topic Re: Net services in Operating System - HP-UX

Net services

arun khatwani — Sun, 14 Jun 2009 10:30:18 GMT

There was change in back end lan netmask and the new netmask ip updated in /etc/rc.config.d/netconf ..

But we forgot to stop and start of net services.

so could it be possible to do stop and start of net services so that new netmask shld got activated for backend lan.

Currently oracle databse is ruuning on system a,, and how can we check which net services are runing on system now, would they got affected if we do stop and start of net services.

Re: Net services

Steven E. Protter — Sun, 14 Jun 2009 11:40:10 GMT

Shalom,

In theory, you can stop network services and start them and implement your netconf changes.

nfs.core
nfs.server
nfs.client
...

The list is huge.

In practice, I tried a few times doing a start stop on /sbin/init.d/net

It never worked very well since any one of 100 services depended on networking also needed a restart.

Therefore, when I change netconf, I simply reboot the system.

Watch for typos, they can hang your boot process.

SEP

Re: Net services

arun khatwani — Sun, 14 Jun 2009 11:44:45 GMT

Steevn i know we did in many servers yesterday as there was maintenance day and we did not face any problem yet,

so i just want to know that whether we can do stop and restart of net services by /sbin/init.d/net stop start today at present no one is login on sytem.

Re: Net services

Hemmetter — Sun, 14 Jun 2009 11:46:23 GMT

Hi,

"net services" do not know something about netmask. If it is just the netmask just set it with "ifdown ethX ; ifup ethX". All your service should see just a short network-hang and keep running. Lost packets are handled by ip-Stack and retransmited automatically.

rgds
HGH

Re: Net services

Hemmetter — Sun, 14 Jun 2009 12:14:43 GMT

Hi

ifup/ifdown are "linux", sorry!
As Steve already mentioned /sbin/init.d/net is the method on HP-UX.

rgds
HGH

Re: Net services

Steven E. Protter — Sun, 14 Jun 2009 12:25:49 GMT

Sure you can just do net.

I just found that in day to day practice rebooting the server worked better.

Thats because the servers I run tend to have a lot of network dependent services. Even apache does not take to well to a net reboot on hpux without a system reboot.

All the docs say you can do as you wish.

Good Luck.

SEP