Questions tagged [nsswitch]
Name Service Switch, an modular interface built in to the GNU C library that handles data retrieval from system databases, e.g., password, group, etc.
55 questions
0 votes
1 answer
14 views
Debian as client to several different (!) LDAP servers using LDAP/NSS / nss-pam-ldapd
I want to use a Debian Stable system to authentificate to two different LDAP servers that provide user/password/group data using e.g. LDAP/NSS / nss-pam-ldapd (https://wiki.debian.org/LDAP/NSS, https:/...
- 143
1 vote
0 answers
32 views
identical NSS config resolves differently on two computers
One of my computers won't resolve a domain that the local gateway resolves with a CNAME. The nsswitch config is identical on both machines. I just can't work out what the cause is. computer A (works): ...
- 145
0 votes
2 answers
99 views
Any real use cases that we are NOT prioritise Local Files Over DNS in `nsswitch.conf` [closed]
Background Recently, I learned that there is a name Service Switch configuration file - nsswitch.conf in some Unix-like operating systems. We can change the domain name resolution order using nsswitch....
15 votes
2 answers
5k views
Why am I known as a user?
I inherited a Linux server; the previous administrator is no longer with our company. I can log in to the server via SSH with my company-wide Microsoft Directory administration user, and it works ...
- 515
1 vote
0 answers
52 views
Simple user database / LDAP lookup options for containers
In my environment we launch containers with a specific uid/gid that our users use as workspaces. It's a bit finicky and one of the drawbacks is that there won't be a matching user in /etc/passwd, ...
- 11
1 vote
2 answers
825 views
Fedora 38: need persistent changes in nsswitch.conf
I've got Fedora 38 KDE Spin. To access corporate VPN resources in .local zone I need to make queries to the DNS server after establishing connection. Default nsswitch.conf hosts section looks like ...
- 113
7 votes
1 answer
54k views
How do I permanently configure the DNS resolution in Ubuntu for ALL programs/layers for specific interfaces
Is there a way I can permanently set the DNS preference of my Ubuntu laptop for specific network interfaces? I am relying on a wifi network that is not that predictable. I don't have access to the ...
- 647
0 votes
2 answers
729 views
Difference between *LK* in /etc/shadow and /usr/sbin/nologon in /etc/passwd
What is the practical difference between setting *LK* in /etc/shadow and setting /usr/sbin/nologon in /etc/passwd? When would we choose one over the other? When would we combine them?
- 113
3 votes
1 answer
2k views
Difference between nsswitch, nslcd and sssd?
I'm trying to configure sssd instead of nslcd for my Rhel system, and then I came across nsswitch. What's the difference between these three?
- 197
1 vote
1 answer
6k views
'getent passwd' not showing LDAP users, athough users can log in
I have an administration node running LDAP and a login node which uses LDAP on the other node to authorize users. Users are able to log into the login node successfully. When I run getent passwd, on ...
- 195
0 votes
1 answer
754 views
Can't ping server that resolves using avahi-resolve
I have a server I've discovered from a Manjaro client using avahi named unaha-closp. However, when I ping it I get: ping: unaha-closp.local: Name or service not known In /etc/nsswitch.conf my hosts ...
- 154
2 votes
2 answers
2k views
avahi-resolve works but mdns
I have an updated Debian 11 (bullseye) setup and want to use avahi to connect to locally connected computers. avahi works, for example: avahi-resolve -n4 prag11mono.local gives prag11mono.local 10.0....
- 153
0 votes
1 answer
89 views
When was NSS (Name Service Switch) introduced in Solaris?
I was not able to find a date or a Solaris release number... Also, beside Ultrix's svc.conf system (mentionned in NSS's Wikipedia article), did other comparable systems exist in other Unices, before ...
- 184
1 vote
0 answers
293 views
How to configure /etc/pam.d/sshd and nsswitch.conf in order to avoid all remote calls for ssh with local user?
I have created an NSS and a PAM module in order to authenticate and get users and groups from a custom remote server. In order to get them used by the system I am adding a line in /etc/pam.d/sshd: ...
- 111
1 vote
0 answers
538 views
Fully replace sssd->ldap with web APIs in Linux
My organization has to get rid of their ldap servers, so I am facing the task of replacing it's functionality. To make this as customizable and future-proof as I can, I am looking for something that ...
- 11