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Add functionality to add old buckets to etcd on startup

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Buckets already present on a Minio server before it joins a
bucket federated deployment will now be added to etcd during
startup. In case of a bucket name collision, admin is informed
via Minio server console message.

Added configuration migration for configuration stored in etcd
backend.

Also, environment variables are updated and ListBucket path style
request is no longer forwarded.
This commit is contained in:
Nitish
2018-04-05 20:48:42 +05:30
committed by kannappanr
parent 853ea371ce
commit 6df1e4a529
11 changed files with 188 additions and 83 deletions
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6
docs/federation/lookup/README.md
View File

@@ -21,21 +21,21 @@ Bucket lookup federation requires two dependencies
```
export MINIO_ETCD_ENDPOINTS="http://remote-etcd1:2379,http://remote-etcd2:4001"
export MINIO_DOMAIN=domain.com
export MINIO_DOMAIN_IP=44.35.2.1
export MINIO_PUBLIC_IP=44.35.2.1
minio server http://rack{1...4}.host{1...4}.domain.com/mnt/export{1...32}
```
> cluster2
```
export MINIO_ETCD_ENDPOINTS="http://remote-etcd1:2379,http://remote-etcd2:4001"
export MINIO_DOMAIN=domain.com
export MINIO_DOMAIN_IP=44.35.2.2
export MINIO_PUBLIC_IP=44.35.2.2
minio server http://rack{5...8}.host{5...8}.domain.com/mnt/export{1...32}
```
In this configuration you can see `MINIO_ETCD_ENDPOINTS` points to the etcd backend which manages Minio's
`config.json` and bucket SRV records. `MINIO_DOMAIN` indicates the domain suffix for the bucket which
will be used to resolve bucket from DNS. For example if you have a bucket such as `mybucket`, the
client can use now `mybucket.domain.com` to directly resolve to the right cluster. `MINIO_DOMAIN_IP`
client can use now `mybucket.domain.com` to directly resolve to the right cluster. `MINIO_PUBLIC_IP`
points to the public IP address where each cluster might be accessible, this is unique per each cluster.
NOTE: `mybucket` only exists on one cluster either `cluster1` or `cluster2` this is truly random and