Krew install script can fail

[GregDThomas]

If your /tmp folder is set to noexec - a usual configuration - then the script presented at https://krew.sigs.k8s.io/docs/user-guide/setup/install/ will fail with

-bash: ./krew-linux_amd64: Permission denied

(The only workaround I can think of is to create a temporary folder somewhere other than /tmp)

[kundan2707]

@GregDThomas
it is already setting permission in start.

set -x; cd "$(mktemp -d)" &&

[kundan2707]

/kind support

[GregDThomas]

@GregDThomas it is already setting permission in start.

set -x; cd "$(mktemp -d)" &&

This doesn't work if /tmp is set to noexec.

[ahmetb]

I don't know how does someone's /tmp have noexec. How frequent is this setup? I'm trying to understand if this is worth addressing.

[GregDThomas]

A quote from https://serverfault.com/questions/72356/how-useful-is-mounting-tmp-noexec

Many people (including the Securing Debian Manual) recommend mounting /tmp with the noexec,nodev,nosuid set of options.

[GregDThomas]

FWIW, it may be sufficient to do something like;

TMPDIR=~/.tmp (
  set -x; cd "$(mktemp -d)" &&
...
)

to use another folder that isn't noexec.