In the last post, we covered about the PowerShell script to install Prometheus, Grafana and Windows Exporter on a Windows Server, which was more of a fun project considering most organizations or people would prefer to have these installed over Linux servers (At least Prometheus and Grafana for sure) and not sure anyone would prefer the same in production considering cost, performance and other reasons. Windows nodes anyways can send data to such Linux Servers.
I do not have background in shell scripting so earlier, I did post step by step guide about how to setup the same over a Linux server but post the PowerShell script, I thought why not to replicate the same with a single Bash script as it would be lot fun to learn the language in the process. So here we go with the first version of script.
The script is not exactly similar to the windows one and as of now do not have removal and configuration related functions. Also I would need to see how it can work over remote nodes for scaling purposes but AS IS it does download the latest versions of the packages and then installs those.
Nitish Kumar
To test it out, I reformatted the Linux machine and did a fresh install keeping all settings untouched so that if anything blocks on a vanilla install then I would have an idea over that. Also I exported the dashboards from the share menu as JSON files so that can re-import them later after adding the same name data source. It worked like a charm.
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| #!/bin/bash | |
| # Author : Nitish Kumar | |
| # Download and Install Prometheus, Grafana and Node Exporter | |
| # version 1.0 | 24/10/2022 Initial version | |
| # version 1.1 | 25/10/2022 Removed sudo from inside the script, added remove-services function | |
| PROMETHEUS_VERSION=$(curl -s https://raw.githubusercontent.com/prometheus/prometheus/master/VERSION) | |
| NODE_VERSION=$(curl -s https://raw.githubusercontent.com/prometheus/node_exporter/master/VERSION) | |
| # Color variables for coloured text | |
| red=`tput setaf 1` | |
| green=`tput setaf 2` | |
| reset=`tput sgr0` | |
| # Ready up executables | |
| Get-Executables (){ | |
| args=("$@") | |
| echo "${green}Creating $HOME/executables to keep downloads …${reset}" | |
| mkdir -p $HOME/executables | |
| # Annoucing what would be downloaded | |
| echo "${green}Finding latest versions of ${#args[@]} packages: $(echo $@ | tr " " ",") ${reset}" | |
| # Capturing latest versions aailable | |
| if [[ "$*" == *"prometheus"* ]] | |
| then | |
| echo "${green}The latest versions of Prometheus available is ($PROMETHEUS_VERSION), downloading the same… ${reset}" | |
| # quiet mode used, if you need output for troubleshooting reasons, remove -q | |
| wget -q https://github.com/prometheus/prometheus/releases/download/v${PROMETHEUS_VERSION}/prometheus-${PROMETHEUS_VERSION}.linux-amd64.tar.gz -P $HOME/executables | |
| fi | |
| if [[ "$*" == *"node_exporter"* ]] | |
| then | |
| echo "${green}The latest versions of Node Exporter available is ($NODE_VERSION), downloading the same… ${reset}" | |
| # quiet mode used, if you need output for troubleshooting reasons, remove -q | |
| wget -q https://github.com/prometheus/node_exporter/releases/download/v${NODE_VERSION}/node_exporter-${NODE_VERSION}.linux-amd64.tar.gz -P $HOME/executables | |
| fi | |
| if [[ "$*" == *"grafana"* ]] | |
| then | |
| # Checking for Grafana oss report and creating if not there | |
| if [ -e /etc/yum.repos.d/grafana.repo ] | |
| then | |
| echo "${red}grafana repo is already created…${reset}" | |
| else | |
| echo "${green}Creating Grafana repo entry in yum.repos.d…${reset}" | |
| cat >/etc/yum.repos.d/grafana.repo <<EOL | |
| [grafana] | |
| name=grafana | |
| baseurl=https://packages.grafana.com/oss/rpm | |
| repo_gpgcheck=1 | |
| enabled=1 | |
| gpgcheck=1 | |
| gpgkey=https://packages.grafana.com/gpg.key | |
| sslverify=1 | |
| sslcacert=/etc/pki/tls/certs/ca-bundle.crt | |
| EOL | |
| fi | |
| fi | |
| } | |
| Install-Executables() { | |
| # Setup Prometheus | |
| if [[ "$*" == *"prometheus"* ]] | |
| then | |
