ssh登录缓慢问题

ssh登录缓慢,差不多半分钟才登录成功,故对其进行追踪检查

①ssh ip -vvv 或 ssh ip -v
用于检查ssh在哪个位置用时最长
然后发现在Entering interactive session 语句后等待时间最长,超过20秒,说明非ssh登录时密 码验证的问题

②这样看不出啥问题,故使用starce进行追踪

starce -o ~/starce_ssh.txt -T ssh ip
cat ~/starce_ssh.txt 发现:
clock_gettime(0x7 /* CLOCK_??? */, {5243451, 134078578}) = 0 <0.000026>

然而看不懂这个地方,悲催

③故尝试查看所登录的服务器的messages日志,竟然有重大发现
dbus[7782]: [system] Failed to activate service ‘org.freedesktop.login1’: timed out
dbus-daemon: dbus[7782]: [system] Failed to activate service ‘org.freedesktop.login1’: timed out
显示这个服务超时了,网上查找资料,大意如下:
dbus的服务重启后,systemd-logind服务没有重启导致,可以查看systemctl status systemd-logind的状态,解决方法就是重启该服务
systemctl restart systemd-logind

posted @ 2020-08-08 21:27  Chuan_Chen  阅读(458)  评论(0编辑  收藏  举报
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