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ypresto/k8s-port-forward.sh

Last active February 2, 2022 06:53
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Port forward to somewhere only accessible from Kubernetes cluster
Raw
k8s-port-forward.sh
#!/bin/sh -ex
# $1: host
# $2: port
# $3: local port (defaults to $2)
pod_name=bastion-$USER
# extend timeout for fargate env
( sleep 3 && kubectl wait --for=condition=ready --timeout=1m0s pod/$pod_name && echo Start port forwarding && kubectl port-forward pod/$pod_name ${3:-$2}:$2 ) &
kubectl run $pod_name --rm -i --tty --image alpine --pod-running-timeout=1m0s -- sh -c "apk add socat && socat tcp-listen:$2,reuseaddr,fork tcp-connect:$1:$2"
kill -INT $! # kill last background job
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