feat(helm): add snapshot functionality with automatic cleanup #5892
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- Add snapshot configuration section to values.yaml with: - Enable/disable toggle - Cron schedule configuration - Format selection (dragonfly/rdb) - Cleaner settings (image, interval, max count, resources) - Add snapshot-cleaner sidecar container to pod template: - Automatically removes old snapshots based on max_count - Supports both dragonfly (.dfs) and rdb formats - Configurable cleanup interval and resource limits - Add snapshot cron arguments to main dragonfly container - Maintains backward compatibility with existing configurations
renan
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Abhra303
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Nov 18, 2025
| - -c | ||
| - | | ||
| while true; do | ||
| {{- if eq .Values.snapshot.format "dragonfly" }} |
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should be "df" instead of "dragonfly" as you are keeping only two formats "df" and "rdb" from the comment below.
| while true; do | ||
| {{- if eq .Values.snapshot.format "dragonfly" }} | ||
| # Keep only the last {{ .Values.snapshot.cleaner.max_count }} snapshots (composed of two files each) | ||
| ls -1t /data/dump-*.dfs | tail -n +{{ add 1 (mul .Values.snapshot.cleaner.max_count 2) }} | xargs rm -f |
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have you tested provisioning this container locally? Just want to be sure this script works.
| - "--snapshot_cron" | ||
| - "{{ .Values.snapshot.schedule }}" | ||
| {{- if eq .Values.snapshot.format "rdb" }} | ||
| - "--nodf_snapshot_format" |
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@romange do we have this flag? I think --df_snapshot_format=false is the correct flag to have rdb format?
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it's equivalent, though I am surprised that people know this notion as it is a special format for boolean flags in google flags library :) @renan how did you know? :)
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Add snapshot configuration section to values.yaml with:
Add snapshot-cleaner sidecar container to pod template:
Add snapshot cron arguments to main dragonfly container
Maintains backward compatibility with existing configurations
Fixes #2824