Public bug reported:
Binary package hint: passwd
In a machine with nsswitch configured to used a LDAP server with around
50000 users, trying to add a new local user (with useradd) takes a
really long time.
My /etc/nsswitch.conf contains this:
passwd: files ldap
group: files
shadow: files
hosts: files dns mdns
#hosts: dns [!UNAVAIL=return] files mdns #UA2006 ?
networks: files
protocols: db files
services: db files
ethers: db files
rpc: db files
netgroup: nis
An strace shows that useradd is fetching a full list of users from the
server: on my system his takes a long time. Commenting out the "ldap"
in nsswitch immediately solves the problem.
Maybe this is a feature but I can't see why adding a new user should
need to verifiy every existing user.
Using the command newusers, there is no problem even with LDAP
activated.
João Rodrigues
** Affects: shadow (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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useradd too slow with LDAP nsswitch
https://bugs.launchpad.net/bugs/120015
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