root@vps279283:~# service atlbitbucket start
Starting Atlassian Bitbucket as dedicated user atlbitbucket
No directory, logging in with HOME=/

Starting bundled Elasticsearch
        Hint: Run start-bitbucket.sh --no-search to skip starting Elasticsearch
Bundled Elasticsearch started successfully

Bitbucket is being run with a umask that contains potentially unsafe settings.
The following issues were found with the mask "u=rwx,g=rx,o=rx" (0022):
 - Access is allowed to 'others'. It is recommended that 'others' be denied
   all access for security reasons.
The recommended umask for Bitbucket is "u=,g=w,o=rwx" (0027) and can be
configured in _start-webapp.sh

The current open files limit is set to less than 4096
Attempting to increase limit...
        Limit increased to 4096 open files

Starting Bitbucket webapp at http://localhost:7990
The Bitbucket webapp has been started.

If you cannot access Bitbucket within 3 minutes, or encounter other issues, check the troubleshooting guide at:
https://confluence.atlassian.com/display/BitbucketServerKB/Troubleshooting+Installation
root@vps279283:~# log4j:WARN No such property [triggeringPolicy] in org.apache.log4j.DailyRollingFileAppender.
log4j:WARN No such property [rollingPolicy] in org.apache.log4j.DailyRollingFileAppender.
Exception in thread "main" BindHttpException[Failed to bind to [7992]]; nested: ChannelException[Failed to bind to: /0:0:0:0:0:0:0:1%lo:7992]; nested: BindException[Address already in use];
Likely root cause: java.net.BindException: Address already in use
        at sun.nio.ch.Net.bind0(Native Method)
        at sun.nio.ch.Net.bind(Net.java:433)
        at sun.nio.ch.Net.bind(Net.java:425)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
        at org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)
        at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:391)
        at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:315)
        at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
        at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
        at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Refer to the log for complete error details.