Multimaster Kubernetes Cluster on Amazon Using Kops

Check out how to use Kops — short for Kubernetes Operations — to help get your Kubernetes clusters up and running on Amazon.

Arun Gupta

Nov. 10, 16 · Cloud Zone · Tutorial

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Getting Started with Kubernetes 1.4 using Spring Boot and Couchbase explains how to get started with Kubernetes 1.4 on Amazon Web Services. A Couchbase service is created in the cluster and a Spring Boot application stores a JSON document in the database. It uses a kube-up.sh script from the Kubernetes binary download at to start the cluster. This script is capable of creating a Kubernetes cluster with single master only. This is a fundamental flaw of distributed applications where the master becomes a Single Point of Failure.

Meet kops – short for Kubernetes Operations.

This is the easiest way to get a highly-available Kubernetes cluster up and running. The kubectl script is the CLI for running commands against running clusters. Think of kops as kubectl for cluster.

This blog will show how to create a highly-available Kubernetes cluster on Amazon using kops. And once the cluster is created, then it’ll create a Couchbase service on it and run a Spring Boot application to store JSON document in the database.

Many thanks to justinsb, sarahz, razic, jaygorrell, shrugs, bkpandey, and others at the Kubernetes slack channel for helping me through the details!

Download Kops and Kubectl

Download the latest Kops release. This blog was tested with 1.4.1 on OSX. The complete set of commands for kops can be seen:

kops-darwin-amd64 --help
kops is kubernetes ops.
It allows you to create, destroy, upgrade and maintain clusters.

Usage:
  kops [command]

Available Commands:
  create         create resources
  delete         delete clusters
  describe       describe objects
  edit           edit items
  export         export clusters/kubecfg
  get            list or get objects
  import         import clusters
  rolling-update rolling update clusters
  secrets        Manage secrets & keys
  toolbox        Misc infrequently used commands
  update         update clusters
  upgrade        upgrade clusters
  version        Print the client version information

Flags:
      --alsologtostderr                  log to standard error as well as files
      --config string                    config file (default is $HOME/.kops.yaml)
      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
      --log_dir string                   If non-empty, write log files in this directory
      --logtostderr                      log to standard error instead of files (default false)
      --name string                      Name of cluster
      --state string                     Location of state storage
      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
  -v, --v Level                          log level for V logs
      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging

Use "kops [command] --help" for more information about a command.

Download kubectl:

curl -Lo kubectl http://storage.googleapis.com/kubernetes-release/release/v1.4.1/bin/darwin/amd64/kubectl && chmod +x kubectl

Include kubectl in your PATH.

Create Bucket and NS Records on Amazon

There is a bit of setup involved at this time, and hopefully this will get cleaned up over next releases. Bringing up a cluster on AWS provide detailed steps and more background. Here is what the blog followed:

Pick a domain where Kubernetes cluster will be hosted. This blog uses kubernetes.arungupta.me domain. You can pick a top level domain or a sub-domain.
Amazon Route 53 is a highly available and scalable DNS service. Login to Amazon Console and created a hosted zone for this domain using Route 53 service.Created zone looks like:The values shown in the Value column are important as they’ll be used later for creating NS records.
Create an S3 bucket using Amazon Console to store cluster configuration – this is called state store.
The domain kubernetes.arungupta.me is hosted on GoDaddy. For each value shown in the Value column of Route53 hosted zone, create a NS record using GoDaddy Domain Control Center for this domain.Select the type of record:For each value, add the record as shown:Completed set of records look like:

Start Kubernetes Multimaster Cluster

Let’s understand a bit about Amazon regions and zones:

Amazon EC2 is hosted in multiple locations world-wide. These locations are composed of regions and Availability Zones. Each region is a separate geographic area. Each region has multiple, isolated locations known as Availability Zones.

Amazon Docs

A highly-available Kubernetes cluster can be created across zones but not across regions.

