Website: Installation of kubectl fails when using zsh

[psankar]

This is a...

• [ ] Feature Request
• [x] Bug Report

Problem:
I tried to install kubectl on a Mac OS machine and it fails. I followed the documentation at: https://kubernetes.io/docs/user-guide/prereqs/ and https://kubernetes.io/docs/tutorials/stateless-application/hello-minikube/ and gave a command. The command and the response are below:

➜  Downloads curl -LO https://storage.googleapis.com/kubernetes-release/release/$\(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt\)/bin/darwin/amd64/kubectl
<?xml version='1.0' encoding='UTF-8'?><Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message></Error>%                                                                            
➜  Downloads

Proposed Solution:
Fix the documentation or the url

Page to Update:
https://kubernetes.io/docs/user-guide/prereqs/
https://kubernetes.io/docs/tutorials/stateless-application/hello-minikube/

[ixdy]

@psankar Did you add the backslashes before ( and ) when you copied the command? I don't see those in the docs, but that's probably why it did not work for you.

This command should work:

curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/darwin/amd64/kubectl

This will not, because the backslashes will cause the shell not to interpret the inner curl as a command:

curl -LO https://storage.googleapis.com/kubernetes-release/release/$\(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt\)/bin/darwin/amd64/kubectl

[psankar]

@ixdy ah yes. The backslashes are automatically inserted by zsh when I pasted the link. I think that this issue can be closed. But considering that many people may be using zsh, can a NOTE be added for this in the docs ?

[alaam]

I agree with @psankar. I just ran into the same problem on zsh as well

[kawikadkekahuna]

Was there any solution to this problem? Currently running into a similar problem:

<?xml version='1.0' encoding='UTF-8'?><Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message></Error>%

[ixdy]

This sounds like a bug in zsh, possibly https://github.com/zsh-users/zsh-autosuggestions/issues/102.

[kawikadkekahuna]

@ixdy Thanks for the quick response. Running the command using bash resolved the issue.

Seems like zsh doesnt play nice after the second curl request. Running https://storage.googleapis.com/kubernetes-release/release/v1.5.4/bin/linux/amd64/kubectl should work as well.

[ixdy]

@kawikadkekahuna what was the full command-line you used in zsh? In the OP it was clearly a zsh bug, since zsh auto-inserted backslashes where it shouldn't be.

[allan-fan]

There is a direct link to download the kubectl.exe file:
http://storage.googleapis.com/kubernetes-release/release/v1.5.3/bin/windows/amd64/kubectl.exe
More information can be found:
https://console.ng.bluemix.net/docs/containers/cs_cli_install.html#cs_cli_install

[zoidbergwill]

Wouldn't it still be best practise to double quote commands that use command substitution and change it from:

curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/darwin/amd64/kubectl

to

curl -LO "https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/darwin/amd64/kubectl"

Google shell styleguide: Quoting

[ericfreese]

Maintainer of zsh-users/zsh-autosuggestions here. This likely had to do with zsh "bracketed-paste-magic" functionality, which Oh My Zsh enables by default.

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[chaabraham]

/remove-lifecycle stale

[chaabraham]

getting this issue after trying without the slashes before ( & ):

➜ ~ curl -LO https://storage.googleapis.com/kubernetes-release/release/v10.13.3/bin/darwin/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/

% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 127 100 127 0 0 569 0 --:--:-- --:--:-- --:--:-- 569
Password:
➜ ~ kubectl cluster-info
/usr/local/bin/kubectl: line 1: syntax error near unexpected token <' /usr/local/bin/kubectl: line 1:NoSuchKeyThe specified key does not exist.'
➜ ~ kubectl
/usr/local/bin/kubectl: line 1: syntax error near unexpected token <' /usr/local/bin/kubectl: line 1:NoSuchKeyThe specified key does not exist.'
➜ ~

[ixdy]

The version in the URL should match a kubernetes release, not the version of macOS you're using. Try something like v1.9.4 instead of v10.13.3 (which doesn't exist).