| if [ -e $HOME/executables/prometheus-${PROMETHEUS_VERSION}.linux-amd64.tar.gz ] | |
| then | |
| # Make prometheus user | |
| echo "${green} Creating prometheus user …${reset}" | |
| useradd -rs /bin/false -c "Prometheus User" prometheus | |
| tar xzf $HOME/executables/prometheus-${PROMETHEUS_VERSION}.linux-amd64.tar.gz -C $HOME/executables/ | |
| cd $HOME/executables/ | |
| # Make directories and dummy files necessary for prometheus | |
| mkdir /etc/prometheus | |
| mkdir /var/lib/prometheus | |
| touch /etc/prometheus/prometheus.yml | |
| # permissions setup | |
| chown -R prometheus:prometheus /etc/prometheus | |
| cp prometheus-${PROMETHEUS_VERSION}.linux-amd64/prometheus /usr/local/bin/ | |
| cp prometheus-${PROMETHEUS_VERSION}.linux-amd64/promtool /usr/local/bin/ | |
| cp -r prometheus-${PROMETHEUS_VERSION}.linux-amd64/consoles /etc/prometheus | |
| cp -r prometheus-${PROMETHEUS_VERSION}.linux-amd64/console_libraries /etc/prometheus | |
| cp -r prometheus-${PROMETHEUS_VERSION}.linux-amd64/prometheus.yml /etc/prometheus | |
| # permissions setup | |
| chown prometheus:prometheus /var/lib/prometheus | |
| chown -R prometheus:prometheus /etc/prometheus/consoles | |
| chown -R prometheus:prometheus /etc/prometheus/console_libraries | |
| chown prometheus:prometheus /usr/local/bin/prometheus | |
| chown prometheus:prometheus /usr/local/bin/promtool | |
| chown prometheus:prometheus /etc/prometheus/prometheus.yml | |
| # update service configuration | |
| cat >/etc/systemd/system/prometheus.service <<EOL | |
| [Unit] | |
| Description=Prometheus | |
| Wants=network-online.target | |
| After=network-online.target | |
| [Service] | |
| User=prometheus | |
| Group=prometheus | |
| Type=simple | |
| ExecStart=/usr/local/bin/prometheus \ | |
| –config.file /etc/prometheus/prometheus.yml \ | |
| –storage.tsdb.path /var/lib/prometheus/ \ | |
| –web.console.templates=/etc/prometheus/consoles \ | |
| –web.console.libraries=/etc/prometheus/console_libraries | |
| EOL | |
| # setup service | |
| echo "${green} Enabling and starting prometheus service … ${reset}" | |
| systemctl daemon-reload | |
| systemctl enable prometheus | |
| systemctl start prometheus | |
| # create firewall rules | |
| echo "${green} Creating firewall rules for prometheus service … ${reset}" | |
| firewall-cmd –zone=public –add-port=9090/tcp –permanent | |
| systemctl reload firewalld | |
| echo "${green}If all went well, then you should be able to access Prometheus on http://localhost:9090 …${reset}" | |
| # Installation cleanup | |
| echo "${green} Cleaning up prometheus installer files … ${reset}" | |
| rm prometheus-${PROMETHEUS_VERSION}.linux-amd64.tar.gz | |
| rm -rf prometheus-${PROMETHEUS_VERSION}.linux-amd64 | |
| else | |
| echo "${red} Installer files not available at ($HOME/executables/) … ${reset}" | |
| fi | |
| fi | |
| # Setup Node Exporter | |
| if [[ "$*" == *"node_exporter"* ]] | |
| then | |
| if [ -e $HOME/executables/node_exporter-${NODE_VERSION}.linux-amd64.tar.gz ] | |
| then | |
| # Make node_exporter user | |
| echo "${green} Creating nodeusr user …${reset}" | |
| useradd -rs /bin/false -c "Node Exporter User" nodeusr | |
| tar xzf $HOME/executables/node_exporter-${NODE_VERSION}.linux-amd64.tar.gz -C $HOME/executables/ | |
| cd $HOME/executables/ | |
| cp node_exporter-${NODE_VERSION}.linux-amd64/node_exporter /usr/local/bin/ | |
| chown nodeusr:nodeusr /usr/local/bin/node_exporter | |
| # update service configuration | |
| cat >/etc/systemd/system/node_exporter.service <<EOL | |
| [Unit] | |
| Description=Node Exporter | |
| Wants=network-online.target | |
| After=network-online.target | |
| [Service] | |
| User=nodeusr | |
| Group=nodeusr | |
| Type=simple | |
| ExecStart=/usr/local/bin/node_exporter –collector.systemd | |
| [Install] | |
| WantedBy=multi-user.target | |
| EOL | |
| # setup service | |
| echo "${green} Enabling and starting node_exporter service … ${reset}" | |
| systemctl daemon-reload | |
| systemctl enable node_exporter | |
| systemctl start node_exporter | |
| # create firewall rules | |
| echo "${green} Creating firewall rules for node_exporter service (for windows one in addition) … ${reset}" | |
