kubepfm

README

Overview

kubepfm is a simple wrapper to kubectl port-forward command for multiple pods/deployments/services. It can start multiple kubectl port-forward processes based on the number of input targets. Terminating the tool (Ctrl-C) will also terminate all running kubectl sub-processes.

Installation

Using Homebrew:

$ brew tap flowerinthenight/tap
$ brew install kubepfm

If you have a Go environment:

$ go get -u -v github.com/flowerinthenight/kubepfm

Usage

$ kubepfm --target [namespace:]name-or-pattern:local-port:remote-port [--target ...]

If the [namespace:] part is not specified, the default namespace is used.

This tool uses regexp.FindAllString to resolve the input pattern. If your pattern includes : in it (i.e. [[:alpha:]]), then you need to include the namespace part, as this tool uses the : character as its input separator.

# Simple pattern, namespace not needed
$ kubepfm --target mypod:8080:1222

# Pattern with a `:` in it, namespace is required
$ kubepfm --target "default:mypo[[:alpha:]]:8080:1222"

By default, this tool will port-forward to pods. If you want to forward to deployments or services, you can prefix the name/pattern with the resource type.

# Using deployment
$ kubepfm --target deployment/dep1:8080:8080

# Using services
$ kubepfm --target service/svc1:8080:8080 --target service/svc2:8081:80

Finally, the .* string is appended to the input name/pattern before it is resolved.

Examples

View our running pods:

$ kubectl get pod
NAME                                 READY     STATUS      RESTARTS   AGE
mypod-7c497c9d94-8xls2               1/1       Running     0          7d
otherpod-5987f84db4-9mhxf            1/1       Running     0          4d
hispod-7d8c4cbd9-dqjc6               1/1       Running     0          21d
herpod-7d48964997-d6pgs              1/1       Running     0          3d
...

Do a port-forward to two pods using port 1222 to our local 8080 and 8081 ports:

$ kubepfm --target mypod:8080:1222 --target otherpod:8081:1222
[kubectl port-forward -n default pod/mypod-xxx 8080:1222] Forwarding from 127.0.0.1:8080 -> 1222
[kubectl port-forward -n default pod/mypod-xxx 8080:1222] Forwarding from [::1]:8080 -> 1222
[kubectl port-forward -n default pod/otherpod-xxx 8081:1222] Forwarding from 127.0.0.1:8081 -> 1222
[kubectl port-forward -n default pod/otherpod-xxx 8081:1222] Forwarding from [::1]:8081 -> 1222

Both pods are now accessible from localhost:

localhost:8080 --> mypod
localhost:8081 --> otherpod