GBase 8a在进行扩容操作时，会检查所有节点的状态，如果节点离线(OFFLINE)，因无法登录，会有Check login 类错误，无法进行扩容操作。
目录导航
环境
2节点集群，其中1个节点出现不可恢复故障，已经离线。 网络也ping不通了。
[gbase@localhost gcinstall]$ gcadmin
CLUSTER STATE: ACTIVE
CLUSTER MODE: NORMAL
=================================================================
| GBASE COORDINATOR CLUSTER INFORMATION |
=================================================================
| NodeName | IpAddress |gcware |gcluster |DataState |
-----------------------------------------------------------------
| coordinator1 | 10.0.2.201 | OPEN | OPEN | 0 |
-----------------------------------------------------------------
====================================================================
| GBASE DATA CLUSTER INFORMATION |
====================================================================
|NodeName | IpAddress | gnode |syncserver |DataState |
--------------------------------------------------------------------
| node1 | 10.0.2.201 | OPEN | OPEN | 0 |
--------------------------------------------------------------------
| node2 | 10.0.2.202 | OFFLINE | |
--------------------------------------------------------------------
[gbase@localhost gcinstall]$
[gbase@localhost gcinstall_8624335.5p4]$ ping 10.0.2.202
PING 10.0.2.202 (10.0.2.202) 56(84) bytes of data.
From 10.0.2.201 icmp_seq=4 Destination Host Unreachable
From 10.0.2.201 icmp_seq=5 Destination Host Unreachable
From 10.0.2.201 icmp_seq=6 Destination Host Unreachable
From 10.0.2.201 icmp_seq=7 Destination Host Unreachable
^C
--- 10.0.2.202 ping statistics ---
8 packets transmitted, 0 received, +4 errors, 100% packet loss, time 7545ms
pipe 4
[gbase@localhost gcinstall_8624335.5p4报错样例
Check loginUser:root password failed,nodes are:10.0.2.202以及
Check root password failed,nodes are:10.0.2.202看后台日志 gcinstall.log
fail to login root@10.0.2.202,err:ssh: connect to host 10.0.2.202 port 22: No route to host解决方案
先恢复故障节点的操作系统，确保IP能连通。
如果确实节点无法修复，可以联系GBase 8a支持人员，临时调整代码，去掉对故障节点无法登录的检测，强行做扩容操作。