The document discusses migrating traditional VM-based clusters to container-based clusters using Docker, Kubernetes, DC/OS, and Couchbase. It provides step-by-step instructions on setting up Couchbase clusters on each platform, including creating Docker machines and Swarm clusters, defining Kubernetes replication controllers and services, deploying Couchbase applications on DC/OS using Marathon, and automatically scaling the clusters.

1. Migrate
your
traditional
VM-­‐based
Clusters
to
Containers
Arun Gupta, @arungupta
Docker Captain, Java Champion

2. ©2016
Couchbase
Inc.
Amazon
Web
Services
2

3. ©2016
Couchbase
Inc.
Amazon
Web
Services
2
• Create VM 1, 2, 3
VM 1 VM 2 VM 3

4. ©2016
Couchbase
Inc.
Amazon
Web
Services
2
• Create VM 1, 2, 3
• Add Couchbase 1, 2, 3
VM 1 VM 2 VM 3

5. ©2016
Couchbase
Inc.
Cluster
Amazon
Web
Services
2
• Create VM 1, 2, 3
• Add Couchbase 1, 2, 3
• Create cluster
VM 1 VM 2 VM 3

6. ©2016
Couchbase
Inc.
Cluster
Amazon
Web
Services
2
• Create VM 1, 2, 3
• Add Couchbase 1, 2, 3
• Create cluster
• Rebalance cluster
VM 1 VM 2 VM 3

7. ©2016
Couchbase
Inc.
Docker
Machine
+
Compose
+
Swarm
3

8. ©2016
Couchbase
Inc.
Docker
Machine
+
Compose
+
Swarm
3
Swarm Master
Swarm Node 01
Swarm Node 02
Consul Machine

9. ©2016
Couchbase
Inc.
Docker
Machine
+
Compose
+
Swarm
3
Swarm Master
Swarm Node 01
Swarm Node 02
Consul Machine

10. ©2016
Couchbase
Inc.
Docker
Machine
+
Compose
+
Swarm
3
Swarm Master
Swarm Node 01
Swarm Node 02
Consul Machine
version: "2"
services:
db:
image: arungupta/couchbase
network_mode: "host"
ports:
- 8091:8091
- 8092:8092
- 8093:8093
- 11210:11210

11. ©2016
Couchbase
Inc.
Docker
Machine
+
Compose
+
Swarm
3
Swarm Master
Swarm Node 01
Swarm Node 02
Consul Machine
version: "2"
services:
db:
image: arungupta/couchbase
network_mode: "host"
ports:
- 8091:8091
- 8092:8092
- 8093:8093
- 11210:11210
scale db=2
docker-compose

12. ©2016
Couchbase
Inc.
Docker
Machine
+
Compose
+
Swarm
3
Swarm Master
Swarm Node 01
Swarm Node 02
Consul Machine
version: "2"
services:
db:
image: arungupta/couchbase
network_mode: "host"
ports:
- 8091:8091
- 8092:8092
- 8093:8093
- 11210:11210
scale db=2
docker-compose

13. ©2016
Couchbase
Inc.
Docker
Machine
+
Compose
+
Swarm
3
Swarm Master
Swarm Node 01
Swarm Node 02
Consul Machine
version: "2"
services:
db:
image: arungupta/couchbase
network_mode: "host"
ports:
- 8091:8091
- 8092:8092
- 8093:8093
- 11210:11210
scale db=2
docker-compose

14. ©2016
Couchbase
Inc.
Kubernetes
4

15. ©2016
Couchbase
Inc.
Kubernetes
4
Master
Minion 1
Minion 3
Minion 2
Minion 4

16. ©2016
Couchbase
Inc.
Kubernetes
4
Master
Minion 1
Minion 3
Minion 2
Minion 4
apiVersion: v1
kind: ReplicationController
metadata:
name: couchbase-controller
spec:
replicas: 1
selector:
app: couchbase-master-pod
template:
metadata:
labels:
app: couchbase-master-pod
spec:
containers:
- name: couchbase-master
image: arungupta/couchbase
env:
- name: TYPE
value: MASTER
ports:
- containerPort: 8091
----
apiVersion: v1
kind: Service
metadata:
name: couchbase-service
labels:
app: couchbase-master-service
spec:
ports:
- port: 8091
selector:
app: couchbase-master-pod

17. ©2016
Couchbase
Inc.
Kubernetes
4
Master
Minion 1
Minion 3
Minion 2
Minion 4
apiVersion: v1
kind: ReplicationController
metadata:
name: couchbase-controller
spec:
replicas: 1
selector:
app: couchbase-master-pod
template:
metadata:
labels:
app: couchbase-master-pod
spec:
containers:
- name: couchbase-master
image: arungupta/couchbase
env:
- name: TYPE
value: MASTER
ports:
- containerPort: 8091
----
apiVersion: v1
kind: Service
metadata:
name: couchbase-service
labels:
app: couchbase-master-service
spec:
ports:
- port: 8091
selector:
app: couchbase-master-pod

