[GSP475] GKE Migrating to Containers

$ sudo apt-get install -y apache2-utils

$ git clone https://github.com/GoogleCloudPlatform/gke-migration-to-containers.git
$ cd gke-migration-to-containers

$ gcloud config set compute/region us-central1
$ gcloud config set compute/zone us-central1-a

// The setup of this demo does take up to 15 minutes
$ make create

// Run the following to go into the vm-webserver machine that has the application running on host OS:
// Type "Y" when asked if you want to continue. Press Enter twice to not use a passphrase.
$ gcloud compute ssh vm-webserver --zone us-central1-a

$ ps aux
$ exit

// Run the following to go into the cos-vm machine, where you have docker running the container.
$ gcloud compute ssh cos-vm --zone us-central1-a

$ sudo docker exec -it $(sudo docker ps |awk '/prime-flask/ {print $1}') ps aux

$ exit

$ gcloud container clusters get-credentials prime-server-cluster
$ kubectl get pods

// IP address and port from your validation output
// ab -c 120 -t 60  http://<IP_ADDRESS>/prime/10000
$ ab -c 120 -t 60  http://35.244.253.26/prime/10000

This is ApacheBench, Version 2.3 <$Revision: 1757674 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 35.244.253.26 (be patient)
Completed 5000 requests
Finished 7019 requests


Server Software:        gunicorn/19.9.0
Server Hostname:        35.244.253.26
Server Port:            80

Document Path:          /prime/10000
Document Length:        48 bytes
Concurrency Level:      120
Time taken for tests:   60.001 seconds
Complete requests:      7019
Failed requests:        0
Total transferred:      1445914 bytes
HTML transferred:       336912 bytes
Requests per second:    116.98 [#/sec] (mean)
Time per request:       1025.801 [ms] (mean)
Time per request:       8.548 [ms] (mean, across all concurrent requests)
Transfer rate:          23.53 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   0.8      0      10
Processing:   123 1016  84.3   1009    1629
Waiting:      123 1016  84.3   1008    1629
Total:        129 1016  83.8   1009    1630

Percentage of the requests served within a certain time (ms)
  50%   1009
  66%   1023
  75%   1033
  80%   1042
  90%   1076
  95%   1094
  98%   1211
  99%   1239
100%   1630 (longest request)

$ kubectl scale --replicas 3 deployment/prime-server

$ ab -c 120 -t 60  http://<IP_ADDRESS>/prime/10000

$ make teardown