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DevOps-Bash-tools/kubectl_pod_count.sh

41 lines
1.2 KiB
Bash

#!/usr/bin/env bash
# vim:ts=4:sts=4:sw=4:et
#
# Author: Hari Sekhon
# Date: 2021-10-21 15:30:28 +0100 (Thu, 21 Oct 2021)
#
# https://github.com/HariSekhon/bash-tools
#
# License: see accompanying Hari Sekhon LICENSE file
#
# 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
#
# https://www.linkedin.com/in/HariSekhon
#
set -euo pipefail
[ -n "${DEBUG:-}" ] && set -x
srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck disable=SC1090
. "$srcdir/lib/utils.sh"
# shellcheck disable=SC2034,SC2154
usage_description="
Counts the total number of running pods on the current Kubernetes cluster in the current namespace
Specify the --namespace or use --all-namespaces to get the total across all namespaces, including the kube-system namespace
Requires kubectl to be in \$PATH and configured
"
# used by usage() in lib/utils.sh
# shellcheck disable=SC2034
usage_args="<--namespace blah | --all-namespaces>"
help_usage "$@"
kubectl get pods "$@" --field-selector status.phase=Running -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}' |
wc -l |
sed 's/[[:space:]]*//'