On 9/30/20 7:47 AM, MJ wrote: > I've installed ansible in CentOS6.5, then added host group *bocai_ecs_all* in > /etc/ansible/ansible.cfg. > [bocai_ecs_all] > bocaiserver1 > bocaiserver2 (centos7.6) > bocaiserver3 > bocaiserver4 (centos7.6) > bocaiserver5 > And then run the following command in shell, some machines took very long > time about 60 seconds. I found those slow > machines are all installed CentOS7.6. > *ansible bocai_ecs_all -m ping* > > what will be the cause?
Check the DNS setup on the affected machine. It is possible that they try a
reverse lookup on the IP you connect from,
but can not reach the configured DNS server.
That could be the cause.
Regards
Racke
>
> Thanks in advance!
>
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