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delete-gcp-resources.yml
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name: Delete GCP resources
on:
# Run daily, when most devs aren't working
# 0700 UTC is after AEST working hours but before ET working hours
schedule:
- cron: "0 7 * * *"
workflow_dispatch:
env:
# Delete all resources created before $DELETE_INSTANCE_DAYS days ago.
# We keep this short to reduce CPU, RAM, and storage costs.
DELETE_INSTANCE_DAYS: 3
# Delete all other resources created before $DELETE_AGE_DAYS days ago.
# We keep this short to reduce storage costs.
DELETE_AGE_DAYS: 2
# But keep the latest $KEEP_LATEST_IMAGE_COUNT images of each type.
# We keep this small to reduce storage costs.
KEEP_LATEST_IMAGE_COUNT: 2
jobs:
delete-resources:
name: Delete old GCP resources
runs-on: ubuntu-latest
permissions:
contents: 'read'
id-token: 'write'
steps:
- uses: actions/[email protected]
with:
persist-credentials: false
# Setup gcloud CLI
- name: Authenticate to Google Cloud
id: auth
uses: google-github-actions/[email protected]
with:
retries: '3'
workload_identity_provider: 'projects/143793276228/locations/global/workloadIdentityPools/github-actions/providers/github-oidc'
service_account: '[email protected]'
token_format: 'access_token'
# Deletes all instances older than $DELETE_INSTANCE_DAYS days.
#
# We only delete instances that end in 7 or more hex characters,
# to avoid deleting managed instance groups and manually created instances.
#
# ${INSTANCE_AND_ZONE} expands to:
# <instance-name> --zone=<zone-name>
# so it can't be shell-quoted.
- name: Delete old instances
run: |
DELETE_BEFORE_DATE=$(date --date="$DELETE_INSTANCE_DAYS days ago" '+%Y%m%d')
IFS=$'\n'
INSTANCES=$(gcloud compute instances list --sort-by=creationTimestamp --filter="name~-[0-9a-f]{7,}$ AND creationTimestamp < $DELETE_BEFORE_DATE" --format='value(NAME,ZONE)' | \
sed 's/\(.*\)\t\(.*\)/\1 --zone=\2/')
for INSTANCE_AND_ZONE in $INSTANCES
do
IFS=$' '
gcloud compute instances delete --verbosity=info ${INSTANCE_AND_ZONE} --delete-disks=all || continue
IFS=$'\n'
done
# Deletes all the instance templates older than $DELETE_AGE_DAYS days.
- name: Delete old instance templates
run: |
DELETE_BEFORE_DATE=$(date --date="$DELETE_AGE_DAYS days ago" '+%Y%m%d')
TEMPLATES=$(gcloud compute instance-templates list --sort-by=creationTimestamp --filter="name~-[0-9a-f]{7,}$ AND creationTimestamp < $DELETE_BEFORE_DATE" --format='value(NAME)')
