Dear Katrin, Many thanks for Your reply. The problem is the following: We use multiple koha-s (with the same number of zebra daemons), now we want to install koha v3.22.21 on ubuntu 16.04. When I activate koha-zebra-daemon for the second instance of koha (koha1), I get the error: ---------------------------------------------------------------------------------------------------------------------- $ sudo update-rc.d koha1-zebra-daemon defaults insserv: script koha1-zebra-daemon: service koha-zebra-daemon already provided! insserv: exiting now! update-rc.d: error: insserv rejected the script header ----------------------------------------------------------------------------------------------------------------------- Here is the content of koha1-zebra-daemon: ............................................................................................................... .............the same as for instance of koha, koha2, koha3....................... USER=koha GROUP=koha DBNAME=koha1 NAME=koha-zebra-ctl.$DBNAME LOGDIR=/var/log/koha1 ERRLOG=$LOGDIR/koha-zebradaemon.err STDOUT=$LOGDIR/koha-zebradaemon.log OUTPUT=$LOGDIR/koha-zebradaemon-output.log KOHA_CONF=/etc/koha1/koha-conf.xml RUNDIR=/var/run/koha1/zebradb LOCKDIR=/var/lock/koha1/zebradb # you may need to change this depending on where zebrasrv is installed ZEBRASRV=/usr/bin/zebrasrv ZEBRAOPTIONS="-v none,fatal,warn" .................................................................................................... .............the same as for instance of koha, koha2, koha3........... The main strange is the following: it (the same version of koha and zebra) works without any problem on Ubuntu 14.04! Thanks in advance George Mikuchadze