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Bash script, which can download almost all the latest packages for Prometheus, Grafana and node Exporter and then proceed to configure them
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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 |
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