SSH登录Ubuntu速度缓慢/usr/bin/xauth: timeout in locking authority file /home/book/.Xauthority

现象ssh登录Ubuntu时，速度很慢，输出信息如下：┌────────────────────────────────────────────────────────────────────┐│• MobaXterm 20.3 •││(SSH client, X-server and networking tools)│

晴空万里Linux

4175人浏览 · 2020-11-05 10:06:42

晴空万里Linux · 2020-11-05 10:06:42 发布

现象

ssh登录Ubuntu时，速度很慢，输出信息如下：

     ┌────────────────────────────────────────────────────────────────────┐
     │                        • MobaXterm 20.3 •                          │
     │            (SSH client, X-server and networking tools)             │
     │                                                                    │
     │ ➤ SSH session to book@192.168.8.191                               │
     │   • SSH compression : ✔                                            │
     │   • SSH-browser     : ✔                                            │
     │   • X11-forwarding  : ✔  (remote display is forwarded through SSH) │
     │   • DISPLAY         : ✔  (automatically set on remote server)      │
     │                                                                    │
     │ ➤ For more info, ctrl+click on help or visit our website          │
     └────────────────────────────────────────────────────────────────────┘

Welcome to Ubuntu 18.04.2 LTS (GNU/Linux 5.4.0-52-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

 * Introducing self-healing high availability clustering for MicroK8s!
   Super simple, hardened and opinionated Kubernetes for production.

     https://microk8s.io/high-availability

 * Canonical Livepatch is available for installation.
   - Reduce system reboots and improve kernel security. Activate at:
     https://ubuntu.com/livepatch

219 packages can be updated.
15 updates are security updates.

New release '20.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Your Hardware Enablement Stack (HWE) is supported until April 2023.
Last login: Wed Nov  4 20:51:41 2020 from 192.168.8.116
/usr/bin/xauth:  timeout in locking authority file /home/book/.Xauthority
book@100ask:~$

可以看到出错信息为：

/usr/bin/xauth:  timeout in locking authority file /home/book/.Xauthority

解决方案

查看当前用户读写权限：
（备注，此处用户是book）

book@100ask:~$ cd ..
book@100ask:/home$ ll
total 36
drwxr-xr-x  6 root   root    4096 Nov  3 20:37 ./
drwxr-xr-x 26 root   root    4096 Nov  3 20:30 ../
dr-xr-xr-x 39 book   book    4096 Oct 29 04:05 book/
drwxr-xr-x 24 gerrit gerrit  4096 Nov  4 04:34 gerrit/
drwx------  2 root   root   16384 Feb 20  2019 lost+found/
drwxr-xr-x 20 nano   nano    4096 Nov  4 20:48 nano/
book@100ask:/home$

我的Ubuntu有三个用户，分别为 book 、gerrit、nano
从上图结果可以看出，book文件夹缺少写w权限

解决方案：

book@100ask:/home$ sudo chmod 755 book/
book@100ask:/home$ ll
total 36
drwxr-xr-x  6 root   root    4096 Nov  3 20:37 ./
drwxr-xr-x 26 root   root    4096 Nov  3 20:30 ../
drwxr-xr-x 39 book   book    4096 Oct 29 04:05 book/
drwxr-xr-x 24 gerrit gerrit  4096 Nov  4 04:34 gerrit/
drwx------  2 root   root   16384 Feb 20  2019 lost+found/
drwxr-xr-x 20 nano   nano    4096 Nov  4 20:48 nano/
book@100ask:/home$

再次ssh登录到book用户，报错消失，也不会卡顿：

     ┌────────────────────────────────────────────────────────────────────┐
     │                        • MobaXterm 20.3 •                          │
     │            (SSH client, X-server and networking tools)             │
     │                                                                    │
     │ ➤ SSH session to book@192.168.8.191                               │
     │   • SSH compression : ✔                                            │
     │   • SSH-browser     : ✔                                            │
     │   • X11-forwarding  : ✔  (remote display is forwarded through SSH) │
     │   • DISPLAY         : ✔  (automatically set on remote server)      │
     │                                                                    │
     │ ➤ For more info, ctrl+click on help or visit our website          │
     └────────────────────────────────────────────────────────────────────┘

Welcome to Ubuntu 18.04.2 LTS (GNU/Linux 5.4.0-52-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

 * Introducing self-healing high availability clustering for MicroK8s!
   Super simple, hardened and opinionated Kubernetes for production.

     https://microk8s.io/high-availability

 * Canonical Livepatch is available for installation.
   - Reduce system reboots and improve kernel security. Activate at:
     https://ubuntu.com/livepatch

219 packages can be updated.
15 updates are security updates.

New release '20.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

Your Hardware Enablement Stack (HWE) is supported until April 2023.
Last login: Wed Nov  4 20:55:15 2020 from 192.168.8.116
book@100ask:~$
book@100ask:~$