Ambari Development

Checking out Ambari source

Follow the instructions under Checkout source code section of “How to contribute” guide.

We'll refer to the top-level “ambari” directory as AMBARI_DIR in this document.

Tools needed to build Ambari

The following tools are needed to build Ambari from source.

Alternatively, you can easily launch a VM that is preconfigured with all the tools that you need. See the Pre-Configured Development Environment section in the Quick Start Guide.

xCode (if using Mac - free download from the apple store)
JDK 8 (Ambari 2.6 and below can be compiled with JDK 7, from Ambari 2.7, it can be compiled with at least JDK 8)
Apache Maven 3.3.9 or later Tip:In order to persist your changes to the JAVA_HOME environment variable and add Maven to your path, create the following files: File: ~/.profile

source ~/.bashrc

File: ~/.bashrc

export PATH=/usr/local/apache-maven-3.3.9/bin:$PATH
export JAVA_HOME=$(/usr/libexec/java_home)
export _JAVA_OPTIONS="-Xmx2048m -XX:MaxPermSize=512m -Djava.awt.headless=true"

Python 2.6 (Ambari 2.7 or later require Python 2.7 as minimum supported version)
Python setuptools: for Python 2.6: D ownload setuptools and run:

sh setuptools-0.6c11-py2.6.egg

for Python 2.7: D ownload setuptools and run:

sh setuptools-0.6c11-py2.7.egg

rpmbuild (rpm-build package)
g++ (gcc-c++ package)

Running Unit Tests

mvn clean test
Run unit tests in a single module:

mvn -pl ambari-server test

Run only Java tests:

mvn -pl ambari-server -DskipPythonTests

Run only specific Java tests:

mvn -pl ambari-server -DskipPythonTests -Dtest=AgentHostInfoTest test

Run only Python tests:

mvn -pl ambari-server -DskipSurefireTests test

Run only specific Python tests:

mvn -pl ambari-server -DskipSurefireTests -Dpython.test.mask=TestUtils.py test

Run only Checkstyle and RAT checks:

mvn -pl ambari-server -DskipTests test

NOTE: Please make sure you have npm in the path before running the unit tests.

Generating Findbugs Report

mvn clean install

This will generate xml and html report unders target/findbugs. You can also add flags to skip unit tests to generate report faster.

Building Ambari

Note: if you can an error that too many files are open while building, then run: ulimit -n 10000 (for example)

To build Ambari RPMs, run the following.

Note: Replace ${AMBARI_VERSION} with a 4-digit version you want the artifacts to be (e.g., -DnewVersion=1.6.1.1)

Note: If running into errors while compiling the ambari-metrics package due to missing the artifacts of jms, jmxri, jmxtools:

[ERROR] Failed to execute goal on project ambari-metrics-kafka-sink: Could not resolve dependencies for project org.apache.ambari:ambari-metrics-kafka-sink:jar:2.0.0-0: The following artifacts could not be resolved: javax.jms:jms:jar:1.1, com.sun.jdmk:jmxtools:jar:1.2.1, com.sun.jmx:jmxri:jar:1.2.1: Could not transfer artifact javax.jms:jms:jar:1.1 from/to java.net (https://maven-repository.dev.java.net/nonav/repository): No connector available to access repository java.net (https://maven-repository.dev.java.net/nonav/repository) of type legacy using the available factories WagonRepositoryConnectorFactory

The work around is to manually install the three missing artifacts:

mvn install:install-file -Dfile=jms-1.1.pom -DgroupId=javax.jms -DartifactId=jms -Dversion=1.1 -Dpackaging=jar
mvn install:install-file -Dfile=jmxtools-1.2.1.pom -DgroupId=com.sun.jdmk -DartifactId=jmxtools -Dversion=1.2.1 -Dpackaging=jar
mvn install:install-file -Dfile=jmxri-1.2.1.pom -DgroupId=com.sun.jmx -DartifactId=jmxri -Dversion=1.2.1 -Dpackaging=jar

If when compiling it seems stuck, and you've already increased Java and Maven heapsize, it could be that Ambari Views has a lot of artifacts, and the rat-check is choking up. In this case, try running

git clean -df (this will remove untracked files and directories)
mvn clean package -DskipTests -Drat.ignoreErrors=true
or
mvn clean package -DskipTests -Drat.skip

Setting the Version Using Maven

Ambari 2.8+ uses a newer method to update the version when building Ambari.