Find out availability zones within a region:

aws ec2 describe-availability-zones --region us-west-2
{
    "AvailabilityZones": [
        {
            "State": "available", 
            "RegionName": "us-west-2", 
            "Messages": [], 
            "ZoneName": "us-west-2a"
        }, 
        {
            "State": "available", 
            "RegionName": "us-west-2", 
            "Messages": [], 
            "ZoneName": "us-west-2b"
        }, 
        {
            "State": "available", 
            "RegionName": "us-west-2", 
            "Messages": [], 
            "ZoneName": "us-west-2c"
        }
    ]
}

Create a multi-master cluster:

kops-darwin-amd64 create cluster --name=kubernetes.arungupta.me --cloud=aws --zones=us-west-2a,us-west-2b,us-west-2c --master-size=m4.large --node-count=3 --node-size=m4.2xlarge --master-zones=us-west-2a,us-west-2b,us-west-2c --state=s3://kops-couchbase --yes

Specifying multiple zones using --master-zones (must be odd number) create multiple masters across AZ.
--cloud=aws is optional if cloud can be inferred from zones.
--yes is used to specify the immediate creation of cluster. Otherwise only the state is stored in the bucket, and the cluster needs to be created separately.

./kops-darwin-amd64 create cluster --help
Creates a k8s cluster.

Usage:
  kops create cluster [flags]

Flags:
      --admin-access string         Restrict access to admin endpoints (SSH, HTTPS) to this CIDR.  If not set, access will not be restricted by IP.
      --associate-public-ip         Specify --associate-public-ip=[true|false] to enable/disable association of public IP for master ASG and nodes. Default is 'true'. (default true)
      --channel string              Channel for default versions and configuration to use (default "stable")
      --cloud string                Cloud provider to use - gce, aws
      --dns-zone string             DNS hosted zone to use (defaults to last two components of cluster name)
      --image string                Image to use
      --kubernetes-version string   Version of kubernetes to run (defaults to version in channel)
      --master-size string          Set instance size for masters
      --master-zones string         Zones in which to run masters (must be an odd number)
      --model string                Models to apply (separate multiple models with commas) (default "config,proto,cloudup")
      --network-cidr string         Set to override the default network CIDR
      --networking string           Networking mode to use.  kubenet (default), classic, external. (default "kubenet")
      --node-count int              Set the number of nodes
      --node-size string            Set instance size for nodes
      --out string                  Path to write any local output
      --project string              Project to use (must be set on GCE)
      --ssh-public-key string       SSH public key to use (default "~/.ssh/id_rsa.pub")
      --target string               Target - direct, terraform (default "direct")
      --vpc string                  Set to use a shared VPC
      --yes                         Specify --yes to immediately create the cluster
      --zones string                Zones in which to run the cluster

Global Flags:
      --alsologtostderr                  log to standard error as well as files
      --config string                    config file (default is $HOME/.kops.yaml)
      --log_backtrace_at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
      --log_dir string                   If non-empty, write log files in this directory
      --logtostderr                      log to standard error instead of files (default false)
      --name string                      Name of cluster
      --state string                     Location of state storage
      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
  -v, --v Level                          log level for V logs
      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging

Once the cluster is created, get more details about the cluster:

kubectl cluster-info
Kubernetes master is running at https://api.kubernetes.arungupta.me
KubeDNS is running at https://api.kubernetes.arungupta.me/api/v1/proxy/namespaces/kube-system/services/kube-dns

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

Check cluster client and server version:

kubectl version
Client Version: version.Info{Major:"1", Minor:"4", GitVersion:"v1.4.1", GitCommit:"33cf7b9acbb2cb7c9c72a10d6636321fb180b159", GitTreeState:"clean", BuildDate:"2016-10-10T18:19:49Z", GoVersion:"go1.7.1", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"4", GitVersion:"v1.4.3", GitCommit:"4957b090e9a4f6a68b4a40375408fdc74a212260", GitTreeState:"clean", BuildDate:"2016-10-16T06:20:04Z", GoVersion:"go1.6.3", Compiler:"gc", Platform:"linux/amd64"}

Check all nodes in the cluster:

kubectl get nodes 
NAME                                           STATUS    AGE
ip-172-20-111-151.us-west-2.compute.internal   Ready     1h
ip-172-20-116-40.us-west-2.compute.internal    Ready     1h
ip-172-20-48-41.us-west-2.compute.internal     Ready     1h
ip-172-20-49-105.us-west-2.compute.internal    Ready     1h
ip-172-20-80-233.us-west-2.compute.internal    Ready     1h
ip-172-20-82-93.us-west-2.compute.internal     Ready     1h

