Excerpts from Solomon Mwangi's message of 2017-01-13 12:55:12 +0300: > I have Koha running on an Linux server running Ubuntu 12.04 > > Koha runs fine - no issues. > > I have been trying to connect to it via ZS39 but unable to connect. > > Yaz client gives me this error = System (lower-layer) error > > Help/ideas would be appreciated.
I assume you're talking about Z39.50? There is a Wiki page describing how to troubleshoot problems: https://wiki.koha-community.org/wiki/Troubleshooting_Koha_as_a_Z39.50_server But I've found that a few details in that document were slightly wrong or incomplete for my installation (Koha 16.11 on Debian 8). Here are the notes I wrote for myself as I was getting Z39.50 to work on my installation (all tasks performed while logged in as root): To enable Z39.50, edit the file `/etc/koha/sites/LIBRARYNAME/koha-conf.xml`, where LIBRARYNAME is the name you chose when you created your Koha instance. Near the top of that file is a line that looks like this: <listen id="publicserver">tcp:@:nnn</listen> Uncomment that line by removing the `<!--` and `-->` lines before and after it. Then replace `nnn` with an unused port number, preferably something greater than 1023. I chose 9998. Farther down in file, around line 180, is a section starting with a line that looks like this: <!-- PUBLICSERVER'S BIBLIOGRAPHIC RECORDS --> Below that is a line that looks like this: <server id="publicserver" listenref="publicserver"> Remove the start-of-comment line (`<!--`) before that line. Now move down to around line 260, where you will see this line: </serverinfo> Remove the end-of-comment line (`-->`) after that line. Finally, save the file and exit the editor. Restart Zebra (the program that handles searches in Koha): koha-restart-zebra rpl Verify that Zebra is now listening on the port you chose (9998 in the example above) by doing this: netstat -pn --tcp --listen | grep 9998 If things are working, you should see a line that looks like this: tcp 0 0 0.0.0.0:9998 0.0.0.0:* LISTEN 6986/zebrasrv If things are not working, you won't see any output. As a final check, you can try making a Z39.50 connection: yaz-client tcp:127.0.0.1:9998/biblios If things are working, you should see a few lines of output, including a line that looks like this: Connection accepted by v3 target. and then a prompt line: Z> If things aren't working, you'll see an error message like this: Connecting...error = System (lower-layer) error: Connection refused Exit the `yaz-client` program by hitting Ctrl-D or typing `exit` followed by Enter. _______________________________________________ Koha mailing list http://koha-community.org Koha@lists.katipo.co.nz https://lists.katipo.co.nz/mailman/listinfo/koha