - 取得遠端更新伺服器的套件檔案清單 >$ sudo apt update ![mq1_system_update](https://github.com/xuan103/MQTT/blob/main/document/png/mq1_system_update.png) >--- 安裝 Mosquitto MQTT Broker >$ sudo apt install -y mosquitto mosquitto-clients ![mq2_install_mosquitto](https://github.com/xuan103/MQTT/blob/main/document/png/mq2_install_mosquitto.png) --- Step 3. 測試 Mosquitto MQTT Broker - 前置準備作業: - Publish、Subscribe 測試 - 查看 [AWS](https://aws.amazon.com/tw/) EC2 IP 位置 - 開啟兩個終端機 - 一台為 Subscribe - 一台為 Publish >--- ![mq3-1_show](https://github.com/xuan103/MQTT/blob/main/document/png/mq3-1_show.png) >--- 查看 [AWS](https://aws.amazon.com/tw/) EC2 IP 位置 IP 位於 " IPv4 Public IP " ![mq3-2_ipv4](https://github.com/xuan103/MQTT/blob/main/document/png/mq3-2_ipv4.png) >--- #### 建立 Subscriber - **終端機 1** - 訂閱 Try/MQTT 的主題 (主題名稱不包含空白) - mosquitto_sub -h [IP] -t [Topic] - IP 請更改為之前所建立的 AWS EC2 之 IP >$ mosquitto_sub -d -t Try/MQTT >> 要 Publisher 有發消息才有訊息顯示。 OR >$ mosquitto_sub -h 54.191.103.222 -t Try/MQTT >>會看到 Topic、Qos等...資訊 `-h : mqtt host to connect to. Defaults to localhost.` >--- - 建立 Publisher - **終端機 2** - 訂閱 Try/MQTT 的主題 (主題名稱不包含空白) - mosquitto_pub -h [IP] -t [Topic] -m [Message] - IP 請更改為之前所建立的 AWS EC2 之 IP >$ mosquitto_pub -d -t Try/MQTT -m "Try Message" OR >$ mosquitto_pub -d -h 54.191.103.222 -t Try/MQTT -m "Try Message" >--- ### 補充 - 功能: - mosquitto_sub : 訂閱 - mosquitto_pub : 發布 - `-d` : debug 模式 => debug - `-t` : 訂閱的主題 => topic - `-h` : Broker 的 IP => host - `-m` : 發送的內容 => message - `-v` : 顯示主題名稱 => verbosely - 更多指令內容可以查看: - mosquitto_sub --help - mosquitto_pub --help ###### tags: `MQTT` `Node-RED` `EC2` --- |[Back - Chapter 5](https://github.com/xuan103/MQTT/blob/main/document/AWS:%20EC2_For_Ubuntu_SSH.md)|[Contents](https://github.com/xuan103/MQTT/blob/main/README.md)| [Next - Chapter 7](https://github.com/xuan103/MQTT/blob/main/document/AWS:%20EC2_MQTTlens_MQTT.md) ---| ---| ---|