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prometheus-deploy.sh
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prometheus-deploy.sh
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#!/usr/bin/env bash
# Deploys prometheus-operator Helm Chart and Forgerock Metrics which include custom
# endpoints, alerting rules and Grafana dashboards.
# ./prometheus-deploy.sh -n namespace - deploy to different namespace than monitoring.
# ./prometheus-deploy.sh -v values file - use different custom values file.
# ./prometheus-deploy.sh -d - delete deployment.
#
# Prerequisite: Helm version 3.04 or higher.
# You can deploy your own custom values file by using the -v <values file> flag.
set -oe pipefail
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
ADDONS_BASE="${ADDONS_BASE:-${DIR}/../cluster/addons}"
ADDONS_DIR="${ADDONS_BASE}/prometheus"
PROM_VALUES="${ADDONS_DIR}/prometheus-operator.yaml"
NAMESPACE=monitoring
USAGE="Usage: $0 [-n <namespace>] [-v <values file>] [-d]"
# Create namespace
create_ns() {
ns=$(kubectl get namespace | grep $NAMESPACE | awk '{ print $1 }' || true)
if [ -z "${ns}" ]; then
kubectl create namespace $NAMESPACE
else
printf "*** $NAMESPACE namespace already exists ***\n"
fi
}
# deploy Prometheus Operator and forgerock metrics
deploy() {
# Deploy self-signed cert-manager issuer to generate a certificate for the webhook connection
kubectl apply -f - <<EOF
apiVersion: cert-manager.io/v1
kind: Issuer
metadata:
name: selfsigned-issuer
namespace: $NAMESPACE
spec:
selfSigned: {}
EOF
# Add prometheus-community repo to helm
helm repo add "prometheus-community" "https://prometheus-community.github.io/helm-charts" --force-update
helm repo update
helm upgrade -i prometheus-operator prometheus-community/kube-prometheus-stack -f $PROM_VALUES --namespace=$NAMESPACE
kubectl -n $NAMESPACE wait --for condition=established --timeout=60s \
crd/prometheuses.monitoring.coreos.com \
crd/servicemonitors.monitoring.coreos.com \
crd/servicemonitors.monitoring.coreos.com \
crd/podmonitors.monitoring.coreos.com \
crd/alertmanagers.monitoring.coreos.com \
crd/alertmanagerconfigs.monitoring.coreos.com \
crd/probes.monitoring.coreos.com
kubectl -n $NAMESPACE wait --for condition=Ready --timeout=60s pod --all
# Install/Upgrade forgerock-servicemonitors
helm upgrade -i forgerock-metrics ${ADDONS_DIR}/forgerock-metrics --namespace=$NAMESPACE
}
# Delete all
delete() {
set +e
# Delete forgerock-metrics Helm chart
helm delete forgerock-metrics --namespace=$NAMESPACE
# Delete Prometheus Operator Helm chart
helm uninstall prometheus-operator --namespace=$NAMESPACE
# Delete CRDs
kubectl delete --wait=true crd prometheuses.monitoring.coreos.com
kubectl delete --wait=true crd prometheusrules.monitoring.coreos.com
kubectl delete --wait=true crd servicemonitors.monitoring.coreos.com
kubectl delete --wait=true crd podmonitors.monitoring.coreos.com
kubectl delete --wait=true crd alertmanagers.monitoring.coreos.com
kubectl delete --wait=true crd alertmanagerconfigs.monitoring.coreos.com
kubectl delete --wait=true crd probes.monitoring.coreos.com
kubectl delete --wait=true crd thanosrulers.monitoring.coreos.com
# Delete monitoring namespace
kubectl delete ns $NAMESPACE
exit 0
}
# Output help if -h is included
if [[ $1 == "-h" ]];then
echo $USAGE
echo "-n <namespace> namespace"
echo "-v <values file> add custom values file for Prometheus operator (relative to $ADDONS_DIR)"
echo "-d delete Prometheus Operator and Forgerock metrics"
exit
fi
# Read arguments
while getopts :n:v:d option; do
case "${option}" in
n) NAMESPACE=${OPTARG};;
v) VALUES=${OPTARG};;
\?) echo "Error: Incorrect usage"
echo $USAGE
exit 1;;
esac
done
echo -e "\n**This script requires Helm version 3.04 or later due to changes in the behaviour of 'helm repo add' command.**\n"
## Validate arguments
# set custom yaml file if not provided with the -v arg
[ $VALUES ] && PROM_VALUES="${ADDONS_DIR}/${VALUES}"
# delete chart if -d select
[[ ${1} =~ "-d" ]] && delete
# Create namespace
create_ns
# Deploy to cluster
deploy