ssh连接很慢故障处理

原創 stSahana 2020-04-20 18:41

由于系统调整关闭了集群的kerberos服务，之后使用ssh连接目标机器时出现了连接时间过长的问题。
执行命令 ssh -v node2a1
查看到

Cannot contact any KDC for realm 'JS.HADOOP.COM'

原因是无法解析KDC realm
修复办法是

vim /etc/ssh/ssh_conf

修改以下两个配置项

GSSAPIAuthentication no
UseDNS no
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