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Improve Swarm support (#333)
* 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
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@@ -76,7 +76,7 @@ Configuration, data about the backup run and helper functions will be passed to
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Here is a list of all data passed to the template:
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* `Config`: this object holds the configuration that has been passed to the script. The field names are the name of the recognized environment variables converted in PascalCase. (e.g. `BACKUP_STOP_CONTAINER_LABEL` becomes `BackupStopContainerLabel`)
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* `Config`: this object holds the configuration that has been passed to the script. The field names are the name of the recognized environment variables converted in PascalCase. (e.g. `BACKUP_STOP_DURING_BACKUP_LABEL` becomes `BackupStopDuringBackupLabel`)
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* `Error`: the error that made the backup fail. Only available in the `title_failure` and `body_failure` templates
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* `Stats`: objects that holds stats regarding script execution. In case of an unsuccessful run, some information may not be available.
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* `StartTime`: time when the script started execution
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@@ -89,6 +89,11 @@ Here is a list of all data passed to the template:
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* `ToStop`: number of containers matched by the stop rule
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* `Stopped`: number of containers successfully stopped
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* `StopErrors`: number of containers that were unable to be stopped (equal to `ToStop - Stopped`)
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* `Services`: object containing stats about the docker services (only populated when Docker is running in Swarm mode)
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* `All`: total number of services
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* `ToScaleDown`: number of containers matched by the scale down rule
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* `ScaledDwon`: number of containers successfully scaled down
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* `ScaleDownErrors`: number of containers that were unable to be stopped (equal to `ToScaleDown - ScaledDowm`)
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* `BackupFile`: object containing information about the backup file
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* `Name`: name of the backup file (e.g. `backup-2022-02-11T01-00-00.tar.gz`)
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* `FullPath`: full path of the backup file (e.g. `/archive/backup-2022-02-11T01-00-00.tar.gz`)
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