Hi there I’m running OpenSUSE 12.3 and when I edit the /etc/hosts it does not take immediately effect?
I’ve added to hosts
192.168.0.11 mywebsite.com
did save and quit and when I ping it, it still pinging the production server?
I’m kind new to opensuse am I missing something?
Editing /etc/hosts does immediately take effect here on my system.
Have you edited it as “root”? Otherwise the changes can’t be saved because of unsufficient permissions.
Could you post your /etc/hosts?
yes I’m editing with root
::1 localhost ipv6-localhost ipv6-loopback
127.0.0.1 localhost
127.0.0.2 hanatux.helmi hanatux
192.168.0.11 acervoindustrial.com.br
Okay I see that is necessary to reboot the system to the changes take effect!
There is some way to reload hosts without reboot?
Hm, I replaced my /etc/hosts with exactly this and immediately after saving it was respected:
amiga:/etc # ping acervoindustrial.com.br
PING acervoindustrial.com.br (**192.168.0.11**) 56(84) bytes of data.
^C
How did you check?
now try to comment the line save and try to ping again.
Okay let me try to explain so you could replicate.
add the line save and ping it, it will take effect the first time,
then go to the file and comment the line save and ping it again you will see that will still pinging the 192.168.0.11 now if you reboot you will see that it is pinging to the production server again.
then if you go to edit the file again and comment out the line, it will take effect again and will ping to 192.168.0.11, now if you comment the line again and ping it you will see that it will still ping the 192.168.0.11 even after remove the comment.
so wierd han???
Sorry, can’t reproduce. Everything’s working as expected:
amiga:/etc # ping acervoindustria.com.br
PING acervoindustrial.com.br (192.168.0.11) 56(84) bytes of data.
^C
--- acervoindustrial.com.br ping statistics ---
6 packets transmitted, 0 received, 100% packet loss, time 4999ms
amiga:/etc # vim hosts #comment out the line with acervoindustrial.com.br
amiga:/etc # ping acervoindustrial.com.br
PING acervoindustrial.com.br (198.154.203.42) 56(84) bytes of data.
64 bytes from odg.odghost.tk (198.154.203.42): icmp_seq=1 ttl=41 time=306 ms
64 bytes from odg.odghost.tk (198.154.203.42): icmp_seq=2 ttl=41 time=319 ms
64 bytes from odg.odghost.tk (198.154.203.42): icmp_seq=3 ttl=41 time=251 ms
But this sounds like a caching issue. Do you maybe have weird values in /etc/nscd.conf? Not sure if ping uses that, though.
enable-cache passwd yes
positive-time-to-live passwd 600
negative-time-to-live passwd 20
suggested-size passwd 211
check-files passwd yes
persistent passwd yes
shared passwd yes
max-db-size passwd 33554432
auto-propagate passwd yes
enable-cache group yes
positive-time-to-live group 3600
negative-time-to-live group 60
suggested-size group 211
check-files group yes
persistent group yes
shared group yes
max-db-size group 33554432
auto-propagate group yes
enable-cache hosts yes
positive-time-to-live hosts 600
negative-time-to-live hosts 0
suggested-size hosts 211
check-files hosts yes
persistent hosts no
shared hosts yes
max-db-size hosts 33554432
enable-cache services yes
positive-time-to-live services 28800
negative-time-to-live services 20
suggested-size services 211
check-files services yes
persistent services yes
shared services yes
max-db-size services 33554432
enable-cache netgroup yes
positive-time-to-live netgroup 28800
negative-time-to-live netgroup 20
suggested-size netgroup 211
check-files netgroup yes
persistent netgroup yes
shared netgroup yes
max-db-size netgroup 33554432
Okay Solved
I did change the line
enable-cache hosts yes
to:
enable-cache hosts no
and did reboot the system now it’s working like a charm thanks @wolfi323
On Wed, 22 May 2013 22:36:01 +0000, FelipeMiranda wrote:
> Hi there I’m running OpenSUSE 12.3 and when I edit the /etc/hosts it
> does not take immediately effect?
