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$ kubectl autoscale deployment php-apache --cpu-percent=50 --min=1 --max=20
# We started with 2 replicas, then increased to 4
$ kubectl scale deploy infinite-calls --replicas=2 
$ kubectl get hpa --watch
NAME         REFERENCE               TARGETS    MINPODS   MAXPODS   REPLICAS   AGE
php-apache   Deployment/php-apache   0%/50%     1         20        1          89m
php-apache   Deployment/php-apache   209%/50%   1         20        1          89m
php-apache   Deployment/php-apache   209%/50%   1         20        4          89m
php-apache   Deployment/php-apache   209%/50%   1         20        5          89m
php-apache   Deployment/php-apache   110%/50%   1         20        5          90m
php-apache   Deployment/php-apache   110%/50%   1         20        10         90m
php-apache   Deployment/php-apache   110%/50%   1         20        11         90m
php-apache   Deployment/php-apache   47%/50%    1         20        11         91m
.
.
.
php-apache   Deployment/php-apache   70%/50%    1         40        11         142m	# Replicas 2 --> 4
php-apache   Deployment/php-apache   70%/50%    1         40        16         142m
php-apache   Deployment/php-apache   64%/50%    1         40        16         143m
php-apache   Deployment/php-apache   64%/50%    1         40        21         143m
php-apache   Deployment/php-apache   54%/50%    1         40        21         144m
php-apache   Deployment/php-apache   51%/50%    1         40        21         145m
php-apache   Deployment/php-apache   50%/50%    1         40        21         147m