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HA-cluster

actually i have issue when i tried to add new node in cluster i faced the below issue during starting the nodes one of old give me error 

Error: unable to start all nodes
nodeb.example.com: Error connecting to nodeb.example.com - (HTTP error: 400)

and when try to make auth from node a to nodeb  i faced the below error 

pcs host auth nodeb.example.com
Username: hacluster
Password:
nodeb.example.com: Authorized

 

and in pcs status 

* Node nodeb.example.com: UNCLEAN (offline)
* Online: [ nodea.example.com nodec.example.com ]

and after checking /var/log/messages on nodeb give the below error 

Jul 11 06:53:26 nodeb corosync[6401]: [MAIN ] Corosync Cluster Engine 3.1.5 starting up
Jul 11 06:53:26 nodeb corosync[6401]: [MAIN ] Corosync built-in features: dbus systemd xmlconf vqsim nozzle snmp pie relro bindn ow
Jul 11 06:53:27 nodeb corosync[6401]: [MAIN ] failed to parse node address 'nodec.example.com'
Jul 11 06:53:27 nodeb corosync[6401]: [MAIN ] Corosync Cluster Engine exiting with status 8 at main.c:1417.
Jul 11 06:53:27 nodeb systemd[1]: corosync.service: Main process exited, code=exited, status=8/n/a
Jul 11 06:53:27 nodeb systemd[1]: corosync.service: Failed with result 'exit-code'.
Jul 11 06:53:27 nodeb systemd[1]: Failed to start Corosync Cluster Engine.

so i wanna what must 

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S_Poulimenos
Cadet
Cadet
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Maybe there is a local node resolving to a different IP internally. When that happens, commands return HTTP code 400. Please check your IP address/hostname to all the nodes to be sure and you might use the following command:
host nodeb.example.com

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