"kubectl修补程序"在Linux Bash上有效，但在Windows Powershell ISE中不可用 [英] 'kubectl patch' works on Linux Bash but not in Windows Powershell ISE
问题描述
以下命令在Ubuntu bash上运行良好:
The following command works fine on Ubuntu bash:
kubectl patch deployment wapi-backend-d1 --patch '{"spec": {"template": {"metadata": {"labels": {"date": "test"}}}}}'
同一命令在Windows Powershell控制台(ISE)中不起作用.
The same command does not work in Windows Powershell Console (ISE).
错误是:
kubectl : Error from server (BadRequest): invalid character 's' looking for beginning of object key string
At line:1 char:1
+ kubectl patch deployment wapi-backend-d1 --patch '{"spec": {"template ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (Error from serv...ject key string:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
powershell控制台版本为:
The powershell console version is:
PS > $PSVersionTable
Name Value
---- -----
PSVersion 5.1.14409.1005
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.14409.1005
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
我也尝试过使用具有不同补丁值的命令，因为我看到有人写道，如果补丁已经应用，它可能会失败.
I have tried the command with a different patched value too as I saw somebody write that patch may fail if it is already applied.
/spec/template/metadata/labels/date路径确实存在于部署的Yaml中，因此也不是问题.
The path /spec/template/metadata/labels/date indeed exists in the deployment's yaml, so that isn't a problem either.
我认为这可能与kubectl在Powershell中相对于引号的工作方式有所不同，但找不到找到使之工作的方法.
I presume that it might have something to do with kubectl working differently in Powershell in relation to quotes, but could not find a way to make it work.
我尝试过
kubectl patch deployment wapi-backend-d1 --patch "{\"spec\": {\"template\": {\"metadata\": {\"labels\": {\"date\": \"test123\"}}}}}"
但这会导致
Error from server (NotFound): deployments.extensions "spec\\: {\\template\\: {\\metadata\\: {\\labels\\: {\\date\\: \\test123\\}}}}}" not found
Powershell上的命令应该是什么?
What should be the command on Powershell?
推荐答案
有关详细且非常有用的背景，请参阅 answer by mklement0
For detailed and very useful background, see the answer by mklement0
经过无奈之后，我决定列出我尝试过的所有引号转义变体，然后又提出了一个变体，突然间奏效了！ 因此，在这里分享它:
After much frustration, I have decided to list all variants of quote escaping that I've tried, and came up with one more, which suddenly worked! So, sharing it here:
kubectl patch deployment wapi-backend-d1 --patch '{\"spec\": {\"template\": {\"metadata\": {\"labels\": {\"date\": \"test123\"}}}}}'
这是如何在Powershell中使用kubectl补丁
This is how to use kubectl patch with Powershell
另外，值得注意的是:我实际上是在尝试用时间戳对其打补丁，以触发滚动更新，而无需更改容器图像的标签(因此设置图像对我没有帮助).
Also, of note: I was actually trying to patch it with a timestamp to trigger a rolling update without changing tags of container images (so set image would not help me).
当您尝试将JSON放入变量中，然后使用变量调用kubectl补丁时，您会再次遇到转义的麻烦.这就是我最终得到的:
When you try to put your JSON into a variable and then call kubectl patch with a variable, you get into trouble with escaping again. This is what I ended up with:
$patchRequest = @{
spec = @{
template = @{
metadata = @{
labels = @{
date = ((((Get-Date -Format o)).replace(':','-').replace('+','_')))
}
}
}
}
}
$patchJson = ((ConvertTo-Json -InputObject $patchRequest -Compress -Depth 10))
$patchJson = $patchJson.replace('"','\"')
kubectl patch deployment wapi-backend-d1 --patch $patchJson
这篇关于"kubectl修补程序"在Linux Bash上有效，但在Windows Powershell ISE中不可用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
