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Ansible 批量安装 node_exporter

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Ansible 批量安装 node_exporter​

安装配置 Ansible​

配置 hosts ，并测试连通性

# 节点主机名写入hosts
echo "192.168.0.112   prome-master01" >> /etc/hosts
echo "192.168.0.127   prome-node01" >> /etc/hosts

# master上生成ssh key 并拷贝到node上
ssh-keygen
ssh-copy-id prome_node_01

# 测试ssh联通
ssh prome_node_01

Master 上安装 ansible

yum install -y ansible

# 关闭hostcheck 
vim /etc/ansible/ansible.cfg

ssh_args = -o ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking＝no

编写 playbook​

playbook执行时需要设置机器文件

cat <<EOF > /opt/tgzs/host_file
prome-master01
prome-node01
EOF

设置syslog 和logrotate服务

# 编写 yaml
vim init_syslog_logrotate.yaml

- name: init syslog logrotate
  hosts: all
  user: root
  gather_facts:  false
  vars:
      app_log_path: /opt/logs/
      sc_path: /opt/tgzs/
      syslog_conf: syslog_server.conf
      logrotate_conf: logrotate.conf

  tasks:

      - name: mkdir
        file: path={{ app_log_path }} state=directory
      

      - name: copy  files
        copy:
          src: '{{ item.src }}'
          dest: '{{ item.dest }}'
          owner: root
          group: root
          mode: 0644
          force: true

        with_items:
          - { src: '{{ sc_path }}/{{ syslog_conf }}', dest: '/etc/rsyslog.d/{{ syslog_conf }}' }
          - { src: '{{ sc_path }}/{{ logrotate_conf }}', dest: '/etc/logrotate.d/{{ logrotate_conf }}' }
        register: result

      - name: Show debug info
        debug: var=result verbosity=0

      - name: restart service

        systemd:
          name: "{{ item }}"
          state: restarted
          daemon_reload: yes
        with_items:
          - 'rsyslog'
        register: result

      - name: Show debug info
        debug: var=result verbosity=0

# 设置服务
ansible-playbook -i host_file init_syslog_logrotate.yaml

编写ansible 发布服务脚本

# 编写 deploy 脚本
vim service_deploy.yaml

- name:  install
  hosts: all
  user: root
  gather_facts:  false
  vars:
      local_path: /opt/tgzs
      app_dir: /opt/app

  tasks:
      - name: mkdir
        file: path={{ app_dir }}/{{ app }} state=directory
      - name: mkdir
        file: path={{ local_path }} state=directory

      - name: copy  config and service
        copy:
          src: '{{ item.src }}'
          dest: '{{ item.dest }}'
          owner: root
          group: root
          mode: 0644
          force: true

        with_items:
          - { src: '{{ local_path }}/{{ tgz }}', dest: '{{ local_path }}/{{ tgz }}' }
          - { src: '{{ local_path }}/{{ app }}.service', dest: '/etc/systemd/system/{{ app }}.service' }

        register: result
      - name: Show debug info 
        debug: var=result verbosity=0

      - name: tar gz
        shell: rm -rf /root/{{ app }}* ; \
          tar xf {{ local_path }}/{{ tgz }} -C /root/ ; \
          /bin/cp -far /root/{{ app }}*/* {{ app_dir }}/{{ app }}/ \

        register: result
      - name: Show debug info
        debug: var=result verbosity=0

      - name: restart service
        systemd:
          name: "{{ item }}"
          state: restarted
          daemon_reload: yes
          enabled: yes
        with_items:
          - '{{ app }}'
        register: result

      - name: Show debug info
        debug: var=result verbosity=0

# 部署服务
ansible-playbook -i host_file  service_deploy.yaml  -e "tgz=node_exporter-1.1.2.linux-amd64.tar.gz" -e "app=node_exporter"

查看结果并验证​

检查 node_exporter 服务状态

ansible -i host_file all -m shell -a " ps -ef |grep node_exporter|grep -v grep "

浏览器访问 9100/metrics

node-IP:9100/metrics
master-IP:9100/metrics