Blynk Server Issue

Blynk Servers Local Blynk Server
1

Hi, everyone.
I am trying to install local server.
I download the server-0.7.1.jar from https://github.com/blynkkk/blynk-server/releases.
Then I am install Java on Linux following instructions on GitHub page.
After that I tried to install server and I could’t do it.

Now the problem

I moved server-0.7.1.jar in /var/www/blynk and in command line I wrote “java -jar /var/www/blynk/server-0.7.1.jar” and nothing happened. Then I am cancel that action(ctrl+c) and there was an error “2015-07-30 11:51:51,518 FATAL Ignoring log event after log4j was shut down”.
And now I don’t know what to do.

2

That’s ok. By default all logging is happens in same dir within “logs” folder, so you should see no output to console. So in other words you launched server successfully =). just check folder ./logs/blynk.log

And of course after ctrl+c you have to launch server again.

3

If you launch it using

java -jar /path/to/server.jar &

It will run in the background. You can check if it’s running with

ps -ef | grep jar

You’ll see it is running.

4

OK.
I caught it. Thx a lot!

I understand that when I close server’s command line with active line (“java -jar /var/www/blynk/server-0.7.1.jar”) then the blynk-server shuts down.

But how I can start my server automatically? I mean without opening command line and input the line above.

5

Yes. To avoid that you could use “screen” command with “&”.

But how I can start my server automatically? I mean without opening command line and input the line above.

Please google it with “linux autorun” :wink:

6

Thanks for your lightning responses!

Now I guess server is working. But when I start its in command line I see that root@Test:~# java -jar /var/www/blynk_new/test/server-0.7.1.jar &
[4] 1920
root@Test:~# Aug 04, 2015 7:09:11 AM io.netty.util.internal.ThreadLocalRandom getInitialSeedUniquifier
WARNING: Failed to generate a seed from SecureRandom within 3 seconds. Not enough entrophy?

What could it be?

And I have another problem.

The server doesn’t save users.

7

Hm, hard to say. Is that possible you’re running few “server.jar” files at same time? Also what hardware do you use to run server?

8

I use https://www.digitalocean.com/ tariff for 5$ and it has
512MB / 1 cpu
20GB SSD Disk
1TB Transfer

Guess No.

9

What OS? I’ll try to reproduce. We run Blynk also in digital ocean and no problems there.

10

Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-32-generic x86_64)

11

Ok, thank you for reporting. Will check soon.