RHEL/CentOS 6:

# Update the revision property to the release version
mvn versions:set-property -Dproperty=revision -DnewVersion=2.8.0.0.0
 
mvn -B clean install package rpm:rpm -DskipTests -Dpython.ver="python >= 2.6" -Preplaceurl

SUSE/SLES 11

# Update the revision property to the release version
mvn versions:set-property -Dproperty=revision -DnewVersion=2.8.0.0.0
  
mvn -B clean install package rpm:rpm -DskipTests -Psuse11 -Dpython.ver="python >= 2.6" -Preplaceurl

Ubuntu 12:

# Update the revision property to the release version
mvn versions:set-property -Dproperty=revision -DnewVersion=2.8.0.0.0
  
mvn -B clean install package jdeb:jdeb -DskipTests -Dpython.ver="python >= 2.6" -Preplaceurl

Ambari Server will create following packages

RPM will be created under AMBARI_DIR/ambari-server/target/rpm/ambari-server/RPMS/noarch.
DEB will be created under AMBARI_DIR/ambari-server/target/

Ambari Agent will create following packages

RPM will be created under AMBARI_DIR/ambari-agent/target/rpm/ambari-agent/RPMS/x86_64.
DEB will be created under AMBARI_DIR/ambari-agent/target

Optional parameters:

-X -e: add these options for more verbose output by Maven. Useful when debugging Maven issues.
-DdefaultStackVersion=STACK-VERSION
Sets the default stack and version to be used for installation (e.g., -DdefaultStackVersion=HDP-1.3.0)
-DenableExperimental=true
Enables experimental features to be available via Ambari Web (default is false)
All views can be packaged in RPM by adding -Dviews parameter
- mvn -B clean install package rpm:rpm -Dviews -DskipTests
Specific views can be built by adding --projects parameter to the -Dviews
- mvn -B clean install package rpm:rpm --projects ambari-web,ambari-project,ambari-views,ambari-admin,contrib/views/files,contrib/views/pig,ambari-server,ambari-agent,ambari-client,ambari-shell -Dviews -DskipTests

NOTE: Run everything as root below.

Building Ambari Metrics

If you plan on installing the Ambari Metrics service, you will also need to build the Ambari Metrics project.

cd ambari-metrics
mvn clean package -Dbuild-rpm -DskipTests

For Ubuntu:
cd ambari-metrics
mvn clean package -Dbuild-deb -DskipTests

Note:

The metrics rpms will be found at: ambari-metrics-assembly/target/. These would be need for installing the Ambari Metrics service.

Running the Ambari Server

First, install the Ambari Server RPM.

On RHEL/CentOS:

yum install ambari-server/target/rpm/ambari-server/RPMS/noarch/ambari-server-*.noarch.rpm

On SUSE/SLES:

zypper install ambari-server/target/rpm/ambari-server/RPMS/noarch/ambari-server-*.noarch.rpm

On Ubuntu 12:

dpkg --install ambari-server/target/ambari-server-*.deb          # Will fail with missing dependencies errors
apt-get update                                                   # Update locations of dependencies
apt-get install -f                                               # Install all failed dependencies
dpkg --install ambari-server/target/ambari-server-*.deb          # Will succeed

Initialize Ambari Server:

ambari-server setup

Start up Ambari Server:

ambari-server start

See Ambari Server log:

tail -f /var/log/ambari-server/ambari-server.log

To access Ambari, go to

http://{ambari-server-hostname}:8080

from your web browser and log in with username admin and password admin.

Install and Start the Ambari Agent Manually on Each Host in the Cluster

Install the Ambari Agent RPM.

On RHEL/CentOS:

SUSE/SLES:

zypper install ambari-agent/target/rpm/ambari-agent/RPMS/x86_64/ambari-agent-*.rpm

Ubuntu12:

dpkg --install ambari-agent/target/ambari-agent-*.deb

Edit the location of Ambari Server in /etc/ambari-agent/conf/ambari-agent.ini by editing the hostname line.

Start Ambari Agent:

ambari-agent start

See Ambari Agent log:

tail -f /var/log/ambari-agent/ambari-agent.log

Setting up Ambari in Eclipse

$ mvn clean eclipse:eclipse

After doing the above you should be able to import the project via Eclipse “Import > Maven > Existing Maven Project”. Choose the root directory where you cloned the git repository. You should be able to see the following projects on eclipse:

ambari
|
|- ambari-project
|- ambari-server
|- ambari-agent
|- ambari-web

Select the top-level “ambari pom.xml” and click Finish.