Created
September 13, 2023 17:17
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replicaset-age.sh
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#!/usr/bin/env bash | |
set -eou pipefail | |
DATE="date" | |
if command -v gdate &> /dev/null | |
then | |
DATE="gdate" | |
fi | |
# which "$DATE" | |
deployments=$(kubectl get deployments --all-namespaces --no-headers -o=wide) | |
current_date=$($DATE -u +%s) | |
data="" | |
while IFS= read -r deployment; do | |
ns=$(echo "$deployment" | awk '{ print $1 }') | |
name=$(echo "$deployment" | awk '{ print $2 }') | |
# printf "%-63s %-63s" "$ns" "$name" | |
data+="$ns,$name" | |
selectorLabels=$(kubectl get -n "$ns" deployment.apps/"$name" -o=json | jq -r '.spec.selector.matchLabels | to_entries | map("\(.key)%3D\(.value)") | join("%2C")') | |
selectorLabels="${selectorLabels//\\/%2F}" | |
# selectorLabelsJoined=$(join_by '%2C' "${selectorLabels[@]}") | |
kube_date=$(kubectl get --raw "/apis/apps/v1/namespaces/${ns}/replicasets?labelSelector=${selectorLabels}&limit=500" | jq -r '.items[] | .metadata.creationTimestamp' | sort -r | head -1) | |
data+=",${kube_date}" | |
kube_date_bash=$($DATE -d"$kube_date" +%s) | |
# echo "${kube_date_bash}" | |
kube_date_difference=$(($current_date-$kube_date_bash)) | |
diff=$(printf "%02dd %02dh %02dm %02ds" $((kube_date_difference/86400)) $((kube_date_difference%86400/3600)) $((kube_date_difference%3600/60)) $((kube_date_difference%60))) | |
data+=",$diff" | |
data+=$'\n' | |
done <<< "$deployments" | |
# note: this requires "column" from util-linux on Mac | |
# brew install util-linux | |
echo "$data" | column --table --separator "," |
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