kubectl
can diff configuration (blog, docs).
On Linux, this works fine (WSL, Ubuntu 18, bash). It gives me sensible output similar to the following.
$ kubectl diff --filename some-resources.yaml
diff -u -N /tmp/LIVE-022965340/apps.v1.Deployment.… /tmp/MERGED-396067851/apps.v1.Deployment.…
--- /tmp/LIVE-022965340/apps.v1.Deployment.… 2020-07-20 17:06:21.444811700 +0200
+++ /tmp/MERGED-396067851/apps.v1.Deployment.… 2020-07-20 17:06:21.470315500 +0200
@@ -6,7 +6,7 @@
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"apps/v1",…
creationTimestamp: "2020-07-16T15:13:03Z"
- generation: 1
+ generation: 2
name: …
namespace: …
resourceVersion: "32827467"
@@ -121,7 +121,7 @@
- chown www-data:www-data /files/ -R;chmod -R 755 /files/; chmod -R g+ws /files/
command:
- /bin/bash
- - -c
+ - -cv
image: …
imagePullPolicy: IfNotPresent
name: init-sites-volume
On PowerShell, kubectl diff
fails (PowerShell 7, Windows 10).
PS > kubectl diff --filename some-resources.yaml
error: failed to run "diff": executable file not found in %PATH%
It seems that either kubectl
can't find an executable named diff
, or it trips up over diff
being an alias for Compare-Object
, which of course has very different syntax than Linux' diff
.
Is it possible to get kubectl diff
to work on PowerShell? If so, which diff-tool should I install and what should $env:KUBECTL_EXTERNAL_DIFF=…
be set to?