# DATABASE REDIS DataDog monitors

## How to use this module

```
module "datadog-monitors-database-redis" {
  source = "git::ssh://git@bitbucket.org/morea/terraform.feature.datadog.git//database/redis?ref={revision}"

  environment = "${var.environment}"
  message     = "${module.datadog-message-alerting.alerting-message}"
}

```

## Purpose

Creates DataDog monitors with the following checks:

- Redis evicted keys
- Redis expired keys
- Redis blocked clients
- Redis keyspace seems full (no changes since ${var.keyspace_timeframe})
- Redis memory used
- Redis memory fragmented
- Redis rejected connections
- Redis latency
- Redis hitrate
- Redis does not respond

## Inputs

| Name | Description | Type | Default | Required |
|------|-------------|:----:|:-----:|:-----:|
| blocked_clients_extra_tags | Extra tags for Redis Blocked clients monitor | string | `` | no |
| blocked_clients_message | Custom message for Redis Blocked clients monitor | string | `` | no |
| blocked_clients_silenced | Groups to mute for Redis Blocked clients monitor | map | `<map>` | no |
| blocked_clients_threshold_critical | Blocked clients rate (critical threshold) | string | `30` | no |
| blocked_clients_threshold_warning | Blocked clients rate (warning threshold) | string | `10` | no |
| blocked_clients_time_aggregator | Monitor aggregator for Redis Blocked clients [available values: min, max or avg] | string | `min` | no |
| blocked_clients_timeframe | Monitor timeframe for Redis Blocked clients [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| environment | Architecture environment | string | - | yes |
| evaluation_delay | Delay in seconds for the metric evaluation | string | `15` | no |
| evictedkeys_change_extra_tags | Extra tags for Redis evicted keys monitor | string | `` | no |
| evictedkeys_change_message | Custom message for Redis evicted keys monitor | string | `` | no |
| evictedkeys_change_silenced | Groups to mute for Redis evicted keys monitor | map | `<map>` | no |
| evictedkeys_change_threshold_critical | Evicted keys change (critical threshold) | string | `100` | no |
| evictedkeys_change_threshold_warning | Evicted keys change (warning threshold) | string | `20` | no |
| evictedkeys_change_time_aggregator | Monitor aggregator for Redis evicted keys [available values: min, max or avg] | string | `avg` | no |
| evictedkeys_change_timeframe | Monitor timeframe for Redis evicted keys [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| expirations_rate_extra_tags | Extra tags for Redis keys expirations monitor | string | `` | no |
| expirations_rate_message | Custom message for Redis keys expirations monitor | string | `` | no |
| expirations_rate_threshold_critical | Expirations percent (critical threshold) | string | `80` | no |
| expirations_rate_threshold_warning | Expirations percent (warning threshold) | string | `60` | no |
| expirations_rate_time_aggregator | Monitor aggregator for Redis keys expirations [available values: min, max or avg] | string | `min` | no |
| expirations_rate_timeframe | Monitor timeframe for Redis keys expirations [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| expirations_silenced | Groups to mute for Redis keys expirations monitor | map | `<map>` | no |
| filter_tags_custom | Tags used for custom filtering when filter_tags_use_defaults is false | string | `*` | no |
| filter_tags_use_defaults | Use default filter tags convention | string | `true` | no |
| hitrate_extra_tags | Extra tags for Redis hitrate monitor | string | `` | no |
| hitrate_message | Custom message for Redis hitrate monitor | string | `` | no |
| hitrate_silenced | Groups to mute for Redis hitrate monitor | map | `<map>` | no |
| hitrate_threshold_critical | hitrate limit (critical threshold) | string | `10` | no |
| hitrate_threshold_warning | hitrate limit (warning threshold) | string | `30` | no |
| hitrate_time_aggregator | Monitor aggregator for Redis hitrate [available values: min, max or avg] | string | `max` | no |
| hitrate_timeframe | Monitor timeframe for Redis hitrate [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| keyspace_extra_tags | Extra tags for Redis keyspace monitor | string | `` | no |
| keyspace_message | Custom message for Redis keyspace monitor | string | `` | no |
| keyspace_silenced | Groups to mute for Redis keyspace monitor | map | `<map>` | no |
| keyspace_threshold_critical | Keyspace no changement (critical threshold) | string | `0` | no |
| keyspace_threshold_warning | Keyspace no changement (warning threshold) | string | `1` | no |
