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📝 (RDSDiskSpaceLimit.md): update runbook RDSDiskSpaceLimit #28

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Jul 4, 2024
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📝 (RDSDiskSpaceLimit.md): update runbook RDSDiskSpaceLimit #28

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📝 (RDSDiskSpaceLimit.md): update runbook RDSDiskSpaceLimit
dlapina Apr 3, 2024
87b60bb
update: remove terraform link
dlapina Apr 3, 2024
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17 changes: 14 additions & 3 deletions content/runbooks/rds/RDSDiskSpaceLimit.md
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Original file line number Diff line number Diff line change
Expand Up @@ -73,7 +73,14 @@ You must avoid reaching no disk space left situation.
{{% aws-rds-storage-increase-limitations %}}
{{< /hint >}}

1. Determine the minimum storage for the increase
1. Set AWS_PROFILE

```bash
export AWS_PROFILE=<AWS account>
```

2. Determine the minimum storage for the increase
💡 RDS requires a minimal storage increase of 10%

```bash
INSTANCE_IDENTIFIER=<replace with the RDS instance identifier>
Expand All @@ -84,16 +91,20 @@ You must avoid reaching no disk space left situation.
| jq -r '{"Current IOPS": .DBInstances[0].Iops, "Current Storage Limit": .DBInstances[0].AllocatedStorage, "New minimum storage size": ((.DBInstances[0].AllocatedStorage|tonumber)+(.DBInstances[0].AllocatedStorage|tonumber*0.1|floor))}'
```

1. Increase storage:
3. Increase storage:

```bash
NEW_ALLOCATED_STORAGE=<replace with new allocated storage in GB>
```

```bash
aws rds modify-db-instance --db-instance-identifier ${RDS_INSTANCE} --allocated-storage ${INSTANCE_IDENTIFIER} --apply-immediately \
aws rds modify-db-instance --db-instance-identifier ${INSTANCE_IDENTIFIER} --allocated-storage ${NEW_ALLOCATED_STORAGE} --apply-immediately \
| jq .DBInstance.PendingModifiedValues
```

❗ If the RDS instance has replicas instances (replica or reporting), you must repeat the operation for all replicas to keep the same configuration between instances

4. Backport changes in Terraform

## Additional resources

Expand Down