The groupadd manpage gives this clue: The default is to use the smallest ID value greater than or equal to GID_MIN and greater than every other group. Maybe you have a group numbered GID_MAX or more already? 60000, according to the manpage. On Wed, Sep 02, 2015 at 09:42:29PM +0100, isdtor wrote: > The munin rpms from EPEL failed to install correctly on a particular > machine. This is why > > # /usr/sbin/groupadd -r munin > groupadd: Can't get unique system GID (no more available GIDs) > # > > but I don't understand why this happens. Even after checking the man pages > for groupadd and login.defs, I have been unable to determine what the > settings for SYS_GID_MIN/SYS_GID_MAX on RHEL/CentOS are. None of the 5/6 > machines I have access to list them in login.defs. Even assuming > relatively conservative values of 201/499, resp. (examples from other > distros include 101/999), this doesn't add up. > > # grep munin /etc/group > # ypmatch munin group > # wc -l /etc/group > 100 /etc/group > # grep SYS_GID /etc/login.defs > # > > Any ideas? Information seems to be pretty thin on the ground. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos