Add script to connect to the simulation beamline.

inc.:
get load balancer IP addresses as no DNS name for simulation services
forward local ports to the load balancer to access services from workstation
launch phoebus GUI to view engineering screens provided by epics-pvcs service over http
kill the ssh tunnel process forwarding the ports when phoebus is closed

Author: ggayDiamond

t01-launch.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+THIS_DIR=$(dirname "$(readlink -f "$0")")
+
+# exit on error
+set -e
+
+# load the argus to talk to user's FEDID namespace in the Argus cluster (kubectl)
+module load argus
+
+# setup an ssh tunnel to the gateways and opis services
+gateways=$(kubectl get svc t01-epics-gateways --output jsonpath='{.status.loadBalancer.ingress[0].ip}')
+opis=$(kubectl get svc t01-epics-opis --output jsonpath='{.status.loadBalancer.ingress[0].ip}')
+sock="$HOME/.ssh/cm-%r@%h:%p"
+ssh -fNM -S "$sock" -L 9064:$gateways:9064 -L 9075:$gateways:9075 -L 8099:$opis:80 $HOSTNAME
+
+# instruct shell to kill the ssh tunnel when done
+SSH_PID=$(ssh -S "$sock" -O check $HOSTNAME 2>&1 | sed -n 's/.*pid=\([0-9]\+\).*/\1/p')
+trap 'kill $SSH_PID' EXIT
+
+# use the phoebus launcher script to start the GUI
+$THIS_DIR/opi/phoebus-launch.sh