18. ©2016
Couchbase
Inc.
Kubernetes
4
Master
Minion 1
Minion 3
Minion 2
Minion 4
apiVersion: v1
kind: ReplicationController
metadata:
name: couchbase-controller
spec:
replicas: 1
selector:
app: couchbase-master-pod
template:
metadata:
labels:
app: couchbase-master-pod
spec:
containers:
- name: couchbase-master
image: arungupta/couchbase
env:
- name: TYPE
value: MASTER
ports:
- containerPort: 8091
----
apiVersion: v1
kind: Service
metadata:
name: couchbase-service
labels:
app: couchbase-master-service
spec:
ports:
- port: 8091
selector:
app: couchbase-master-pod
env:
- name: TYPE
value: WORKER
- name: COUCHBASE_MASTER
value: SERVICE_IP_OF_MASTER
- name: AUTO_REBALANCE
value: true

19. ©2016
Couchbase
Inc.
Kubernetes
4
Master
Minion 1
Minion 3
Minion 2
Minion 4
apiVersion: v1
kind: ReplicationController
metadata:
name: couchbase-controller
spec:
replicas: 1
selector:
app: couchbase-master-pod
template:
metadata:
labels:
app: couchbase-master-pod
spec:
containers:
- name: couchbase-master
image: arungupta/couchbase
env:
- name: TYPE
value: MASTER
ports:
- containerPort: 8091
----
apiVersion: v1
kind: Service
metadata:
name: couchbase-service
labels:
app: couchbase-master-service
spec:
ports:
- port: 8091
selector:
app: couchbase-master-pod
scale replicas=2
kubectlenv:
- name: TYPE
value: WORKER
- name: COUCHBASE_MASTER
value: SERVICE_IP_OF_MASTER
- name: AUTO_REBALANCE
value: true

20. ©2016
Couchbase
Inc.
DC/OS
5

21. ©2016
Couchbase
Inc.
DC/OS
5
Master
Slave 1
Slave 3
Slave 2

22. ©2016
Couchbase
Inc.
DC/OS
5
Master
Slave 1
Slave 3
Slave 2

23. ©2016
Couchbase
Inc.
DC/OS
5
Master
Slave 1
Slave 3
Slave 2
{
"id": "couchbase-mesos",
"container": {
"type": "DOCKER",
"docker": {
"image": "arungupta/couchbase",
"network": "BRIDGE",
"portMappings": [
{ "hostPort": 0, "containerPort":
8091, "servicePort": 8091 },
{ "hostPort": 0, "containerPort":
8092, "servicePort": 8092 },
{ "hostPort": 0, "containerPort":
8093, "servicePort": 8093 },
{ "hostPort": 0, "containerPort":
11210, "servicePort": 11210 }
],
"forcePullImage":true
}
},
"instances": 1,
"cpus": 2.0,
"mem": 2048,
"labels":{
"HAPROXY_GROUP":"external"
}
}

24. ©2016
Couchbase
Inc.
DC/OS
5
Master
Slave 1
Slave 3
Slave 2
{
"id": "couchbase-mesos",
"container": {
"type": "DOCKER",
"docker": {
"image": "arungupta/couchbase",
"network": "BRIDGE",
"portMappings": [
{ "hostPort": 0, "containerPort":
8091, "servicePort": 8091 },
{ "hostPort": 0, "containerPort":
8092, "servicePort": 8092 },
{ "hostPort": 0, "containerPort":
8093, "servicePort": 8093 },
{ "hostPort": 0, "containerPort":
11210, "servicePort": 11210 }
],
"forcePullImage":true
}
},
"instances": 1,
"cpus": 2.0,
"mem": 2048,
"labels":{
"HAPROXY_GROUP":"external"
}
}
Marathon

25. ©2016
Couchbase
Inc.
DC/OS
5
Master
Slave 1
Slave 3
Slave 2
{
"id": "couchbase-mesos",
"container": {
"type": "DOCKER",
"docker": {
"image": "arungupta/couchbase",
"network": "BRIDGE",
"portMappings": [
{ "hostPort": 0, "containerPort":
8091, "servicePort": 8091 },
{ "hostPort": 0, "containerPort":
8092, "servicePort": 8092 },
{ "hostPort": 0, "containerPort":
8093, "servicePort": 8093 },
{ "hostPort": 0, "containerPort":
11210, "servicePort": 11210 }
],
"forcePullImage":true
}
},
"instances": 1,
"cpus": 2.0,
"mem": 2048,
"labels":{
"HAPROXY_GROUP":"external"
}
}
app update instances=2
Marathon Marathon
dcos

26. ©2016
Couchbase
Inc.
References
▪Docker: docker.io
– Interlock: https://github.com/ehazlett/interlock
▪Kubernetes: kubernetes.io
▪DC/OS: dcos.io
▪OpenShift: openshift.io
▪Couchbase on Containers: couchbase.com/containers
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