| keyspace_time_aggregator | Monitor aggregator for Redis keyspace [available values: min, max or avg] | string | `min` | no |
| keyspace_timeframe | Monitor timeframe for Redis keyspace [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| latency_extra_tags | Extra tags for Redis latency monitor | string | `` | no |
| latency_message | Custom message for Redis latency monitor | string | `` | no |
| latency_silenced | Groups to mute for Redis latency monitor | map | `<map>` | no |
| latency_threshold_critical | latency limit (critical threshold) | string | `100` | no |
| latency_threshold_warning | latency limit (warning threshold) | string | `50` | no |
| latency_time_aggregator | Monitor aggregator for Redis latency [available values: min, max or avg] | string | `min` | no |
| latency_timeframe | Monitor timeframe for Redis latency [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| mem_frag_extra_tags | Extra tags for Redis memory RAM fragmentation monitor | string | `` | no |
| mem_frag_message | Custom message for Redis memory RAM fragmentation monitor | string | `` | no |
| mem_frag_silenced | Groups to mute for Redis memory RAM fragmentation monitor | map | `<map>` | no |
| mem_frag_threshold_critical | memory RAM fragmentation limit (critical threshold) | string | `150` | no |
| mem_frag_threshold_warning | memory RAM fragmentation limit (warning threshold) | string | `130` | no |
| mem_frag_time_aggregator | Monitor aggregator for Redis memory RAM fragmentation [available values: min, max or avg] | string | `min` | no |
| mem_frag_timeframe | Monitor timeframe for Redis memory RAM fragmentation [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| mem_used_extra_tags | Extra tags for Redis RAM memory used monitor | string | `` | no |
| mem_used_message | Custom message for Redis RAM memory used monitor | string | `` | no |
| mem_used_silenced | Groups to mute for Redis RAM memory used monitor | map | `<map>` | no |
| mem_used_threshold_critical | RAM memory used limit (critical threshold) | string | `95` | no |
| mem_used_threshold_warning | RAM memory used limit (warning threshold) | string | `85` | no |
| mem_used_time_aggregator | Monitor aggregator for Redis RAM memory used [available values: min, max or avg] | string | `min` | no |
| mem_used_timeframe | Monitor timeframe for Redis RAM memory used [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |
| message | Message sent when a Redis monitor is triggered | string | - | yes |
| new_host_delay | Delay in seconds for the metric evaluation | string | `300` | no |
| not_responding_extra_tags | Extra tags for Redis does not respond monitor | string | `` | no |
| not_responding_message | Custom message for Redis does not respond monitor | string | `` | no |
| not_responding_silenced | Groups to mute for Redis does not respond monitor | map | `<map>` | no |
| redis_silenced | Groups to mute for Redis monitors | map | `<map>` | no |
| rejected_con_extra_tags | Extra tags for Redis rejected connections errors monitor | string | `` | no |
| rejected_con_message | Custom message for Redis rejected connections errors monitor | string | `` | no |
| rejected_con_silenced | Groups to mute for Redis rejected connections errors monitor | map | `<map>` | no |
| rejected_con_threshold_critical | rejected connections errors limit (critical threshold) | string | `50` | no |
| rejected_con_threshold_warning | rejected connections errors limit (warning threshold) | string | `10` | no |
| rejected_con_time_aggregator | Monitor aggregator for Redis rejected connections errors [available values: min, max or avg] | string | `min` | no |
| rejected_con_timeframe | Monitor timeframe for Redis rejected connections errors [available values: `last_#m` (1, 5, 10, 15, or 30), `last_#h` (1, 2, or 4), or `last_1d`] | string | `last_5m` | no |

## Outputs

| Name | Description |
|------|-------------|
| blocked_clients_id | id for monitor blocked_clients |
| evicted_keys_id | id for monitor evicted_keys |
| expirations_id | id for monitor expirations |
| hitrate_id | id for monitor hitrate |
| keyspace_full_id | id for monitor keyspace_full |
| latency_id | id for monitor latency |
| memory_frag_id | id for monitor memory_frag |
| memory_used_id | id for monitor memory_used |
| not_responding_id | id for monitor not_responding |
| rejected_connections_id | id for monitor rejected_connections |

## Related documentation

[Datadog blog: How to monitor Redis](https://www.datadoghq.com/blog/how-to-monitor-redis-performance-metrics/)

[Datadog Redis integration doc](https://docs.datadoghq.com/integrations/redisdb/)