From 7f8f57a6d200b7113a77409d6c9e0f9dac9e1d12 Mon Sep 17 00:00:00 2001 From: Brett Porter Date: Thu, 6 Nov 2014 12:51:01 +1000 Subject: [PATCH] update aws-ha-release to use AWS CLI --- aws-ha-release/aws-ha-release.sh | 46 +++++++++++++++----------------- 1 file changed, 21 insertions(+), 25 deletions(-) diff --git a/aws-ha-release/aws-ha-release.sh b/aws-ha-release/aws-ha-release.sh index c3b405e..5133079 100755 --- a/aws-ha-release/aws-ha-release.sh +++ b/aws-ha-release/aws-ha-release.sh @@ -8,7 +8,7 @@ #confirms that executables required for succesful script execution are available prerequisitecheck() { - for prerequisite in basename grep cut as-describe-auto-scaling-groups as-update-auto-scaling-group elb-deregister-instances-from-lb as-terminate-instance-in-auto-scaling-group elb-describe-instance-health + for prerequisite in basename grep cut aws do #use of "hash" chosen as it is a shell builtin and will add programs to hash table, possibly speeding execution. Use of type also considered - open to suggestions. hash $prerequisite &> /dev/null @@ -23,14 +23,14 @@ return_as_initial_maxsize() if [[ $max_size_change -eq 1 ]] then echo "$asg_group_name had its max-size increased temporarily by 1 to a max-size of $asg_temporary_max_size. $app_name will now return the max-size of $asg_group_name to its original max-size of $asg_initial_max_size." #decrease max-size by 1 - as-update-auto-scaling-group $asg_group_name --region $region --max-size=$asg_initial_max_size + aws autoscaling update-auto-scaling-group --auto-scaling-group-name $asg_group_name --region $region --max-size=$asg_initial_max_size fi } return_as_initial_desiredcapacity() { echo "$asg_group_name had its desired-capacity increased temporarily by 1 to a desired-capacity of $asg_temporary_desired_capacity. $app_name will now return the desired-capacity of $asg_group_name to its original desired-capacity of $asg_initial_desired_capacity." - as-update-auto-scaling-group $asg_group_name --region $region --desired-capacity=$asg_initial_desired_capacity + aws autoscaling update-auto-scaling-group --auto-scaling-group-name $asg_group_name --region $region --desired-capacity=$asg_initial_desired_capacity } #set application defaults @@ -72,40 +72,36 @@ case $region in esac #creates variable containing Auto Scaling Group -asg_result=`as-describe-auto-scaling-groups $asg_group_name --show-long --max-records 1000 --region $region --delimiter $delimiter` +asg_result=`aws autoscaling describe-auto-scaling-groups --auto-scaling-group-name $asg_group_name --region $region` #validate Auto Scaling Group Exists -#user response for Auto Scaling Group lookup - alerts user if Auto Scaling Group was not found. -if [[ $asg_result = "No AutoScalingGroups found" ]] - then echo "The Auto Scaling Group named \"$asg_group_name\" does not exist in the region named \"$region\". You must specify an Auto Scaling Group that exists." 1>&2 ; exit 64 -fi -#validate - the pipeline of echo -e "$asg_result" | grep -c "AUTO-SCALING-GROUP" must only return one group found - in the case below - more than one group has been found -if [[ `echo -e "$asg_result" | grep -c "^AUTO-SCALING-GROUP"` > 1 ]] +#validate - the pipeline of echo -e "$asg_result" | grep -c "AutoScalingGroupARN" must only return one group found - in the case below - more than one group has been found +if [[ `echo -e "$asg_result" | grep -c "AutoScalingGroupARN"` > 1 ]] then echo "More than one Auto Scaling Group found. As more than one Auto Scaling Group has been found, $app_name does not know which Auto Scaling Group should have Instances terminated." 1>&2 ; exit 64 fi -#validate - the pipeline of echo -e "$asg_result" | grep -c "AUTO-SCALING-GROUP" must only return one group found -if [[ `echo -e "$asg_result" | grep -c "^AUTO-SCALING-GROUP"` < 1 ]] +#validate - the pipeline of echo -e "$asg_result" | grep -c "AutoScalingGroupARN" must only return one group found +if [[ `echo -e "$asg_result" | grep -c "AutoScalingGroupARN"` < 1 ]] then echo "No Auto Scaling Group was found. Because no Auto Scaling Group has been found, $app_name does not know which Auto Scaling Group should have Instances terminated." 