Or find out only the master nodes:

kubectl get nodes -l kubernetes.io/role=master
NAME                                           STATUS    AGE
ip-172-20-111-151.us-west-2.compute.internal   Ready     1h
ip-172-20-48-41.us-west-2.compute.internal     Ready     1h
ip-172-20-82-93.us-west-2.compute.internal     Ready     1h

Check all the clusters:

kops-darwin-amd64 get clusters --state=s3://kops-couchbase
NAME            CLOUD    ZONES
kubernetes.arungupta.me    aws    us-west-2a,us-west-2b,us-west-2c

Kubernetes Dashboard Addon

By default, a cluster created using kops does not have the UI dashboard. But this can be added as an add-on:

kubectl create -f https://raw.githubusercontent.com/kubernetes/kops/master/addons/kubernetes-dashboard/v1.4.0.yaml
deployment "kubernetes-dashboard-v1.4.0" created
service "kubernetes-dashboard" created

Now complete details about the cluster can be seen:

kubectl cluster-info
Kubernetes master is running at https://api.kubernetes.arungupta.me
KubeDNS is running at https://api.kubernetes.arungupta.me/api/v1/proxy/namespaces/kube-system/services/kube-dns
kubernetes-dashboard is running at https://api.kubernetes.arungupta.me/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

And the Kubernetes UI dashboard is at the shown URL. In our case, this is https://api.kubernetes.arungupta.me/ui and looks like:

Credentials for accessing this dashboard can be obtained using the kubectl config view command. The values are shown like:

- name: kubernetes.arungupta.me-basic-auth
  user:
    password: PASSWORD
    username: admin

Deploy Couchbase Service

As explained in Getting Started with Kubernetes 1.4 using Spring Boot and Couchbase, let’s run a Couchbase service:

kubectl create -f ~/workspaces/kubernetes-java-sample/maven/couchbase-service.yml 
service "couchbase-service" created
replicationcontroller "couchbase-rc" created

This configuration file is here.

Get the list of services:

kubectl get svc
NAME                CLUSTER-IP     EXTERNAL-IP   PORT(S)                                AGE
couchbase-service   100.65.4.139   <none>        8091/TCP,8092/TCP,8093/TCP,11210/TCP   27s
kubernetes          100.64.0.1     <none>        443/TCP                                2h

Describe the service:

kubectl describe svc/couchbase-service
Name:            couchbase-service
Namespace:        default
Labels:            <none>
Selector:        app=couchbase-rc-pod
Type:            ClusterIP
IP:            100.65.4.139
Port:            admin    8091/TCP
Endpoints:        100.96.5.2:8091
Port:            views    8092/TCP
Endpoints:        100.96.5.2:8092
Port:            query    8093/TCP
Endpoints:        100.96.5.2:8093
Port:            memcached    11210/TCP
Endpoints:        100.96.5.2:11210
Session Affinity:    None

Get the pods:

kubectl get pods
NAME                 READY     STATUS    RESTARTS   AGE
couchbase-rc-e35v5   1/1       Running   0          1m

Run Spring Boot Application

The Spring Boot application runs against the Couchbase service and stores a JSON document in it.

Start the Spring Boot application:

kubectl create -f ~/workspaces/kubernetes-java-sample/maven/bootiful-couchbase.yml 
job "bootiful-couchbase" created

This configuration file is here.

See a list of all the pods:

kubectl get pods --show-all
NAME                       READY     STATUS      RESTARTS   AGE
bootiful-couchbase-ainv8   0/1       Completed   0          1m
couchbase-rc-e35v5         1/1       Running     0          3m

Check logs of the complete pod:

kubectl logs bootiful-couchbase-ainv8

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.4.0.RELEASE)