>
> I’ve added to hosts
>
> 192.168.0.11 mywebsite.com
>
> did save and quit and when I ping it, it still pinging the production
> server?
>
> I’m kind new to opensuse am I missing something?
After editing the file, run:
sudo /sbin/rcnscd restart
That should take care of this.
Jim
–
Jim Henderson
openSUSE Forums Administrator
Forum Use Terms & Conditions at http://tinyurl.com/openSUSE-T-C
Hm, strange.
I have the same settings in there and don’t encounter your issue.
Anyway, great if it’s solved for you now. 
On 2013-05-23 01:26, FelipeMiranda wrote:
> and did reboot the system now it’s working like a charm thanks
Simply reload the nscd service.
–
Cheers / Saludos,
Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)
Normally the Hosts file is read only once during boot (or restarting the appropriate service)
Don’t forget, in openSUSE you need to make Hostname changes in <two> places… not only to the Hosts file but in your YAST > Network Devices
TSU
That’s not true. See above.
- Don’t forget, in openSUSE you need to make Hostname changes in <two> places… not only to the Hosts file but in your YAST > Network Devices
TSU
No you don’t have to. You can make the change **either **in YaST or directly in /etc/hosts!
Agreed, and I make changes in /etc/hosts all of the time and they seem to
apply pretty-stinkin’-quickly. For example:
me@mybox0:~/Desktop> ping lalaland
ping: unknown host lalaland
2013-05-24 11:08:52 Jobs:0 Err:2
me@mybox0:~/Desktop> ping lalaland
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.024 ms
^C
— localhost ping statistics —
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.024/0.024/0.024/0.000 ms
2013-05-24 11:09:04 Jobs:0 Err:0
So in twenty seconds I went from not-resolving, to resolving, to
not-resolving, just by modifying /etc/hosts (no service restarts, no
logouts, didn’t even exit ‘vi’ in between writes to the file).
Good luck.
On 2013-05-24 19:11, ab wrote:
> So in twenty seconds I went from not-resolving, to resolving, to
> not-resolving, just by modifying /etc/hosts (no service restarts, no
> logouts, didn’t even exit ‘vi’ in between writes to the file).
Yes, that’s the normal behaviour.
I think I saw problems years ago with the nscd cache, long ago, not
noticing changes. I don’t remember why it was, maybe a bug.
–
Cheers / Saludos,
Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)
On Fri, 24 May 2013 16:56:02 +0000, tsu2 wrote:
> 1. Normally the Hosts file is read only once during boot (or restarting
> the appropriate service)
>
> 2. Don’t forget, in openSUSE you need to make Hostname changes in <two>
> places… not only to the Hosts file but in your YAST > Network Devices
>
> TSU
I have not found the second change to be necessary in my setup, FWIW.
Jim
–
Jim Henderson
openSUSE Forums Administrator
Forum Use Terms & Conditions at http://tinyurl.com/openSUSE-T-C
Interesting.
If these steps are not required any longer, it’s a relatively new development.
Will verify and likely find the same results others have posted.
TSU
Hm, depends on what you mean with “relatively new”.
I remember it being this way since years…
On 2013-05-27 16:26, tsu2 wrote:
>
> tsu2;2559824 Wrote:
>> 1. Normally the Hosts file is read only once during boot (or restarting
>> the appropriate service)
>>
>> 2. Don’t forget, in openSUSE you need to make Hostname changes in <two>
>> places… not only to the Hosts file but in your YAST > Network Devices
>
> Interesting.
> If these steps are not required any longer, it’s a relatively new
> development.
You may, some times, need change both. Sometimes the hosts file does not
end with the exact settings you want. But certainly, any change there
has immediate effects. If it doesn’t, there is a problem somewhere.
–
Cheers / Saludos,
Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)