Server CLI Reference
NOTE: This document is for information on starting a Brooklyn Server. For information on using the Brooklyn Client CLI to access an already running Brooklyn Server, refer to Client CLI Reference.
To launch Brooklyn, from the directory where Brooklyn is unpacked, run:
% nohup bin/brooklyn launch > /dev/null 2>&1 &
With no configuration, this will launch the Brooklyn web console and REST API on
No password is set, but the server is listening only on the loopback network interface for security.
Once security is configured, Brooklyn will listen on all network interfaces by default.
By default, Brooklyn will write log messages at the INFO level or above to
brooklyn.info.log and messgages at the
DEBUG level or above to
brooklyn.debug.log. Redirecting the output to
/dev/null prevents the default console output
being written to
You may wish to add Brooklyn to your path;
assuming you’ve done this, to get information the supported CLI options
at any time, just run
% bin/brooklyn help usage: brooklyn [(-q | --quiet)] [(-v | --verbose)] <command> [<args>] The most commonly used brooklyn commands are: help Display help information about brooklyn info Display information about brooklyn launch Starts a brooklyn application. Note that a BROOKLYN_CLASSPATH environment variable needs to be set up beforehand to point to the user application classpath. See 'brooklyn help <command>' for more information on a specific command.
It is important that Brooklyn is launched with either
nohup ... & or
... & disown, to ensure
it keeps running after the shell terminates.
Other Server CLI Arguments
In order to have easy access to the server cli it is useful to configure the PATH environment variable to also point to the cli’s bin directory:
BROOKLYN_HOME=/path/to/brooklyn/ export PATH=$PATH:$BROOKLYN_HOME/usage/dist/target/brooklyn-dist/bin/
The amount of memory required by the Brooklyn process depends on the usage – for example the number of entities/VMs under management.
For a standard Brooklyn deployment, the defaults are to start with 256m, and to grow to 1g of memory.
These numbers can be overridden by setting the environment variable
JAVA_OPTS before launching
brooklyn script, as follows:
JAVA_OPTS="-Xms1g -Xmx4g -XX:MaxPermSize=256m"
(On Java 8 and later the last entry has no effect and can be dropped.)
Brooklyn stores a task history in-memory using soft references. This means that, once the task history is large, Brooklyn will continually use the maximum allocated memory. It will only expunge tasks from memory when this space is required for other objects within the Brooklyn process.
See Memory Usage for more information on memory usage and
Web Console Bind Address
The web console will by default bind to 0.0.0.0. It’s restricted to 127.0.0.1 if the
--noConsoleSecurity flag is used.
To specify a local interface, or use the local loopback (127.0.0.1), for the web console to bind to you should use:
Brooklyn reads configuration from a variety of places. It aggregates the configuration. The list below shows increasing precedence (i.e. the later ones will override values from earlier ones, if exactly the same property is specified multiple times).
classpath://brooklyn/location-metadata.propertiesis shipped as part of Brooklyn, containing generic metadata such as jurisdiction and geographic information about Cloud providers.
- The file
--noGlobalBrooklynPropertiesis specified). This is intended to contain custom metadata about additional locations.
- The file
- Another properties file, if the
--localBrooklynProperties <local brooklyn.properties file>is specified.
- Shell environment variables
- System properties, supplied with
-Don the brooklyn (Java) command-line.
These properties are described in more detail here.
Extending the Classpath
The default Brooklyn directory structure includes:
./conf/: for configuration resources.
./lib/patch/: for Jar files containing patches.
./lib/brooklyn/: for the brooklyn libraries.
./lib/dropins/: for additional Jars.
Resources added to
conf/ will be available on the classpath.
A patch can be applied by adding a Jar to the
lib/patch/ directory, and restarting Brooklyn.
All jars in this directory will be at the head of the classpath.
Additional Jars should be added to
lib/dropins/, prior to starting Brooklyn. These jars will
be at the end of the classpath.
The initial classpath, as set in the
brooklyn script, is:
Additional entries can be added at the head of the classpath by setting the environment variable
BROOKLYN_CLASSPATH before running the
Replacing the web-console
Work in progress.
The Brooklyn web-console is loaded from the classpath as the resource
To replace this, an alternative WAR with that name can be added at the head of the classpath. However, this approach is likely to change in a future release - consider this feature as “beta”.
brooklyn command line tool includes support for querying (and managing) cloud
compute resources and blob-store resources.
brooklyn cloud-compute list-instances --location aws-ec2:eu-west-1
will use the AWS credentials from
brooklyn.properties and list the VM instances
running in the given EC2 region.
brooklyn help and
brooklyn help cloud-compute to find out more information.
This functionality is not intended as a generic cloud management CLI, but instead
solves specific Brooklyn use-cases. The main use-case is discovering the valid
configuration options on a given cloud, such as for
brooklyn cloud-compute has the following options:
list-images: lists VM images within the given cloud, which can be chosen when provisioning new VMs. This is useful for finding the possible values for the
get-image <imageId1> <imageId2> ...: retrieves metadata about the specific images.
list-hardware-profiles: lists the ids and the details of the hardware profiles available when provisioning. This is useful for finding the possible values for the
default-template: retrieves metadata about the image and hardware profile that will be used by Brooklyn for that location, if no additional configuration options are supplied.
list-instances: lists the VM instances within the given cloud.
terminate-instances <instanceId1> <instanceId2> ...: Terminates the instances with the given ids.
brooklyn cloud-blobstore is used to access a given object store, such as S3
or Swift. It has the following options:
list-containers: lists the containers (i.e. buckets in S3 terminology) within the given object store.
list-container <containerName>: lists all the blobs (i.e. objects) contained within the given container.
blob --container <containerName> --blob <blobName>: retrieves the given blob (i.e. object), including metadata and its contents.