我正在尝试使用knife ssh以下方式在多个节点上运行 shell 命令：
knife ssh -V "role:web" --ssh-gateway ec2-user@aws_ssh_gateway \
--ssh-user ubuntu \
"sudo chef-client"
当我所有角色为“web”的实例都启动时，它工作正常，但是当我只删除一个实例时，此命令会挂起此消息：
WARNING: Failed to connect to -- Net::SSH::Disconnect: connection closed by remote host
有没有办法告诉刀跳过无法访问的节点并继续那些已启动的节点？
更新：默认情况下，Knife 应该跳过无法访问的节点，但这不会发生。可能的原因是 SSH 网关。调查。
我在测试我设置的PostgreSQL 9.4集群的故障转移时偶然发现了这个错误.在这里,我正在努力推动奴隶成为新的主人:
$ repmgr -f /etc/repmgr/repmgr.conf --verbose standby promote
2014-09-22 10:46:37 UTC LOG: database system shutdown was interrupted; last known up at 2014-09-22 10:44:02 UTC
2014-09-22 10:46:37 UTC LOG: database system was not properly shut down; automatic recovery in progress
2014-09-22 10:46:37 UTC LOG: redo starts at 0/18000028
2014-09-22 10:46:37 UTC LOG: consistent recovery state reached at 0/19000600
2014-09-22 10:46:37 UTC LOG: record with zero length at 0/1A000090
2014-09-22 10:46:37 UTC LOG: redo done at 0/1A000028
2014-09-22 10:46:37 UTC LOG: …