Add redis maxmemmory calculation and change the parameter in the redis.conf accordingly #308
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Madias2222 wants to merge 17 commits intoitential:devfrom
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Add redis maxmemmory calculation and change the parameter in the redis.conf accordingly #308Madias2222 wants to merge 17 commits intoitential:devfrom
Madias2222 wants to merge 17 commits intoitential:devfrom
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Madias2222
commented
Feb 26, 2026
Madias2222
commented
- Add redis maxmemmory calculation
- Add in redis.conf the maxmemmory accordingly with the base memory of the machine
Removed unnecessary 'become: true' directives from various tasks in the configure-mongodb-numa.yml file.
Madias2222
requested review from
kvelarde-itential and
steven-schattenberg-itential
kvelarde-itential
requested changes
Feb 27, 2026
…of the codebase. Also added a new variable for maxmemory in bytes to be used in the redis.conf template.
kvelarde-itential
requested changes
Mar 3, 2026
Comment on lines
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| - name: Calculate Redis maxmemory automatically | ||
| ansible.builtin.set_fact: | ||
| redis_maxmemory_bytes: >- | ||
| {{ | ||
| ( | ||
| [ | ||
| redis_maxmemory_min_mb | int, | ||
| ( | ||
| (ansible_facts.memtotal_mb | int) | ||
| * (redis_maxmemory_ratio | float) | ||
| ) | int | ||
| ] | max | ||
| ) * 1024 * 1024 | ||
| }} | ||
| when: redis_maxmemory_bytes == "auto" | ||
| tags: configure_redis | ||
|
|
Contributor
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We probably need to document the algorithm, either here or in the defaults file. And in the Redis guide.
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Author
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I documented in the configure-redis.yml take a look.
Contributor
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I'm thinking we should put this in the redis_guide.md instead. That is a lot for a code comment.
Look how I did it for the replica priority.
…re-redis.yml task.
kvelarde-itential
requested changes
Mar 5, 2026
docs/redis_guide.md
Outdated
| | `redis_tls_enabled` | Boolean | Flag to enable TLS connections. | `false` | | ||
| | `redis_maxmemory_bytes` | Integer | Maximum memory Redis can use (maxmemory). When set to auto, the installer calculates the value from the system RAM using: `maxmemory = max(redis_maxmemory_min_mb, system_ram × redis_maxmemory_ratio)`. If a numeric value is provided, that value (in bytes) is used directly and the automatic calculation is skipped. | `auto` | | ||
| | `redis_maxmemory_ratio` | Float | Define how much memory the system will use. Only work if `redis_maxmemory_bytes` is configured as auto. Default value 0.6 means 60%. | `0.60` | | ||
| | `redis_maxmemory_bytes` | Integer | This parameter defines the minimum amount of memory Redis is allowed to use, even if the automatic calculation would result in a smaller value. It acts as a safety floor for the maxmemory calculation. | `512` | |
Contributor
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I think this should be redis_maxmemory_min_mb
Comment on lines
+12
to
+28
| - name: Calculate Redis maxmemory automatically | ||
| ansible.builtin.set_fact: | ||
| redis_maxmemory_bytes: >- | ||
| {{ | ||
| ( | ||
| [ | ||
| redis_maxmemory_min_mb | int, | ||
| ( | ||
| (ansible_facts.memtotal_mb | int) | ||
| * (redis_maxmemory_ratio | float) | ||
| ) | int | ||
| ] | max | ||
| ) * 1024 * 1024 | ||
| }} | ||
| when: redis_maxmemory_bytes == "auto" | ||
| tags: configure_redis | ||
|
|
Contributor
There was a problem hiding this comment.
I'm thinking we should put this in the redis_guide.md instead. That is a lot for a code comment.
Look how I did it for the replica priority.
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