2016-11-02 18:48:56.035  INFO 7 --- [           main] org.example.webapp.Application           : Starting Application v1.0-SNAPSHOT on bootiful-couchbase-ainv8 with PID 7 (/maven/bootiful-couchbase.jar started by root in /)
2016-11-02 18:48:56.040  INFO 7 --- [           main] org.example.webapp.Application           : No active profile set, falling back to default profiles: default
2016-11-02 18:48:56.115  INFO 7 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@108c4c35: startup date [Wed Nov 02 18:48:56 UTC 2016]; root of context hierarchy
2016-11-02 18:48:57.021  INFO 7 --- [           main] com.couchbase.client.core.CouchbaseCore  : CouchbaseEnvironment: {sslEnabled=false, sslKeystoreFile='null', sslKeystorePassword='null', queryEnabled=false, queryPort=8093, bootstrapHttpEnabled=true, bootstrapCarrierEnabled=true, bootstrapHttpDirectPort=8091, bootstrapHttpSslPort=18091, bootstrapCarrierDirectPort=11210, bootstrapCarrierSslPort=11207, ioPoolSize=8, computationPoolSize=8, responseBufferSize=16384, requestBufferSize=16384, kvServiceEndpoints=1, viewServiceEndpoints=1, queryServiceEndpoints=1, searchServiceEndpoints=1, ioPool=NioEventLoopGroup, coreScheduler=CoreScheduler, eventBus=DefaultEventBus, packageNameAndVersion=couchbase-java-client/2.2.8 (git: 2.2.8, core: 1.2.9), dcpEnabled=false, retryStrategy=BestEffort, maxRequestLifetime=75000, retryDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=100, upper=100000}, reconnectDelay=ExponentialDelay{growBy 1.0 MILLISECONDS, powers of 2; lower=32, upper=4096}, observeIntervalDelay=ExponentialDelay{growBy 1.0 MICROSECONDS, powers of 2; lower=10, upper=100000}, keepAliveInterval=30000, autoreleaseAfter=2000, bufferPoolingEnabled=true, tcpNodelayEnabled=true, mutationTokensEnabled=false, socketConnectTimeout=1000, dcpConnectionBufferSize=20971520, dcpConnectionBufferAckThreshold=0.2, dcpConnectionName=dcp/core-io, callbacksOnIoPool=false, queryTimeout=7500, viewTimeout=7500, kvTimeout=2500, connectTimeout=5000, disconnectTimeout=25000, dnsSrvEnabled=false}
2016-11-02 18:48:57.245  INFO 7 --- [      cb-io-1-1] com.couchbase.client.core.node.Node      : Connected to Node couchbase-service
2016-11-02 18:48:57.291  INFO 7 --- [      cb-io-1-1] com.couchbase.client.core.node.Node      : Disconnected from Node couchbase-service
2016-11-02 18:48:57.533  INFO 7 --- [      cb-io-1-2] com.couchbase.client.core.node.Node      : Connected to Node couchbase-service
2016-11-02 18:48:57.638  INFO 7 --- [-computations-4] c.c.c.core.config.ConfigurationProvider  : Opened bucket books
2016-11-02 18:48:58.152  INFO 7 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
Book{isbn=978-1-4919-1889-0, name=Minecraft Modding with Forge, cost=29.99}
2016-11-02 18:48:58.402  INFO 7 --- [           main] org.example.webapp.Application           : Started Application in 2.799 seconds (JVM running for 3.141)
2016-11-02 18:48:58.403  INFO 7 --- [       Thread-5] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@108c4c35: startup date [Wed Nov 02 18:48:56 UTC 2016]; root of context hierarchy
2016-11-02 18:48:58.404  INFO 7 --- [       Thread-5] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2016-11-02 18:48:58.410  INFO 7 --- [      cb-io-1-2] com.couchbase.client.core.node.Node      : Disconnected from Node couchbase-service
2016-11-02 18:48:58.410  INFO 7 --- [       Thread-5] c.c.c.core.config.ConfigurationProvider  : Closed bucket books

The updated dashboard now looks like:

