- Created by Francesco Sinisi, last updated on Apr 17, 2021 4 minute read
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The next goal is to "break" the cluster. By gradually increasing the number of replicas of the deployment that sends requests to the php-apache application, one finds the breaking point, which obviously grows as the flavor of the VMs grows.
StressTest (xLarge) Expand source
$ kubectl autoscale deployment php-apache --cpu-percent=50 --min=1 --max=200 $ kubectl scale deploy infinite-calls --replicas=50 $ kubectl get deploy NAME READY UP-TO-DATE AVAILABLE AGE infinite-calls 50/50 50 50 6h6m php-apache 112/127 127 112 22h $ kubectl get hpa --watch NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE php-apache Deployment/php-apache 0%/50% 1 200 1 11m php-apache Deployment/php-apache 78%/50% 1 200 1 12m php-apache Deployment/php-apache 78%/50% 1 200 2 12m php-apache Deployment/php-apache 249%/50% 1 200 2 13m php-apache Deployment/php-apache 249%/50% 1 200 4 13m php-apache Deployment/php-apache 249%/50% 1 200 8 13m php-apache Deployment/php-apache 249%/50% 1 200 10 13m php-apache Deployment/php-apache 221%/50% 1 200 10 14m php-apache Deployment/php-apache 221%/50% 1 200 14 14m php-apache Deployment/php-apache 223%/50% 1 200 14 15m php-apache Deployment/php-apache 223%/50% 1 200 28 15m php-apache Deployment/php-apache 223%/50% 1 200 56 15m php-apache Deployment/php-apache 174%/50% 1 200 56 15m php-apache Deployment/php-apache 174%/50% 1 200 77 16m php-apache Deployment/php-apache 85%/50% 1 200 77 17m php-apache Deployment/php-apache 85%/50% 1 200 127 17m php-apache Deployment/php-apache 57%/50% 1 200 127 18m php-apache Deployment/php-apache 58%/50% 1 200 127 19m php-apache Deployment/php-apache 59%/50% 1 200 127 20m php-apache Deployment/php-apache 57%/50% 1 200 127 21m php-apache Deployment/php-apache 59%/50% 1 200 127 22m php-apache Deployment/php-apache 58%/50% 1 200 127 23m php-apache Deployment/php-apache 59%/50% 1 200 127 24m php-apache Deployment/php-apache 58%/50% 1 200 127 25m php-apache Deployment/php-apache 59%/50% 1 200 127 27m php-apache Deployment/php-apache 60%/50% 1 200 127 28m php-apache Deployment/php-apache 59%/50% 1 200 127 29m php-apache Deployment/php-apache 59%/50% 1 200 127 30m php-apache Deployment/php-apache 59%/50% 1 200 127 31m php-apache Deployment/php-apache 0%/50% 1 200 127 32m php-apache Deployment/php-apache 0%/50% 1 200 127 35m php-apache Deployment/php-apache 0%/50% 1 200 1 35m
StressTest (large) Expand source
$ kubectl autoscale deployment php-apache --cpu-percent=50 --min=1 --max=100 $ kubectl scale deploy infinite-calls --replicas=30 $ kubectl get deploy NAME READY UP-TO-DATE AVAILABLE AGE infinite-calls 30/30 30 30 25h php-apache 52/85 85 52 25h $ kubectl get hpa --watch NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE php-apache Deployment/php-apache 0%/50% 1 100 1 45s php-apache Deployment/php-apache 250%/50% 1 100 1 78s php-apache Deployment/php-apache 250%/50% 1 100 4 93s php-apache Deployment/php-apache 250%/50% 1 100 5 108s php-apache Deployment/php-apache 235%/50% 1 100 5 2m19s php-apache Deployment/php-apache 235%/50% 1 100 10 2m35s php-apache Deployment/php-apache 