利用Ansible Playbook批量部署node_exporter

之前有翻译过一系列Grafana配置Graphite的文章。传送门

在用过Prometheus之后,发现Prometheus配合Grafana也是天造的一对,以设的一双。

对于服务器基础指标监控而言,Prometheus通过node_exporter来收集数据做为数据源,提供了各种与硬件和内核相关的详细指标。

下面分享一个我正在使用的Ansible Playbook,用于批量部署node_exporter到多个目标主机。

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- hosts: yourservers
user: root
gather_facts: false
vars:
- user: "prometheus"
- group: "prometheus"
- node_exporter_package: "node_exporter-0.16.0.linux-amd64"

tasks:
- group: name={{ group}} state=present

- name: Add user prometheus
user: name={{ user }} shell=/sbin/nologin

- file: path=/usr/local/prometheus owner={{ user}} group={{ group }} mode=750 state=directory

- name: Sync files
copy: src={{ item.src }} dest={{ item.dest }} owner={{ user}} group={{ group }}
with_items:
- {src: "node_exporter.service", dest: "/usr/lib/systemd/system"}

- name: Unpack package
unarchive: src={{ node_exporter_package }}.tar.gz dest=/usr/local/prometheus owner={{ user }} group={{ group }} creates=/usr/local/prometheus/node_exporter

- name: Rename the path
command: mv /usr/local/prometheus/{{ node_exporter_package }} /usr/local/prometheus/node_exporter creates=/usr/local/prometheus/node_exporter

- file: path=/usr/local/prometheus/node_exporter owner={{ user}} group={{ group }} mode=750

- name: Start service prometheus, if not running
service:
name: node_exporter.service
state: started

注意:软件采用的是提前下载至本地然后同步到目标主机的方式,也是线上部署最为稳妥的方式。

Grafana美图赏析:
Grafana Screenshot

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