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@MattHealy
Created August 8, 2017 12:43
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Update an existing AWS Launch Configuration to use a new AMI image
#!/bin/bash
oldconfigname="$1"
newconfigname="$2"
ami="$3"
KEYNAME="my_keypair_name"
ASGROUP="my_autoscaling_group_name"
SECURITYGROUP="sg-1234"
INSTANCETYPE="t2.micro"
if [ "$oldconfigname" = "" ]; then
echo "Usage: ./rotate-ami-launch-config.sh <old_launch_config_name> <new_launch_config_name> <new_ami_id>"
exit
fi
if [ "$newconfigname" = "" ]; then
echo "Usage: ./rotate-ami-launch-config.sh <old_launch_config_name> <new_launch_config_name> <new_ami_id>"
exit
fi
if [ "$ami" = "" ]; then
echo "Usage: ./rotate-ami-launch-config.sh <old_launch_config_name> <new_launch_config_name> <new_ami_id>"
exit
fi
echo "Creating new launch configuration"
aws autoscaling create-launch-configuration \
--launch-configuration-name "$newconfigname" \
--key-name "$KEYNAME" \
--image-id "$ami" \
--instance-type "$INSTANCETYPE" \
--security-groups "$SECURITYGROUP" \
--block-device-mappings "[{\"DeviceName\": \"/dev/xvda\",\"Ebs\":{\"VolumeSize\":8,\"VolumeType\":\"gp2\",\"DeleteOnTermination\":true}}]"
echo "Updating autoscaling group"
aws autoscaling update-auto-scaling-group \
--auto-scaling-group-name "$ASGROUP" \
--launch-configuration-name "$newconfigname"
echo "Deleting old launch configuration"
aws autoscaling delete-launch-configuration --launch-configuration-name "$oldconfigname"
echo "Finished"
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