25.2.3.12. 群集的受管域
25.2.3.12.1. 启动一个实例作为群集域控制器
概述
本节涵盖在 Red Hat AMI(Amazon Machine Image)上启动群集 JBoss EAP 6 受管域的步骤。
必须具备的条件
- 合适的 Red Hat AMI。请参考 第 25.1.6 节 “受支持的 Red Hat AMI” 。
过程 25.15. 启动群集域控制器
- 为这个实例创建一个有弹性的 IP 地址。
- 选择 AMI
- 进入 Security Group 并允许所有流量(如果需要的话用 Red Hat 企业版 Linux 的内置防火墙功能来限制访问)。
- 在 VPC 的公共子网里选择 "running"。
- 选择一个静态 IP(如:
10.0.0.5)。 - 在『User Data』字段添加下列内容:
## mod cluster proxy addresses MOD_CLUSTER_PROXY_LIST=10.0.0.4:7654 ## password that will be used by slave host controllers to connect to the domain controller JBOSSAS_ADMIN_PASSWORD=<password for slave host controllers> ## subnet prefix this machine is connected to SUBNET=10.0.0. ## S3 domain controller discovery setup # JBOSS_DOMAIN_S3_SECRET_ACCESS_KEY=<your secret key> # JBOSS_DOMAIN_S3_ACCESS_KEY=<your access key> # JBOSS_DOMAIN_S3_BUCKET=<your bucket name> #### to run the example no modifications below should be needed #### JBOSS_DOMAIN_CONTROLLER=true PORTS_ALLOWED="9999 9990 9443" JBOSS_IP=`hostname | sed -e 's/ip-//' -e 'y/-/./'` #listen on public/private EC2 IP address cat > $USER_SCRIPT << "EOF" ## Get the application to be deployed from an Internet URL # mkdir -p /usr/share/java/jboss-ec2-eap-applications # wget https://<your secure storage hostname>/<path>/<app name>.war -O /usr/share/java/jboss-ec2-eap-applications/<app name>.war ## Install the JDBC driver as a core module yum -y install mysql-connector-java mkdir -p /usr/share/jbossas/modules/com/mysql/main cp -v /usr/share/java/mysql-connector-java-*.jar /usr/share/jbossas/modules/com/mysql/main/mysql-connector-java.jar cat > /usr/share/jbossas/modules/com/mysql/main/module.xml <<"EOM" <?xml version="1.0" encoding="UTF-8"?> <module xmlns="urn:jboss:module:1.0" name="com.mysql"> <resources> <resource-root path="mysql-connector-java.jar"/> </resources> <dependencies> <module name="javax.api"/> </dependencies> </module> EOM cat > $USER_CLI_COMMANDS << "EOC" ## Deploy the sample application from the local filesystem deploy /usr/share/java/jboss-ec2-eap-samples/cluster-demo.war --server-groups=other-server-group ## ExampleDS configuration for MySQL database data-source --profile=mod_cluster-ec2-ha remove --name=ExampleDS /profile=mod_cluster-ec2-ha/subsystem=datasources/jdbc-driver=mysql:add(driver-name="mysql",driver-module-name="com.mysql") data-source --profile=mod_cluster-ec2-ha add --name=ExampleDS --connection-url="jdbc:mysql://${db.host}:3306/${db.database}" --jndi-name=java:jboss/datasources/ExampleDS --driver-name=mysql --user-name="${db.user}" --password="${db.passwd}" /profile=mod_cluster-ec2-ha/subsystem=datasources/data-source=ExampleDS:enable EOC ## this will workaround the problem that in a VPC, instance hostnames are not resolvable echo -e "127.0.0.1\tlocalhost.localdomain localhost" > /etc/hosts echo -e "::1\tlocalhost6.localdomain6 localhost6" >> /etc/hosts for (( i=1 ; i<255 ; i++ )); do echo -e "$SUBNET$i\tip-${SUBNET//./-}$i" ; done >> /etc/hosts EOF 对于产品实例
对于产品实例,在User Data字段的USER_SCRIPT行下面添加下列内容,确保在引导时进行安全更新。yum -y update
注意
yum -y update应该经常运行以应用安全修复和增强。- 启动 Red Hat AMI 实例。
结果
已在 Red Hat AMI 上配置并启动群集的 JBoss EAP 6 受管域。