Tomcat session clustering
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This document discusses different methods for session clustering in Tomcat, including on-premise and AWS approaches. It provides details on using L2 Multicast and DynamoDB for session management in AWS. The key steps outlined are: creating an IAM user for Tomcat to access DynamoDB, installing Tomcat on two EC2 instances, downloading and configuring the DynamoDB session manager jar, modifying the Tomcat context.xml file, creating a DynamoDB table for sessions, and testing session replication across the instances.
Tomcat session clustering
- 1. Tomcat Session Clustering ► 강남 중급 모임 ► 17.01.12
- 2. Page 2 목록 1. On-Premise 에서 사용하는 방식 2. AWS 에서 사용하는 방식 1. 지원 종류 2. 작업 순서 3. Q&A
- 3. Page 3 server.xml (L2 Multicast 이용한 방법) ► <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" ► channelSendOptions="6"> ► ► <Manager className="org.apache.catalina.ha.session.BackupManager" ► expireSessionsOnShutdown="false" ► notifyListenersOnReplication="true" ► mapSendOptions="6"/> ► <!-- ► <Manager className="org.apache.catalina.ha.session.DeltaManager" ► expireSessionsOnShutdown="false" ► notifyListenersOnReplication="true"/> ► --> ► <Channel className="org.apache.catalina.tribes.group.GroupChannel"> ► <Membership className="org.apache.catalina.tribes.membership.McastService" ► address="228.0.0.4" ► port="45564" ► frequency="500" ► dropTime="3000"/> ► <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" ► address="10.0.1.179" ► port="4000" ► selectorTimeout="100" ► maxThreads="6"/> ► ► <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> ► <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> ► </Sender> ► <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> ► <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> ► <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/> ► </Channel> ► ► <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" ► filter=".*.gif|.*.js|.*.jpeg|.*.jpg|.*.png|.*.htm|.*.html|.*.css|.*.txt"/> ► ► <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" ► tempDir="/tmp/war-temp/" ► deployDir="/tmp/war-deploy/" ► watchDir="/tmp/war-listen/" ► watchEnabled="false"/> ► ► <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> ► </Cluster>
- 4. Page 4 AWS 에서 지원 하는 방법 ►DynamoDB ►Memcached
- 5. Page 5 ► 참조 ► http://docs.aws.amazon.com/ko_kr/sdk-for-java/v1/developer-guide/java-dg-tomcat-session-manager.html ► https://aws.amazon.com/ko/blogs/developer/amazon-dynamodb-session-manager-for-apache-tomcat ► 조건 ► Tomcat 8.0.x ► http://apache.mirror.cdnetworks.com/tomcat/tomcat-8/v8.0.39/bin/apache-tomcat-8.0.39.tar.gz ► aws-dynamodb-session-tomcat-2.0.4.jar ► https://github.com/aws/aws-dynamodb-session-tomcat/releases ► https://github.com/aws/aws-dynamodb-session-tomcat/releases/download/v2.0.4/aws-dynamodb-session-tomcat-2.0.4.jar ► 순서 ► IAM 생성 Tomcat DynamoDB 접속용 계정 생성 ► 2대의 EC2 에 Tomcat 8 설치 ► aws-dynamodb-session-tomcat-2.0.4.jar 다운로드 ► Tomcat 8 context.xml 수정 (다음 페이지) ► Load Balancing (ALB or ELB) 생성 및 설정 추가 ► Target Groups 에 stickiness 설정 하기 ► DynamoDB 테이블 생성 ► Table Name : Tomcat_SessionState ► Primary partition key : sessionId (String) ► Tomcat 8 시작 및 확인 ► http://$alb-address/sesstion.jsp 세션 생성 ► http://$alb-address/manager 세션 확인 ► DynamoDB 세션 확인 ► 작업 내역 ► https://www.youtube.com/playlist?list=PLzMxB6D1eypLGDDTQj62EQoXz2vQ1xY2S DynamoDB 이용하는 방법
- 6. Page 6 ► <Manager ► className="com.amazonaws.services.dynamodb.sessionmanager.DynamoDBSessionManager" ► awsAccessKey=“$IAM_ACCESS_KEY" ► awsSecretKey=" $IAM_SECRET_KEY " ► table=“Tomcat_SessionState" ► regionId="ap-northeast-2" ► createIfNotExist="true" /> /home/ec2-user/apps/tomcat/conf/context.xml
- 7. Q&A