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Improve Swarm support (#333)

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* Query for labeled services as well

* Try scaling down services

* Scale services back up

* Use progress tool from Docker CLI

* In test, label both services

* Clean up error and log messages

* Document scale-up/down approach in docs

* Downgrade Docker CLI to match client

* Document services stats

* Do not rely on PreviousSpec for storing desired replica count

* Log warnings from Docker when updating services

* Check whether container and service labels collide

* Document script behavior on label collision

* Add additional check if all containers have been removed

* Scale services concurrently

* Move docker interaction code into own file

* Factor out code for service updating

* Time out after five minutes of not reaching desired container count

* Inline handling of in-swarm container level restart

* Timer is more suitable for timeout race

* Timeout when scaling down services should be configurable

* Choose better filename

* Reflect changes in naming

* Rename and deprecate BACKUP_STOP_CONTAINER_LABEL

* Improve logging

* Further simplify logging
This commit is contained in:
Frederik Ring
2024-01-31 12:17:41 +01:00
committed by GitHub
parent 2065fb2815
commit c3daeacecb
18 changed files with 640 additions and 145 deletions
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21
docs/reference/index.md
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@@ -316,15 +316,22 @@ You can populate below template according to your requirements and use it as you
# GPG_PASSPHRASE="<xxx>"
########### STOPPING CONTAINERS DURING BACKUP
########### STOPPING CONTAINERS AND SERVICES DURING BACKUP
# Containers can be stopped by applying a
# `docker-volume-backup.stop-during-backup` label. By default, all containers
# that are labeled with `true` will be stopped. If you need more fine grained
# control (e.g. when running multiple containers based on this image), you can
# override this default by specifying a different value here.
# Containers or services can be stopped by applying a
# `docker-volume-backup.stop-during-backup` label. By default, all containers and
# services that are labeled with `true` will be stopped. If you need more fine
# grained control (e.g. when running multiple containers based on this image),
# you can override this default by specifying a different value here.
# BACKUP_STOP_DURING_BACKUP_LABEL="service1"
# BACKUP_STOP_CONTAINER_LABEL="service1"
# When trying to scale down Docker Swarm services, give up after
# the specified amount of time in case the service has not converged yet.
# In case you need to adjust this timeout, supply a duration
# value as per https://pkg.go.dev/time#ParseDuration to `BACKUP_STOP_SERVICE_TIMEOUT`.
# Defaults to 5 minutes.
# BACKUP_STOP_SERVICE_TIMEOUT="5m"
########### EXECUTING COMMANDS IN CONTAINERS PRE/POST BACKUP