Part IV. Trigger auto scale-out¶

Step 1. Run Apache Bench from traffic_gen VM¶

1. SSH to traffic_gen VM and run run_traffic.sh script passing Server IP as an argument:

   ./run_traffic.sh 10.1.52.101
   

2. Log files are generated for each thread and are located in the same directory (ab[1-10].out)

Step 2. Watch BIG-IP and Nagios statistics, scaleout process in VNF manager¶

1. Point Jumphost Browser to a slave VNF(FW) BIG-IP instance .40 IP address and login to BIG-IP TMUI

   1. Navigate to Statistics –> Analytics –> CPU
   2. Watch CPU graph as it crosses pre-defined 40% CPU threshold

2. Open a new tab in the browser and point it to the public floating https://10.1.20.x/nagios IP address of Nagios VM. Login using Nagios credentials and navigate to Services

   See Credentials

   

After 2-3 minutes Nagios will show a CRITICAL alarm when CPU utilization on VNF layer BIG-IPs reaches pre-defined threshold:

Clicking on the alarm brings up detailed state information

3. Point your browser to the public floating 10.1.20.x IP address of VNF Manager VM

   1. Login to VNF manager UI and click on Deployments from the left-side menuIcon
   2. Watch as VNF manager performs auto scale-out of VNF(FW) instances:

4. Stop the traffic using the following script:

   ./stop_traffic.sh
   

What’s Next?

Initiate Manual scaleout