Delete the Kubernetes Cluster

The Kubernetes cluster can be deleted as:

kops-darwin-amd64 delete cluster --name=kubernetes.arungupta.me --state=s3://kops-couchbase --yes
TYPE            NAME                                            ID
autoscaling-config    master-us-west-2a.masters.kubernetes.arungupta.me-20161101235639            master-us-west-2a.masters.kubernetes.arungupta.me-20161101235639
autoscaling-config    master-us-west-2b.masters.kubernetes.arungupta.me-20161101235639            master-us-west-2b.masters.kubernetes.arungupta.me-20161101235639
autoscaling-config    master-us-west-2c.masters.kubernetes.arungupta.me-20161101235639            master-us-west-2c.masters.kubernetes.arungupta.me-20161101235639
autoscaling-config    nodes.kubernetes.arungupta.me-20161101235639                        nodes.kubernetes.arungupta.me-20161101235639
autoscaling-group    master-us-west-2a.masters.kubernetes.arungupta.me                    master-us-west-2a.masters.kubernetes.arungupta.me
autoscaling-group    master-us-west-2b.masters.kubernetes.arungupta.me                    master-us-west-2b.masters.kubernetes.arungupta.me
autoscaling-group    master-us-west-2c.masters.kubernetes.arungupta.me                    master-us-west-2c.masters.kubernetes.arungupta.me
autoscaling-group    nodes.kubernetes.arungupta.me                                nodes.kubernetes.arungupta.me
dhcp-options        kubernetes.arungupta.me                                    dopt-9b7b08ff
iam-instance-profile    masters.kubernetes.arungupta.me                                masters.kubernetes.arungupta.me
iam-instance-profile    nodes.kubernetes.arungupta.me                                nodes.kubernetes.arungupta.me
iam-role        masters.kubernetes.arungupta.me                                masters.kubernetes.arungupta.me
iam-role        nodes.kubernetes.arungupta.me                                nodes.kubernetes.arungupta.me
instance        master-us-west-2a.masters.kubernetes.arungupta.me                    i-8798eb9f
instance        master-us-west-2b.masters.kubernetes.arungupta.me                    i-eca96ab3
instance        master-us-west-2c.masters.kubernetes.arungupta.me                    i-63fd3dbf
instance        nodes.kubernetes.arungupta.me                                i-21a96a7e
instance        nodes.kubernetes.arungupta.me                                i-57fb3b8b
instance        nodes.kubernetes.arungupta.me                                i-5c99ea44
internet-gateway    kubernetes.arungupta.me                                    igw-b624abd2
keypair            kubernetes.kubernetes.arungupta.me-18:90:41:6f:5f:79:6a:a8:d5:b6:b8:3f:10:d5:d3:f3    kubernetes.kubernetes.arungupta.me-18:90:41:6f:5f:79:6a:a8:d5:b6:b8:3f:10:d5:d3:f3
route-table        kubernetes.arungupta.me                                    rtb-e44df183
route53-record        api.internal.kubernetes.arungupta.me.                            Z6I41VJM5VCZV/api.internal.kubernetes.arungupta.me.
route53-record        api.kubernetes.arungupta.me.                                Z6I41VJM5VCZV/api.kubernetes.arungupta.me.
route53-record        etcd-events-us-west-2a.internal.kubernetes.arungupta.me.                Z6I41VJM5VCZV/etcd-events-us-west-2a.internal.kubernetes.arungupta.me.
route53-record        etcd-events-us-west-2b.internal.kubernetes.arungupta.me.                Z6I41VJM5VCZV/etcd-events-us-west-2b.internal.kubernetes.arungupta.me.
route53-record        etcd-events-us-west-2c.internal.kubernetes.arungupta.me.                Z6I41VJM5VCZV/etcd-events-us-west-2c.internal.kubernetes.arungupta.me.
route53-record        etcd-us-west-2a.internal.kubernetes.arungupta.me.                    Z6I41VJM5VCZV/etcd-us-west-2a.internal.kubernetes.arungupta.me.
route53-record        etcd-us-west-2b.internal.kubernetes.arungupta.me.                    Z6I41VJM5VCZV/etcd-us-west-2b.internal.kubernetes.arungupta.me.
route53-record        etcd-us-west-2c.internal.kubernetes.arungupta.me.                    Z6I41VJM5VCZV/etcd-us-west-2c.internal.kubernetes.arungupta.me.
security-group        masters.kubernetes.arungupta.me                                sg-3e790f47
security-group        nodes.kubernetes.arungupta.me                                sg-3f790f46
subnet            us-west-2a.kubernetes.arungupta.me                            subnet-3cdbc958
subnet            us-west-2b.kubernetes.arungupta.me                            subnet-18c3f76e
subnet            us-west-2c.kubernetes.arungupta.me                            subnet-b30f6deb
volume            us-west-2a.etcd-events.kubernetes.arungupta.me                        vol-202350a8
volume            us-west-2a.etcd-main.kubernetes.arungupta.me                        vol-0a235082
volume            us-west-2b.etcd-events.kubernetes.arungupta.me                        vol-401f5bf4
volume            us-west-2b.etcd-main.kubernetes.arungupta.me                        vol-691f5bdd
volume            us-west-2c.etcd-events.kubernetes.arungupta.me                        vol-aefe163b
volume            us-west-2c.etcd-main.kubernetes.arungupta.me                        vol-e9fd157c
vpc            kubernetes.arungupta.me                                    vpc-e5f50382

