/etc/resolv.conf file always be changed automatically

[Horia Chirculescu]

>changed automatically at 5:00am everyday

What is actually changing in resolv.conf everyday (post here the lines)?

Horia.

[diaoxin]

Hi Horia,
There are 3 lines concerning of " namesever" setting,because we have 3 DNS servers. assume that the 3 lines are as below :
nameserver 1.1.1.1
nameserver 2.2.2.2
nameserver 3.3.3.3
But at 5:00am everyday , the 3 IPs in the 3 lines will be changed to another settings which are not the correct IP of our DNS.

Thank you!
DiaoXin

[Horia Chirculescu]

Do you use DHCP? Check for dhcp client running on your HPUX box.

This is a server or a workstation?

Best regards,
Horia.

[Matti_Kurkela]

Is your system configured to use DHCP instead of using static IP address? Perhaps your DHCP server requires the system to renew address leases daily, and the lease includes DNS configuration.

(Check /etc/rc.config.d/netconf; if it says DHCP_ENABLE[x]=1 where x is the number of an interface configuration block, then DHCP is in use. Then check the timestamp of /etc/dhcpclient.data: if it's updated at 5:00am too, then )

Please read "man dhcpdb2conf" to see a list of things DHCP can affect. In addition to network interface settings, it includes several things in files /etc/resolv.conf, /etc/rc.config.d/namesvrs and /etc/rc.config.d/netdaemons.

MK

[diaoxin]

Hi Horia,
It is a server and it does not use DHCP , the server IP is static IP . But can you tell me how to check DHCP in the server ? I cannot find the configuration file under /etc/rc.config.d

Thank you!
Diaoxin

[diaoxin]

Hi MK,

It is static IP in the server , and I find DHCP_ENABLE[0]=0 in /etc/rc.config.d/netconf file .

Thank you!
DiaoXin

[Horia Chirculescu]

>But can you tell me how to check DHCP in

Run:

ps -e |grep dhcp

This would tell you if the dhcp daemon is running or not.

Best regards,
Horia.

[diaoxin]

Hi Horia,
Ok , thanks.
No dhcp process found in the server.

Diaoxin

[Horia Chirculescu]

Run this:

ps -e |grep boot

This server is part of a cluster?

Horia.

[diaoxin]

Hi Horia,
No , it is not cluster.

DiaoXin