Running Apache Atlas standalone - apache-atlas

Question

I am trying to run Apache Atlas in a standalone fashion on Ubuntu - meaning without having to setup Solr and/or HBase.
What I did (according to the documentation: http://atlas.apache.org/0.8.1/InstallationSteps.html) was cloning the Git repository, build the maven project with embadded HBase an dSolr:
mvn clean package -Pdist,embedded-hbase-solr
Unpacked the resuting tar.gz file and executed bin/atlas_start.py - without having changed any configuration. To my understanding of the documentatino that should actually start up HBase along with Atlas - right?
The is what I find in logs/applocation.log:
2017-11-30 17:14:24,093 INFO - [main:] ~ >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> (Atlas:216)
2017-11-30 17:14:24,093 INFO - [main:] ~ Server starting with TLS ? false on port 21000 (Atlas:217)
2017-11-30 17:14:24,093 INFO - [main:] ~ <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< (Atlas:218)
2017-11-30 17:14:27,684 INFO - [main:] ~ No authentication method configured. Defaulting to simple authentication (LoginProcessor:102)
2017-11-30 17:14:28,527 INFO - [main:] ~ Logged in user daniel (auth:SIMPLE) (LoginProcessor:77)
2017-11-30 17:14:31,777 INFO - [main:] ~ Not running setup per configuration atlas.server.run.setup.on.start. (SetupSteps$SetupRequired:189)
2017-11-30 17:14:39,456 WARN - [main-SendThread(localhost:2181):] ~ Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect (ClientCnxn$SendThread:110$
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
2017-11-30 17:14:39,594 WARN - [main:] ~ Possibly transient ZooKeeper, quorum=localhost:2181, exception=org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = Connecti$
2017-11-30 17:14:40,593 WARN - [main-SendThread(localhost:2181):] ~ Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect (ClientCnxn$SendThread:110$
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
...
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
2017-11-30 17:14:56,185 WARN - [main:] ~ Possibly transient ZooKeeper, quorum=localhost:2181, exception=org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = Connecti$
2017-11-30 17:14:56,186 ERROR - [main:] ~ ZooKeeper exists failed after 4 attempts (RecoverableZooKeeper:277)
2017-11-30 17:14:56,186 WARN - [main:] ~ hconnection-0x1dba4e060x0, quorum=localhost:2181, baseZNode=/hbase Unable to set watcher on znode (/hbase/hbaseid) (ZKUtil:544)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:221)
at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:541)
at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
To me it reads as if no HBase (and Zookeeper) are started by the script.
Am I missing something?
Thanks for your hints!

Answer 1

OK, meanwhile I figured out the issue. The start script obviously does not execute the script conf/atlas-env.sh which sets some environment variable. Among this are MANAGE_LOCAL_HBASE and MANAGE_LOCAL_SOLR. So if you set those two env vars to true (and set JAVA_HOME properly which is needed for the embedded HBase), then Atlas automatically starts HBase and Solr - and we get a local running instance of Atlas!
Maybe this helps someone who comes across the same issue in future!

Answer 2

Update March 2021
There are two ways of running apache atlas:
A) Building it from scratch:
git clone https://github.com/apache/atlas
mvn clean install -DskipTests
mvn clean package -Pdist -DskipTests
Running atlas_start.py:
python <atlas-directory>/conf/atlas_start.py
B) Using docker image:
docker-compose.yml
version: "3.3"
services:
atlas:
image: sburn/apache-atlas
container_name: atlas
ports:
- "21000:21000"
volumes:
- "./bash_script:/app"
command: bash -exc "/opt/apache-atlas-2.1.0/bin/atlas_start.py"
docker-compose up