internet-gateway:igw-b624abd2    still has dependencies, will retry
keypair:kubernetes.kubernetes.arungupta.me-18:90:41:6f:5f:79:6a:a8:d5:b6:b8:3f:10:d5:d3:f3    ok
instance:i-5c99ea44    ok
instance:i-63fd3dbf    ok
instance:i-eca96ab3    ok
instance:i-21a96a7e    ok
autoscaling-group:master-us-west-2a.masters.kubernetes.arungupta.me    ok
autoscaling-group:master-us-west-2b.masters.kubernetes.arungupta.me    ok
autoscaling-group:master-us-west-2c.masters.kubernetes.arungupta.me    ok
autoscaling-group:nodes.kubernetes.arungupta.me    ok
iam-instance-profile:nodes.kubernetes.arungupta.me    ok
iam-instance-profile:masters.kubernetes.arungupta.me    ok
instance:i-57fb3b8b    ok
instance:i-8798eb9f    ok
route53-record:Z6I41VJM5VCZV/etcd-events-us-west-2a.internal.kubernetes.arungupta.me.    ok
iam-role:nodes.kubernetes.arungupta.me    ok
iam-role:masters.kubernetes.arungupta.me    ok
autoscaling-config:nodes.kubernetes.arungupta.me-20161101235639    ok
autoscaling-config:master-us-west-2b.masters.kubernetes.arungupta.me-20161101235639    ok
subnet:subnet-b30f6deb    still has dependencies, will retry
subnet:subnet-3cdbc958    still has dependencies, will retry
subnet:subnet-18c3f76e    still has dependencies, will retry
autoscaling-config:master-us-west-2a.masters.kubernetes.arungupta.me-20161101235639    ok
autoscaling-config:master-us-west-2c.masters.kubernetes.arungupta.me-20161101235639    ok
volume:vol-0a235082    still has dependencies, will retry
volume:vol-202350a8    still has dependencies, will retry
volume:vol-401f5bf4    still has dependencies, will retry
volume:vol-e9fd157c    still has dependencies, will retry
volume:vol-aefe163b    still has dependencies, will retry
volume:vol-691f5bdd    still has dependencies, will retry
security-group:sg-3f790f46    still has dependencies, will retry
security-group:sg-3e790f47    still has dependencies, will retry
Not all resources deleted; waiting before reattempting deletion
    internet-gateway:igw-b624abd2
    security-group:sg-3f790f46
    volume:vol-aefe163b
    route-table:rtb-e44df183
    volume:vol-401f5bf4
    subnet:subnet-18c3f76e
    security-group:sg-3e790f47
    volume:vol-691f5bdd
    subnet:subnet-3cdbc958
    volume:vol-202350a8
    volume:vol-0a235082
    dhcp-options:dopt-9b7b08ff
    subnet:subnet-b30f6deb
    volume:vol-e9fd157c
    vpc:vpc-e5f50382
internet-gateway:igw-b624abd2    still has dependencies, will retry
volume:vol-e9fd157c    still has dependencies, will retry
subnet:subnet-3cdbc958    still has dependencies, will retry
subnet:subnet-18c3f76e    still has dependencies, will retry
subnet:subnet-b30f6deb    still has dependencies, will retry
volume:vol-0a235082    still has dependencies, will retry
volume:vol-aefe163b    still has dependencies, will retry
volume:vol-691f5bdd    still has dependencies, will retry
volume:vol-202350a8    still has dependencies, will retry
volume:vol-401f5bf4    still has dependencies, will retry
security-group:sg-3f790f46    still has dependencies, will retry
security-group:sg-3e790f47    still has dependencies, will retry
Not all resources deleted; waiting before reattempting deletion
    subnet:subnet-b30f6deb
    volume:vol-e9fd157c
    vpc:vpc-e5f50382
    internet-gateway:igw-b624abd2
    security-group:sg-3f790f46
    volume:vol-aefe163b
    route-table:rtb-e44df183
    volume:vol-401f5bf4
