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Kubernetes pod deployment status polling script for ci-pipelines
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#!/bin/bash | |
# ############################################################################# | |
# | |
# Helper script used to poll one or more pods for their running status. | |
# | |
# ############################################################################# | |
DEFAULT_POLL_MAX_COUNT=20 | |
DEFAULT_POLL_SLEEP_IN_SECONDS=5 | |
function usage(){ | |
echo "Poll for the running status of one or more pods." | |
echo "usage: $0 -c kubernetes context file -n name space -s service name [-h]" | |
} | |
function error { | |
echo -e "$1" >&2 | |
exit 1 | |
} | |
while [[ "$#" -gt 0 ]]; do case $1 in | |
-c|--config-file) config_file="$2"; shift;; | |
-n|--namespace) namespace="$2"; shift;; | |
-s|--service-name) service_name="$2"; shift;; | |
-h|--help) usage; exit 0;; | |
*) error "Unknown parameter passed: $1";; | |
esac; shift; done | |
[[ -z "$config_file" ]] && error "Config file for Kubernetes cluster not set, aborting!" | |
[[ -z "$service_name" ]] && error "Service name not set, aborting!" | |
[[ -z "$namespace" ]] && namespace="default" && echo "Target namespace not set, will use [default]!" | |
command_get_pods="kubectl get pods --namespace $namespace --kubeconfig $config_file | grep \"$service_name\"" | |
command_notready_count="$command_get_pods | grep \"0/\" | wc -l" | |
command_crashed="$command_get_pods | grep \"Crash\"" | |
command_crashed_count="$command_crashed | wc -l" | |
notready=$(eval $command_notready_count) | |
crashed=$(eval $command_crashed_count) | |
iteration=0 | |
while (( $notready > 0 )) && (( $iteration < $DEFAULT_POLL_MAX_COUNT )); do | |
echo "#Pods not ready: $notready / Crashed: $crashed" | |
eval $command_crashed | |
sleep $DEFAULT_POLL_SLEEP_IN_SECONDS | |
notready=$(eval $command_notready_count) | |
crashed=$(eval $command_crashed_count) | |
iteration=$(( iteration + 1 )) | |
done | |
echo "#Pods not ready: $notready / Crashed: $crashed" | |
if (( $notready > 0 )); then | |
echo "Timeout while waiting for pod(s)" | |
eval $command_crashed | |
exit -1 | |
else | |
eval $command_get_pods | |
echo "All pods are ready, have fun!" | |
fi |
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