Need to use pkg ip.

[brian_31]

Hi Team:

We need to script on a service guard requirement and we need to use the package ip in that script. how do i get the package ip from a running box. Can anyone help please?

Thanks
Brian.

[Jeff Schussele]

Check the control file for that package.
Usually in /etc/cmcluster/pkg_name
It will be defined in there.

HTH,
Jeff

[PIYUSH D. PATEL]

Hi,

The package ip will be there if you have defined so. It is there in the package control scripts. /etc/cmcluster/pkgname/pkg.script

When you configure the packgae on the cluster you can define the ip for the package which works with the package. When your users want to use that package they can access the package using the package ip

You can define it in package control script and the variable is

IP[0]=a.b.c.d
SUBNET[0]=a.b.c.0 # Netmask = 255.255.255.0

Here a.b.c.d is the package ip of the package

Piyush

[Jeff Schussele]

The file *normally* is named pkg_name.ctl ...BUT... is not required to be named anything in particular.
In the file it will be in the field
IP[0]=111.222.111.222
The # in brackets could be larger IF there are mult IPs being asserted by the pkg.

IF you can't check that file you could do
netstat -in
And virtual IPs will have entries like

lan0:1 1500 111.222.111.0 111.222.111.222 ...etc
The key is the colon in the lan name. Note there may be several AND the pkg MUST be up to check it this way.

HTH,
Jeff

[Sanjay_6]

Hi Brian,

Try "netstat -i". Look at the ipaddress associated with lan0:1 lan0:2, lan1:1, lan1:2 and such. These are virtual ip's associated with lan0 and lan1 and are actually virtual ip's of the packages.

Hope this helps.

Regds

[PIYUSH D. PATEL]

Hi,

If you have not configured the virtual ip address the use ifconfig to configure them.

Piyush

[brian_31]

Hi Team:

I am sorry. I should have given more detail. we have /etc/cmluster/pkdir and then pkg.script and all those stuff. But is there a way around with a command to get the package ip.

Thanks
Brian.

[Jeff Schussele]

Hi Brian,

You could grep for it in the file & cut it out - EX:

grep IP pkg_name.ctl | grep = | grep -v "*" | cut -d = -f 2

That should give only the actual IP.

HTH,
Jeff

[Sanjay_6]

Hi Brian,

I don;t think there is any SG command which can tell you about the package virtual ip address. If the package virtual ip address is configued into the dns then you can get this ipaddress from the DNS.

nslokup pkh_name.domain.com

Hope this helps.

Regds

[Rich Wright]

I'm still not sure what you are needing.
But "cmviewcl -n $(hostname)" will show what is running on the current node. A package does not have to have an IP number. We have a SG monitor package that has no package IP.
But you could take the above output and grep for "enabled" and then "awk '{print $1}'" to get local running packages. Then grep for the IP from the /etc/cmcluster//.cntl file provided you used the recomended naming conventions.

[brian_31]

Hi:

We already have the package name and the machines are running in production now for 6 mounths with service guard. We have one package on each box(total 4 boxes). The script which i run when it installs tries to query the system for package ip. I do not want to query the /etc/cmluster/pkg dir.
Currently i do netstat -i, i find on the address column (4 th column) the package name but strangely the Network coloumn(ip address)
i find is that of the router. Is that not strange?? why would that happen?

Thanks
Brian.

[Rich Wright]

"netstat -i" will show the resolved name and the network number. To see the IP number, you need to run "netstat -in". Perhaps you can do a "netstat -i" getting the line for the package and save the first field. Then run "netstat -in" and grep for the first field and extract the column with the IP number.

[PIYUSH D. PATEL]

Hi,

run netstat -ni to find out and check the output properly.

Piyush

[Jeff Schussele]

Hi Brian,

Well you can certainly use netstat -in to get the virtual IP, but what happens IF down the road you add more virtual IPs? Which one would be correct - and - how would you determine that?
If you obtain the IP from the pkg definition or control script you KNOW you've got the correct IP(s). And this method would work on any system using any NIC. You just check the proper filename.
Then you can determine what you need from there - like is it asserted (pkg up?) or whatever (stats?) else you might need.

My 2 cents,
Jeff

[Sridhar Bhaskarla]

Jeff is correct. netstat -in is not very reliable.

You will surely get correct information from your cntl file. So, I also suggest you to get it from there.

awk '/^IP/ {FS="=";printf $2 " " } END {print }' /etc/cmcluster/package/package.cntl

If you have multiple virtual IPs, the above will list them in one line.

-Sri