Red Hat Summit 红帽全球峰会支持控制台（Console）开发人员开始试用联系人

此内容没有您所选择的语言版本。

Chapter 10. Managing Child Containers

Abstract

A child container is a container that shares a common Red Hat JBoss Fuse runtime with a parent container, but has its own configuration files, runtime information, logs and temporary files. The child container functions as an independent container into which you can deploy bundles.

10.1. Standalone Child Containers
复制链接

Using the admin console commands
复制链接

The admin console commands allow you to create and manage instances of the JBoss Fuse runtime on the same machine. Each new runtime is a child instance of the runtime that created it. You can easily manage the children using names instead of network addresses. For details on the admin commands, see Admin Console Commands.

Creating child containers
复制链接

You create a new runtime container by typing admin:create in the JBoss Fuse console.
As shown in Example 10.1, “Creating a Runtime Instance”, admin:create causes the container to create a new child container in the active container's instances/containerName directory. The child container is assigned an SSH port number based on an incremental count starting at 8101. Creating a container this way does not inherit configuration information from the parent; any feature repositories and features needed from the parent will have to be manually added to the child.

Example 10.1. Creating a Runtime Instance

FuseESB@root>admin:create finn
Creating new instance on port 8106 at: /home/fuse/esb4/instances/finn Creating dir: /home/fuse/esb4/instances/finn/bin Creating dir: /home/fuse/esb4/instances/finn/etc Creating dir: /home/fuse/esb4/instances/finn/system Creating dir: /home/fuse/esb4/instances/finn/deploy Creating dir: /home/fuse/esb4/instances/finn/data Creating file: /home/fuse/esb4/instances/finn/etc/config.properties Creating file: /home/fuse/esb4/instances/finn/etc/java.util.logging.properties Creating file: /home/fuse/esb4/instances/finn/etc/org.apache.felix.fileinstall-deploy.cfg Creating file: /home/fuse/esb4/instances/finn/etc/org.apache.karaf.log.cfg Creating file: /home/fuse/esb4/instances/finn/etc/org.apache.karaf.features.cfg Creating file: /home/fuse/esb4/instances/finn/etc/org.apache.karaf.management.cfg Creating file: /home/fuse/esb4/instances/finn/etc/org.ops4j.pax.logging.cfg Creating file: /home/fuse/esb4/instances/finn/etc/org.ops4j.pax.url.mvn.cfg Creating file: /home/fuse/esb4/instances/finn/etc/startup.properties Creating file: /home/fuse/esb4/instances/finn/etc/system.properties Creating file: /home/fuse/esb4/instances/finn/etc/org.apache.karaf.shell.cfg Creating file: /home/fuse/esb4/instances/finn/bin/karaf Creating file: /home/fuse/esb4/instances/finn/bin/start Creating file: /home/fuse/esb4/instances/finn/bin/stop
Copy to Clipboard Toggle word wrap

Cloning a container
复制链接

To create a new container which is a direct copy of its parent, use the admin:clone command. The only difference between parent and child is the port number they listen on.

Changing a child's SSH port
复制链接

You can change the SSH port number assigned to a child container using the admin:change-port command. The syntax for the command is:

admin:change-port { containerName } { portNumber }

Important
You can only use the admin:change-port command on stopped containers.

Starting child containers
复制链接

New containers are created in the stopped state. To start a child container and make it ready to host applications, use the admin:start command. This command takes a single argument, containerName, that identifies the child you want started.

Listing all child containers
复制链接

To see a list of all the JBoss Fuse containers running under a particular installation, use the admin:list command:

Example 10.2. Listing Instances

JBossFuse:karaf@root>admin:list
  Port State Pid Name [ 8107] [Started ] [10628] harry [ 8101] [Started ] [20076] root [ 8106] [Started ] [15924] dick [ 8105] [Started ] [18224] tom
Copy to Clipboard Toggle word wrap

Connecting to a child container
复制链接

You can connect to a started child container's remote console using the admin:connect command.As shown in Example 10.3, “Admin connect Command”, this command takes three arguments:

Example 10.3. Admin connect Command

admin:connect { containerName } { -u username } { -p password }

containerName
The name of the child to which you want to connect.
-u username
The username used to connect to the child's remote console. Use valid JAAS user credentials that have admin privileges (see Chapter 15, Configuring JAAS Security).
-p password
This argument specifies the password used to connect to the child's remote console.
Once you are connected to the child container., the prompt changes to display the name of the current instance, as shown: 
JBossFuse:karaf@harry>
Copy to Clipboard Toggle word wrap

Stopping a child container
复制链接

To stop a child container, from within the container itself, type osgi:shutdown or simply shutdown.
To stop a child container remotely—in other words, from a parent or sibling instance—type admin:stop containerName.

Destroying a child container
复制链接

You can permanently delete a stopped child container using the admin:destroy containerName command.
Important
You can only remove stopped children.

Changing the JVM options on a child container
复制链接

To change the Java options in a child instance, use the admin:change-opts command. For example, you could change the amamount of memory allocated to the child container's JVM, as follows: 
JBossFuse:karaf@harry> admin:change-opts tom "-server -Xms128M -Xmx1345m -Dcom.sun.management.jmxremote"
Copy to Clipboard Toggle word wrap
These changes will take effect when you restart the child container.

Using the admin script
复制链接

You can also use manage a JBoss Fuse container running in server mode without starting a new instance of the runtime. The admin script in the InstallDir/bin directory provides the all of the admin console commands except for admin:connect.

Example 10.4. The admin Script

admin.bat: Ignoring predefined value for KARAF_HOME Available commands: change-port - Changes the port of an existing container instance. create - Creates a new container instance. destroy - Destroys an existing container instance. list - List all existing container instances. start - Starts an existing container instance. stop - Stops an existing container instance. Type 'command --help' for more help on the specified command.
Copy to Clipboard Toggle word wrap
For example, to list all of the JBoss Fuse containers on your host machine, type:
Windows 
admin.bat list
Copy to Clipboard Toggle word wrap
*NIX 
./admin list
Copy to Clipboard Toggle word wrap
返回顶部
Red Hat logoGithubredditYoutubeTwitter

学习

尝试、购买和销售

社区

关于红帽文档

通过我们的产品和服务，以及可以信赖的内容，帮助红帽用户创新并实现他们的目标。 了解我们当前的更新.

让开源更具包容性

红帽致力于替换我们的代码、文档和 Web 属性中存在问题的语言。欲了解更多详情，请参阅红帽博客.

關於紅帽

我们提供强化的解决方案，使企业能够更轻松地跨平台和环境（从核心数据中心到网络边缘）工作。

Theme

© 2025 Red Hat