Apache Ignite on your Kubernetes Cluster Part 3: Configuration explained

Emmanouil GkatziourasApril 16th, 2020Last Updated: April 13th, 2020

0 291 1 minute read

Previously we had a look on the RBAC needed for and ignite cluster in Kubernetes.

This blogs focuses on the deployment and the configuration of the cache.

The default ignite installation uses and xml based configuration. It is easy to mount files using configmaps.

> kubectl get configmap ignite-cache-configmap -o yaml
NAME                     DATA   AGE
ignite-cache-configmap   1      32d
gkatzioura@MacBook-Pro-2 templates % kubectl get configmap ignite-cache-configmap -o yaml
apiVersion: v1
data:
  ignite-config.xml: "....\n"
kind: ConfigMap
metadata:
  creationTimestamp: 2020-03-07T22:23:50Z
  name: ignite-cache-configmap
  namespace: default
  resourceVersion: "137521"
  selfLink: /api/v1/namespaces/default/configmaps/ignite-cache-configmap
  uid: ff530e3d-10d6-4708-817f-f9845886c1b0

Since viewing the xml from the configmap is cumbersome this is the actual xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="
               http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean class="org.apache.ignite.configuration.IgniteConfiguration">
        <property
                name="peerClassLoadingEnabled" value="false"/>
        <property name="dataStorageConfiguration">
            <bean class="org.apache.ignite.configuration.DataStorageConfiguration">
            </bean>
        </property>
        <property
                name="discoverySpi">
            <bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
                <property name="ipFinder">
                    <bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.kubernetes.TcpDiscoveryKubernetesIpFinder">
                        <property name="namespace" value="default"/>
                        <property
                                name="serviceName" value="ignite-cache"/>
                    </bean>
                </property>
            </bean>
        </property>
    </bean>
</beans>

The default DataStorageConfiguration is being used.
What you can see different from other ignite installations is TCP discovery. The tcp discover used is using the Kubernetes TCP based discovery.

The next blog focuses on the services and the deployment.

Published on Java Code Geeks with permission by Emmanouil Gkatziouras, partner at our JCG program. See the original article here: Apache Ignite on your Kubernetes Cluster Part 3: Configuration explained

Opinions expressed by Java Code Geeks contributors are their own.