Icontrol RestAPI enable/disable multiple pool members/multiple pools

You can disable all the pool members that belong to a certain node by disabling the node: e.g.,

curl -sku $PASS https://$HOST/mgmt/tm/ltm/node/<NODE> -X PATCH -H 'Content-type: application/json' -d '{"state":"user-down"}'

If you need to disable individual pool members (e.g., test_node:80 and test_node:443 but not test_node:8080), then you need to write a loop: e.g.,

for member in test_node:80 test_node:443: do
  curl -sku $PASS https://$HOST/mgmt/tm/ltm/pool/members/$member -X PATCH -H 'Content-type: application/json' -d '{"state":"user-down"}'
done

Thanks, the node idea makes sense. Now, what if I have 20 nodes that need disabling? Do I have to run the script 20 times, one for each node?

Yes, you need to run 20 times (loop).

Another idea is to write a tmsh (or bash) script that disables designated nodes and call that script via iControl REST.

Ah, thank you. We already have tmsh script which we used to use when we had direct access. I didn't realize we could us iControl REST to call that script. That is probably the way we will go. Thank you so much for your response!

Informational: Calling a tmsh script (equivalent to 'tmsh run cli script callMe' where "callMe" is the name of the script):

curl -sku $PASS https://$HOST/mgmt/tm/cli/script \
  -H "Content-type: application/json" -X POST \
  -d '{"command":"run", "utilCmdArgs":"callMe"}'