centos7 docker swarm加入集群失败

提示的错误为
[root@localhost downloads]# docker swarm join --token SWMTKN-1-2ezr0k5ybds1la4vgi2z7j8ykxkmm0bd07jr00x534b299ip0p-3cbnr4zqwmpj8oj26388rr346 192.168.3.66:2377 Error response from daemon: rpc error: code = Unavailable desc = grpc: the connection is unavailabledocker

使用ping测试,能够互相通信,怀疑是防火墙问题。测试

使用下面命令查看防火墙状态code

[root@localhost downloads]# firewall-cmd --state runningtoken

尝试关闭防火墙ip

systemctl stop firewalld.servicerpc

再次尝试,OK,问题解决cmd

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