for TEMPLATE in $TEMPLATES
do
gcloud compute instance-templates delete "${TEMPLATE}" || continue
done
# Deletes all the disks older than $DELETE_AGE_DAYS days.
#
# Disks that are attached to an instance template can't be deleted, so it is safe to try to delete all disks here.
#
# ${DISK_AND_LOCATION} expands to:
# <disk-name> --[zone|region]=<location-name>
# so it can't be shell-quoted.
- name: Delete old disks
run: |
DELETE_BEFORE_DATE=$(date --date="$DELETE_AGE_DAYS days ago" '+%Y%m%d')
IFS=$'\n'
# Disks created by PR jobs, and other jobs that use a commit hash
COMMIT_DISKS=$(gcloud compute disks list --sort-by=creationTimestamp --filter="name~-[0-9a-f]{7,}$ AND creationTimestamp < $DELETE_BEFORE_DATE" --format='value(NAME,LOCATION,LOCATION_SCOPE)' | \
sed 's/\(.*\)\t\(.*\)\t\(.*\)/\1 --\3=\2/')
for DISK_AND_LOCATION in $COMMIT_DISKS
do
IFS=$' '
gcloud compute disks delete --verbosity=info ${DISK_AND_LOCATION} || continue
IFS=$'\n'
done
IFS=$'\n'
# Disks created by managed instance groups, and other jobs that start with "zebrad-"
ZEBRAD_DISKS=$(gcloud compute disks list --sort-by=creationTimestamp --filter="name~^zebrad- AND creationTimestamp < $DELETE_BEFORE_DATE" --format='value(NAME,LOCATION,LOCATION_SCOPE)' | \
sed 's/\(.*\)\t\(.*\)\t\(.*\)/\1 --\3=\2/')
for DISK_AND_LOCATION in $ZEBRAD_DISKS
do
IFS=$' '
gcloud compute disks delete --verbosity=info ${DISK_AND_LOCATION} || continue
IFS=$'\n'
done
# Deletes cache images older than $DELETE_AGE_DAYS days.
#
# Keeps all images younger than $DELETE_AGE_DAYS.
# Also keeps $KEEP_LATEST_IMAGE_COUNT older images of each type:
# - zebrad checkpoint cache
# - zebrad tip cache
# - lightwalletd + zebrad tip cache
#
# TODO:
# - keep the latest $KEEP_LATEST_IMAGE_COUNT, if there are at least that many recent images, delete all the outdated images
# - when we add testnet to the workflows, keep the latest $KEEP_LATEST_IMAGE_COUNT testnet images,
# and the latest $KEEP_LATEST_IMAGE_COUNT mainnet images.
- name: Delete old cache disks
run: |
DELETE_BEFORE_DATE=$(date --date="$DELETE_AGE_DAYS days ago" '+%Y%m%d')
ZEBRAD_CHECKPOINT_IMAGES=$(gcloud compute images list --sort-by=~creationTimestamp --filter="name~^zebrad-cache-.*net-checkpoint AND creationTimestamp < $DELETE_BEFORE_DATE" --format='value(NAME)')
KEPT_IMAGES=0
for IMAGE in $ZEBRAD_CHECKPOINT_IMAGES
do
if [[ "$KEPT_IMAGES" -lt "$KEEP_LATEST_IMAGE_COUNT" ]];
then
KEPT_IMAGES=$((KEPT_IMAGES+1))
echo "Keeping image $KEPT_IMAGES named $IMAGE"
continue
fi
gcloud compute images delete "${IMAGE}" || continue
done
ZEBRAD_TIP_IMAGES=$(gcloud compute images list --sort-by=~creationTimestamp --filter="name~^zebrad-cache-.*net-tip AND creationTimestamp < $DELETE_BEFORE_DATE" --format='value(NAME)')
KEPT_IMAGES=0
for IMAGE in $ZEBRAD_TIP_IMAGES
do
if [[ "$KEPT_IMAGES" -lt "$KEEP_LATEST_IMAGE_COUNT" ]];
then
KEPT_IMAGES=$((KEPT_IMAGES+1))
echo "Keeping image $KEPT_IMAGES named $IMAGE"
continue
fi
gcloud compute images delete "${IMAGE}" || continue
done
LWD_TIP_IMAGES=$(gcloud compute images list --sort-by=~creationTimestamp --filter="name~^lwd-cache-.*net-tip AND creationTimestamp < $DELETE_BEFORE_DATE" --format='value(NAME)')
KEPT_IMAGES=0
for IMAGE in $LWD_TIP_IMAGES
do
if [[ "$KEPT_IMAGES" -lt "$KEEP_LATEST_IMAGE_COUNT" ]];
then
KEPT_IMAGES=$((KEPT_IMAGES+1))
echo "Keeping image $KEPT_IMAGES named $IMAGE"
continue
fi
gcloud compute images delete "${IMAGE}" || continue
done