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Merge pull request kruize#1207 from khansaad/move-to-kind
Add new script to install Prometheus on Kind
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| #!/bin/bash | ||
| # | ||
| # Copyright (c) 2024 Red Hat, IBM Corporation and others. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| # | ||
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| # include the common_utils.sh script to access methods | ||
| current_dir="$(dirname "$0")" | ||
| source ${current_dir}/common_utils.sh | ||
| non_interactive=0 | ||
| # Call setup by default (and not terminate) | ||
| setup=1 | ||
|
|
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| # Prometheus release default | ||
| tag="v0.13.0" | ||
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| function install_prometheus() { | ||
| echo | ||
| echo "Info: Checking pre requisites for prometheus..." | ||
| check_kustomize | ||
|
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| prometheus_ns="monitoring" | ||
| kubectl_cmd="kubectl -n ${prometheus_ns}" | ||
| prometheus_pod_running=$(${kubectl_cmd} get pods | grep "prometheus-k8s-1") | ||
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| if [ "${prometheus_pod_running}" != "" ]; then | ||
| echo "Prometheus is already installed and running." | ||
| return; | ||
| fi | ||
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| if [ "${non_interactive}" == 0 ]; then | ||
| echo "Info: Prometheus needs cadvisor/grafana" | ||
| echo -n "Download and install these software to KIND(y/n)? " | ||
| read inst | ||
| linst=$(echo ${inst} | tr A-Z a-z) | ||
| if [ "${linst}" == "n" ]; then | ||
| echo "Info: prometheus not installed" | ||
| exit 0 | ||
| fi | ||
| fi | ||
|
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| mkdir kind_downloads 2>/dev/null | ||
| pushd kind_downloads >/dev/null | ||
| echo "Info: Downloading cadvisor git" | ||
| git clone https://github.com/google/cadvisor.git 2>/dev/null | ||
| pushd cadvisor/deploy/kubernetes/base >/dev/null | ||
| echo | ||
| echo "Info: Installing cadvisor" | ||
| kubectl kustomize . | kubectl apply -f- | ||
| check_err "Error: Unable to install cadvisor" | ||
| popd >/dev/null | ||
| echo | ||
| echo "Info: Downloading prometheus git release - ${tag}" | ||
| # Commenting the below lines as the latest prometheus requires more than 2 CPUs and the PR checks fail on github hosted runners | ||
| # as they have only 2 CPUs on the host. Hence switching back to prometheus release 0.8.0 (Apr 2021) | ||
| # git clone https://github.com/coreos/kube-prometheus.git 2>/dev/null | ||
| git clone -b ${tag} https://github.com/coreos/kube-prometheus.git 2>/dev/null | ||
| pushd kube-prometheus/manifests >/dev/null | ||
| echo | ||
| echo "Info: Installing prometheus" | ||
| kubectl apply -f setup --server-side | ||
| check_err "Error: Unable to setup prometheus" | ||
| kubectl apply -f . --server-side | ||
| check_err "Error: Unable to install prometheus" | ||
| popd >/dev/null | ||
| popd >/dev/null | ||
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| echo -n "Info: Waiting for all Prometheus Pods to get spawned..." | ||
| while true; | ||
| do | ||
| # Wait for prometheus docker images to get downloaded and spawn the main pod | ||
| pod_started=$(${kubectl_cmd} get pods | grep "prometheus-k8s-1") | ||
| if [ "${pod_started}" == "" ]; then | ||
| # prometheus-k8s-1 not yet spawned | ||
| echo -n "." | ||
| sleep 5 | ||
| else | ||
| echo "done" | ||
| break; | ||
| fi | ||
| done | ||
| check_running prometheus-k8s-1 ${prometheus_ns} | ||
| sleep 2 | ||
| } | ||
|
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| function delete_prometheus() { | ||
| echo -n "### Removing cadvisor and prometheus" | ||
| pushd kind_downloads > /dev/null | ||
| echo | ||
| echo "Removing cadvisor" | ||
| pushd cadvisor/deploy/kubernetes/base > /dev/null | ||
| kubectl kustomize . | kubectl delete -f- | ||
| popd > /dev/null | ||
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| echo | ||
| echo "Removing prometheus" | ||
| pushd kube-prometheus/manifests > /dev/null | ||
| kubectl delete -f . 2>/dev/null | ||
| kubectl delete -f setup 2>/dev/null | ||
| popd > /dev/null | ||
| popd > /dev/null | ||
| rm -rf kind_downloads | ||
| } | ||
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| # Input from user to install/delete prometheus | ||
| function usage() { | ||
| echo >&2 "usage: $0 [-r <prometheus release tag (default - v0.8.0)] [-a] [-s|t] where -a= non-interactive mode, -s=start, -t=terminate "; | ||
| exit 1; | ||
| } | ||
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| # empty argument validation | ||
| if [ $# -eq 0 ]; then | ||
| usage | ||
| fi | ||
|
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| while getopts "r:ast" option; | ||
| do | ||
| case "${option}" in | ||
| r) | ||
| tag=${OPTARG} | ||
| ;; | ||
| a) | ||
| non_interactive=1 | ||
| ;; | ||
| s) # For option s to install the prometheus | ||
| setup=1 | ||
| ;; | ||
| t) # For option t terminating and deleting the prometheus | ||
| setup=0 | ||
| ;; | ||
| \?) # For invalid option | ||
| usage | ||
| ;; | ||
| esac | ||
| done | ||
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| if [ "${setup}" == 1 ]; then | ||
| echo "Info: installing prometheus..." | ||
| install_prometheus | ||
| else | ||
| echo "Info: deleting prometheus..." | ||
| delete_prometheus | ||
| fi |