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Установка Prometheus server и Node exporter
Prometheus server install
wget https://github.com/prometheus/prometheus/releases/download/v2.55.0-rc.0/prometheus-2.55.0-rc.0.linux-amd64.tar.gz
- скачиваем прометеус серверtar xvfz *.tar.gz
cd prometheus-2.55.0-rc.0.linux-amd64.tar.gz
sudo mv prometheus /usr/local/bin/
sudo mv promtool /usr/local/bin
sudo mkdir /etc/prometheus/
sudo mkdir /etc/prometheus/data
sudo mv prometheus.yml /etc/prometheus/
# prometheus.yml
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"
scrape_configs:
- job_name: "prometheus"
static_configs:
- targets: ["localhost:9090"]
- job_name: "archers-paradox-servers"
static_configs:
- targets:
- 89.22.241.241:9100
useradd -rs /bin/false prometheus
- создаём системного пользователя для работы с prometheuschown prometheus:prometheus /usr/local/bin/prometheus
chown -R prometheus:prometheus /etc/prometheus
vi /etc/systemd/system/prometheus.service
- создаём systemd юнит
[Unit]
Description=Prometheus Server
After=network.target
[Service]
User=prometheus
Group=prometheus
Type=simple
Restart=on-failure
RestartSec=4s
ExecStart=/usr/local/bin/prometheus \
--config.file /etc/prometheus/prometheus.yml \
--storage.tsdb.path /etc/prometheus/data
[Install]
WantedBy=multi-user.target
sudo systemctl daemon-reload
- обновить systemdsudo systemctl start prometheus
sudo systemctl enable prometheus
Node exporter install
-
wget https://github.com/prometheus/node_exporter/releases/download/v1.8.2/node_exporter-1.8.2.linux-arm64.tar.gz
- скачиваем node exporter на удалённый хост -
tar xvfz *.tar.gz
-
sudo mv node_exporter /usr/local/bin/
-
sudo useradd -rs /bin/false node_exporter
-
sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter
-
sudo vi /etc/systemd/system/node_exporter.service
# node_exporter.service
[Unit]
Description=Prometheus Node Exporter
After=network.target
[Service]
User=node_exporter
Group=node_exporter
Type=simple
Restart=on-failure
RestartSec=4s
ExecStart=/usr/local/bin/node_exporter
[Install]
WantedBy=multi-user.target
systemctl daemon-reload
sudo systemctl start node_exporter
sudo systemctl enable node_exporter
Про PromQL
increase()
возвращает общий прирост за указанный интервал времени.
increase(<метрика>[<интервал>])
rate()
вычисляет скорость изменения за этот же интервал времени, и в результате возвращает количество изменений в секунду.increase(http_requests_total[5m])
— покажет, сколько запросов пришло за последние 5 минут.rate(http_requests_total[5m])
— покажет среднее количество запросов в секунду за последние 5 минут.
Полезности
promtool check config prometheus.yml
promtool check rules rules.yml
promtool test rules rules_test.yml