iRule function to get node IP address from node name

Hi Robert,

why did you only know the name of the node, but not its IP? Or are you talking about a dynamic scenario in which context you only have the name available?

Can you please explain in more detail what you want to achieve? I mean what kind of request is coming in to the VS and what should be the outcome of your iRule?

Ciao Stefan :)

I'm trying to create a pool member status page like the one described at this link:

pool-member-status-page-on-a-virtual-server-v11

The command

for POOLNAME in `tmsh list ltm pool | grep -i "ltm pool" |  sort | awk '{print $3}'`; do
    for POOLMEMBER in `tmsh list ltm pool $POOLNAME | grep : | sort | awk '{print $1}'`; do
            echo \"$POOLNAME/$POOLMEMBER\", >> ${classfile}
    done
done

returns the pool name, the node name, and the port. It does not return the node IP address. But the LB::status method requires the pool member IP address, not the name. I could probably modify the code to return the IP address, but then I wouldn't have the node name and the port. I'm picky and I would like to have both because I want to display the name of the node/pool member on the web page so the users won't have to look up the IP address, plus the port is required for the LB::status method.

Hi Robert,

what about something like this? (sorry haven't the correct syntax in mind right now, but it should point you in the right direction)

for POOLNAME in `tmsh list ltm pool | grep -i "ltm pool" |  sort | awk '{print $3}'`; do
    for POOLMEMBER in `tmsh list ltm pool $POOLNAME | grep : | sort | awk '{print $1}'`; do
        POOLMEMBER_NAME=
        POOLMEMBER_PORT=
        POOLMEMBER_IP_TMP=($(tmsh list ltm node $POOLMEMBER_NAME | grep "address"))
        POOLMEMBER_IP=
        echo \"$POOLNAME/$POOLMEMBER_NAME/$POOLMEMBER_IP/$POOLMEMBER_PORT\", >> ${classfile}
    done
done

Ciao Stefan 🙂