centos7安装 mosquitto2

# 源码编译 cmake

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    yum -y install wget git gcc gcc-c++ openssl-devel
    wget https://github.com/Kitware/CMake/releases/download/v3.24.2/cmake-3.24.2.tar.gz
    

    tar zxvf cmake-3.24.2.tar.gz
    cd cmake-3.24.2

    ./bootstrap --prefix=/usr/local/cmake
    make && make install

    sudo ln -s /usr/local/cmake/bin/cmake /usr/bin/cmake

# 源码编译libwebsockets

高于v2.4.2 LWS_WITH_EXTERNAL_POLL默认关闭需要开启

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    git clone https://libwebsockets.org/repo/libwebsockets
    cd libwebsockets
    git checkout v4.3-stable
    mkdir build
    cd build
    cmake \
        -DLWS_WITH_EXTERNAL_POLL=ON \
        -DLWS_WITH_HTTP2=ON \
        -DLWS_WITHOUT_TESTAPPS=ON \
        -DLWS_UNIX_SOCK=ON \
        -DLWS_IPV6=ON \
        ../
    make && make install    

# 源码编译 mosquitto

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    ##下载 mosquitto
    wget https://mosquitto.org/files/source/mosquitto-2.0.15.tar.gz

    tar zxvf mosquitto-2.0.15.tar.gz
    cd mosquitto-2.0.15

    ##开启websocket
    vi config.mk
        WITH_WEBSOCKETS:=yes
    
    mkdir build
    cd build
    cmake \
    -DCMAKE_INSTALL_PREFIX=/usr/local \
    -DOPENSSL_ROOT_DIR=/usr/local \
    -DWITH_WEBSOCKETS=OFF \
    -DDOCUMENTATION=OFF \
    -DCMAKE_C_FLAGS="-I/usr/local/include" \
    -DCMAKE_EXE_LINKER_FLAGS="-L/usr/local/lib" \
    ../

    make WITH_WEBSOCKETS=yes && make install

    cp service/systemd/mosquitto.service.simple /usr/lib/systemd/system/mosquitto.service
    
    vi /usr/lib/systemd/system/mosquitto.service
            ExecStart=/usr/local/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
    
    mv /usr/local/etc/mosquitto /etc/mosquitto

    ## 添加mosquitto用户组合用户  或者修改配置文件 mosquitto.conf 将user mosquitto哪一行配置改成user root
    sudo groupadd mosquitto
    sudo useradd -g mosquitto mosquitto
    ## 配置文件mosquitto.conf
    listener 1883 0.0.0.0
    protocol mqtt

    listener 1884 0.0.0.0
    protocol websockets
    socket_domain ipv4

    ## 开机自启动
    systemctl enable mosquitto.service
    systemctl start mosquitto.service

    ## 开启防火墙端口
    firewall-cmd --zone=public --add-port=1883/tcp --permanent
    firewall-cmd --zone=public --add-port=1884/tcp --permanent
    firewall-cmd --reload