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Added InstanceName tag to snapshots on backup #74

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Added InstanceName tag to snapshots on backup #74

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23 changes: 19 additions & 4 deletions ec2-automate-backup/ec2-automate-backup-awscli.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ get_EBS_List() {
esac
#creates a list of all ebs volumes that match the selection string from above
ebs_backup_list=$(aws ec2 describe-volumes --region $region $ebs_selection_string --output text --query 'Volumes[*].VolumeId')
#takes the output of the previous command
#takes the output of the previous command
ebs_backup_list_result=$(echo $?)
if [[ $ebs_backup_list_result -gt 0 ]]; then
echo -e "An error occurred when running ec2-describe-volumes. The error returned is below:\n$ebs_backup_list_complete" 1>&2 ; exit 70
Expand All @@ -53,6 +53,10 @@ get_EBS_List() {
create_EBS_Snapshot_Tags() {
#snapshot tags holds all tags that need to be applied to a given snapshot - by aggregating tags we ensure that ec2-create-tags is called only onece
snapshot_tags=""
#if $instance_name_tag_create is true then append ec2_volume_instance_name to the variable $snapshot_tags
if $instance_name_tag_create; then
snapshot_tags="$snapshot_tags Key=InstanceName,Value=$ec2_volume_instance_name"
fi
#if $name_tag_create is true then append ec2ab_${ebs_selected}_$current_date to the variable $snapshot_tags
if $name_tag_create; then
snapshot_tags="$snapshot_tags Key=Name,Value=ec2ab_${ebs_selected}_$current_date"
Expand Down Expand Up @@ -112,7 +116,7 @@ purge_EBS_Snapshots() {
# snapshot_purge_allowed is a string containing the SnapshotIDs of snapshots
# that contain a tag with the key value/pair PurgeAllow=true
snapshot_purge_allowed=$(aws ec2 describe-snapshots --region $region --filters Name=tag:PurgeAllow,Values=true --output text --query 'Snapshots[*].SnapshotId')

for snapshot_id_evaluated in $snapshot_purge_allowed; do
#gets the "PurgeAfterFE" date which is in UTC with UNIX Time format (or xxxxxxxxxx / %s)
purge_after_fe=$(aws ec2 describe-snapshots --region $region --snapshot-ids $snapshot_id_evaluated --output text | grep ^TAGS.*PurgeAfterFE | cut -f 3)
Expand Down Expand Up @@ -145,9 +149,11 @@ hostname_tag_create=false
user_tags=false
#sets the Purge Snapshot feature to false - if purge_snapshots=true then snapshots will be purged
purge_snapshots=false
#sets the "InstanceName" tag set for a snapshot to be false
instance_name_tag_create=false
#handles options processing

while getopts :s:c:r:v:t:k:pnhu opt; do
while getopts :s:c:r:v:t:k:pnhui opt; do
case $opt in
s) selection_method="$OPTARG" ;;
c) cron_primer="$OPTARG" ;;
Expand All @@ -159,6 +165,7 @@ while getopts :s:c:r:v:t:k:pnhu opt; do
h) hostname_tag_create=true ;;
p) purge_snapshots=true ;;
u) user_tags=true ;;
i) instance_name_tag_create=true ;;
*) echo "Error with Options Input. Cause of failure is most likely that an unsupported parameter was passed or a parameter was passed without a corresponding option." 1>&2 ; exit 64 ;;
esac
done
Expand Down Expand Up @@ -203,11 +210,19 @@ get_EBS_List

#the loop below is called once for each volume in $ebs_backup_list - the currently selected EBS volume is passed in as "ebs_selected"
for ebs_selected in $ebs_backup_list; do
if $instance_name_tag_create; then
#get the id of the instance the volume is attached to
ec2_volume_instance_id=$(aws ec2 describe-volumes --output text --volume-id $ebs_selected --query 'Volumes[*].[Attachments[*].InstanceId]')
#get the name of the instance for the instance id
ec2_volume_instance_name=$(aws ec2 describe-instances --output text --instance-id $ec2_volume_instance_id --query 'Reservations[].Instances[].Tags[?Key==`Name`].Value')
#replace spaces with underscores (issue with tagging)
ec2_volume_instance_name=$(echo "$ec2_volume_instance_name"|sed -e 's/ /_/g')
fi
ec2_snapshot_description="ec2ab_${ebs_selected}_$current_date"
ec2_snapshot_resource_id=$(aws ec2 create-snapshot --region $region --description $ec2_snapshot_description --volume-id $ebs_selected --output text --query SnapshotId 2>&1)
if [[ $? != 0 ]]; then
echo -e "An error occurred when running ec2-create-snapshot. The error returned is below:\n$ec2_create_snapshot_result" 1>&2 ; exit 70
fi
fi
create_EBS_Snapshot_Tags
done

Expand Down