1>&2 ; exit 64 fi #confirms that certain Auto Scaling processes are not suspended. For certain processes, the "Suspending Processing" state prevents the termination of Auto Scaling Group instances and thus prevents aws-ha-release from running properly. necessary_processes=(RemoveFromLoadBalancerLowPriority Terminate Launch HealthCheck AddToLoadBalancer) for process in "${necessary_processes[@]}" do - if [[ `echo -e "$asg_result" | grep -c "SUSPENDED-PROCESS$delimiter$process"` > 0 ]] + if [[ `echo -e "$asg_result" | grep -c "SuspensionReason"` > 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 -asg_initial_max_size=`echo $asg_result | grep ^AUTO-SCALING-GROUP | cut -d "$delimiter" -f 9` +asg_initial_max_size=`echo $asg_result | awk '/MaxSize/{ print $2 }' RS=,` asg_temporary_max_size=$(($asg_initial_max_size+1)) #gets Auto Scaling Group desired-capacity -asg_initial_desired_capacity=`echo "$asg_result" | grep ^AUTO-SCALING-GROUP | cut -d "$delimiter" -f 10` +asg_initial_desired_capacity=`echo $asg_result | awk '/DesiredCapacity/{ print $2 }' RS=,` asg_temporary_desired_capacity=$((asg_initial_desired_capacity+1)) #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 "$asg_result" | grep InstanceId | sed 's/.*i-/i-/' | sed 's/",//'` #builds an array of load balancers -IFS=',' read -a asg_elbs <<< `echo "$asg_result" | grep ^AUTO-SCALING-GROUP | cut -d "$delimiter" -f 6` +asg_elbs=`aws autoscaling describe-auto-scaling-groups --auto-scaling-group-name $asg_group_name --region $region --output text | grep LOADBALANCERNAMES | sed "s/LOADBALANCERNAMES[[:space:]]//"` #if the max-size of the Auto Scaling Group is zero there is no reason to run if [[ $asg_initial_max_size -eq 0 ]] @@ -114,21 +110,21 @@ 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_processes_to_suspend="ReplaceUnhealthy,AlarmNotification,ScheduledActions,AZRebalance" -as-suspend-processes $asg_group_name --processes $as_processes_to_suspend --region $region +as_processes_to_suspend="ReplaceUnhealthy AlarmNotification ScheduledActions AZRebalance" +aws autoscaling suspend-processes --auto-scaling-group-name $asg_group_name --scaling-processes $as_processes_to_suspend --region $region #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 $asg_initial_max_size ]] then echo "$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." #increase max-size by 1 - as-update-auto-scaling-group $asg_group_name --region $region --max-size=$asg_temporary_max_size + aws autoscaling update-auto-scaling-group --auto-scaling-group-name $asg_group_name --region $region --max-size=$asg_temporary_max_size #sets the flag that max-size has been changed max_size_change="1" fi #increase groups desired capacity to allow for instance recycling without decreasing available instances below initial capacity echo "$asg_group_name is currently at $asg_initial_desired_capacity desired-capacity. $app_name will increase desired-capacity by 1 to desired-capacity $asg_temporary_desired_capacity." -as-update-auto-scaling-group $asg_group_name --region $region --desired-capacity=$asg_temporary_desired_capacity +aws autoscaling update-auto-scaling-group --auto-scaling-group-name $asg_group_name --region $region --desired-capacity=$asg_temporary_desired_capacity #and begin recycling instances for instance_selected in $asg_instance_list @@ -154,7 +150,7 @@ do for index in "${!asg_elbs[@]}" do - inservice_instance_list=`elb-describe-instance-health ${asg_elbs[$index]} --region $region --show-long | grep InService` + inservice_instance_list=`aws elb describe-instance-health --load-balancer-name ${asg_elbs[$index]} --region $region --output text | grep InService` inservice_instance_count=`echo "$inservice_instance_list" | wc -l` if [ $index -eq 0 ] @@ -181,14 +177,14 @@ do echo "Instance $instance_selected will now be deregistered from ELBs \"${asg_elbs[@]}.\"" for elb in "${asg_elbs[@]}" do - elb-deregister-instances-from-lb $elb --region $region --instances $instance_selected > /dev/null + aws elb deregister-instances-from-load-balancer --load-balancer-name $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 $elb_timeout #terminates a pre-existing instance within the autoscaling group echo "Instance $instance_selected will now be terminated. By terminating this Instance, the actual capacity will be decreased to 1 under desired-capacity." - as-terminate-instance-in-auto-scaling-group --region $region --instance $instance_selected --no-decrement-desired-capacity --force > /dev/null + aws autoscaling terminate-instance-in-auto-scaling-group --region $region --instance-id $instance_selected --no-should-decrement-desired-capacity > /dev/null done #return max-size to initial size @@ -197,4 +193,4 @@ return_as_initial_maxsize #return temporary desired-capacity to initial desired-capacity return_as_initial_desiredcapacity -as-resume-processes $asg_group_name --region $region +aws autoscaling resume-processes --auto-scaling-group-name $asg_group_name --region $region