apps_prometheus.yml

- name: Deploy prometheus on LXC
  gather_facts: no
  hosts: prometheus
  connection: local
  ignore_errors: no
  vars:
    prometheus_version: "2.53.3"
  tasks:
    - name: Check config file
      stat:
        path: "./apps/prometheus/prometheus.yml"
      register: config_exists

    - name: Please create config file
      meta: end_play
      when: config_exists.stat.exists == False

    - name: Read current version
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "if [ -f /opt/prometheus/prometheus ]; then /opt/prometheus/prometheus --version | cut -d ' ' -f 3 | head -1; fi"
      register: result

    - name: Check current version
      meta: end_play
      when: result.output == prometheus_version

    - name: Use USTC mirrors
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "sed -i 's/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g' /etc/apk/repositories"

    - name: Install wget
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "apk update && apk add wget"

    - name: Create run directory
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "mkdir -p /opt/prometheus"

    - name: Download prometheus
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "wget https://github.com/prometheus/prometheus/releases/download/v{{ prometheus_version }}/prometheus-{{ prometheus_version }}.linux-amd64.tar.gz -O /tmp/prometheus.tar.gz"

    - name: Create tmp directory
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "mkdir -p /tmp/prometheus"

    - name: Extract to tmp
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "tar -xzf /tmp/prometheus.tar.gz -C /tmp/prometheus"

    - name: Backup old prometheus
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "if [ -f /opt/prometheus/prometheus ]; then mv -f /opt/prometheus/prometheus /opt/prometheus/prometheus.old; fi"

    - name: Backup old promtool
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "if [ -f /opt/prometheus/promtool ]; then mv -f /opt/prometheus/promtool /opt/prometheus/promtool.old; fi"

    - name: Move new prometheus
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "mv /tmp/prometheus/prometheus-{{ prometheus_version }}.linux-amd64/prometheus /opt/prometheus"

    - name: Move new promtool
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "mv /tmp/prometheus/prometheus-{{ prometheus_version }}.linux-amd64/promtool /opt/prometheus"

    - name: Config file
      pct:
        cmd: "push"
        host: "{{ inventory_hostname }}"
        src: "./apps/prometheus/prometheus.yml"
        dest: "/opt/prometheus/prometheus.yml"
        extra_args: "--perms 0644"

    - name: Create init.d
      pct:
        cmd: "push"
        host: "{{ inventory_hostname }}"
        src: "./apps/prometheus/init.d.sh"
        dest: "/etc/init.d/prometheus"
        extra_args: "--perms 0755"

    - name: Create Update Daemon
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "rc-update add prometheus"

    - name: Restart prometheus
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "/etc/init.d/prometheus restart"

    - name: Clean up
      pct:
        cmd: "exec"
        host: "{{ inventory_hostname }}"
        extra_args: "rm -rf /tmp/prometheus; rm -f /tmp/prometheus.tar.gz"