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Exporter is used in liunx basic resource monitoring

What is exporter?

Exporter is a component that collects monitoring data and provides data through prometheus monitoring. Exporter mainly obtains monitoring data through monitoring-related interfaces provided by monitored objects.

Installation and deployment

Wget https://github.com/prometheus/node_exporter/releases/download/v0.18.1/node_exporter-0.18.1.linux-amd64.tar.gz

Install to the corresponding directory

Make standard startup service

Cat / etc/systemd/system/node_ exporter.service[Unit] Description=node_ export[Service] ExecStart=/op/xxx/node_ export[Install] WantedBy=multi-user.target

Start

Systemctl enable node_exporter.service

Systemctl start node_exporter.service

Add host information in prometheus server

Scrape_configs: # The job name is added as a label `job= `to any timeseries scraped from this config. -job_name: 'shanghai' static_configs:-targets: [' x.x.x.xblog 90'] relabel_configs:-action: replace source_labels: ['job'] regex: (. *) replacement: $1 target_label: idc-job_name:' node1' static_configs:-targets: ['x.x.x.xpur9100']

Restart prometheus or reload the configuration file kill-hup $pid

Check whether the monitoring is in effect

Common monitoring items in exporter

Node_disk disk

Node_cpu cpu

Node_memory memory

Node_network network

Node_load1 system load

Commonly used query statements

Cpu utilization rate

Avg by (instance) (irate (node_cpu {instance= "xxx:9100", mode= "idle"} [5m])) * 100)

Average machine load

Network card receiving

Sum (rate (node_network_receive_bytes_total {instance= "xxx:9100", job= "server", lo = "lo"} [5m]))

Output of network card

Sum (rate (node_network_transmit_bytes {instance= "xxx:9100", job= "server", lo = "lo"} [5m]))

System load

Node_load1 {instance= "xxx:9100"} / / 1 minute load

Node_load5 {instance= "xxx:9100"} / / 5-minute load

Node_load15 {instance= "xxx:9100"} / / 15-minute load

Memory utilization

Round ((node_memory_MemTotal_bytes- (node_memory_MemFree_bytes+node_memory_Buffers_bytes+node_memory_Cached_bytes)) / node_memory_MemTotal_bytes * 100)

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