On 3/27/2020 8:29 PM, john doe wrote:
On 3/27/2020 7:36 PM, Michal Prívozník wrote:
On 27. 3. 2020 19:23, john doe wrote:
Okay, I have installed the pluging, do you mind explaning how this should work?:
$ grep host /etc/ns* hosts: files libvirt_guest dns
If I'm correct, following your example, I should be able to do:
$ host try06
What am I missing.
'host' does DNS directly, regardless of nsswitch.conf. That's not how majority of SW work. Try:
getent hosts try06
or:
ssh try06
The majority will use gethostbyname() which will consult the nsswitch.conf and use modules defined there. In your case, the /etc/hosts will be consulted first, then libvirt_guest and DNS is used only if everything else failed. You can verify that 'host' does DNS directly by trying a hostname from /etc/hosts. It will give an error even though getent won't.
Michal
Thanks for the explanation but it does not seem to work:
$ getent hosts try06; echo $? 2
Using 'libvirt' or libvirt_guest' one or the other or both does not change the above, for testing purposes the line 'hosts: ...' has only libvirt modules.
It is also not working for SSH.
Testing this on Debian Buster (10) ('libnss-libvirt is already the newest version (5.0.0-4+deb10u1)').
Your help is appriciated.
With some more testing: $ grep hosts: /etc/ns* hosts: file libvirt libvirt_guest dns $ virsh net-dhcp-leases default Expiry Time MAC address Protocol IP address Hostname Client ID or DUID ------------------------------------------------------------------------------------------------------------------------------------------------ 2020-03-27 21:40:49 52:54:00:d4:e6:f0 ipv4 192.168.122.137/24 debian ff:00:d4:e6:f0:00:01:00:01:26:11:0b:0c:52:54:00:d4:e6:f0 $ getent hosts try06 $ getent hosts debian 192.168.122.137 debian If my understanding is correct, using 'try06' or 'debian' should do the same thing? -- John Doe