This pages shows the different components that need to be installed so a monitoring server have all the necessary tools to:
Query language to check time-series data.
Scrap metrics from other servers.
Alerting system.
An app to monitor time-series data, alerts.
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Prometheus
Prometheus is an open-source tool that provides a query language for time-series data. It collects and stores metrics in a time-series database. To install prometheus the user must follow this steps:
Download prometheus with the following command:
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sudo wget https://github.com/prometheus/prometheus/releases/download/v2.47.0/prometheus-2.47.0.linux-amd64.tar.gz |
Extract the files with the following command:
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sudo tar vxf prometheus*.tar.gz |
Create a System User for Prometheus:
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sudo groupadd --system prometheus
sudo useradd -s /sbin/nologin --system -g prometheus prometheus |
Create Directories for Prometheus:
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sudo mkdir /etc/prometheus
sudo mkdir /var/lib/prometheus |
Navigate to the Prometheus Directory:
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cd prometheus*/ |
Move Files:
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#Move the Binary Files
sudo mv prometheus /usr/local/bin
sudo mv promtool /usr/local/bin
#Move other Files
sudo mv console* /etc/prometheus
sudo mv prometheus.yml /etc/prometheus |
Set Owner:
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sudo chown prometheus:prometheus /usr/local/bin/prometheus
sudo chown prometheus:prometheus /usr/local/bin/promtool
sudo chown prometheus:prometheus /etc/prometheus
sudo chown -R prometheus:prometheus /etc/prometheus/consoles
sudo chown -R prometheus:prometheus /etc/prometheus/console_libraries
sudo chown -R prometheus:prometheus /var/lib/prometheus |
Change Prometheus configuration file:
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sudo nano /etc/prometheus/prometheus.yml |
Add the following initial configuration so prometheus server can start:
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global:
scrape_interval: 15s
evaluation_interval: 15s
scrape_configs:
- job_name: 'prometheus'
static_configs:
- targets: ['localhost:9090']
- job_name: 'node'
static_configs:
- targets: ['localhost:9100'] |
Create prometheus service:
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sudo nano /etc/systemd/system/prometheus.service |
Add the following configuration to the service file:
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[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
[Install]
WantedBy=multi-user.target |
Reload the daemon configuration:
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sudo systemctl daemon-reload |
Enable Prometheus:
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sudo systemctl enable prometheus |
Start Prometheus:
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sudo systemctl start prometheus |
Check that prometheus is running without issues:
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sudo systemctl status prometheus |