Merge branch 'master' of https://github.com/colinbjohnson/aws-missing-tools
This commit is contained in:
commit
32509b24c0
|
@ -86,11 +86,14 @@ fi
|
||||||
if [[ `echo -e "$asg_result" | grep -c "^AUTO-SCALING-GROUP"` < 1 ]]
|
if [[ `echo -e "$asg_result" | grep -c "^AUTO-SCALING-GROUP"` < 1 ]]
|
||||||
then echo "No Auto Scaling Group was found. Because no Auto Scaling Group has been found, $app_name does not know which Auto Scaling Group should have Instances terminated." 1>&2 ; exit 64
|
then echo "No Auto Scaling Group was found. Because no Auto Scaling Group has been found, $app_name does not know which Auto Scaling Group should have Instances terminated." 1>&2 ; exit 64
|
||||||
fi
|
fi
|
||||||
#confirms that the selected Auto Scaling Group is not currently in state "Suspended Processing" - the "Suspending Processing" state prevents the termination of Auto Scaling Group instances and thus prevents aws-ha-release from running properly
|
#confirms that certain Auto Scaling processes are not suspended. For certain processes, the "Suspending Processing" state prevents the termination of Auto Scaling Group instances and thus prevents aws-ha-release from running properly.
|
||||||
if [[ `echo -e "$asg_result" | grep -c "SUSPENDED-PROCESS"` > 1 ]]
|
necessary_processes=(RemoveFromLoadBalancerLowPriority Terminate Launch HealthCheck AddToLoadBalancer)
|
||||||
then echo "Scaling Processes for the Auto Scaling Group $asg_group_name are currently suspended. $app_name will now exit as Scaling Processes are required for $app_name to run properly." 1>&2 ; exit 77
|
for process in "${necessary_processes[@]}"
|
||||||
fi
|
do
|
||||||
|
if [[ `echo -e "$asg_result" | grep -c "SUSPENDED-PROCESS$delimiter$process"` > 0 ]]
|
||||||
|
then echo "Scaling Process $process for the Auto Scaling Group $asg_group_name is currently suspended. $app_name will now exit as Scaling Processes ${necessary_processes[@]} are required for $app_name to run properly." 1>&2 ; exit 77
|
||||||
|
fi
|
||||||
|
done
|
||||||
|
|
||||||
#gets Auto Scaling Group max-size
|
#gets Auto Scaling Group max-size
|
||||||
asg_initial_max_size=`echo $asg_result | grep ^AUTO-SCALING-GROUP | cut -d "$delimiter" -f 9`
|
asg_initial_max_size=`echo $asg_result | grep ^AUTO-SCALING-GROUP | cut -d "$delimiter" -f 9`
|
||||||
|
@ -100,7 +103,10 @@ asg_initial_desired_capacity=`echo "$asg_result" | grep ^AUTO-SCALING-GROUP | cu
|
||||||
asg_temporary_desired_capacity=$((asg_initial_desired_capacity+1))
|
asg_temporary_desired_capacity=$((asg_initial_desired_capacity+1))
|
||||||
#gets list of Auto Scaling Group Instances - these Instances will be terminated
|
#gets list of Auto Scaling Group Instances - these Instances will be terminated
|
||||||
asg_instance_list=`echo "$asg_result" | grep ^INSTANCE | cut -d "$delimiter" -f 2`
|
asg_instance_list=`echo "$asg_result" | grep ^INSTANCE | cut -d "$delimiter" -f 2`
|
||||||
asg_elb=`echo "$asg_result" | grep ^AUTO-SCALING-GROUP | cut -d "$delimiter" -f 6`
|
|
||||||
|
#builds an array of load balancers
|
||||||
|
IFS=',' read -a asg_elbs <<< `echo "$asg_result" | grep ^AUTO-SCALING-GROUP | cut -d "$delimiter" -f 6`
|
||||||
|
|
||||||
#if the max-size of the Auto Scaling Group is zero there is no reason to run
|
#if the max-size of the Auto Scaling Group is zero there is no reason to run
|
||||||
if [[ $asg_initial_max_size -eq 0 ]]
|
if [[ $asg_initial_max_size -eq 0 ]]
|
||||||
then echo "$asg_group_name has a max-size of 0. As the Auto Scaling Group \"$asg_group_name\" has no active Instances there is no reason to run." ; exit 79
|
then echo "$asg_group_name has a max-size of 0. As the Auto Scaling Group \"$asg_group_name\" has no active Instances there is no reason to run." ; exit 79
|
||||||
|
@ -108,6 +114,9 @@ fi
|
||||||
#echo a list of Instances that are slated for termination
|
#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"
|
echo -e "The list of Instances in Auto Scaling Group $asg_group_name that will be terminated is below:\n$asg_instance_list"
|
||||||
|
|
||||||
|
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 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 ]]
|
if [[ $asg_initial_desired_capacity -ge $asg_initial_max_size ]]
|
||||||
then echo "$asg_group_name has a max-size of $asg_initial_max_size. In order to recycle instances max-size will be temporarily increased by 1 to max-size $asg_temporary_max_size."
|
then echo "$asg_group_name has a max-size of $asg_initial_max_size. In order to recycle instances max-size will be temporarily increased by 1 to max-size $asg_temporary_max_size."
