Prometheus deployment and use (two)

Prometheus deployment and use

1. Deploy in binary mode

1.1. Install prometheus

1.下载软件包
[root@prometheus-server ~]# wget https://github.com/prometheus/prometheus/releases/download/v2.23.0/prometheus-2.23.0.linux-amd64.tar.gz

2.安装
[root@prometheus-server ~]# mkdir /data/ -p
[root@prometheus-server ~]# tar xf prometheus-2.23.0.linux-amd64.tar.gz -C /data/
[root@prometheus-server ~]# mv /data/prometheus-2.23.0.linux-amd64 /data/prometheus

3.将可执行程序移动到/usr/bin
[root@prometheus-server ~]# lscd /data/prometheus
[root@prometheus-server prometheus]# cp prom* /usr/bin/
[root@prometheus-server prometheus]# prometheus --version
prometheus, version 2.23.0 (branch: HEAD, revision: 26d89b4b0776fe4cd5a3656dfa520f119a375273)
  build user:       root@37609b3a0a21
  build date:       20201126-10:56:17
  go version:       go1.15.5
  platform:         linux/amd64

1.2. Start prometheus

Common startup parameters
-config.file="/data/prometheus/prometheus.yml" //Specify the configuration file path

--Web.enable-lifecycle //Enable web hot reload configuration

--Storage.tsdb.path= //Specify the tsdb database path, the default is in data/

--Storage.tsdb.retention.time= //Specify the length of time tsdb retains data, the default is 15d

启动prometheus
[root@prometheus-server ~]# prometheus --config.file="/data/prometheus/prometheus.yml" --web.enable-lifecycle &

1.3. Use systemctl to start prometheus

Write the systemctl file, specify the path of tsdb when writing the startup command

1.编写文件
[root@prometheus-server system]# cd /usr/lib/systemd/system
[root@prometheus-server system]# vim prometheus.service 
[Unit]
Description=https://prometheus.io

[Service]
Restart=on-failure
ExecStart=/data/prometheus/prometheus --config.file=/data/prometheus/prometheus.yml --web.enable-lifecycle --storage.tsdb.path=/data/prometheus/data

[Install]
WantedBy=multi-user.target


2.加载system配置以及启动服务
[root@prometheus-server system]# systemctl daemon-reload
[root@prometheus-server system]# systemctl start prometheus.service
[root@prometheus-server system]# systemctl enable prometheus.service

3.查看进程
[root@prometheus-server system]# ps aux | grep prome

1.4. Access prometheus

Visit: http://loclahost:9090

View the monitoring host page

status—>targets

1.5. Modify the prometheus address of the monitoring host page to the real ip address

1.修改配置，找到targets一行，将localhost修改为真实地址即可
[root@prometheus-server ~]# vim /data/prometheus/prometheus.yml 
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: ['192.168.81.210:9090']
    
2.加载配置
由于启动增加了--web.enable-lifecycle，因此可以使用配置加载功能
[root@prometheus-server ~]# curl -XPOST 192.168.81.210:9090/-/reload

Click the link below the endpoint to see the metris metric

2. Docker deploy prometheus

2.1. Install docker

1.获取镜像源
[root@prometheus-server ~]# wget -O /etc/yum.repos.d/docker-ce.repo https://download.docker.com/linux/centos/docker-ce.repo
[root@prometheus-server ~]# sed -i 's#download.docker.com#mirrors.tuna.tsinghua.edu.cn/docker-ce#' /etc/yum.repos.d/docker-ce.repo 
[root@prometheus-server ~]# yum makecache fast

2.安装docker
[root@prometheus-server ~]# yum -y install docker-ce

3.配置镜像加速器
[root@prometheus-server ~]# tee /etc/docker/daemon.json <<-'EOF'
{
   "registry-mirrors": ["https://zggyaen3.mirror.aliyuncs.com"]
}
EOF


4.启动docker
[root@prometheus-server ~]# systemctl restart docker

2.2. Run prometheus container

We mount the newly installed prometheus configuration file to the container and map it to port 7090

[root@prometheus-server ~]# docker run -d -p7090:9090  -v /data/prom/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus:latest 
517523d6da1d4135bbd5d6bb2714576f20b7da832b6d75ce7dc88f1844c1d5f4
[root@prometheus-server ~]# docker ps -a
CONTAINER ID   IMAGE                    COMMAND                  CREATED          STATUS          PORTS                    NAMES
517523d6da1d   prom/prometheus:latest   "/bin/prometheus --c…"   16 seconds ago   Up 10 seconds   0.0.0.0:7090->9090/tcp   hopeful_tharp