Shulou(Shulou.com)06/01 Report--

Editor to share with you how to install centos7.8 prometheus and grafana, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Installation preparation

Virtual machines: centos7.8 2

In this practice, two virtual machines with centos7.8 installed are used as the practice environment to install prometheus2.8.1 and grafana, and the monitoring of these two hosts is configured in prometheus.

The specific installation plan is as follows:

Hostname

Ip

Os

Cpu

Memory

Disk

Remarks

Prometheus-host

172.22.3.148

Centos7.8

2c

2g

20g

Prometheus

Grafana

Node_exporter

Prometheus-node

172.22.3.149

Centos7.8

2c

2g

20g

Node_exporter

Related installation files

Https://github.com/prometheus/prometheus/releases/download/v2.24.0/prometheus-2.24.0.linux-amd64.tar.gzhttps://dl.grafana.com/oss/release/grafana-7.3.6-1.x86_64.rpmhttps://github.com/prometheus/node_exporter/releases/download/v1.0.1/node_exporter-1.0.1.linux-amd64.tar.gz

Note: if not specified, the following deployments are all deployed in prometheus-host

Install prometheus

download

# cd / opt# wget https://github.com/prometheus/prometheus/releases/download/v2.8.1/prometheus-2.8.1.linux-amd64.tar.gz

Installation

# cd / opt# tar-zxf prometheus-2.8.1.linux-amd64.tar.gz# mv prometheus-2.8.1.linux-amd64 prometheus

Start

# cd / opt/prometheus#. / prometheus

Create a service and set up automatic startup

# # create service# vi / usr/lib/systemd/system/prometheus.service [Unit] Description=prometheusDocumentation= https://prometheus.io/After=network.target[Service]Type=simpleUser=rootGroup=rootExecStart=/opt/prometheus/prometheus-- config.file=/opt/prometheus/prometheus.ymlRestart=on-failure [Install] WantedBy=multi-user.target# systemctl daemon-reload## setup self-launch # systemctl enable prometheusCreated symlink from / etc/systemd/system/multi-user.target.wants/prometheus.service to / usr/lib/systemd/system/prometheus.service.## launch Service # systemctl start prometheus

Visit prometheus

Enter http://172.22.3.148:9090 in the browser address bar

Install grafana

download

# cd / opt# wget https://dl.grafana.com/oss/release/grafana-7.3.6-1.x86_64.rpm

Installation

# cd / opt# yum install grafana-7.3.6-1.x86_64.rpm

Start

# # servicesystemctl daemon-reloadsystemctl start grafana-server of grafana-server is automatically generated after installation

Set up automatic start

# # setting self-booting # systemctl enable grafana-server

Access grafana and configure the default data source

Enter http://172.22.3.148:3000 in the browser address bar

Log in with the default username password admin/admin

You need to set a new password after logging in for the first time as above.

Data sources need to be configured after granfa installation

Select Prometheus and click Select

Just set URL to http://localhost:9090

Others remain by default, just click the "Save & Test" button directly.

Pop up a prompt to save successfully, and click the "Back" button to return.

You can see that grafana has saved a data source.

Install node_exporter and configure host monitoring with prometheus

download

# cd / usr/local# wget https://github.com/prometheus/node_exporter/releases/download/v1.0.1/node_exporter-1.0.1.linux-amd64.tar.gz

Installation

# cd / usr/local# tar-zxf node_exporter-1.0.1.linux-amd64.tar.gz# mv node_exporter-1.0.1.linux-amd64/node_exporter. / bin/

Create a service and set up automatic startup

# # create service# vi / usr/lib/systemd/system/node_ exporter.service [unit] Description=node_exporterDocumentation= https://prometheus.io/After=network.target[Service]Type=simpleUser=rootGroup=rootExecStart=/usr/local/bin/node_exporterRestart=on-failure[Install]WantedBy=multi-user.target# systemctl daemon-reload## setup self-startup # systemctl enable node_exporterCreated symlink from / etc/systemd/system/multi-user.target.wants/node_exporter.service to / usr/lib/systemd/system/node_exporter.service.## launch service # systemctl start node_exporter

Configure host prometheus-host monitoring in prometheus

Modify the prometheus configuration file prometheus.yml and add the following configuration under scrape_configs

-job_name: 'prometheus-host' file_sd_configs:-files: [' / opt/prometheus/sd_config/prometheus-host.yml'] refresh_interval: 5s

Add / opt/prometheus/sd_config/prometheus-host.yml file, which is as follows

Cat / opt/prometheus/sd_config/prometheus-host.yml- targets:-172.22.3.149 9100

Note: use promtool to check whether the configuration file is correct each time the configuration is modified

# / opt/prometheus/promtool check config / opt/prometheus/prometheus.yml

Restart prometheus

# systemctl restart prometheus

Enter http://172.22.3.148:9090/targets in the browser address bar

You can see that targets has increased the monitoring of the host prometheus-host

Configure the panel to display the monitoring content of the host prometheus-host in grafana

Click the "+" button to pop up the import panel window

If you enter 8919 in the figure, click Load,grafana to import the panel numbered 8919 directly from the official website as follows

Select the data source Prometheus, continue with "Import", and display the node monitoring interface as follows

Install node_exporter in prometheus-nodes and configure host monitoring with prometheus

Installation steps refer to the steps to install node_exporter in prometheus-host

Configure host prometheus-nodes monitoring in prometheus

Modify the prometheus configuration file prometheus.yml and add the following configuration under scrape_configs

-job_name: 'prometheus-nodes' file_sd_configs:-files: [' / opt/prometheus/sd_config/prometheus-nodes.yml'] refresh_interval: 5s

Add / opt/prometheus/sd_config/prometheus-nodes.yml file, which is as follows

Cat / opt/prometheus/sd_config/prometheus-nodes.yml- targets:-172.22.3.148purl 9100

Restart prometheus

# systemctl restart prometheus

Enter http://172.22.3.148:9090/targets in the browser address bar

You can see that targets has increased the monitoring of the host prometheus-nodes

When you visit grafana, you can also see that prometheus-nodes is added to the node monitoring interface.

The above is all the contents of the article "how to install prometheus and grafana in centos7.8". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.