WARNING: Failed to accept a connection.

Hi Anton, logs give me this error and how can I solve it?

in ubuntu server

INFO|960/0|Service traccar|18-02-01 18:46:15|Feb 01, 2018 6:46:15 PM org.jboss.netty.channel.socket.nio.AbstractNioSelector
INFO|960/0|Service traccar|18-02-01 18:46:15|WARNING: Failed to accept a connection.
INFO|960/0|Service traccar|18-02-01 18:46:15|java.io.IOException: Demasiados archivos abiertos
INFO|960/0|Service traccar|18-02-01 18:46:15|   at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at org.jboss.netty.channel.socket.nio.NioServerBoss.process(NioServerBoss.java:100)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
INFO|960/0|Service traccar|18-02-01 18:46:15|   at java.lang.Thread.run(Thread.java:748)

You should read this:

https://www.traccar.org/optimization/

Thank you very much!

@jesus leguizamon

Have you fixed this issue? I am facing the same issue

@Anisha Vishnoi

Hi,
I just modified this file limits.conf

To increase the limit add following lines to "/etc/security/limits.conf":

• soft nofile 50000
• hard nofile 50000

the points must be asterisks

I have already done this but issue is not fixed.

Maybe it's something else, you can show me logs

Logs are below mentioned. and device stop responding one by one.

INEST|1286/0|Service traccar|18-09-22 18:53:14|Sep 22, 2018 6:53:14 PM org.jboss.netty.channel.socket.nio.AbstractNioSelector
FINEST|1286/0|Service traccar|18-09-22 18:53:14|WARNING: Failed to accept a connection.
FINEST|1286/0|Service traccar|18-09-22 18:53:14|java.io.IOException: Too many open files
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at org.jboss.netty.channel.socket.nio.NioServerBoss.process(NioServerBoss.java:100)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|	at java.lang.Thread.run(Thread.java:745)
FINEST|1286/0|Service traccar|18-09-22 18:53:14|
FINEST|1286/0|Service traccar|18-09-22 18:53:15|Sep 22, 2018 6:53:15 PM org.jboss.netty.channel.socket.nio.AbstractNioSelector
FINEST|1286/0|Service traccar|18-09-22 18:53:15|WARNING: Failed to accept a connection.
FINEST|1286/0|Service traccar|18-09-22 18:53:15|java.io.IOException: Too many open files
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at org.jboss.netty.channel.socket.nio.NioServerBoss.process(NioServerBoss.java:100)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
FINEST|1286/0|Service traccar|18-09-22 18:53:15|	at java.lang.Thread.run(Thread.java:745)

but you get error 500 when you enter your page? Or just device stop responding one by one?

How many devices do you have and after how much time does it give error?

just device stop responding one by one.

I have 350+ devices and it stop responding after 3-4 hrs. This problem start arsing from yesterday only.

the devices turn red or just stop sending location?

I think stop sending location. after restarting server everything works fine.