| firewall-cmd –zone=public –add-port=9100/tcp –permanent | |
| firewall-cmd –zone=public –add-port=9182/tcp –permanent # creating one of Windows Node in advance, you can comment the line if not needed | |
| systemctl reload firewalld | |
| echo "${green}If all went well, then you should be able to access Node_exporter on http://localhost:9100 …${reset}" | |
| # Installation cleanup | |
| echo "${green} Cleaning up Node Exporter installer files … ${reset}" | |
| rm node_exporter-${NODE_VERSION}.linux-amd64.tar.gz | |
| rm -rf node_exporter-${NODE_VERSION}.linux-amd64 | |
| else | |
| echo "${red} Installer files not available at ($HOME/executables/) … ${reset}" | |
| fi | |
| fi | |
| if [[ "$*" == *"grafana"* ]] | |
| then | |
| yum install grafana -y -q | |
| # setup service | |
| echo "${green} Enabling and starting Grafana service … ${reset}" | |
| systemctl daemon-reload | |
| systemctl enable grafana-server | |
| systemctl start grafana-server | |
| # create firewall rules | |
| echo "${green} Creating firewall rules for Grafana service … ${reset}" | |
| firewall-cmd –zone=public –add-port=3000/tcp –permanent | |
| systemctl reload firewalld | |
| echo "${green}If all went well, then you should be able to access Grafana on http://localhost:3000 …${reset}" | |
| fi | |
| } | |
| Remove-Services() { | |
| # Remove Node Exporter | |
| if [[ "$*" == *"node_exporter"* ]] | |
| then | |
| # Stop and remove Node Exporter Service | |
| echo "${green} Stoping and removing Node Exporter Service and related files … ${reset}" | |
| systemctl stop node_exporter | |
| systemctl disable node_exporter | |
| rm -f /usr/local/bin/node_exporter | |
| rm -f /etc/systemd/system/node_exporter.service | |
| systemctl daemon-reload | |
| systemctl reset-failed | |
| # Remove firewall rule created | |
| echo "${green} Removing Node Exporter related firewall rules … ${reset}" | |
| firewall-cmd –zone=public –remove-port=9100/tcp –permanent | |
| systemctl reload firewalld | |
| # Remove created user for the service | |
| echo "${green} Removing Node Exporter related user account … ${reset}" | |
| userdel -f nodeusr | |
| fi | |
| if [[ "$*" == *"prometheus"* ]] | |
| then | |
| # Stop and remove Prometheus Service | |
| echo "${green} Stoping and removing Prometheus Service and related files … ${reset}" | |
| systemctl stop prometheus | |
| systemctl disable prometheus | |
| rm -f /usr/local/bin/prometheus | |
| rm -f /usr/local/bin/promtool | |
| rm -rf /var/lib/prometheus | |
| rm -rf /etc/prometheus | |
| rm -f /etc/systemd/system/prometheus.service | |
| systemctl daemon-reload | |
| systemctl reset-failed | |
| # Remove firewall rule created | |
| echo "${green} Removing Prometheus related firewall rules … ${reset}" | |
| firewall-cmd –zone=public –remove-port=9090/tcp –permanent | |
| systemctl reload firewalld | |
| # Remove created user for the service | |
| echo "${green} Removing Prometheus related user account … ${reset}" | |
| userdel -f prometheus | |
| fi | |
| if [[ "$*" == *"grafana"* ]] | |
| then | |
| # Stop and remove Prometheus Service | |
| echo "${green} Stoping and removing Grafana Service and related files … ${reset}" | |
| systemctl stop grafana-server | |
| systemctl disable grafana-server | |
| systemctl daemon-reload | |
| systemctl reset-failed | |
| yum remove grafana -y -q | |
| # Removing Grafana Dashboards and DB | |
| echo "${red} Removing Grafana related files (db, rules, plugins etc) … ${reset}" | |
| rm -rf /var/lib/grafana | |
| # Remove firewall rule created | |
| echo "${green} Removing Grafana related firewall rules … ${reset}" | |
| firewall-cmd –zone=public –remove-port=3000/tcp –permanent | |
| systemctl reload firewalld | |
| fi | |
| } | |
| # Ready up executables | |
| Get-Executables prometheus grafana node_exporter | |
| Install-Executables prometheus grafana node_exporter | |
| #Remove-Services node_exporter grafana | |
| # You would still need to add config in /etc/prometheus/prometheus.yml before you can see data from the node |
Check it would and let me know.
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