Kubectl exec ..-/ bin / bash无法连接

Question

最近，我无法连接到kubernetes集群上的bash。我不知道为什么。其他人有没有经历过？

发生了什么：我再也无法在运行的Pod中连接到/ bin / bash。尝试执行命令时，它只是挂起。我已验证已安装bash（/bin/bash --version）。我已经在本地和Google Cloud Console中尝试过

您预期会发生什么：我的本地终端成功连接到pods bash终端

如何（尽可能最小且精确地）再现它：我仅在集群上对其进行了测试，但是我正在运行的命令是：

kubectl exec -i POD_ID --namespace=NAMESPACE -c CONTAINER -- /bin/bash

我还用DEBUG = 1运行了它，结果如下：

DEBUG=1 kubectl exec -i POD_ID --namespace=NAMESPACE -c CONTAINER -- 
/bin/bash
I0412 10:52:14.560443    2675 logs.go:41] (0xc4200aed10) 
(0xc420242140) Create stream
I0412 10:52:14.560486    2675 logs.go:41] (0xc4200aed10) 
(0xc420242140) Stream added, broadcasting: 1
I0412 10:52:14.611561    2675 logs.go:41] (0xc4200aed10) Reply frame 
received for 1
I0412 10:52:14.611658    2675 logs.go:41] (0xc4200aed10) 
(0xc4203e26e0) Create stream
I0412 10:52:14.611692    2675 logs.go:41] (0xc4200aed10) 
(0xc4203e26e0) Stream added, broadcasting: 3
I0412 10:52:14.656684    2675 logs.go:41] (0xc4200aed10) Reply frame 
received for 3
I0412 10:52:14.656725    2675 logs.go:41] (0xc4200aed10) 
(0xc4202425a0) Create stream
I0412 10:52:14.656737    2675 logs.go:41] (0xc4200aed10) 
(0xc4202425a0) Stream added, broadcasting: 5
I0412 10:52:14.702100    2675 logs.go:41] (0xc4200aed10) Reply frame 
received for 5
I0412 10:52:14.702140    2675 logs.go:41] (0xc4200aed10) 
(0xc420659680) Create stream
I0412 10:52:14.702151    2675 logs.go:41] (0xc4200aed10) 
(0xc420659680) Stream added, broadcasting: 7
I0412 10:52:14.746707    2675 logs.go:41] (0xc4200aed10) Reply frame 
received for 7

我们还有什么需要知道的吗？：

环境：-Kubernetes版本

Client Version: version.Info{Major:"1", Minor:"8", 
GitVersion:"v1.8.6", 
GitCommit:"6260bb08c46c31eea6cb538b34a9ceb3e406689c", 
GitTreeState:"clean", BuildDate:"2017-12-21T06:34:11Z", 
GoVersion:"go1.8.3", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"9+", 
GitVersion:"v1.9.6-gke.0", 
GitCommit:"cb151369f60073317da686a6ce7de36abe2bda8d", 
GitTreeState:"clean", BuildDate:"2018-03-21T19:01:20Z", 
GoVersion:"go1.9.3b4", Compiler:"gc", Platform:"linux/amd64"}

• 云提供商或硬件配置： Google Cloud

• 操作系统（例如，来自/etc/os-release）：

  PRETTY_NAME =“ Debian GNU / Linux 9（stretch）” NAME =“ Debian GNU / Linux” VERSION_ID =“ 9” VERSION =“ 9（stretch）” ID = debian HOME_URL =“ https://www.debian.org/” SUPPORT_URL =“ https://www.debian.org/support” BUG_REPORT_URL =“ https://bugs.debian.org/”

• 内核（例如uname -a）： Linux bounce-deployment-f95687cbc-mfgtg 4.4.111+ #1 SMP Thu Feb 1 22:06:37 PST 2018 x86_64 GNU/Linux

• 安装工具：
• 其他：

Answer 1

你必须传递-t到kubectl exec命令，就像docker exec -i -t <container_name> bash。

从帮助命令：

-t，--tty = false：Stdin是TTY