> For the complete documentation index, see [llms.txt](https://huataihuang.gitbook.io/cloud-atlas-draft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://huataihuang.gitbook.io/cloud-atlas-draft/service/ssh/ssh_pty_allocation_request_faile_on_channel_0.md).

# ssh登陆报错"PTY allocation request failed on channel 0"

遇到ssh登陆服务器报错:

```
PTY allocation request failed on channel 0
```

然后卡在这里不返回本地终端。

但是，非常奇怪的是，同样的主机，使用 `pgm` 命令（也就是pssh的改版) 却能够正常显示输出

```
#pgm -bf em14-gray_pouch_ip "uptime"
[1] 19:32:03 [SUCCESS] 11.189.100.52
 19:32:02 up 247 days, 19:24,  0 users,  load average: 1.67, 1.71, 1.41

[2] 19:32:03 [SUCCESS] 11.144.93.216
 19:32:02 up 360 days,  2:53,  0 users,  load average: 2.17, 2.48, 2.63
```

我怀疑和客户端的环境有关，因为客户端在docker容器中运行。