Ansible 2.0 at Ansible Meetup in Tokyo 2015.09

Transcript

1. Ansible 2.0
   @r_rudi
   एࢁ࢙࿠ (πΩϊϫגࣜձࣾ)
   

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2. ͓લͩΕΑ
   • एࢁ ࢙࿠@r_rudi / πΩϊϫגࣜձࣾ CTO
   • WebΞϓϦ։ൃ͔Βӡ༻·Ͱ
   • ීஈ͸golangͰWebΞϓϦॻ͍ͯ·͢
   • ஶॻʮೖ໳Ansibleʯ
   • Amazonʹͯൢചத(ిࢠॻ੶)
   

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3. Ansible 2.0ͱ͸
   • ࠷৽͸1.9.3 (1.9.4͕rc2)
   • 1ܥͱฏߦͯ͠2ܥ͕௕͍ؒ։ൃ͞Ε͍ͯͨ
   • গͳ͘ͱ΋ࠓ೥2݄Ҏ߱
   • ಺෦ߏ଄Λ΄΅Ұ͔Βॻ͖௚ͨ͠
   • ίʔυ໊: ”Over the Hills and Far Away” (Led Zeppelin)
   

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4. 2.0Ͱ࠷΋ॏཁͳ఺
   • ࠓ೔͸͜Ε͚ͩΛ֮͑ͯؼͬͯԼ͍͞

   • ैདྷͷplaybookͱ100%ޓ׵ੑ͕͋Γ·͢
   • طଘͷplaybookΛม͑Δඞཁ͸͋Γ·ͤΜ
   Λɺ໨ࢦ͍ͯ͠·͢
   

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5. ௥Ճػೳ
   

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6. block
   • taskΛ͞Βʹ෼ׂͰ͖·͢
   tasks:
   - block:
   - yum: name={{ item }} state=installed
   with_items:
   - httpd
   - memcached
   - template: src=templates/src.j2 dest=/etc/foo.conf
   - service: name=bar state=started enabled=True
   when: ansible_distribution == 'CentOS'
   

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7. blockʹΑΔྫ֎ॲཧ
   tasks:
   - block:
   - debug: msg='࣮ߦ͞Ε·͢'
   - fail: msg=“fail!!!”
   - debug: msg=‘Τϥʔ͕ى͖ΔͨΊɺ͜͜͸࣮ߦ͞Ε·ͤΜ'
   rescue:
   - debug: msg=‘Τϥʔ͕͓͖·ͨ͠'
   - fail: msg=“rescue಺Ͱfail!!”
   - debug: msg='͜͜΋࣮ߦ͞Ε·ͤΜ'
   always:
   - debug: msg="ඞ࣮ͣߦ͞Ε·͢"
   

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8. block಺Ͱઃఆͷ্ॻ͖
   - hosts:

   remote_user: someuser

   tasks:
   - block:
   - shell: whoami

   - shell: touch /etc/hosts

   become_user: root
   

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9. strategy plugin
   • λεΫ࣮ߦઓུΛมߋ͢Δ
   • linear: શϗετͷ࣮ߦऴྃΛ଴ͭ(v1ͱಉ͡)
   • free: ଴ͨͣʹͲΜͲΜ࣮ߦ͍ͯ͘͠
   • pluginͳͷͰɺ௥Ճ΋Մೳ
   

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10. includeͰwith͕࢖͑ΔΑ͏ʹ
    • include͸ม਺Λ্ॻ͖Ͱ͖͕ͨɺwithʹΑΔ
    ܁Γฦ͠͸Ͱ͖ͳ͔ͬͨɻ
    tasks:
    - include: foo.yml some_var={{ item }}

    with_items: [‘a’, ‘b’, ‘c’]
    

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11. include಺Ͱม਺Λ࢖͏
    • ैདྷ͸ม਺ల։͕ग़དྷͳ͔ͬͨ
    • distributionຖʹwhenΛॻ͘ΑΓߦ਺અ໿
    - include: included_{{ inventory_hostname }}.yml
    

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12. meta: refresh_inventory
    • inventoryϑΝΠϧ͸࠷ॳͷҰճ͔͠ಡΈࠐ·
    ͳ͔ͬͨ
    • dynamic inventoryͳͲͰ໰୊ʹ
    tasks: 

    - meta: refresh_inventory
    

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13. taskϨϕϧͰͷม਺
    • taskϨϕϧͰఆٛɾ্ॻ͖͕Մೳʹ
    vars:
    aa: "AA"
    tasks:
    - debug: msg="{{ aa }}"
    - debug: msg="{{ aa }}"
    vars:
    aa: “BB"
    - debug: msg="{{ aa }}”
    -> AA
    -> BB
    -> AA
    

