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56 lines
2.0 KiB
Bash
56 lines
2.0 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2020-08-25 15:54:23 +0100 (Tue, 25 Aug 2020)
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#
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# https://github.com/HariSekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Generates kubectl credentials and contexts for all GKE clusters in the current or given GCP project
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This is fast way to get set up in new environments, or even just add any new GKE clusters to your existing \$HOME/.kube/config
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WARNING: GCloud SDK switches your kubectl context to the last cluster you get credentials for. This can lead to race conditions between other kubectl scripts if they have not forked and isolated their \$KUBECONFIG. Do not run this while other naive kubectl commands and scripts are running otherwise those non-isolated commands may fire against the wrong kubernetes cluster. See kubectl.sh for more info
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See also:
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kubectl.sh - isolates kube config to fix kubectl commands to the given cluster to prevent race conditions applying kubectl changes to the wrong cluster
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gke_kubectl.sh - same as above but also gets the credential
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aws_kube_creds.sh - same as this script but for AWS EKS
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<project_id>]"
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help_usage "$@"
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project_id="${1:-}"
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if [ -n "${project_id:-}" ]; then
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export CLOUDSDK_CORE_PROJECT="$project_id"
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fi
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gcloud container clusters list --format='value(name,zone)' |
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while read -r cluster zone; do
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echo "Getting GKE credentials for cluster '$cluster' in zone '$zone':"
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gcloud container clusters get-credentials "$cluster" --zone "$zone"
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echo
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done
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