Add configure-agent.sh script

Signed-off-by: Darko Draskovic <[email protected]>

systemd/cocos-agent.service

@@ -6,13 +6,8 @@ After=network.target
 StandardOutput=file:/var/log/cocos/agent.stdout
 StandardError=file:/var/log/cocos/agent.stderr
 
-Environment=NETWORK_INTERFACE=enp0s3
-Environment=AGENT_GRPC_ADDR=10.0.2.15:7002
-Environment=AGENT_LOG_LEVEL=info
-
-ExecStartPre=ip link set dev $NETWORK_INTERFACE up
-ExecStartPre=dhclient $NETWORK_INTERFACE
 ExecStartPre=mkdir -p /var/log/cocos
+ExecStartPre=source /cocos/configure-agent.sh
 
 ExecStart=/cocos/agent
 

systemd/configure-agent.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Determine the network interface's name
+NETWORK_INTERFACE=$(ip addr | awk '/^2: /{sub(/:/, "", $2); print $2}')
+
+# Determine the IP address of the network interface
+AGENT_GRPC_ADDR=$(ip addr show dev "$NETWORK_INTERFACE" | awk '/inet / { print $2 }' | cut -d/ -f1):7002
+
+# Set the environment variables
+export NETWORK_INTERFACE
+export AGENT_GRPC_ADDR