**NOTE**: When configuring multiple OpenID based authentication providers on a MinIO cluster, any number of Role Policy based providers may be configured, and at most one JWT Claim based provider may be configured.

<details><summary>Example 1: Two role policy providers</summary>

Sample environment variables:

```

| `minio_s3_requests_inflight_total`            | Total number of S3 requests currently in flight.         |
| `minio_s3_requests_rejected_auth_total`       | Total number S3 requests rejected for auth failure.      |
| `minio_s3_requests_rejected_header_total`     | Total number S3 requests rejected for invalid header.    |

| `minio_api_requests_rejected_auth_total`       | `counter` | Total number of requests rejected for auth failure      | `type,pool_index,server`         |
| `minio_api_requests_rejected_header_total`     | `counter` | Total number of requests rejected for invalid header    | `type,pool_index,server`         |
| `minio_api_requests_rejected_timestamp_total`  | `counter` | Total number of requests rejected for invalid timestamp | `type,pool_index,server`         |

- Each pool expects a minimum of 2 nodes per pool, and unique non-repeating hosts for each argument.
- Each pool expects each host in this pool has the same number of drives specified as any other host.
- Mixing `local-path` and `distributed-path` is not allowed, doing so would cause MinIO to refuse starting the server.

queue_dir            (path)               staging dir for undelivered messages e.g. '/home/events'
queue_limit          (number)             maximum limit for undelivered messages, defaults to '100000'
max_open_connections (number)             maximum number of open connections to the database, defaults to '2'
comment              (sentence)           optionally add a comment to this setting
```

- **MinIO creates erasure-coding sets of _2_ to _16_ drives per set.  The number of drives you provide in total must be a multiple of one of those numbers.**
- **MinIO chooses the largest EC set size which divides into the total number of drives or total number of nodes given - making sure to keep the uniform distribution i.e each node participates equal number of drives per set**.

This algorithm is specifically optimized for machine generated content.
Write throughput is typically at least 500MB/s per CPU core,
and scales with the number of available CPU cores.
Decompression speed is typically at least 1GB/s.

This means that in cases where raw IO is below these numbers
compression will not only reduce disk usage but also help increase system throughput.
Typically, enabling compression on spinning disk systems

| Maximum number of servers per cluster                           | no-limit      |
| Minimum number of servers                                       | 02            |
| Minimum number of drives per server when server count is 1      | 02            |
| Minimum number of drives per server when server count is 2 or 3 | 01            |
| Minimum number of drives per server when server count is 4      | 01            |

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version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the