DevOps Tools/Prometheus
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| − | [[ DevOps_Tools/Monitoring | Overview ]] | [[ DevOps_Tools/Prometheus | Prometheus Server ]] | + | [[ DevOps_Tools/Monitoring | Overview ]] | [[ DevOps_Tools/Prometheus | Prometheus Server ]] | [[ DevOps_Tools/Prometheus/Exporter | Prometheus Node Exporter ]] |
=CentOS 7 Installation= | =CentOS 7 Installation= | ||
Revision as of 01:37, 7 September 2022
Overview | Prometheus Server | Prometheus Node Exporter
Contents |
CentOS 7 Installation
Create dependencies
~$ sudo yum install -y wget curl
~$ sudo groupadd --system prometheus
~$ sudo useradd -s /sbin/nologin --system -g prometheus prometheus
~$ sudo mkdir /var/lib/prometheus
~$ for i in rules rules.d files_sd; do sudo mkdir -p /etc/prometheus/${i}; done
~$ mkdir -p /tmp/prometheus && cd /tmp/prometheus
Download and setup
~$ curl -s https://api.github.com/repos/prometheus/prometheus/releases/latest | grep browser_download_url | grep linux-amd64 | cut -d '"' -f 4 | wget -qi - ~$ tar xvf prometheus*.tar.gz ~$ cd prometheus*/ ~$ sudo mv prometheus promtool /usr/local/bin/ ~$ sudo mv prometheus.yml /etc/prometheus/prometheus.yml ~$ sudo mv consoles/ console_libraries/ /etc/prometheus/ ~$ cd ~/ ~$ rm -rf /tmp/prometheus
Create config
~$ sudo vim /etc/prometheus/prometheus.yml
prometheus config
# my global config
global:
scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
# scrape_timeout is set to the global default (10s).
# Alertmanager configuration
alerting:
alertmanagers:
- static_configs:
- targets:
# - alertmanager:9093
# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
# - "first_rules.yml"
# - "second_rules.yml"
# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
# The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
- job_name: 'prometheus'
# metrics_path defaults to '/metrics'
# scheme defaults to 'http'.
static_configs:
- targets: ['localhost:9090']
Setup permissions
~$ for i in rules rules.d files_sd; do sudo chown -R prometheus:prometheus /etc/prometheus/${i}; done
~$ for i in rules rules.d files_sd; do sudo chmod -R 775 /etc/prometheus/${i}; done
~$ sudo chown -R prometheus:prometheus /var/lib/prometheus/
Setup Firewall rules
~$ sudo firewall-cmd --zone=public --permanent --add-port=9090/tcp ~$ sudo firewall-cmd --reload
Create systemd service
~$ sudo vim /etc/systemd/system/prometheus.service
systemd service
[Unit] Description=Prometheus Documentation=https://prometheus.io/docs/introduction/overview/ Wants=network-online.target After=network-online.target [Service] Type=simple User=prometheus Group=prometheus ExecReload=/bin/kill -HUP $MAINPID ExecStart=/usr/local/bin/prometheus \ --config.file=/etc/prometheus/prometheus.yml \ --storage.tsdb.path=/var/lib/prometheus \ --web.console.templates=/etc/prometheus/consoles \ --web.console.libraries=/etc/prometheus/console_libraries \ --web.listen-address=0.0.0.0:9090 \ --web.external-url= SyslogIdentifier=prometheus Restart=always [Install] WantedBy=multi-user.target
~$ sudo systemctl daemon-reload ~$ sudo systemctl start prometheus ~$ sudo systemctl enable prometheus
Test
Test connection to the server running Prometheus on port 9090
