Created
April 10, 2015 01:29
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scale-fleet
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| #!/bin/bash | |
| FLEET_HOST=http://gotham.gettyimages.io:8080 | |
| SERVICE=$1 | |
| DESIRED_SIZE=$2 | |
| INSTANCES=($(curl -s $FLEET_HOST/fleet/v1/units | jq ".units[].name | select(startswith(\"$SERVICE@\"))" | grep '\w@\d\.service')) | |
| CURRENT_SIZE=${#INSTANCES[@]} | |
| echo "Current instance count for $service is: $CURRENT_SIZE" | |
| if [[ $DESIRED_SIZE = $CURRENT_SIZE ]]; then | |
| echo "doing nothing, current size is equal desired size" | |
| elif [[ $DESIRED_SIZE < $CURRENT_SIZE ]]; then | |
| echo "going to scale down instance $CURRENT_SIZE" | |
| until [[ $DESIRED_SIZE = $CURRENT_SIZE ]]; do | |
| curl -X DELETE $FLEET_HOST/fleet/v1/units/${SERVICE}@${CURRENT_SIZE}.service | |
| let CURRENT_SIZE=CURRENT_SIZE-1 | |
| done | |
| echo "new instance count is $CURRENT_SIZE" | |
| else | |
| echo "going to scale up to $DESIRED_SIZE" | |
| payload=`curl -s $FLEET_HOST/fleet/v1/units/${SERVICE}@.service | jq '. | { "desiredState":"launched", "options": .options }'` | |
| until [[ $DESIRED_SIZE = $CURRENT_SIZE ]]; do | |
| let CURRENT_SIZE=CURRENT_SIZE+1 | |
| curl -X PUT -d "${payload}" -H 'Content-Type: application/json' $FLEET_HOST/fleet/v1/units/$SERVICE@${CURRENT_SIZE}.service | |
| done | |
| echo "new instance count is $CURRENT_SIZE" | |
| fi |
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