calibre-server won't work right

Ersatzreifen · 12-10-2016, 10:06 AM

I've been running the server on my openSUSE for over a year. Several days ago I upgraded the OS from 13.2 to openSUSE Leap 42.2 after formatting the root partition. A new calibre installation was downloaded from the web site and installed exactly as before.

The command I use to start the server is: /usr/bin/calibre-server --daemonize --url-prefix /library --port 8787 --with-library "/home/Calibre/MASTER" & which now results in the following error message:

sh: /opt/calibre/lib/libreadline.so.6: no version information available (required by sh)

The calibre-server didn't seem to run at first, but ps xaf | grep calibre shows this:

25005 ? Sl 0:01 /opt/calibre/bin/calibre-server --daemonize --url-prefix /library --port 8787 --with-library /home/Calibre/MASTER

The calibre program will start and run without any problem. Port forwarding is right, port 8787 is open in the firewall, and now that I got my dynamic dns functioning again I and others can finally connect to http://behne.ddns.net:8787, but strangely, I cannot connect to http://localhost:8787 - the browser says Unable to connect. You think the opposite would be true between the two URL's!

Concerning the error message, the best I can figure is that there appears to be a library mismatch between the system used to create the executable program and the new system I am running the program on. This suggests three options:

static linking the program
using "local" copies of the libraries / force the application to use those (compatible) versions
defining LD_PRELOAD to force the correct versions to be used

Number 1 is not an option for me AFAIK, I'm not interested in compiling from source or the sundry problems that will introduce. Numbers 2 and 3 are a bit beyond my personal knowledge base, and I don't like experimenting with things I don't understand. So.....

Does anyone know exactly how to accomplish numbers 2 and 3 to get rid of the annoying error message, and also how to get it working on the localhost address again?

kovidgoyal · 12-10-2016, 09:52 PM

First of all the error from sh does not have anything to do with your inability to connect to localhost, which is likely because you changed the interface calibre listens on in Preferences->Tweaks. And calibre already uses LD_PRELOAD and comes with its own copy of libreadline.so and does not use the sh program at all (it has its own native code launchers). The mismatch is because the version of libreadline used by calibre is not the version used by the system, and it does not affect calibre functioning (libreadline is only needed for interactive prompts, which are only used by calibre-debug, not in normal calibre operation).

Ersatzreifen · 12-11-2016, 03:36 AM

I did not change anything in Preferences->Tweaks. Had I done so I would have mentioned it. The only changes here are:
1. installed a new OS version.
2. Installed a new calibre from your web page the recommended way.

No settings were changed at all. I did just now check in Preferences->Tweaks after reading your reply to see what it is set to, and found it still set to the default:
server_listen_on = '0.0.0.0'
so my inability to connect to localhost is not due to that setting, it has to be something else pecular to the OS upgrade.

PeterT · 12-11-2016, 08:36 AM

Does running /use/bin/calibre-server set items like LD_PRELOAD?

kovidgoyal · 12-11-2016, 02:43 PM

/usr/bin/calibre-server is just a symlink to /opt/calibre/calibre-server on a binary install.

12-10-2016, 10:06 AM	#1
Ersatzreifen Bibliothekar Posts: 38 Karma: 10 Join Date: Jun 2011 Location: San Jose City, Philippines Device: Galaxy Tab S w/Bookari Premium	calibre-server won't work right I've been running the server on my openSUSE for over a year. Several days ago I upgraded the OS from 13.2 to openSUSE Leap 42.2 after formatting the root partition. A new calibre installation was downloaded from the web site and installed exactly as before. The command I use to start the server is: /usr/bin/calibre-server --daemonize --url-prefix /library --port 8787 --with-library "/home/Calibre/MASTER" & which now results in the following error message: sh: /opt/calibre/lib/libreadline.so.6: no version information available (required by sh) The calibre-server didn't seem to run at first, but ps xaf \| grep calibre shows this: 25005 ? Sl 0:01 /opt/calibre/bin/calibre-server --daemonize --url-prefix /library --port 8787 --with-library /home/Calibre/MASTER The calibre program will start and run without any problem. Port forwarding is right, port 8787 is open in the firewall, and now that I got my dynamic dns functioning again I and others can finally connect to http://behne.ddns.net:8787, but strangely, I cannot connect to http://localhost:8787 - the browser says Unable to connect. You think the opposite would be true between the two URL's! Concerning the error message, the best I can figure is that there appears to be a library mismatch between the system used to create the executable program and the new system I am running the program on. This suggests three options: static linking the program using "local" copies of the libraries / force the application to use those (compatible) versions defining LD_PRELOAD to force the correct versions to be used Number 1 is not an option for me AFAIK, I'm not interested in compiling from source or the sundry problems that will introduce. Numbers 2 and 3 are a bit beyond my personal knowledge base, and I don't like experimenting with things I don't understand. So..... Does anyone know exactly how to accomplish numbers 2 and 3 to get rid of the annoying error message, and also how to get it working on the localhost address again?

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12-10-2016, 09:52 PM	#2
kovidgoyal creator of calibre Posts: 43,844 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	First of all the error from sh does not have anything to do with your inability to connect to localhost, which is likely because you changed the interface calibre listens on in Preferences->Tweaks. And calibre already uses LD_PRELOAD and comes with its own copy of libreadline.so and does not use the sh program at all (it has its own native code launchers). The mismatch is because the version of libreadline used by calibre is not the version used by the system, and it does not affect calibre functioning (libreadline is only needed for interactive prompts, which are only used by calibre-debug, not in normal calibre operation).

12-11-2016, 03:36 AM	#3
Ersatzreifen Bibliothekar Posts: 38 Karma: 10 Join Date: Jun 2011 Location: San Jose City, Philippines Device: Galaxy Tab S w/Bookari Premium	I did not change anything in Preferences->Tweaks. Had I done so I would have mentioned it. The only changes here are: 1. installed a new OS version. 2. Installed a new calibre from your web page the recommended way. No settings were changed at all. I did just now check in Preferences->Tweaks after reading your reply to see what it is set to, and found it still set to the default: server_listen_on = '0.0.0.0' so my inability to connect to localhost is not due to that setting, it has to be something else pecular to the OS upgrade.

12-11-2016, 08:36 AM	#4
PeterT Grand Sorcerer Posts: 12,160 Karma: 73448616 Join Date: Nov 2007 Location: Toronto Device: Nexus 7, Clara, Touch, Tolino EPOS	Does running /use/bin/calibre-server set items like LD_PRELOAD?

12-11-2016, 02:43 PM	#5
kovidgoyal creator of calibre Posts: 43,844 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	/usr/bin/calibre-server is just a symlink to /opt/calibre/calibre-server on a binary install.

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