概要
Python学習でJupyterを使っており、ansibleも扱いたい
環境構築
動作環境
mac
$ uname -a ; docker --version
Darwin uni.local 20.6.0 Darwin Kernel Version 20.6.0: Wed Jun 23 00:26:31 PDT 2021; root:xnu-7195.141.2~5/RELEASE_X86_64 x86_64
Docker version 20.10.13, build a224086
jupyter(ubuntu)
$ python --version
Python 3.9.10
$ jupyter --version
Selected Jupyter core packages...
IPython : 8.2.0
ipykernel : 6.11.0
ipywidgets : 7.7.0
jupyter_client : 7.2.1
jupyter_core : 4.9.2
jupyter_server : 1.16.0
jupyterlab : 3.3.2
nbclient : 0.5.13
nbconvert : 6.4.5
nbformat : 5.2.0
notebook : 6.4.10
qtconsole : 5.3.0
traitlets : 5.1.1
Ansibleをインストールする
Installing Ansible on Ubuntu
aptでインストールする
公式手順
$ sudo apt update
$ sudo apt install software-properties-common
$ sudo add-apt-repository --yes --update ppa:ansible/ansible
$ sudo apt install ansible
バージョン確認
$ ansible --version
ansible [core 2.12.1]
config file = None
configured module search path = ['/home/jovyan/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
ansible python module location = /opt/conda/lib/python3.9/site-packages/ansible
ansible collection location = /home/jovyan/.ansible/collections:/usr/share/ansible/collections
executable location = /opt/conda/bin/ansible
python version = 3.9.10 | packaged by conda-forge | (main, Feb 1 2022, 21:24:11) [GCC 9.4.0]
jinja version = 3.1.1
libyaml = True
pingテストしてみる
pingテスト
$ ansible localhost -m ping
[WARNING]: No inventory was parsed, only implicit localhost is available
localhost | SUCCESS => {
"changed": false,
"ping": "pong"
}
簡単にテストしてみる
インベントリ、Playbookを設定
今回はcumulus linuxに対してホスト名を取得して判定するプログラムにする
- 要素
ファイル確認
$ tree
.
├── inventory
├── playbook
│ └── A01_check_cumulus_status.yml
└── roles
└── Cumulus
└── tasks
└── check_system.yml
- Inventory
invenroty
[leaf01]
172.17.0.3 ansible_user=root ansible_ssh_pass=xxxx
- Playbook
playbook/A01_check_cumulus_status.yml
---
- name: A01_Check_Status_Cumulus_Linux
hosts: leaf01
become: yes
gather_facts: no
# connection: local
environment:
PYTHONHTTPSVERIFY: 0
tasks:
- name: Set Common Vars
set_fact:
hostname: "leaf01"
- name: Check Status
import_role:
name: roles/Cumulus
tasks_from: check_system.yml
- Roles
roles/Cumulus/tasks/check_system.yml
---
- name: Fetch System Status
command: net show system json
register: _re
- name: Modify Vars1
set_fact:
re: "{{ _re.stdout | from_json }}"
- name: Mpdify Vars2
set_fact:
scc_msg: "SUCCESS: Verify hostname"
err_msg: "ERROR: Hostname is not valid"
exp_hostname: "{{ hostname }}"
var_hostname: "{{ re.hostname }}"
- name: Verify Hostname
fail:
msg: "{{err_msg}}"
when: exp_hostname != var_hostname
- debug:
msg: "{{ scc_msg }}"
- Ansible実行
オプション v でデバッグを表示させる
詳細レベルは4段階で vvvv まである
ansible実行
$ ansible-playbook -i inventory playbook/A01_check_cumulus_status.yml
[WARNING]: * Failed to parse /home/jovyan/work/ansible/inventory with script plugin: problem running /home/jovyan/work/ansible/inventory --list ([Errno 13]
Permission denied: '/home/jovyan/work/ansible/inventory')
[WARNING]: * Failed to parse /home/jovyan/work/ansible/inventory with yaml plugin: We were unable to read either as JSON nor YAML, these are the errors we
got from each: JSON: Expecting value: line 1 column 2 (char 1) Syntax Error while loading YAML. did not find expected <document start> The error appears
to be in '/home/jovyan/work/ansible/inventory': line 2, column 1, but may be elsewhere in the file depending on the exact syntax problem. The offending line
appears to be: [leaf01] 172.17.0.3 ansible_user=root ansible_ssh_pass=takePassw0rd ^ here
[WARNING]: * Failed to parse /home/jovyan/work/ansible/inventory with ini plugin: Invalid host pattern 'hostname:' supplied, ending in ':' is not allowed,
this character is reserved to provide a port.
[WARNING]: Unable to parse /home/jovyan/work/ansible/inventory as an inventory source
[WARNING]: No inventory was parsed, only implicit localhost is available
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'
PLAY [A01_Check_Status_Cumulus_Linux] *************************************************************************************************************************
TASK [Set Common Vars] ****************************************************************************************************************************************
ok: [172.17.0.3]
TASK [Cumulus : Fetch System Status] **************************************************************************************************************************
changed: [172.17.0.3]
TASK [Cumulus : Modify Vars1] *********************************************************************************************************************************
ok: [172.17.0.3]
TASK [Cumulus : Mpdify Vars2] *********************************************************************************************************************************
ok: [172.17.0.3]
TASK [Cumulus : Verify Hostname] ******************************************************************************************************************************
skipping: [172.17.0.3]
TASK [Cumulus : debug] ****************************************************************************************************************************************
ok: [172.17.0.3] => {
"msg": "SUCCESS: Verify hostname"
}
PLAY RECAP ****************************************************************************************************************************************************
172.17.0.3 : ok=5 changed=1 unreachable=0 failed=0 skipped=1 rescued=0 ignored=0
Jupyterにansible_kernelをインストールする
ansible_kernelをインストールする
ansible_kernelインストール
$ pip install ansible-kernel
$ python -m ansible_kernel.install
カーネル確認
$ jupyter kernelspec list
Available kernels:
ansible /opt/conda/share/jupyter/kernels/ansible
python3 /opt/conda/share/jupyter/kernels/python3
Jupyterでplaybook実行
- 実行イメージ
一つのファイルで実行できるのでレビューしやすそう
タスク単位で実行できて分かりやすい
-
インベントリ
行頭は #inventory -
Play
行頭は #play -
Tasks
行頭は #task
pythonとの組み合わせ
registerだけPythonに引き継げるらしい
変数は引き継げなかった
