今さらだけど、group_varsとhost_varsについて一言言いたい

https://ansible-users.connpass.com/event/109717/
こちらでのLT資料です

Transcript

1. ࠓ͞Β͚ͩͲɺ group_varsͱhost_vars ʹ͍ͭͯҰݴݴ͍͍ͨ 2018.12.6 Ansible Night in Tokyo 2018.12 ү෦ஐ඙(@isobecky74)
2. Who am I ? • ү෦ ஐ඙ (Tomohiko Isobe) • twitter,Qiita: @isobecky74 • Infrastructure EngineerˏΫϦχΧϧɾϓϥοτϑΥʔϜגࣜձࣾ • ౡࠜݝग़਎ • Job Hopperʢݱࡏ8ࣾ໨wʣ • Favorites: ࢙੻ɾઓ੻Ί͙ΓɺϑΝϛϨε • Favorite Ansible Modules: template, AWSܥ https://clipla.jp
3. Introduction
4. 2018೥๭݄๭೔
5. Ansible2.3 -> 2.4ʹUpgrade
6. ͍ͦͯͭ͠΋ͷΑ͏ʹ ansible-playbook࣮ߦ
7. "VARIABLE IS NOT DEFINED!"
8. Ίͪΐͬ͘ʂ(ƅЧƅ) ※ΊͬͪΌγϣοΫͷҙ
9. group_varsͱhost_vars͕ ͏·͘ಡΈࠐΊͯͳ͍ͩͱ…ʁ
10. ͱݴ͏Θ͚Ͱɺ
11. ֤όʔδϣϯͰͷ group_vars/host_varsͷ ಡΈࠐΈڍಈʹ͍ͭͯ ௐ΂ͯΈͨ
12. ެࣜυΩϡϝϯτʹΑΔͱ "Similar functionality can still be achieved by using vars_files, include_vars, or group_vars and host_vars placed relative to the inventory file." ver2.4ͰɺΠϯϕϯτϦϑΝΠϧ͔Βͷ૬ରύε ʹͳͬͨΒ͍͠ https://docs.ansible.com/ansible/devel/porting_guides/porting_guide_2.4.html#initial- playbook-relative-group-vars-and-host-vars
13. ໰୊ͷൃੜͨ͠σΟϨΫτϦߏ੒ ؀ڥ͝ͱʹΠϯϕϯτϦΛ෼͚͍ͯ ͨͷͰɺΠϯϕϯτϦϑΝΠϧΛ
    αϒσΟϨΫτϦʹ֨ೲ͍ͯͨ͠
14. Ansible2.3·Ͱ͸ ى఺ͱͳΔQMBZCPPL
    TJUFZNM͔Βͷ૬ରύε ͕͜͜ಡΈࠐ·ΕΔ
15. Ansible2.4͔Β͸ ΠϯϕϯτϦϑΝΠϧ͔Βͷ
    ૬ରύε ͜͜ʹHSPVQ@WBSTIPTU@WBSTσΟ ϨΫτϦ͕ͳ͍ͱ͍͚ͳ͍
16. ݕূͯ͠ΈΔ
17. ݕূํ๏ • ᶃsite.ymlͱಉ͡֊૚ʹΠϯϕϯτϦϑΝΠϧͱgroup_vars/ host_varsσΟϨΫτϦΛஔ͘ύλʔϯͱɺᶄαϒσΟϨΫτϦʹΠ ϯϕϯτϦϑΝΠϧͱgroup_vars/host_varsσΟϨΫτϦΛஔ͘ύ λʔϯΛಉډͤ͞ɺͦΕͧΕʹॻ͍ͨม਺͕όʔδϣϯʹΑͬͯͲ ͏ಡΈࠐ·ΕΔ͔ࢼͯ͠ΈΔ • ͦΕͧΕͷม਺ʹ͸ͲͷϑΝΠϧ͔ΒಡΈࠐ·Ε͔͕ͨΘ͔ΔΑ͏ ʹɺࣗ਎ͷύεΛॻ͍͓ͯ͘ • debugϞδϡʔϧʹͯgroup_varsͱhost_varsͰಡΈࠐΜͩ஋Λදࣔ
18. σΟϨΫτϦߏ੒ ݕূ؀ڥ ᶃΠϯϕϯτϦϑΝΠϧΛ
    TJUFZNMͱಉ͡֊૚ʹ
    ഑ஔ͢Δύλʔϯ
19. σΟϨΫτϦߏ੒ ݕূ؀ڥ ᶄΠϯϕϯτϦϑΝΠϧΛ
    αϒσΟϨΫτϦʹ
    ഑ஔ͢Δύλʔϯ
20. ΠϯϕϯτϦ ݕূ؀ڥ MPDBMIPTUΛ
    άϧʔϓʮHSPVQʯ
    ϗετʮIPTUʯ
    ͱͯ͠ఆٛ
21. group_vars/host_vars playbook ݕূ؀ڥ ͦΕͧΕͷHSPVQ@WBSTIPTU@WBST ͷ஋ʹ͸ࣗ਎ͷύεΛࢦఆ
22. site.ymlͱಉ͡֊૚ʹΠϯϕϯτϦϑΝΠϧͱ group_vars/host_varsσΟϨΫτϦΛஔ͘ύλʔϯ ver2.3 ݕূᶃ TJUFZNMͱಉ͡֊૚ͷ
    HSPVQ@WBSTIPTU@WBST͕
    ಡΈࠐ·Εͨ
23. site.ymlͱಉ͡֊૚ʹΠϯϕϯτϦϑΝΠϧͱ group_vars/host_varsσΟϨΫτϦΛஔ͘ύλʔϯ ver2.4 - 2.7 ݕূᶃ TJUFZNMͱಉ͡֊૚ͷ
    HSPVQ@WBSTIPTU@WBST͕
    ಡΈࠐ·Εͨ ݁ՌతʹWFSͱಉ͡ڍಈ
24. αϒσΟϨΫτϦʹΠϯϕϯτϦϑΝΠϧͱ group_vars/host_varsσΟϨΫτϦΛஔ͘ύλʔϯ ver2.3 ݕূᶄ TJUFZNMͱಉ͡֊૚ͷ
    HSPVQ@WBSTIPTU@WBST͕
    ಡΈࠐ·Εͨ ΠϯϕϯτϦϑΝΠϧͷ
    ύε͸ແؔ܎
25. αϒσΟϨΫτϦʹΠϯϕϯτϦϑΝΠϧͱ group_vars/host_varsσΟϨΫτϦΛஔ͘ύλʔϯ ver2.4-2.7 ݕূᶄ ࢲ͕ϋϚͬͨͷ͸͜Ε͕ݪҼ ΠϯϕϯτϦϑΝΠϧͱ
    ಉ͡֊૚ͷ
    HSPVQ@WBSTIPTU@WBST͕
    ಡΈࠐ·Εͨ
26. φϧϗυ
27. ͱ͜ΖͰɺ group_vars/host_vars ʹ͍ͭͯௐ΂͍ͯͨΒ
28. ͜Μͳ৘ใ͕ "As an advanced use case, you can create directories named after your groups or hosts, and Ansible will read all the files in these directories in lexicographical order." άϧʔϓ໊/ϗετ໊ͷσΟϨΫτϦ഑ԼͷϑΝΠϧ ΋ಡΈࠐΉͱͷ͜ͱ https://docs.ansible.com/ansible/latest/user_guide/intro_inventory.html#splitting-out-host-and- group-specific-data
29. ॳࣖ
30. ͍ͭͰʹݕূͯ͠ΈΔ
31. σΟϨΫτϦߏ੒ ݕূ؀ڥ HSPVQ@WBSTIPTU@WBSTσΟϨΫ τϦʹαϒσΟϨΫτϦ࡞੒
    αϒσΟϨΫτϦ໊͸άϧʔϓ໊ ϗετ໊ͱಉ͡ʹ͢Δ
    ഑ԼͷϑΝΠϧ໊͸೚ҙ
    
