Consul KV Dashboard

monitoring casual #7

Transcript

1. Consul KV Dashboard
   Monitoring Casual #7
   @fujiwara
   

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2. Chef, Serverspec, Deploy, etc...
   ֤ϗετͰ࣮ߦͨ݁͠ՌΛ֬ೝ͍ͨ͠΋ͷ͍Ζ͍Ζ
   • chef (--why-run)
   • serverspec
   • rsync -av ͷ log
   

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3. IRCʹ௨஌͠Α͏
   parallel, cap, ... ͷग़ྗ݁ՌΛ…
   ࣾ಺༻ nopaste-cli command
   $ cat foo.log | nopaste-cli -channel "hoge" -summary "foo done!"
   nopasteʹPOSTͱಉ࣌ʹIRCʹURL͕௨஌͞ΕΔ
   શ୆෼·ͱΊΔͱࣦࠞͬͯ͡ഊͨ͠ͷ͕෼͔ΓͮΒ͍
   ؅ཧϗετ͔ΒpushͰͳ͍ܗଶ(consul event)Ͱ͸औಘͰ͖ͳ͍
   

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4. ֤ϗετ͔ΒͦΕͧΕIRC௨஌
   ϗετ୆਺͕ൺֱతগ਺(ʙ10୆ఔ౓)ͳΒ໰୊ͳ͍
   ࠓ࣌1ϗετͷੑೳ͕ߴ͍ͷͰɺͦ͜·Ͱ୆਺͸૿͑ͳ͍
   ௨஌͕͏Δ͚͞Ε͹ɺࣦഊͨ͠΋ͷ͚ͩૹΕ͹ok
   

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5. αʔϏεͷن໛֦େ
   ʙ50୆ͱ͔
   ࣦഊ࣌ͷΈૹΔͱͯ͠΋IRCʹઇ่͕ى͖Δ
   Ͳ͔͜ͰҰཡͯ͠ݟ͍ͨʂ
   (ઌि·Ͱίί)
   

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6. Consul KV Dashboard
   ͭͬͨ͘
   github.com/fujiwara/consul-kv-dashboard
   

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7. Consul KV Dashboard
   Consul KVS ΛσʔλετΞʹͨ͠ϦΞϧλΠϜμογϡϘʔυ
   Πϕϯτ಺༰Λ Consul REST API Ͱอଘ
   ͦΕΛ͍͍ײ͡ʹݟͤͯ͘ΕΔ wep application
   Go (API Server) + React.js (View)
   [Demo]
   

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8. σʔλొ࿥
   Consul REST APIͰ௚઀ૹΔ
   $ curl -X PUT -d "message" \
   localhost:8500/v1/kv/dashboard/example/myhostname?flags=1422607461000
   

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9. keyߏ଄
   /v1/kv/dashboard/{category}/{nodename}?
   flags={timestamp * 1000 + status}
   • category: chef, serverspec, deploy...
   • nodename: ConsulͰࣝผ͍ͯ͠Δϊʔυ໊
   • flags: ࣌ࠁͷunix time * 1000 + status
   • status: 0=success 1=warning 2=danger 3=info
   

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10. ϦΞϧλΠϜߋ৽ͷ࣮ݱํ๏
    ConsulͷϒϩοΩϯάΫΤϦΛ࢖͏
    www.consul.io/docs/agent/http.html
    $ curl -i localhost:8500/v1/kv/dashboard/chef/myhost?recurese
    HTTP/1.1 200 OK
    Content-Type: application/json
    X-Consul-Index: 261975
    [{"CreateIndex":261891,"ModifyIndex":261975,"LockIndex":0,
    "Key":"dashboard/chef/myhost","Flags":1422602855000,"Value":".....
    

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11. ϒϩοΩϯάΫΤϦ
    Ϩεϙϯεϔομͷ X-Consul-Index Λ index ʹࢦఆ͢Δ
    $ curl -i localhost:8500/v1/kv/dashboard/chef/myhost?index=261975
    indexΑΓ৽͍͠σʔλ͕ൃੜ͢Δ·ͰϨεϙϯε͕஗Ԇ
    ৽͍͠σʔλ͕ൃੜ͢ΔͱϨεϙϯε͕ฦΔ
    ͍ΘΏΔ Long pooling
    

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12. consul-kv-dashboard ͕΍Δ͜ͱ
    HTML, CSS, JavaScriptΛ഑෍
    • go-bindataͰ·ͱΊͨϑΝΠϧΛhttp.FileServerͰ഑৴͢Δ
    qiita.com/sfujiwara/items/b84cc2a7b326b04e0edb
    • όΠφϦҰݸͰ੩తϑΝΠϧ΋഑৴Ͱ͖Δ
    

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13. consul-kv-dashboard ͕΍Δ͜ͱ
    Consul REST API ΁ͷ proxy
    • /api/... → localhost:8500/v1/kv/dashboard/...
    • ϨεϙϯεͷJSONΛΫϥΠΞϯτ͕ѻ͍΍͍͢Α͏ʹ੔ܗ
    • {"Flags":1422608524001}
    → {"timestamp":"2015-01-30 18:02:04
    +0900","status":"warning"}
    View ͸ React.js
    

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14. ࠓޙ
    શମͷstatus͕มԽͨ͠ΒτϦΨʔ(֎෦ίϚϯυ࣮ߦͱ͔
    

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