```
KEY:
etcd  federate multiple clusters for IAM and Bucket DNS

ARGS:
endpoints*       (csv)       comma separated list of etcd endpoints e.g. "http://localhost:2379"
path_prefix      (path)      namespace prefix to isolate tenants e.g. "customer1/"
coredns_path     (path)      shared bucket DNS records, default is "/skydns"

 *   -n, --name name               : Name for the crawling session
 *   -w, --webConfigIds ids        : Comma-separated web config IDs
 *   -f, --fileConfigIds ids       : Comma-separated file config IDs
 *   -d, --dataConfigIds ids       : Comma-separated data config IDs
 *   -p, --properties path         : Properties file path
 *   -e, --expires days            : Expires for documents (in days)

## Architecture

![bucket-lookup](https://github.com/minio/minio/blob/master/docs/federation/lookup/bucket-lookup.png?raw=true)

### Environment variables

#### MINIO_ETCD_ENDPOINTS

This is comma separated list of etcd servers that you want to use as the MinIO federation back-end. This should
be same across the federated deployment, i.e. all the MinIO instances within a federated deployment should use same
etcd back-end.

claim_name    (string)    JWT canned policy claim name, defaults to "policy"
claim_prefix  (string)    JWT claim namespace prefix e.g. "customer1/"
scopes        (csv)       Comma separated list of OpenID scopes for server, defaults to advertised scopes from discovery document e.g. "email,admin"
comment       (sentence)  optionally add a comment to this setting
```

and ENV based options

```

        // Test toString with special characters
        String name = "special[]param";
        String[] values = { "[value]", ",comma,", "quote\"test" };
        RequestParameter param = new RequestParameter(name, values);

        String expected = "[special[]param, [[value], ,comma,, quote\"test]]";
        assertEquals(expected, param.toString());
    }

    public void test_immutability() {

    public static final String MAVEN_BUILD_TIMESTAMP_FORMAT = "maven.build.timestamp.format";

    /**
     * User controlled relocations.
     * This property is a comma separated list of entries with the syntax <code>GAV&gt;GAV</code>.
     * The first <code>GAV</code> can contain <code>*</code> for any elem (so <code>*:*:*</code> would mean ALL, something

claim_name    (string)    JWT canned policy claim name, defaults to "policy"
claim_prefix  (string)    JWT claim namespace prefix e.g. "customer1/"
scopes        (csv)       Comma separated list of OpenID scopes for server, defaults to advertised scopes from discovery document e.g. "email,admin"
comment       (sentence)  optionally add a comment to this setting
```

and ENV based options

```

Assuming that you already have Apache Kafka configured and running.

```
mc admin config set myminio/ audit_kafka
KEY:
audit_kafka[:name]  send audit logs to kafka endpoints

ARGS:
brokers*         (csv)       comma separated list of Kafka broker addresses
topic            (string)    Kafka topic used for bucket notifications
sasl_username    (string)    username for SASL/PLAIN or SASL/SCRAM authentication

MINIO_IDENTITY_OPENID_CLAIM_NAME            (string)    JWT canned policy claim name (default: 'policy')
MINIO_IDENTITY_OPENID_SCOPES                (csv)       Comma separated list of OpenID scopes for server, defaults to advertised scopes from discovery document e.g. "email,admin"

### 3. Setup MinIO with etcd

MinIO server expects environment variable for etcd as `MINIO_ETCD_ENDPOINTS`, this environment variable takes many comma separated entries.

```
export MINIO_ETCD_ENDPOINTS=http://localhost:2379
minio server /data
```