235%/50% 1 100 19 2m50s php-apache Deployment/php-apache 212%/50% 1 100 19 3m21s php-apache Deployment/php-apache 212%/50% 1 100 38 3m36s php-apache Deployment/php-apache 212%/50% 1 100 43 3m51s php-apache Deployment/php-apache 99%/50% 1 100 43 4m22s php-apache Deployment/php-apache 99%/50% 1 100 58 4m38s php-apache Deployment/php-apache 86%/50% 1 100 58 5m9s php-apache Deployment/php-apache 86%/50% 1 100 85 5m24s php-apache Deployment/php-apache 84%/50% 1 100 85 7m12s php-apache Deployment/php-apache 86%/50% 1 100 85 8m15s php-apache Deployment/php-apache 87%/50% 1 100 85 9m17s php-apache Deployment/php-apache 83%/50% 1 100 85 10m php-apache Deployment/php-apache 87%/50% 1 100 85 11m php-apache Deployment/php-apache 85%/50% 1 100 85 13m php-apache Deployment/php-apache 86%/50% 1 100 85 14m php-apache Deployment/php-apache 85%/50% 1 100 85 15m php-apache Deployment/php-apache 87%/50% 1 100 85 16m php-apache Deployment/php-apache 86%/50% 1 100 85 17m php-apache Deployment/php-apache 86%/50% 1 100 85 18m php-apache Deployment/php-apache 85%/50% 1 100 85 20m php-apache Deployment/php-apache 0%/50% 1 100 85 21m php-apache Deployment/php-apache 0%/50% 1 100 85 26m php-apache Deployment/php-apache 0%/50% 1 100 1 26m
StressTest (medium) Expand source
$ kubectl autoscale deployment php-apache --cpu-percent=50 --min=1 --max=50 $ kubectl scale deploy infinite-calls --replicas=15 $ kubectl get deploy NAME READY UP-TO-DATE AVAILABLE AGE infinite-calls 15/15 15 15 5h4m php-apache 22/42 42 22 5h6m $ kubectl get hpa --watch NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE php-apache Deployment/php-apache 0%/50% 1 50 1 49m php-apache Deployment/php-apache 250%/50% 1 50 1 50m php-apache Deployment/php-apache 250%/50% 1 50 4 50m php-apache Deployment/php-apache 250%/50% 1 50 5 51m php-apache Deployment/php-apache 212%/50% 1 50 5 51m php-apache Deployment/php-apache 212%/50% 1 50 9 51m php-apache Deployment/php-apache 197%/50% 1 50 9 52m php-apache Deployment/php-apache 197%/50% 1 50 18 52m php-apache Deployment/php-apache 197%/50% 1 50 36 52m php-apache Deployment/php-apache 100%/50% 1 50 36 53m php-apache Deployment/php-apache 100%/50% 1 50 42 53m php-apache Deployment/php-apache 99%/50% 1 50 42 54m php-apache Deployment/php-apache 102%/50% 1 50 42 55m php-apache Deployment/php-apache 102%/50% 1 50 42 56m php-apache Deployment/php-apache 101%/50% 1 50 42 57m php-apache Deployment/php-apache 100%/50% 1 50 42 58m php-apache Deployment/php-apache 99%/50% 1 50 42 59m php-apache Deployment/php-apache 101%/50% 1 50 42 60m php-apache Deployment/php-apache 100%/50% 1 50 42 61m php-apache Deployment/php-apache 98%/50% 1 50 42 63m php-apache Deployment/php-apache 100%/50% 1 50 42 64m php-apache Deployment/php-apache 101%/50% 1 50 42 65m php-apache Deployment/php-apache 97%/50% 1 50 42 66m php-apache Deployment/php-apache 101%/50% 1 50 42 67m php-apache Deployment/php-apache 100%/50% 1 50 42 68m php-apache Deployment/php-apache 0%/50% 1 50 42 69m php-apache Deployment/php-apache 0%/50% 1 50 42 74m php-apache Deployment/php-apache 0%/50% 1 50 1 74m
StressTest (xLarge)
StressTest (large)
StressTest (medium)
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