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75 lines
2.2 KiB
Bash
75 lines
2.2 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: 2021-04-16 17:44:30 +0100 (Fri, 16 Apr 2021)
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#
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# https://github.com/HariSekhon/DevOps-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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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Lists all Kubernetes nodes in a given GKE cluster's nodepool
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- finds instance groups in a node pool
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- finds nodes in each instance group
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Requires:
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- GCloud SDK to be installed and configured
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- requires core/project and compute/region to be set in your gcloud config
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or else environment variables CLOUDSDK_CORE_PROJECT and CLOUDSDK_COMPUTE_REGION
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If gcloud config container/cluster or CLOUDSDK_CONTAINER_CLUSTER are set then you don't have to specify the cluster name
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<cluster_name>] <node_pool_name>"
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help_usage "$@"
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min_args 1 "$@"
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if [ $# -eq 2 ]; then
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export GCLOUD_CONTAINER_CLUSTER="$1"
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node_pool="$2"
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elif [ $# -eq 1 ]; then
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node_pool="$1"
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else
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usage
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fi
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if [ -n "${VERBOSE:-}" ]; then
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timestamp "finding instance groups in node pool '$node_pool'"
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fi
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instance_groups="$(
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gcloud container node-pools describe "$node_pool" --format=json |
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jq -r '.instanceGroupUrls[] | sub("^.*/"; "")'
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)"
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if [ -n "${VERBOSE:-}" ]; then
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echo >&2
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fi
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for instance_group in $instance_groups; do
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if [ -n "${VERBOSE:-}" ]; then
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#timestamp "finding zone of instance group '$instance_group'"
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timestamp "finding nodes in instance group '$instance_group'"
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fi
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zone="$(gcloud compute instance-groups list --filter="name=$instance_group" --format='get(zone)' | sed 's|^.*/||')"
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gcloud compute instance-groups list-instances "$instance_group" --zone "$zone" --format='value(NAME)' # doesn't find it without zone, and NAME must be capitalized too
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done
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