Ansible部署Node_exporter
本文分享自天翼云開(kāi)發(fā)者社區(qū)《Ansible部署Node_exporter》,作者:SummerSnow
一、簡(jiǎn)介
Ansible是基于Python開(kāi)發(fā)的自動(dòng)化運(yùn)維工具,集合了眾多運(yùn)維工具(puppet、cfengine、chef、func、fabric)的優(yōu)點(diǎn),實(shí)現(xiàn)了批量系統(tǒng)配置、批量程序部署、批量運(yùn)行命令等功能。
Exporter是Prometheus的指標(biāo)數(shù)據(jù)收集組件,而node_exporter就是我們常用的其中之一,它主要用于采集類UNIX內(nèi)核的硬件以及系統(tǒng)指標(biāo),如磁盤、cpu、內(nèi)存等信息。
二、環(huán)境說(shuō)明
#操作系統(tǒng)版本[root@XXXXX][~]$cat /etc/redhat-release CentOS Linux release 7.7.1908 (Core)#Ansible版本ansible 2.9.25#node-exporter版本node_exporter-1.2.2#環(huán)境說(shuō)明:本操作未涉及容器化部署,同時(shí)在centos 7環(huán)境進(jìn)行部署
三、安裝Ansible
#上傳已經(jīng)準(zhǔn)備好的的安裝包(內(nèi)網(wǎng)環(huán)境)[root@XXXXX ~] tar -zxvf ansible.tar.gz#使用下面的命令進(jìn)行安裝(yum本地安裝)[root@XXXXX ~]# yum localinstall *.rpm -y#查看ansible版本[root@XXX][~]$ansible --versionansible 2.9.25 config file = /etc/ansible/ansible.cfg configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
四、使用Ansible部署node_exporter
1)填寫需要部署的主機(jī)清單host
#如果機(jī)器之間已經(jīng)做了免密,那就去掉ansible_ssh_pass改配置,多臺(tái)機(jī)器直接追加就行[root@XXXXXX][~]$vim host[node]XX.XX ansible_ssh_user=XXX ansible_ssh_pass="XXXXXX"XX.XX ansible_ssh_user=XXX ansible_ssh_pass="XXXXXX"
2)編寫Ansible的劇本文件node_exporter.yml
--- - hosts: node gather_facts: yes become: yes become_method: sudo become_user: root tasks: - name: 添加prometheus用戶 user: name: prometheus password: "{{ 'XXXXX' | password_hash('sha512') }}" home: /home/prometheus - name: 創(chuàng)建node_exporter_script目錄 file: path: /home/prometheus/node_exporter_script state: directory mode: '0755' owner: prometheus group: prometheus - name: 創(chuàng)建node_exporter_textfile目錄 file: path: /home/prometheus/node_exporter_textfile state: directory mode: '0755' owner: prometheus group: prometheus - name: 安裝CentOS7的node_exporter unarchive: src=node_exporter-1.2.2.linux-amd64.tar.gz dest=/home/prometheus mode='0755' owner=prometheus group=prometheus when: - ansible_distribution == "CentOS" - ansible_distribution_major_version == "7" - name: 添加CentOS7的node_exporter服務(wù) copy: src=prometheus_node_exporter.service dest=/usr/lib/systemd/system/prometheus_node_exporter.service when: - ansible_distribution == "CentOS" - ansible_distribution_major_version == "7" - name: 開(kāi)啟centos7的prometheus_node_exporter服務(wù)并設(shè)置開(kāi)機(jī)自啟動(dòng) systemd: name: prometheus_node_exporter daemon_reload: yes state: restarted enabled: yes when: - ansible_distribution == "CentOS" - ansible_distribution_major_version == "7"
3)編寫node-exporter的注冊(cè)服務(wù)文件
[root@XXX][~]$vim prometheus_node_exporter.service[Unit]Description=Prometheus node_exporterRequires=network.target remote-fs.targetAfter=network.target remote-fs.target[Service]Type=simpleUser=prometheusGroup=prometheusExecStart=/home/prometheus/node_exporter-1.2.2.linux-amd64/node_exporter --collector.textfile.directory=/home/prometheus/node_exporter_textfileExecReload=/bin/kill -HUP $MAINPIDKillMode=processRestart=on-failureRestartSec=5s[Install]WantedBy=multi-user.target
4)命令執(zhí)行
[root@XXX ~]$ansible-playbook node_exporter.yml -i host
5)服務(wù)驗(yàn)證
#驗(yàn)證目標(biāo)端口是否開(kāi)啟[root@XXXXX ~]$telnet 目標(biāo)主機(jī) 9100
至此,使用Ansible部署node-exporter完成。
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