ssh連接很慢故障處理

原創 stSahana 2020-04-20 18:41

由於系統調整關閉了集羣的kerberos服務，之後使用ssh連接目標機器時出現了連接時間過長的問題。
執行命令 ssh -v node2a1
查看到

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

原因是無法解析KDC realm
修復辦法是

vim /etc/ssh/ssh_conf

修改以下兩個配置項

GSSAPIAuthentication no
UseDNS no
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