CockroachDBって何 / What is CockroachDB

Transcript

1. Fukuoka.go#15 with Kagoshima Gophers Tomohisa Oda / Mar 2, 2020

   What is
   CockroachDB

2. Fukuoka.go#15 with Kagoshima Gophers @linyows blog: tomohisaoda.com affiliation: GMO pepabo,

   inc.

3. Fukuoka.go#15 with Kagoshima Gophers Private Projects ΞϓϦέʔγϣϯࣗ਎͕ϦϙδτϦ͔Β࠷৽ͷίʔυΛݕ ஌ͯࣗ͠ಈͰσϓϩΠͱσϦόϦʔΛߦ͏πʔϧ MJOVYͷVTFS໊લղܾΛ(JU)VCͷ5FBNϝϯόʔ΍Ϧϙδτ ϦͷΞΫηεݖݶऀ͔Βߦ͏πʔϧ

4. Fukuoka.go#15 with Kagoshima Gophers ͓࿳ͼ
   "CockroachDBίʔυϦʔσΟϯά"͸
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   "CockroachDBͬͯԿ" ʹͳΓ·ͨ͠ɻ

5. Fukuoka.go#15 with Kagoshima Gophers CockroachDBͱ͸

6. Fukuoka.go#15 with Kagoshima Gophers ๏ ஍ཧత෼ࢄ42-σʔλϕʔε
   ๏ 3%#ͱ/P42-ͷਐԽܥͰ͋Δ/FX42-
   ๏ ࣗಈ'BJMPWFSͱࣗಈ3FQBJS
   

   ๏ .VMUJ
   "DUJWFͳՄ༻ੑ
   ๏ 1PTUHSF42-ޓ׵ͰطଘͷυϥΠό͕࢖༻Ͱ͖Δ CockroachDB

7. Fukuoka.go#15 with Kagoshima Gophers

8. Fukuoka.go#15 with Kagoshima Gophers Design ਫฏͷεέʔϥϏϦςΟ
   ๏ ࿦ཧతʹ͸ແݶʹ૿΍ͤΔ
   ๏ ΫΤϦ෼ࢄͰ୯ҰΫΤϦΛશମత

   εϧʔϓοτ޲্ ߴ͍ੜଘੑ
   ๏ Ϛγϯ෼ࢄɺϥοΫ෼ࢄɺ஍ཧత ෼ࢄ
   ๏ ࣗݾम෮ɺࣗݾෛՙόϥϯγϯά ڧ͍Ұ؏ੑ
   ๏ ߹ҙϕʔεͷϨϓϦέʔγϣϯ
   ๏ "$*%ηϚϯςΟΫεΛຬͨ͢෼ ࢄτϥϯβΫγϣϯ

9. Fukuoka.go#15 with Kagoshima Gophers ๏ 42-
   *OUFSGBDF͕ͩத਎͸෼ࢄ,74UPSF
   -FWFM%#ͷϑΥʔΫ3PDLT%#
   ๏ ςʔϒϧΛ3BOHFͱ͍͏.#Ҏ಺ͷαΠζʹͨ͠୯ҐͰ෼ׂ
   

   ๏ 3BOHF͕ϨϓϦέʔγϣϯͷ୯ҐͰ/PEFؒͰ4IBSEJOH͢Δ
   ๏ ϨϓϦέʔγϣϯ͸3BGUΞϧΰϦζϜͰߦ͍ɺ5SJQMJDBUFEʢ̏ॏʣߦ͑Δ
   ๏ ϨϓϦΧͷ૯਺/
   
   '
   
   ͱ͢Δͱ࠷େ'ݸͷো֐ʹ଱͑Δ Architecture

10. Fukuoka.go#15 with Kagoshima Gophers SQL Transactional Distribution Replication Storage Client

    Foo : ID = [1, 51] Foo : ID = [51, 103] … Table Foo Index FooIdx Table Bar … Node1 Node2 Node3 Node4 64M Ranges Range Index 64M

11. Fukuoka.go#15 with Kagoshima Gophers CockroachDB͕΍ͬͯ͘ΕΔ͜ͱ

12. Fukuoka.go#15 with Kagoshima Gophers ReplicasͷϦόϥϯγϯά
    ۉҰԽ $MVTUFSʹ/PEFΛ৽͘͠௥Ճ͢Δ $PDLSPBDI%#͸3BOHFΛ഑ஔ͢Δ $PDLSPBDI%#͸$MVTUFSΛۉ౳ʹ͢Δ

13. Fukuoka.go#15 with Kagoshima Gophers ReplicasͷϦόϥϯγϯά
    म෮ ো֐͕ൃੜ͠/PEFΛফࣦ͢Δ $PDLSPBDI%#͸3FQMJDBͷܽམΛೝࣝͯ͠
    "DUJWF
    /PEF্ʹϨϓϦΧΛஔ͖׵͑Δ ো֐͕Ұ࣌తͰ/PEF͕෮ؼͨ͠Β
    -FBTIPMEFSͱݺ͹ΕΔ3BGU
    -FBEFS͕
    

    ϨϓϦΧΛΩϟονΞοϓ͢Δ

14. Fukuoka.go#15 with Kagoshima Gophers ๏ 51$$ϕϯνϚʔΫʹ͓͍ͯ"NB[PO
    "VSPSB ͱൺֱ͢Δͱഒͷεϧʔϓοτ͕͋Δ
    ๏ ͜ͷεϧʔϓοτ͸51$$ϥϯΩϯάͰ൪ ໨ʹେ͖͍
    

