Prometheus monitors liunx host
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)
