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DaazKupaulfantom
DaazKu
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paulfantom
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add option to propagate binaries without access to internet (#126)
* add option to propagate binaries without access to internet Same as cloudalchemy/ansible-alertmanager#83 and cloudalchemy/ansible-prometheus#239 but for Node exporter. * Fix typo * Fix molecule/alternative/prepare.yml * Fix molecule/alternative/prepare.yml again :D * Fix _checksum not being defined * Use double quotes for consistency * Fix typo... * Fix c/p error
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‎README.md‎

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@@ -24,6 +24,7 @@ All variables which can be overridden are stored in [defaults/main.yml](defaults
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| Name | Default Value | Description |
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| -------------- | ------------- | -----------------------------------|
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| `node_exporter_version` | 0.18.1 | Node exporter package version. Also accepts latest as parameter. |
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| `node_exporter_binaries_local_dir` | "" | Allows to use local packages instead of ones distributed on github. As parameter it takes a directory where `node_exporter` binary is stored on host on which ansible is ran. This overrides `node_exporter_version` parameter |
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| `node_exporter_web_listen_address` | "0.0.0.0:9100" | Address on which node exporter will listen |
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| `node_exporter_system_group` | "node-exp" | System group used to run node_exporter |
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| `node_exporter_system_user` | "node-exp" | System user used to run node_exporter |

‎defaults/main.yml‎

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---
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node_exporter_version: 0.18.1
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node_exporter_binary_local_dir: ""
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node_exporter_web_listen_address: "0.0.0.0:9100"
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node_exporter_system_group: "node-exp"

‎molecule/alternative/playbook.yml‎

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roles:
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- ansible-node-exporter
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vars:
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node_exporter_binary_local_dir: "/tmp/node_exporter-linux-amd64"
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node_exporter_system_group: "root"
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node_exporter_system_user: "root"
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node_exporter_textfile_dir: ""

‎molecule/alternative/prepare.yml‎

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@@ -1,5 +1,37 @@
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---
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- name: Prepare
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hosts: all
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hosts: localhost
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gather_facts: false
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tasks: []
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vars:
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go_arch: amd64
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node_exporter_version: 0.18.1
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tasks:
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- name: Download node_exporter binary to local folder
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become: false
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get_url:
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url: "https://github.com/prometheus/node_exporter/releases/download/v{{ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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dest: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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register: _download_binary
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until: _download_binary is succeeded
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retries: 5
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delay: 2
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run_once: true
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check_mode: false
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- name: Unpack node_exporter binary
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become: false
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unarchive:
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src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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dest: "/tmp"
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creates: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}/node_exporter"
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run_once: true
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check_mode: false
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- name: link to node_exporter binaries directory
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become: false
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file:
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src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-amd64"
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dest: "/tmp/node_exporter-linux-amd64"
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state: link
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run_once: true
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check_mode: false

‎tasks/install.yml‎

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@@ -27,34 +27,46 @@
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home: /
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when: node_exporter_system_user != "root"
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- name: Download node_exporter binary to local folder
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become: false
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get_url:
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url: "https://github.com/prometheus/node_exporter/releases/download/v{{ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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dest: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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checksum: "sha256:{{ node_exporter_checksum }}"
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register: _download_binary
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until: _download_binary is succeeded
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retries: 5
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delay: 2
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delegate_to: localhost
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check_mode: false
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- block:
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- name: Download node_exporter binary to local folder
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become: false
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get_url:
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url: "https://github.com/prometheus/node_exporter/releases/download/v{{ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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dest: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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checksum: "sha256:{{ node_exporter_checksum }}"
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register: _download_binary
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until: _download_binary is succeeded
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retries: 5
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delay: 2
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delegate_to: localhost
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check_mode: false
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- name: Unpack node_exporter binary
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become: false
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unarchive:
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src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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dest: "/tmp"
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creates: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}/node_exporter"
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delegate_to: localhost
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check_mode: false
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- name: Unpack node_exporter binary
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become: false
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unarchive:
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src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}.tar.gz"
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dest: "/tmp"
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creates: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}/node_exporter"
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delegate_to: localhost
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check_mode: false
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- name: Propagate node_exporter binaries
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copy:
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src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}/node_exporter"
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dest: "/usr/local/bin/node_exporter"
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mode: 0755
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owner: root
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group: root
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notify: restart node_exporter
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when: not ansible_check_mode
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when: node_exporter_binary_local_dir | length == 0
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- name: Propagate node_exporter binaries
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- name: propagate locally distributed node_exporter binary
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copy:
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src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-{{ go_arch }}/node_exporter"
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src: "{{ node_exporter_binary_local_dir }}/node_exporter"
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dest: "/usr/local/bin/node_exporter"
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mode: 0755
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owner: root
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group: root
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when: node_exporter_binary_local_dir | length > 0
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notify: restart node_exporter
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when: not ansible_check_mode

‎tasks/preflight.yml‎

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- name: "Set node_exporter version to {{ _latest_release.json.tag_name[1:] }}"
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set_fact:
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node_exporter_version: "{{ _latest_release.json.tag_name[1:] }}"
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when: node_exporter_version == "latest"
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when:
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- node_exporter_version == "latest"
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- node_exporter_binary_local_dir | length == 0
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delegate_to: localhost
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run_once: true
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- name: Get checksum list from github
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set_fact:
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_checksums: "{{ lookup('url', 'https://github.com/prometheus/node_exporter/releases/download/v' + node_exporter_version + '/sha256sums.txt', wantlist=True) | list }}"
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run_once: true
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- block:
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- name: Get checksum list from github
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set_fact:
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_checksums: "{{ lookup('url', 'https://github.com/prometheus/node_exporter/releases/download/v' + node_exporter_version + '/sha256sums.txt', wantlist=True) | list }}"
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run_once: true
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- name: "Get checksum for {{ go_arch }} architecture"
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set_fact:
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node_exporter_checksum: "{{ item.split(' ')[0] }}"
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with_items: "{{ _checksums }}"
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when: "('linux-' + go_arch + '.tar.gz') in item"
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- name: "Get checksum for {{ go_arch }} architecture"
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set_fact:
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node_exporter_checksum: "{{ item.split(' ')[0] }}"
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with_items: "{{ _checksums }}"
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when:
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- "('linux-' + go_arch + '.tar.gz') in item"
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when: node_exporter_binary_local_dir | length == 0

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