一，安装部署ansible和准备hosts文件
yum -y install ansible
注： 我把Prometheus和grafana的目录都放在新建目录/opt/monitor中，为方便管理，在其目录下创建ansible目录，所需要的文件，脚本都放在ansible下
cd /opt/monitor/ mikdir ansible
注，ansible后面的操作，都在/opt/monitor/ansible/目录下完成
vim /opt/monitor/ansible/hosts
[webservers] 192.168.123.171 name=web1 [dbservers] 192.168.123.172 name=db1 192.168.123.176 name=db2
“name=” 是后面需要用到的定义的变量，在这里放一百台服务器ip也行，看自己需求，分组
二， docker里面运行consul
单独下载consul太麻烦，我直接是拉去容器方式（容器安装步骤，在我另一篇博客的过程中 请点击查看
docker run --name consul -d -p 8500:8500 consul
注： consul可以部署在任何一台服务器上，只要能注册服务即可，我部署在Prometheus服务器上
检测是否部署成功 local hosts:8500
三， 准备ansible所需要的脚本，软件等
3.1 在ansible目录下准备node_exporter的tar包
可以去官网下载，也可以到我的百度网盘提取，百度网盘分享 提取码cjcj 请点击这里
3.2 用systemd来管理node_exporter
vim /opt/monitor/ansible/node_exporter.service
[Unit] Description=node_exporter [Service] ExecStart=/usr/local/node_exporter/node_exporter ExecReload=/bin/kill -HUP $MAINPID KillMode=process Restart=on-failure [Install] WantedBy=multi-user.target
3.3 准备consul服务注册脚本
vim /opt/monitor/ansible/consul_register.sh
#!/bin/bash service_name=$1 instance_id=$2 ip=$3 port=$4 curl -X PUT -d '{"id": "'"$instance_id"'","name": "'"$service_name"'","address": "'"$ip"'","port": "'"$port"'","tags": ["'"$service_name"'"],"checks": [{"http": "http://192.168.123.152:9100","interval": "5s"}]}' http://192.168.123.170:8500/v1/agent/service/register
解释：service_name 相当于Prometheus当中的job_name，相当于分组，然后脚本中tags：service_name便是consul的标签，附上图片解释一下变量
3.4 准备playbook.yml
vim /opt/monitor/ansible/playbook.yml
- hosts: webservers gather_facts: no tasks: - name: push node_exporter unarchive: src: node_exporter-1.4.0-rc.0.linux-amd64.tar.gz dest: /usr/local - name: rename shell: | cd /usr/local if [ ! -d node_exporter ] then mv node_exporter-1.4.0-rc.0.linux-amd64 node_exporter fi - name: copy systemd content copy: src: node_exporter.service dest: /usr/lib/systemd/system - name: start node_exporter systemd: name: node_exporter state: started enabled: yes daemon-reload: yes - name: push consul_register.sh copy: src: consul_register.sh dest: /usr/local/bin - name: register nodes into consul shell: /bin/bash /usr/local/bin/consul_register.sh {{ group_names[0] }} {{ name }} {{ inventory_hostname }} {{ 9100 }} - hosts: dbservers gather_facts: no tasks: - name: push node_exporter unarchive: src: node_exporter-1.4.0-rc.0.linux-amd64.tar.gz dest: /usr/local - name: rename shell: | cd /usr/local if [ ! -d node_exporter ] then mv node_exporter-1.4.0-rc.0.linux-amd64 node_exporter fi - name: copy systemd content copy: src: node_exporter.service dest: /usr/lib/systemd/system - name: start node_exporter systemd: name: node_exporter state: started enabled: yes daemon-reload: yes - name: push consul_register.sh copy: src: consul_register.sh dest: /usr/local/bin - name: register nodes into consul shell: /bin/bash /usr/local/bin/consul_register.sh {{ group_names[0] }} {{ name }} {{ inventory_hostname }} {{ 9100 }}
四， 准备Prometheus.yml的配置文件
vim /opt/monitor/prometheus/prometheus.yml
- job_name: 'webservers' consul_sd_configs: - server: 192.168.123.170:8500 services: ['webservers'] - job_name: 'dbservers' consul_sd_configs: - server: 192.168.123.170:8500 services: ['dbservers']
注意，更改配置之后 检查Prometheus的pid，然后 kill -HUP pid 来进行reload
如果担心语法有误，可以进入到Prometheus目录下，执行:
./promtool check config prometheus.yml
五， 执行playbook.yml
执行之前做免密（博客ansible部署zabbix-agent有过详细步骤，故省略，可以点击此处），或者用ansible-playbook -i hosts -uroot -k 然后输入密码来执行。不过这种输入密码可能出现以下报错
解决思路 ： vim /etc/ansible/ansible.cfg
我用的免密，然后执行：
ansible-playbook -i hosts playbook.yml
然后去检查ip:8500 和 ip:9090 去检查即可
完结撒花
