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update(readme) to solve the limitations #9

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67 changes: 42 additions & 25 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -97,41 +97,58 @@ default thresholds. Where as for alarms created for
replica then an alarm will also be created for the replica lag. For every t2
instance, alarms are also created for remaining CPU credits.

Variables File `us-east-1.json`:
```json
{
"rds_alarms_common_action_list": [
"arn:aws:sns:us-east-1:9783248248:ALARMS"
],
"rds_alarms_period": 60,
"rds_alarms_evaluation_periods": 2,
"rds_alarms_region": "us-east-1",
"rds_alarms_warning_threshold": 70,
"rds_alarms_critical_threshold": 90,
"rds_alarms_warning_cpu_credits_threshold": 60,
"rds_alarms_critical_cpu_credits_threshold": 30,
"rds_alarms_db_instances": {
"my-rds-instance-identifier": {
"warning_db_connections_threshold": 100,
"critical_db_connections_threshold": 200,
"alarm_action_list": [
"arn:aws:sns:us-east-1:9783248248:MYALARM"
]
},
"my-replica-rds-instance-identifier": {
"warning_threshold": 80,
"warning_db_connections_threshold": 100,
"critical_db_connections_threshold": 200,
"alarm_action_list": [
"arn:aws:sns:us-east-1:9783248248:MYALARM"
],
"credit_warning_threshold": 20,
"credit_critical_threshold": 10,
"replica_lag_threshold": 1800
}
}
}
```

Ansible Playbook `rds-alarms.yaml`:
```yaml
- hosts: localhost
connection: local
vars:
rds_alarms_common_action_list:
- "arn:aws:sns:us-east-1:9783248248:ALARMS"
rds_alarms_period: 60
rds_alarms_evaluation_periods: 2
rds_alarms_region: us-east-1
rds_alarms_warning_threshold: 70
rds_alarms_critical_threshold: 90
rds_alarms_warning_cpu_credits_threshold: 60
rds_alarms_critical_cpu_credits_threshold: 30
rds_alarms_db_instances:
my-rds-instance-identifier: # this will use the defaults
warning_db_connections_threshold: 100
critical_db_connections_threshold: 200
alarm_action_list: ["arn:aws:sns:us-east-1:9783248248:MYALARM"]
my-replica-rds-instance-identifier:
warning_threshold: 80
warning_db_connections_threshold: 100
critical_db_connections_threshold: 200
alarm_action_list: ["arn:aws:sns:us-east-1:9783248248:MYALARM"]
credit_warning_threshold: 20
credit_critical_threshold: 10
replica_lag_threshold: 1800
roles:
- rds-alarms

```

To create alarms, run the following command,

## Limitations
```
ansible-playbook --extra-vars "@us-east-1.json" rds-alarms.yaml
```

You need to create multiple playbooks for different regions.
You can create separate json files for separate regions/configs/groups and use them with the above playbook

## License

Expand Down