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don't return to defaults if aws-ha-release fails because we might kill healthy instances and leave unhealthy ones

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Anuj Biyani 2013-04-17 13:27:36 -07:00
parent 1a9c38f975
commit b2ecd4f19f
1 changed files with 16 additions and 13 deletions
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29
aws-ha-release/aws-ha-release.sh
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@ -33,16 +33,6 @@ return_as_initial_desiredcapacity()
as-update-auto-scaling-group $asg_group_name --region $region --desired-capacity=$asg_initial_desired_capacity
}
return_to_defaults()
{
#return max-size to initial size
return_as_initial_maxsize
#return temporary desired-capacity to initial desired-capacity
return_as_initial_desiredcapacity
as-resume-processes $asg_group_name
}
#set application defaults
app_name=`basename $0`
elb_timeout=60
@ -124,7 +114,8 @@ fi
#echo a list of Instances that are slated for termination
echo -e "The list of Instances in Auto Scaling Group $asg_group_name that will be terminated is below:\n$asg_instance_list"
as-suspend-processes $asg_group_name --processes ReplaceUnhealthy,AlarmNotification,ScheduledActions,AZRebalance
as_processes_to_suspend="ReplaceUnhealthy,AlarmNotification,ScheduledActions,AZRebalance"
as-suspend-processes $asg_group_name --processes $as_processes_to_suspend
#if the desired-capacity of an Auto Scaling Group group is greater than or equal to the max-size of an Auto Scaling Group, the max-size must be increased by 1 to cycle instances while maintaining desired-capacity. This is particularly true of groups of 1 instance (where we'd be removing all instances if we cycled).
if [[ $asg_initial_desired_capacity -ge $asg_initial_max_size ]]
@ -149,8 +140,14 @@ do
do
if [[ $inservice_time_taken -gt $inservice_time_allowed ]]
then echo "During the last $inservice_time_allowed seconds the InService capacity of the $asg_group_name Auto Scaling Group did not meet the Auto Scaling Group's desired capacity of $asg_temporary_desired_capacity." 1>&2
echo "Because we can't be sure that instances created by this script are healthy, settings that were changed are being left as is. Settings that were changed:"
return_to_defaults
if [[ $max_size_change -eq 1 ]]
then echo "max size was increased by $max_size_change"
fi
echo "desired capacity was increased by 1"
echo "AutoScaling processes \"$as_processes_to_suspend\" were suspended."
exit 79
fi
@ -190,4 +187,10 @@ do
as-terminate-instance-in-auto-scaling-group --region $region --instance $instance_selected --no-decrement-desired-capacity --force > /dev/null
done
return_to_defaults
#return max-size to initial size
return_as_initial_maxsize
#return temporary desired-capacity to initial desired-capacity
return_as_initial_desiredcapacity
as-resume-processes $asg_group_name