    subnet:subnet-18c3f76e
    security-group:sg-3e790f47
    volume:vol-691f5bdd
    subnet:subnet-3cdbc958
    volume:vol-202350a8
    volume:vol-0a235082
    dhcp-options:dopt-9b7b08ff
subnet:subnet-18c3f76e    still has dependencies, will retry
subnet:subnet-b30f6deb    still has dependencies, will retry
internet-gateway:igw-b624abd2    still has dependencies, will retry
subnet:subnet-3cdbc958    still has dependencies, will retry
volume:vol-691f5bdd    still has dependencies, will retry
volume:vol-0a235082    still has dependencies, will retry
volume:vol-202350a8    still has dependencies, will retry
volume:vol-401f5bf4    still has dependencies, will retry
volume:vol-aefe163b    still has dependencies, will retry
volume:vol-e9fd157c    still has dependencies, will retry
security-group:sg-3e790f47    still has dependencies, will retry
security-group:sg-3f790f46    still has dependencies, will retry
Not all resources deleted; waiting before reattempting deletion
    internet-gateway:igw-b624abd2
    security-group:sg-3f790f46
    volume:vol-aefe163b
    route-table:rtb-e44df183
    volume:vol-401f5bf4
    subnet:subnet-18c3f76e
    security-group:sg-3e790f47
    volume:vol-691f5bdd
    subnet:subnet-3cdbc958
    volume:vol-202350a8
    volume:vol-0a235082
    dhcp-options:dopt-9b7b08ff
    subnet:subnet-b30f6deb
    volume:vol-e9fd157c
    vpc:vpc-e5f50382
subnet:subnet-b30f6deb    still has dependencies, will retry
volume:vol-202350a8    still has dependencies, will retry
internet-gateway:igw-b624abd2    still has dependencies, will retry
subnet:subnet-18c3f76e    still has dependencies, will retry
volume:vol-e9fd157c    still has dependencies, will retry
volume:vol-aefe163b    still has dependencies, will retry
volume:vol-401f5bf4    still has dependencies, will retry
volume:vol-691f5bdd    still has dependencies, will retry
security-group:sg-3e790f47    still has dependencies, will retry
security-group:sg-3f790f46    still has dependencies, will retry
subnet:subnet-3cdbc958    still has dependencies, will retry
volume:vol-0a235082    still has dependencies, will retry
Not all resources deleted; waiting before reattempting deletion
    internet-gateway:igw-b624abd2
    security-group:sg-3f790f46
    volume:vol-aefe163b
    route-table:rtb-e44df183
    subnet:subnet-18c3f76e
    security-group:sg-3e790f47
    volume:vol-691f5bdd
    volume:vol-401f5bf4
    volume:vol-202350a8
    subnet:subnet-3cdbc958
    volume:vol-0a235082
    dhcp-options:dopt-9b7b08ff
    subnet:subnet-b30f6deb
    volume:vol-e9fd157c
    vpc:vpc-e5f50382
subnet:subnet-18c3f76e    ok
volume:vol-e9fd157c    ok
volume:vol-401f5bf4    ok
volume:vol-0a235082    ok
volume:vol-691f5bdd    ok
subnet:subnet-3cdbc958    ok
volume:vol-aefe163b    ok
subnet:subnet-b30f6deb    ok
internet-gateway:igw-b624abd2    ok
volume:vol-202350a8    ok
security-group:sg-3f790f46    ok
security-group:sg-3e790f47    ok
route-table:rtb-e44df183    ok
vpc:vpc-e5f50382    ok
dhcp-options:dopt-9b7b08ff    ok

Cluster deleted

Check out couchbase.com/containers for more details about how to run Couchbase in different container frameworks.

Related Refcard:

Kubernetes Essentials

Kubernetes cluster Spring Framework

Published at DZone with permission of Arun Gupta, DZone MVB. See the original article here.

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