Stop importing tutorials from k/examples repo
Signed-off-by: Ahmet Alp Balkan <ahmetb@google.com>
This commit is contained in:
Ahmet Alp Balkan
@@ -1,48 +1,13 @@
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---
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title: "Example: Deploying Cassandra with Stateful Sets"
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assignees:
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- ahmetb
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---
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<!--
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DO NOT UPDATE THIS FILE!
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Submit a patch to https://github.com/kubernetes/examples and
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once it is merged, run ./update-imported-tutorials.sh to
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import it to the website.
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-->
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{% capture overview %}
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This tutorial shows you how to develop a native cloud [Cassandra](http://cassandra.apache.org/) deployment on Kubernetes. In this instance, a custom Cassandra `SeedProvider` enables Cassandra to discover new Cassandra nodes as they join the cluster.
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Deploying stateful distributed applications, like Cassandra, within a clustered environment can be challenging. StatefulSets greatly simplify this process. Please read about [StatefulSets](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/) for more information about the features used in this tutorial.
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Deploying stateful distributed applications, like Cassandra, within a clustered environment can be challenging. StatefulSets greatly simplify this process. Please read about [StatefulSets](/docs/concepts/workloads/controllers/statefulset/) for more information about the features used in this tutorial.
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**Cassandra Docker**
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@@ -67,20 +32,20 @@ The docker is based on `debian:jessie` and includes OpenJDK 8. This image includ
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{% endcapture %}
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{% capture prerequisites %}
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To complete this tutorial, you should already have a basic familiarity with [Pods](https://kubernetes.io/docs/concepts/workloads/pods/pod/), [Services](https://kubernetes.io/docs/concepts/services-networking/service/), and [StatefulSets](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/). In addition, you should:
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To complete this tutorial, you should already have a basic familiarity with [Pods](/docs/concepts/workloads/pods/pod/), [Services](/docs/concepts/services-networking/service/), and [StatefulSets](/docs/concepts/workloads/controllers/statefulset/). In addition, you should:
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* [Install and Configure](https://kubernetes.io/docs/tasks/tools/install-kubectl/) the `kubectl` command line
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* [Install and Configure](/docs/tasks/tools/install-kubectl/) the `kubectl` command line
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* Download [cassandra-service.yaml](https://kubernetes.io/docs/tutorials/stateful-application/cassandra-service.yaml) and [cassandra-statefulset.yaml](https://kubernetes.io/docs/tutorials/stateful-application/cassandra-statefulset.yaml)
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* Download [cassandra-service.yaml](/docs/tutorials/stateful-application/cassandra/cassandra-service.yaml) and [cassandra-statefulset.yaml](/docs/tutorials/stateful-application/cassandra/cassandra-statefulset.yaml)
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* Have a supported Kubernetes Cluster running
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**Note:** Please read the [getting started guides](https://kubernetes.io/docs/setup/pick-right-solution/) if you do not already have a cluster.
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**Note:** Please read the [getting started guides](/docs/setup/pick-right-solution/) if you do not already have a cluster.
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{: .note}
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### Additional Minikube Setup Instructions
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**Caution:** [Minikube](https://kubernetes.io/docs/getting-started-guides/minikube/) defaults to 1024MB of memory and 1 CPU which results in an insufficient resource errors during this tutorial.
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**Caution:** [Minikube](/docs/getting-started-guides/minikube/) defaults to 1024MB of memory and 1 CPU which results in an insufficient resource errors during this tutorial.
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{: .caution}
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To avoid these errors, run minikube with:
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@@ -91,7 +56,7 @@ To avoid these errors, run minikube with:
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{% capture lessoncontent %}
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## Creating a Cassandra Headless Service
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A Kubernetes [Service](https://kubernetes.io/docs/concepts/services-networking/service/) describes a set of [Pods](https://kubernetes.io/docs/concepts/workloads/pods/pod/) that perform the same task.
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A Kubernetes [Service](/docs/concepts/services-networking/service/) describes a set of [Pods](/docs/concepts/workloads/pods/pod/) that perform the same task.
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The following `Service` is used for DNS lookups between Cassandra Pods and clients within the Kubernetes Cluster.
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@@ -100,7 +65,7 @@ The following `Service` is used for DNS lookups between Cassandra Pods and clien
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kubectl create -f cassandra-service.yaml
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{% include code.html language="yaml" file="cassandra-service.yaml" ghlink="/docs/tutorials/stateful-application/cassandra-service.yaml" %}
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{% include code.html language="yaml" file="cassandra/cassandra-service.yaml" ghlink="/docs/tutorials/stateful-application/cassandra/cassandra-service.yaml" %}
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### Validating (optional)
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@@ -113,7 +78,7 @@ The response should be
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NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE
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cassandra None <none> 9042/TCP 45s
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If anything else returns, the service was not successfully created. Read [Debug Services](https://kubernetes.io/docs/tasks/debug-application-cluster/debug-service/) for common issues.
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If anything else returns, the service was not successfully created. Read [Debug Services](/docs/tasks/debug-application-cluster/debug-service/) for common issues.
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## Using a StatefulSet to Create a Cassandra Ring
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@@ -127,7 +92,7 @@ The StatefulSet manifest, included below, creates a Cassandra ring that consists
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kubectl create -f cassandra-statefulset.yaml
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{% include code.html language="yaml" file="cassandra-statefulset.yaml" ghlink="/docs/tutorials/stateful-application/cassandra-statefulset.yaml" %}
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{% include code.html language="yaml" file="cassandra/cassandra-statefulset.yaml" ghlink="/docs/tutorials/stateful-application/cassandra/cassandra-statefulset.yaml" %}
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## Validating The Cassandra StatefulSet
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@@ -246,14 +211,10 @@ Deleting or scaling a StatefulSet down does not delete the volumes associated wi
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{% endcapture %}
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{% capture whatsnext %}
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* Learn how to [Scale a StatefulSet](https://kubernetes.io/docs/tasks/run-application/scale-stateful-set/).
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* Learn how to [Scale a StatefulSet](/docs/tasks/run-application/scale-stateful-set/).
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* Learn more about the [KubernetesSeedProvider](https://github.com/kubernetes/examples/blob/master/cassandra/java/src/main/java/io/k8s/cassandra/KubernetesSeedProvider.java)
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* See more custom [Seed Provider Configurations](https://git.k8s.io/examples/cassandra/java/README.md)
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{% endcapture %}
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{% include templates/tutorial.md %}
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<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
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[]()
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<!-- END MUNGE: GENERATED_ANALYTICS -->
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