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Chapter 2. Installing the Middleware Management Server
The Red Hat Middleware Management installation consists of two Linux container images.
Do not perform the installation as the ROOT user; create a non-root user.
2.1. Install and Configure Cassandra
The middleware management services require a running Cassandra instance.
Run the Cassandra container and configure the Cassandra data location. By default the Cassandra container creates a volume under /opt/apache-cassandra/data. This container directory automatically maps to a unique local directory which you can view using
docker inspect <container-id>. You can use the-voption to map the Cassandra data volume to a specific host directory.ImportantCASSANDRA_START_RPCmust be set totrue. If this option is set tofalsethe middleware manager services cannot connect to Cassandra.NoteThe
Zoption is necessary on Red Hat Enterprise Linux/Fedora based systems to correctly set the SELinux permissions.docker run --name mwmanager-cassandra -d -e CASSANDRA_START_RPC=true -v /var/mydatastore:/opt/apache-cassandra/data:Z registry.access.redhat.com/jboss-mm-7-tech-preview/middleware-manager-datastore:latestVerify that the server is running.
docker psResult
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 34a75ba45be8 registry.access.redhat.com/jboss-mm-7-tech-preview/middleware-manager-datastore:latest "/docker-entrypoint.s" 44 seconds ago Up 44 seconds 7000-7001/tcp, 7199/tcp, 9042/tcp, 9160/tcp mwmanager-cassandraView the node information.
docker exec -it <container_id> /opt/apache-cassandra/bin/nodetool info
2.1.1. Running Cassandra with a Non-default User
You can run the Cassandra container with an arbitrary user ID, however, that user must have permissions to write to the Cassandra data volume.
The Z option is necessary on Red Hat Enterprise Linux/Fedora based systems to correctly set the SELinux permissions.
chown myuser:myuser /var/mydatastore
docker run --name mwmanager-cassandra -d -e CASSANDRA_START_RPC=true --user $(id -u myuser) -v /var/mydatastore:/opt/apache-cassandra/data:Z registry.access.redhat.com/jboss-mm-7-tech-preview/middleware-manager-datastore:latest2.2. Starting the Middleware Manager Services
Start the mwmanager-services and link it to the running Cassandra instance. By default the middleware manager container creates a volume under /var/opt/hawkular/data. As with the Cassandra container, you can use the
-voption to map the middleware manager data volume to a specific host directory.NoteThe
Zoption is necessary on Red Hat Enterprise Linux/Fedora based systems to correctly set the SELinux permissions.docker run -d --link=mwmanager-cassandra \ -e CASSANDRA_NODES=mwmanager-cassandra \ -e HAWKULAR_BACKEND=remote \ -p 8080:8080 -p 8443:8443 -p 9990:9990 \ -v /var/opt/mwmanager-data:/var/opt/hawkular/data:Z registry.access.redhat.com/jboss-mm-7-tech-preview/middleware-manager:latestRun the Middleware Manager container and tell it to connect to Cassandra. If desired, you can specify a combination of username/password for
HAWKULAR_USERandHAWKULAR_PASSWORD. If you do not specify a user name and password, one will be automatically generated when you start the container.docker run --name mwmanager -d \ -e HAWKULAR_BACKEND=remote \ -e CASSANDRA_NODES=mwmanager-cassandra \ -e HAWKULAR_USE_SSL=true \ -e HAWKULAR_USER=my_mwmanager_username \ -e HAWKULAR_PASSWORD=my_mwmanager_password \ -p 8080:8080 -p 8443:8443 -p 9990:9990 \ --link=mwmanager-cassandra \ registry.access.redhat.com/jboss-mm-7-tech-preview/middleware-manager:latestExpand Table 2.1. Service Options Name Default Description CASSANDRA_NODESmyCassandra
The host name or IP of Cassandra
DB_TIMEOUT-
If set, will wait for specified number of seconds for Cassandra to start and become ready before starting the middleware management services.
HAWKULAR_BACKENDremote
Indicates that the middleware manager services connects to a Cassandra server that is installed remotely.
HAWKULAR_METRICS_TTL17
HAWKULAR_USERUser name for the new user. If you do not specify a user name, one will be automatically generated. To view the generated user name, run the following command:
docker exec <containerID> bash -c 'echo "$HAWKULAR_USER"'HAWKULAR_PASSWORDPassword for the new user. If you do not specify a password, one will be automatically generated. To view the generated password, run the following command:
docker exec <containerID> bash -c 'echo "$HAWKULAR_PASSWORD"'HAWKULAR_USE_SSLfalse
Whether to use secure socket layer (SSL) to establish an encrypted link between CloudForms and the middleware manager server.
- Verify the middleware management installation by launching a browser and navigating to http://my_mwmanager_host:8080/. After a minute or two, you should see the middleware manager status page.
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