32. group_vars/host_varsʹάϧʔϓ໊/ϗετ໊ͷαϒ σΟϨΫτϦΛஔ͍ͯΈΔ ݕূᶅ HSPVQ@WBSTIPTU@WBSTͷαϒσΟ ϨΫτϦʹ͋ΔϑΝΠϧ͕
    ಡΈࠐ·Εͨ
33. group_vars/host_varsʹάϧʔϓ໊/ϗετ໊ͷαϒ σΟϨΫτϦ͕ͳ͍ͱ ݕূᶆ HSPVQ@WBSTIPTU@WBSTͷ
    ϑΝΠϧ͕ಡΈࠐ·Εͨ αϒσΟϨΫτϦ͕༏ઌ͞ΕΔ
34. φϧϗυ
35. ·ͱΊ
36. ·ͱΊᶃ • Ansible2.3->2.4Ͱgroup_vars/host_varsͷࢀরύε͕ มΘͬͨ • ver2.3 -> ى఺ͱͳΔplaybook(site.yml)͔Βͷ૬ର ύε • ver2.4ʙ -> ΠϯϕϯτϦϑΝΠϧ͔Βͷ૬ରύε • ver2.4 - 2.7·Ͱมߋͳ͠
37. ·ͱΊᶄ • group_vars/host_varsσΟϨΫτϦʹάϧʔϓ໊/ϗετ໊ ͷαϒϑΥϧμΛ࡞Γɺͦ͜ʹஔ͍ͨϑΝΠϧͰఆٛͨ͠ ม਺ΛಡΈࠐ·ͤΔ͜ͱ͕Ͱ͖Δ • ϑΝΠϧ໊͸೚ҙɻෳ਺ϑΝΠϧ΋OK • Ansible VaultͰ҉߸Խ͢Δม਺ΛผϑΝΠϧʹ෼ׂ͢Δ ͱ͍͍͔΋ • ver2.3Ҏ߱શόʔδϣϯରԠ
38. ͜ΕͰҰؾʹver2.7·Ͱ Upgrade... ͳΜ͔ߦ͚Δؾ͕͢Δʂ
39. એ఻ • ࠓճͷݕূʹ͍ͭͯͷৄࡉ • https://qiita.com/isobecky74/items/86bd1a18afe1f556656d
40. એ఻ • ଞʹ΋Ansibleωλॻ͍ͯ·͢ • https://qiita.com/isobecky74
41. Thank you !