Kubernetes의 기초를 텍스트로 빠르게 설명합니다.

1. Kubernetes
asbubam

2. K8s = K(ubernete)s

3. Kubernetes
(Docker) Container Orchestration

4. Docker .

5. .

6. docker-compose

7. .

8. .
= .

11. .
stateless, immutable,
mortal ( ,
, ) .

12. mortal ( )
!

13.
.

14. Container Orchestration

15. AWS ECS

16. AWS ECS

20. ,
.
.

21. Kubernetes

22. Desired state

23. .
.
.

24. Cluster

25. K8s EC2

26. EC2 (Node)

27. : .
:

28. Node(EC2) Cluster
( ) ( )

29.
.

30. RDS IAM Role
Node(EC2) .

31. CPU
Node(EC2) CPU
.

32. ( )
, (desired state)
,
/ ,
/
/

33. / /
.

34. Kubernetes is an open-source platform
designed to automate deploying, scaling,
and operating application containers.
Kubernetes
, ,
.

35. Docker Swarm, Nomad,
Mesosphere, Marathon, AWS ECS

36. Kubernetes
.

37. 10
Borg

38. Borg
Kubernetes . 2014
Pod, Service, Label Borg

39. Kubernetes
Helmsman
Kubernetes Helm

40. 2016 CNCF
(Cloud Native Computing Foundation)
Prometheus, gRPC, Open Tracing, Flunted,
Envoy

41. 100%
Golang

42. …

43. Kubernetes

44. Automatic binpacking

45. Self-healing

46. Horizontal scaling

47. Service Discovery
& Load Balancing

48. Automated
rollout & rollback

49. Secret
& ConfigMap

50. Batch Execution

51. Storage Orchestration
EBS, EKS, NFS, Ceph,

52. Kubernetes

53. Kubernetes
…
.

54. Pod

55. Pod
K8s

56. Pod
K8s Pod
Container

57. Pod
2

58. Pod
1 (Node)

59. Pod
Pause ( )
Pause
Namespace
Namespace localhost

60. Linux Namespace
.
Namespace IPC, Network,
PID, File System .
Namespace .

61. Pod
Cluster IP
.
Pod Mortal ( )
Pod
Pod
Service (end point) .

62. ReplicaSet
Pod .
1 Pod
1 Node
Pod
Node .

63. Kubernetes

64. from https://en.wikipedia.org/wiki/Kubernetes

65. Master
Node ( minion)

66. Master

67. Node Master( )

68. ( ) (
) Node .

69. Master …
APIServer
Controller Manager
Scheduler
etc

70. API Server
(REST) API
API Server .
(kubectl, etcd )

71. Controller Manager
Pod ( ( ) )

72. Scheduler
Pod Node
( Node , .)

73. etcd
/

74. Node

75. Node
Kublet
cAdvisor
Kube-Proxy

76. Kublet
Node Master
…

77. Kublet
Node Master
…
Service, Pod /
API Server
Check & Report

78. cAdvisor
/

79. ref: https://keithtenzer.com/2015/05/04/kubernetes-container-orchestration-through-java-apis/

80. Kube-Proxy
iptable
,

81. Network Plugin
Node(EC2)
Overlay Network .
CNI Plugin .
Weave, Calico, Flannel, Cilium
Calico

82. Label
K8s Object
Label .
Label Object
Select

83. K8s Namespace
AWS VPC
Namespace

84. Deployment
rollout / rollback
.
Pod < ReplicaSet < Deployment

85. StatefulSet
Pod
Volume .
Deployment Stateless

86. DaemonSet
Node1
Pod1
ex) Fluentd

87. .

88.
25

89. .