上传证书emqx.lic文件至emqx服务器/etc/emqx/目录
1.进入emqx目录cd /etc/emqx2.备份原文件mv emqx.lic emqx.lic.bak3.上传新证书到/etc/emqx目录4.加载证书 (emqx_ctl license reload 证书绝对路径)如图返回OK就说明替换成功加载证书: emqx_ctl license reload /etc/emqx/emqx.lic

备注:所有emqx服务器都全部需要替换
查看emqx集群状态:
emqx_ctl cluster statusCluster status: [{running_nodes,['emqx3@172.17.191.217', 'emqx2@172.17.191.216', 'emqx4@172.17.89.4', 'emqx1@172.17.191.215']}]EMQX 正常启动的状态:
emqx_ctl statusNode 'emqx@127.0.0.1' is startedemqx 4.0.0 is running
EMQX 启动emqx服务:
启动:systemctl start emqx 停止:systemctl stop emqx 重启:systemctl restart emqx
参考地址:https://docs.emqx.com/zh/enterprise/v4.4/getting-started/start.html#license
tcpdump网络抓包命令
抓取报文数量:tcpdump -i 网口 host 客户端IP port 端口 -vv -w a.pcap
抓包网络:tcpdump -i eth1 host 客户端IP port 端口 -nn -w a.pcap
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