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14. Ϟδϡʔϧ/pluginͷ௥Ճ
    • 140Ҏ্ͷ৽نϞδϡʔϧͷ௥Ճ
    • openstackɺdockerɺzabbixɺvmware…
    • inventory, connection plugin΋௥Ճ
    • serf, consul, dockerͳͲ
    • callback plugin͕ಉࠝɻansible.cfgʹॻ͚ͩ͘Ͱ༗ޮ
    Խ(callback_whitelist)
    

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15. ྫ: profile_tasks plugin
    [defaults]
    callback_whitelist = profile_tasks
    TASK [debug msg={{ aa }}] ******************************************************
    Monday 14 September 2015 16:00:20 +0900 (0:00:00.074) 0:00:00.162 ******
    ok: [localhost] => {
    "changed": false,
    "msg": "AA"
    }
    Monday 14 September 2015 16:00:20 +0900 (0:00:00.078) 0:00:00.241 ******
    ===============================================================================
    TASK: debug msg={{ aa }} ------------------------------------------------ 0.08s
    TASK: debug msg={{ aa }} ------------------------------------------------ 0.08s
    TASK: debug msg={{ aa }} ------------------------------------------------ 0.07s
    

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16. มߋ෦෼
    

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17. ಺෦ߏ଄ͷ੔ཧ
    • ม਺؅ཧ (VariableManager)
    • ैདྷม਺ͷ؅ཧʹ໰୊͕ଟ͔ͬͨ
    • ม਺ల։ͷॱং͕෼͔ΓͮΒ͔ͬͨ
    • pluginߏ଄ͷ੔ཧ
    • ܧঝߏ଄ͷ੔ཧ
    

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18. ಺෦APIͷมߋ
    • ࣗ࡞pluginʹଟগͷมߋ͕ඞཁ
    • lookup͸LookupBase classΛܧঝ͢ΔΑ͏ʹ
    • callback͸ ‘v2_’ Λ෇͚Δ
    • connection͸΄ͱΜͲͷਓ͕࡞͍ͬͯͳ͍͸ͣ
    • filter͸มߋͳ͠
    

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19. ࣗ࡞Ϟδϡʔϧ
    • Ҿ਺ͷ౉͠ํ͕มΘͬͨͷͰɺมߋ͕ඞཁʹ
    ͳΓ·͢
    • http://qiita.com/h-hirokawa/items/
    8eecd64d01ad80175179
    

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20. ࡉ͔ͳมߋ఺
    • templateͰbool΍਺஋Λจࣈܕʹม׵͍͕ͯͨ͠ɺม
    ߋ͠ͳ͍Α͏ʹ
    • ۭͷม਺ͱNoneΛۭനʹม׵͍͕ͯͨ͠ɺมߋ͠ͳ͍
    Α͏ʹ
    • jinja2ͰͷΤεέʔϓͰ \\ ͱ͍ͯͨ͠ͷΛ \ ʹ
    • YAMLϑΝΠϧதͰ > Λ࢖͍ͬͯͨ৔߹ʹ࠷ޙͷվߦ
    Λͦͷ··࢒͢Α͏ʹ
    

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21. python 3ରԠ
    • ࢒೦ͳ͕ΒೖΓ·ͤΜͰͨ͠
    • ͨͩ͠ɺ४උ͸ਐΊ͍ͯΔ༷ࢠ
    • python 3ରԠPRΛड͚ೖΕ͍ͯΔ
    

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22. ·ͱΊ
    • Ansible 2.0ɻ·ͩग़ͯ·ͤΜɻɻɻ
    • playbookͷޓ׵ੑ 100%
    • 140Ҏ্ͷϞδϡʔϧͷ௥Ճ
    • blockʹΑΔྫ֎ॲཧͷ௥Ճ
    • ࣗ࡞ͷpluginʹ͸मਖ਼͕ඞཁ
    

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23. એ఻: PythonΤϯδχΞཆ੒ಡຊ
    • Ansibleͷ࿩Λॻ͍ͯ·͢
    • 9݄17೔ʹansibleষͷಡॻձΛ΍Γ·͢
    • http://pymook.connpass.com/
    • ͋Β͔͡ΊಡΜͰ͖ͯؾʹͳͬͨ఺ɺΘ͔Βͳ͔ͬ
    ͨͱ͜ΖΛஶऀʹฉ͘ձͰ͢
    

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