    ๏ ,7 SFBE
    XSJUF Ͱ/PEF਺ͷ૿Ճʹ ΑͬͯτϥϯβΫγϣϯͷॲཧೳྗ͕ઢܗʹ ޲্͍ͯ͘͜͠ͱ͕Θ͔͍ͬͯΔ
    ๏ $PDLSPBDI%#ʹ͸ཧ࿦্ͷεέʔϦϯά੍ ݶ͸ͳ͍ͱͷ͜ͱ Performance

15. Fukuoka.go#15 with Kagoshima Gophers CockroachDBͷ࣮૷

16. Fukuoka.go#15 with Kagoshima Gophers ๏ (P
    
    Ҏ্͸ඇਪ঑
    
    ๏

    $
    DPNQJMFS͕ඞཁ
    3PDLT%#΍$SZQUP ɺ,FSCFSPTɺ4OBQQZͳͲʹґଘ
    ๏ (Pͷσ ΟϨΫτϦߏ੒͸ࢸͬͯී௨
    QLH
    ʹ࣮૷͕͋Δ
    ๏ ֎෦QLH͸ఔͳͷͰن໛తʹґଘ͕গͳ͍Α͏ʹݟ͑Δ
    https://github.com/cockroachdb/cockroach ࣮૷ʹ͍ͭͯ $ tree pkg | grep .go | grep -v test.go | wc -l 2405 // ͜ͷϑΝΠϧ਺ͰίʔυϦʔσΟϯά͢Δؾ͕ͳ͘ͳͬͨ $ grep 'name =' Gopkg.toml | grep -v golang | grep -v cockroach | wc -l 20

17. Fukuoka.go#15 with Kagoshima Gophers CockroachDBΛ͞ΘͬͯΈΔ

18. Fukuoka.go#15 with Kagoshima Gophers ๏ IFMNͰ$PDLSPBDI%#ΫϥελΛ࡞੒
    4UBUFGVM4FUͷͭͷ1PE͕ىಈ
    helm install

    my-release --values my-values.yaml stable/cockroachdb kubectl get csr ๏ $PDLSPBDI%#ϊʔυͷূ໌ॻʹॺ໊͢ΔͨΊͷ$43Λঝೝ
    kubectl certificate approve default.node.my-release-cockroachdb-0 kubectl certificate approve default.client.root kubectl get pv ๏ #VJMUJO
    $MJFOUͷ४උ
    kubectl create -f client-secure.yaml kubectl exec -it cockroachdb-client-secure -- ./cockroach sql --certs-dir=/cockroach-certs —host=my-release-cockroachdb-public https://www.cockroachlabs.com/docs/stable/orchestrate-a-local-cluster-with-kubernetes.html KubernetesΛ࢖ͬͯDemo: ४උ

19. Fukuoka.go#15 with Kagoshima Gophers ๏ 42-ͷ࣮ߦ
    CREATE DATABASE bank; CREATE

    TABLE bank.accounts (id INT PRIMARY KEY, balance DECIMAL); INSERT INTO bank.accounts VALUES (1, 1000.50); SELECT * FROM bank.accounts; CREATE USER roach WITH PASSWORD 'Q7gc8rEdS'; INSERT INTO system.role_members (role, member, "isAdmin") VALUES ('admin', 'roach', true); ๏ ίϯιʔϧϩάΠϯ
    kubectl port-forward my-release-cockroachdb-0 8080 ๏ /PEF
    'BJMPWFSɺ/PEFͷ௥Ճɺ࡟আ
    kubectl delete pod my-release-cockroachdb-2 helm upgrade my-release stable/cockroachdb --set statefulset.replicas=4 —reuse-values kubectl certificate approve default.node.my-release-cockroachdb-3 kubectl exec -it cockroachdb-client-secure -- ./cockroach node status --certs-dir=/cockroach-certs —host=my-release-cockroachdb-public kubectl exec -it cockroachdb-client-secure -- ./cockroach node decommission 2 --certs-dir=/cockroach-certs —host=my-release-cockroachdb-public helm upgrade my-release stable/cockroachdb --set statefulset.replicas=3 --reuse-values https://www.cockroachlabs.com/docs/stable/orchestrate-a-local-cluster-with-kubernetes.html KubernetesΛ࢖ͬͯDemo: ૢ࡞

20. Fukuoka.go#15 with Kagoshima Gophers add node to cluster delete a

    pod

21. Fukuoka.go#15 with Kagoshima Gophers ๏ IUUQTHJUIVCDPNDPDLSPBDIECDPDLSPBDICMPCNBTUFSEPDTEFTJHONE
    ๏ IUUQTXXXDPDLSPBDIMBCTDPNEPDTTUBCMFBSDIJUFDUVSFPWFSWJFXIUNM
    ๏ IUUQTXXXDPDLSPBDIMBCTDPNEPDTTUBCMFDPDLSPBDIECJODPNQBSJTPOIUNM
    

    ๏ IUUQTXXXDPDLSPBDIMBCTDPNEPDTTUBCMFNVMUJBDUJWFBWBJMBCJMJUZIUNM
    ๏ IUUQTXXXDPDLSPBDIMBCTDPNCMPHMJNJUTPGUIFDBQUIFPSFN
    ๏ IUUQTXXXJOGPRDPNQSFTFOUBUJPOTDPDLSPBDIECEJTUSJCVUFETRM
    ๏ IUUQTXXXDPDLSPBDIMBCTDPNCMPHUQDDL
    ๏ IUUQTXXXDPDLSPBDIMBCTDPNEPDTTUBCMFPSDIFTUSBUFBMPDBMDMVTUFSXJUILVCFSOFUFTIUNM References

22. Fukuoka.go#15 with Kagoshima Gophers Thank you
    aʕ⊙౪⚆ʔ