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Unable to launch Headless server on Ubuntu 20.04

CHC
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6 years 4 months ago #5241 by CHC

Unable to launch Headless server on Ubuntu 20.04 was created by CHC

Hello,

As stated in tu subject, I've installed YACReader on my new 20.04 LTS Server.
Before going to launch it automatically a service, I wanted to test it, but each time I try to launch, I have a warning.

Code:

christophe@jdrien:~/.local/share/YACReader/YACReaderLibrary$ YACReaderLibraryServer start
INFO  2020-05-22T13:51:27.262 YACReaderLibraryServer attempting to start
INFO  2020-05-22T13:51:27.262 ---------- System & configuration ----------
INFO  2020-05-22T13:51:27.262 OS: "Ubuntu 20.04 LTS" Version:  "20.04"
INFO  2020-05-22T13:51:27.263 Kernel: "linux" "5.4.0-31-generic" Architecture: "x86_64"
INFO  2020-05-22T13:51:27.263 Libraries:  QMap(("BDs", QPair(1,"/home/christophe/OneDrive/Books/BDs")))
INFO  2020-05-22T13:51:27.263 --------------------------------------------
INFO  2020-05-22T13:51:27.263 YACReaderLibrary starting
WARN  2020-05-22T13:51:27.264 QSqlDatabasePrivate::removeDatabase: connection '/home/christophe/OneDrive/Books/BDs/.yacreaderlibrary/library.ydb7fa27fa4de80' is still in use, all queries will cease to work.
^C

But it appears as running in ps -ax, then what is the meaning of the warning message ?

Code:

christophe@jdrien:~$ ps -ax | grep YAC
 545289 pts/0    S+     0:00 YACReaderLibraryServer start
 545291 pts/1    S+     0:00 grep --color=auto YAC

Anyway as I have no clue where to give the port I want it to run on, I am unable to connect from the iOS app to check if it's OK. I've tried with 8080 but no luck.

Do you know on which port it is listening ?

Regards.

CHC

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selmf
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6 years 4 months ago #5242 by selmf

Replied by selmf on topic Unable to launch Headless server on Ubuntu 20.04

The warning is caused by Luis doing something not quite right with his database code, but I gave up nagging about it years ago. You can ignore it or you can nag Luis about it

For finding the port, you can use one of these options to check for listening ports:

www.cyberciti.biz/faq/unix-linux-check-i...t-is-in-use-command/

My answers are not necessarily official YACReader statements but mostly represent my own opinion in technical matters.

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CHC
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6 years 4 months ago #5243 by CHC

Replied by CHC on topic Unable to launch Headless server on Ubuntu 20.04

Thanks for the explanation on the warning message :-)

For the port I did the netstat -tunlpv command and found the port number, now I am able to browse the Libray.
Many thanks.

A last quaestion anyway, after having rebooted my server, the ports changed.
Do you know how to fix it or do I have to recheck for the port number on each reboot (rare I hope) ?
Why not to put it in the config file where are stored the Libraries information ?

Regards,

CHC

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selmf
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6 years 4 months ago #5244 by selmf

Replied by selmf on topic Unable to launch Headless server on Ubuntu 20.04

My guess is that the server randomly chooses a port because the default one is taken or it doesn't find one in the config.

The config file should be in ~/.local/share/YACReader/YACReaderLibrary/YACReaderLibrary.ini

Search for a section called [listener] and add "port=9090" or whatever (no quotes), if it isn't present create it:

[listener]
port=9090

Note that this is based on my own system, not on a fresh install, so some details might be different for you …

My answers are not necessarily official YACReader statements but mostly represent my own opinion in technical matters.

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CHC
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6 years 4 months ago #5245 by CHC

Replied by CHC on topic Unable to launch Headless server on Ubuntu 20.04

Thanks for the solution
The section was tehre but not the item "port="

Added one with the right port number and everything went fine.

Have a nice weekend

CHC

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Unable to launch Headless server on Ubuntu 20.04

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