Add "tomcat deploy with k8s"

tomcat/README.md

@@ -52,9 +52,44 @@ Docker Hub.
     docker run --rm -it --hostname my-tomcat --name some-tomcat -p 8080:8080 clearlinux/tomcat
     ```
     
+
 <!-- Optional -->
 ### Deploy with Kubernetes
 
+This image can also be deployed on a Kubernetes cluster, such as [minikube](https://kubernetes.io/docs/setup/learning-environment/minikube/).The following example YAML files are provided in the repository as reference for Kubernetes deployment:
+
+- [`tomcat-deployment.yaml`](https://github.com/clearlinux/dockerfiles/blob/master/tomcat/tomcat-deployment.yaml): example using default configuration to create a basic tomcat service.
+
+- [`tomcat-deployment-index-custom.yaml`](https://github.com/clearlinux/dockerfiles/blob/master/tomcat/tomcat-deployment-index-custom.yaml): example using your own custom index html to create a tomcat service.
+
+- [`tomcat-deployment-conf-custom.yaml`](https://github.com/clearlinux/dockerfiles/blob/master/tomcat/tomcat-deployment-conf-custom.yaml): example using your own custom configuration to create a tomcat service.
+
+  
+
+Steps to deploy tomcat on a Kubernetes cluster:
+
+1. If you want to deploy `tomcat-deployment.yaml`
+
+   ```
+   kubectl create -f tomcat-deployment.yaml
+   ```
+
+   Or if you want to deploy `tomcat-deployment-index-custom.yaml`
+
+   ```
+   kubectl create -f tomcat-deployment-index-custom.yaml
+   ```
+
+   Or if you want to deploy `tomcat-deployment-conf-custom.yaml`
+
+   ```
+   kubectl create -f tomcat-deployment-conf-custom.yaml
+   ```
+
+2. Navigate to [http://\<nodeIP\>:30001](http://\<nodeIP\>:30001) in your browser, where 30001 is the port number defined in your service.
+
+   
+
 <!-- Required -->
 ## Build and modify:
 

tomcat/tomcat-deployment-conf-custom.yaml

@@ -0,0 +1,83 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: tomcat-conf
+data:
+  server.xml: |
+    <?xml version="1.0" encoding="UTF-8"?>
+    <Server port="8005" shutdown="SHUTDOWN">
+      <Listener className="org.apache.catalina.startup.VersionLoggerListener" />  
+      <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
+      <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
+      <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
+      <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
+
+      <GlobalNamingResources>
+        <Resource name="UserDatabase" auth="Container"
+                  type="org.apache.catalina.UserDatabase"
+                  description="User database that can be updated and saved"
+                  factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
+                  pathname="conf/tomcat-users.xml" />
+      </GlobalNamingResources>
+
+      <Service name="Catalina">
+        <Connector port="8080" protocol="HTTP/1.1"
+                   connectionTimeout="20000"
+                   redirectPort="8443" />
+ 
+        <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
+        <Engine name="Catalina" defaultHost="localhost">
+          <Realm className="org.apache.catalina.realm.LockOutRealm">
+            <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
+                   resourceName="UserDatabase"/>
+          </Realm>
+          <Host name="localhost"  appBase="webapps"
+                unpackWARs="true" autoDeploy="true">
+            <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
+                   prefix="localhost_access_log" suffix=".txt"
+                   pattern="%h %l %u %t &quot;%r&quot; %s %b" />
+          </Host>
+        </Engine>
+      </Service>
+    </Server>
+
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: my-tomcat
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: my-tomcat
+    spec:
+      containers:
+      - name: my-tomcat
+        image: docker.io/clearlinux/tomcat
+        ports:
+        - containerPort: 8080
+        volumeMounts:
+        - name: config-volume        
+          mountPath: /usr/share/apache-tomcat/conf/server.xml
+          subPath: server.xml
+      volumes:
+      - name: config-volume
+        configMap:
+          name: tomcat-conf
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: my-tomcat
+spec:
+  type: NodePort
+  ports:
+  - port: 8080
+    targetPort: 8080
+    nodePort: 30001
+  selector:
+    app: my-tomcat
+

tomcat/tomcat-deployment-index-custom.yaml

@@ -0,0 +1,48 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: tomcat-conf
+data:
+  index.jsp: |
+    hello,tomcat!
+
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: my-tomcat
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: my-tomcat
+    spec:
+      containers:
+      - name: my-tomcat
+        image: docker.io/clearlinux/tomcat
+        ports:
+        - containerPort: 8080
+        volumeMounts:
+        - name: config-volume        
+          mountPath: /usr/share/apache-tomcat/webapps/ROOT/index.jsp
+          subPath: index.jsp
+      volumes:
+      - name: config-volume
+        configMap:
+          name: tomcat-conf
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: my-tomcat
+spec:
+  type: NodePort
+  ports:
+  - port: 8080
+    targetPort: 8080
+    nodePort: 30001
+  selector:
+    app: my-tomcat
+

tomcat/tomcat-deployment.yaml

@@ -0,0 +1,30 @@
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: my-tomcat
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: my-tomcat
+    spec:
+      containers:
+      - name: my-tomcat
+        image: docker.io/clearlinux/tomcat
+        ports:
+        - containerPort: 8080
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: my-tomcat
+spec:
+  type: NodePort
+  ports:
+  - port: 8080
+    targetPort: 8080
+    nodePort: 30001
+  selector:
+    app: my-tomcat