Chapter 4. Configuring the Management CLI

JBoss EAP supports the use of preset element and property expressions in the management CLI. These expressions will be resolved to their defined values during the execution of the command.

You can substitute expressions for the following properties:

By default, the management CLI performs property substitution for every line except for argument or parameter values. Argument and parameter values are resolved in the server at runtime. If you require property substitution for argument or parameter values to occur in the management CLI and have it send the resolved values to the server, complete the following steps.

This element only affects operation request parameter values and command argument values. It does not impact the rest of the command line. This means system properties present on the command line will be resolved during the parsing of the line regardless of what the value of resolve-parameter-values element is, unless it is a parameter/argument value.

System property values used in management CLI commands must have already been defined in order to be resolved. You must either pass in a properties file (--properties=/path/to/file.properties) or property value pairs (-Dkey=value) when starting your management CLI instance. The properties file uses a standard KEY=VALUE syntax.

Property keys are denoted in your management CLI commands using the ${MY_VAR} syntax, for example:

/host=${hostname}/server-config=${servername}:add(group=main-server-group)

See Configuring the Management CLI for other jboss-cli.xml configuration options.

You can define aliases for the CLI commands and operations during a CLI session using the alias command.

The following example creates a new CLI command alias named read_undertow to read the resources in the undertow subsystem using the alias command:

alias read_undertow='/subsystem=undertow:read-resource'

To test the creation of read_undertow alias, type the alias name in the management CLI:

read_undertow

The result will be:

{
    "outcome" => "success",
    "result" => {
        "default-security-domain" => "other",
        "default-server" => "default-server",
        "default-servlet-container" => "default",
        "default-virtual-host" => "default-host",
        "instance-id" => expression "${jboss.node.name}",
        "statistics-enabled" => false,
        "buffer-cache" => {"default" => undefined},
        "configuration" => {
            "filter" => undefined,
            "handler" => undefined
        },
        "server" => {"default-server" => undefined},
        "servlet-container" => {"default" => undefined}
    }
}

To view a list of all available aliases, use the alias command:

alias

The result will be:

alias read_undertow='/subsystem=undertow:read-resource'

To remove an alias, use the unalias command:

unalias read_undertow

JBoss EAP contains the runtime configuration .jbossclirc file, which helps you to initialize the environment when a new session is launched. This file is located in EAP_HOME/bin/ directory. The example provided in the file can be used as a template for user-specific environment setup. The .jbossclirc file is ideal for storing global CLI variables.

The content of the .jbossclirc file is a list of CLI supported commands and operations. This file is executed when a new management CLI session is launched but before the control is given to the user. If there are system properties specified with --properties argument, then the .jbossclirc file is executed after the properties have been set.

Example .jbossclirc File

set console=/subsystem=logging/console-handler=CONSOLE

The following locations will be checked for the presence of the .jbossclirc file in the following order:

Using the Set Command

You can define a certain path of the server model to a variable using the set command. For example:

set s1=/host=master/server=server-one

This is useful in a managed domain as you can include references to host and profiles using variables to easily replicate scripts on different servers. For example:

$s1/subsystem=datasources/data-source=ExampleDS:test-connection-in-pool

Using the Unset Command

You can remove the variable by using the unset command:

unset prod_db

Using the jbossclirc File

To use the variable across CLI session, you can include these variables in the .jbossclirc file. This file is located in the EAP_HOME/bin/ directory.

For example:

set s1=/host=master/server=server-one
set s2=/host=master/server=server-two

Now, restart the management CLI and issue a set command to check the available variables:

set

The output will be:

s1=/host=master/server=server-one
s2=/host=master/server=server-two

The variables may appear in any part of a command line and resolved during the command line parsing phase. In this example, the prod_db variable will be resolved to a datasource:

$prod_db/statistics=jdbc:read-resource

Using the Echo Command

Use the echo command to check the value of a variable:

echo $prod_db

The output will be:

/subsystem=datasources/data-source=ExampleDS

Example

The following general examples show where the variables may appear and that the entire command line may consist of variables:

$prod_db:$op($param=$param_value)
$cmd --$param=$param_value