|
||||||
|
@ -124,33 +133,57 @@ as-update-auto-scaling-group $asg_group_name --region $region --desired-capacity
|
||||||
#and begin recycling instances
|
#and begin recycling instances
|
||||||
for instance_selected in $asg_instance_list
|
for instance_selected in $asg_instance_list
|
||||||
do
|
do
|
||||||
|
all_instances_inservice=0
|
||||||
|
|
||||||
#the while loop below sleeps for the auto scaling group to have an InService capacity that is equal to the desired-capacity + 1
|
#the while loop below sleeps for the auto scaling group to have an InService capacity that is equal to the desired-capacity + 1
|
||||||
while [[ $inservice_instance_count -lt $asg_temporary_desired_capacity ]]
|
while [[ $all_instances_inservice -eq 0 ]]
|
||||||
do
|
do
|
||||||
if [[ $inservice_time_taken -gt $inservice_time_allowed ]]
|
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
|
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
|
||||||
#return max-size to initial size
|
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_as_initial_maxsize
|
|
||||||
#return temporary desired-capacity to initial desired-capacity
|
if [[ $max_size_change -eq 1 ]]
|
||||||
return_as_initial_desiredcapacity
|
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
|
exit 79
|
||||||
fi
|
fi
|
||||||
inservice_instance_list=`elb-describe-instance-health $asg_elb --region $region --show-long | grep InService`
|
|
||||||
inservice_instance_count=`echo "$inservice_instance_list" | wc -l`
|
for index in "${!asg_elbs[@]}"
|
||||||
|
do
|
||||||
|
inservice_instance_list=`elb-describe-instance-health ${asg_elbs[$index]} --region $region --show-long | grep InService`
|
||||||
|
inservice_instance_count=`echo "$inservice_instance_list" | wc -l`
|
||||||
|
|
||||||
|
if [ $index -eq 0 ]
|
||||||
|
then [ $inservice_instance_count -eq $asg_temporary_desired_capacity ] && all_instances_inservice=1 || all_instances_inservice=0
|
||||||
|
else
|
||||||
|
[[ ($all_instances_inservice -eq 1) && ($inservice_instance_count -eq $asg_temporary_desired_capacity) ]] && all_instances_inservice=1 || all_instances_inservice=0
|
||||||
|
fi
|
||||||
|
done
|
||||||
|
|
||||||
#sleeps a particular amount of time
|
#sleeps a particular amount of time
|
||||||
sleep $inservice_polling_time
|
sleep $inservice_polling_time
|
||||||
|
|
||||||
inservice_time_taken=$(($inservice_time_taken+$inservice_polling_time))
|
inservice_time_taken=$(($inservice_time_taken+$inservice_polling_time))
|
||||||
echo $inservice_instance_count "Instances are InService status. $asg_temporary_desired_capacity Instances are required to terminate the next instance. $inservice_time_taken seconds have elapsed while waiting for an Instance to reach InService status."
|
echo $inservice_instance_count "Instances are InService status. $asg_temporary_desired_capacity Instances are required to terminate the next instance. $inservice_time_taken seconds have elapsed while waiting for an Instance to reach InService status."
|
||||||
#if any status in $elbinstsancehealth != "InService" repeat
|
#if any status in $elbinstancehealth != "InService" repeat
|
||||||
done
|
done
|
||||||
|
|
||||||
#if the
|
#if the
|
||||||
echo "$asg_group_name has reached a desired-capacity of $asg_temporary_desired_capacity. $app_name can now remove an Instance from service."
|
echo "$asg_group_name has reached a desired-capacity of $asg_temporary_desired_capacity. $app_name can now remove an Instance from service."
|
||||||
|
|
||||||
inservice_instance_count=0
|
inservice_instance_count=0
|
||||||
inservice_time_taken=0
|
inservice_time_taken=0
|
||||||
#remove instance from ELB - this ensures no traffic will be directed at an instance that will be terminated
|
#remove instance from ELB - this ensures no traffic will be directed at an instance that will be terminated
|
||||||
echo "Instance $instance_selected will now be deregistered from ELB \"$asg_elb.\""
|
echo "Instance $instance_selected will now be deregistered from ELBs \"${asg_elbs[@]}.\""
|
||||||
elb-deregister-instances-from-lb $asg_elb --region $region --instances $instance_selected > /dev/null
|
for elb in "${asg_elbs[@]}"
|
||||||
|
do
|
||||||
|
elb-deregister-instances-from-lb $elb --region $region --instances $instance_selected > /dev/null
|
||||||
|
done
|
||||||
|
|
||||||
#sleep for "elb_timeout" seconds so that the instance can complete all processing before being terminated
|
#sleep for "elb_timeout" seconds so that the instance can complete all processing before being terminated
|
||||||
sleep $elb_timeout
|
sleep $elb_timeout
|
||||||
#terminates a pre-existing instance within the autoscaling group
|
#terminates a pre-existing instance within the autoscaling group
|
||||||
|
@ -160,5 +193,8 @@ done
|
||||||
|
|
||||||
#return max-size to initial size
|
#return max-size to initial size
|
||||||
return_as_initial_maxsize
|
return_as_initial_maxsize
|
||||||
|
|
||||||
#return temporary desired-capacity to initial desired-capacity
|
#return temporary desired-capacity to initial desired-capacity
|
||||||
return_as_initial_desiredcapacity
|
return_as_initial_desiredcapacity
|
||||||
|
|
||||||
|
as-resume-processes $asg_group_name
|
||||||
|
|
Loading…
Reference in New Issue
Block a user