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apiVersion: v1
kind: ConfigMap
metadata:
name: prometheus-reloader-script
namespace: monitoring
data:
hook.sh: |-
#!/bin/sh
set -exo pipefail
# Endpoint to call to reload Prometheus
RELOAD_URL="http://localhost:9090/-/reload"
# Icon for the webhook
PROMETHEUS_ICON_URL="https://static-00.iconduck.com/assets.00/prometheus-icon-511x512-1vmxbcxr.png"
echo "Detected change in mounted configmaps, reloading Prometheus..."
# Make a temporary store to keep any errors
RESPONSE_STORE="$(mktemp)"
# Attempt the reload, writing the response to the tempfile and the reload HTTP
# code to the variable
RELOAD_RESULT="$(curl -o "$RESPONSE_STORE" -X POST $RELOAD_URL -s -w "%{http_code}")"
# Parse and filter the response body into a JSON string
RESPONSE_CONTENT="$(cat "$RESPONSE_STORE")"
FILTERED_BODY="$(echo "$RESPONSE_CONTENT" | jq -Rsa)"
# Send a notification based on pass/failure
if [ $RELOAD_RESULT -eq 200 ]; then
BODY='{"username": "Prometheus Reloader", "embeds": [{ "title": "Prometheus Config Reload Succeeded", "description": "No errors.", "color": 6663286 } ], "avatar_url": "'"$PROMETHEUS_ICON_URL"'" }'
else
BODY='{"username": "Prometheus Reloader", "embeds": [{ "title": "Prometheus Config Reload Failed", "description": '"$FILTERED_BODY"', "color": 12799052 } ], "avatar_url": "'"$PROMETHEUS_ICON_URL"'" }'
fi;
# Send the webhook
curl -X POST -H "Content-Type: application/json" "$RELOADER_DISCORD_HOOK" -d "$BODY"
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