mirror of https://github.com/minio/minio.git
97 lines
5.3 KiB
Markdown
97 lines
5.3 KiB
Markdown
# Federation Quickstart Guide [](https://slack.minio.io)
|
||
This document explains how to configure Minio with `Bucket lookup from DNS` style federation.
|
||
|
||
## Get started
|
||
|
||
### 1. Prerequisites
|
||
Install Minio - [Minio Quickstart Guide](https://docs.minio.io/docs/minio-quickstart-guide).
|
||
|
||
### 2. Run Minio in federated mode
|
||
Bucket lookup from DNS federation requires two dependencies
|
||
|
||
- etcd (for config, bucket SRV records)
|
||
- CoreDNS (for DNS management based on populated bucket SRV records, optional)
|
||
|
||
## Architecture
|
||
|
||
|
||
|
||
### 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.
|
||
|
||
#### MINIO_DOMAIN
|
||
|
||
This is the top level domain name used for the federated setup. This domain name should ideally resolve to a load-balancer
|
||
running in front of all the federated Minio instances. The domain name is used to create sub domain entries to etcd. For
|
||
example, if the domain is set to `domain.com`, the buckets `bucket1`, `bucket2` will be accessible as `bucket1.domain.com`
|
||
and `bucket2.domain.com`.
|
||
|
||
#### MINIO_PUBLIC_IPS
|
||
|
||
This is comma separated list of IP addresses to which buckets created on this Minio instance will resolve to. For example,
|
||
a bucket `bucket1` created on current Minio instance will be accessible as `bucket1.domain.com`, and the DNS entry for
|
||
`bucket1.domain.com` will point to IP address set in `MINIO_PUBLIC_IPS`.
|
||
|
||
*Note*
|
||
|
||
- This field is mandatory for standalone and erasure code Minio server deployments, to enable federated mode.
|
||
- This field is optional for distributed deployments. If you don't set this field in a federated setup, we use the IP addresses of
|
||
hosts passed to the Minio server startup and use them for DNS entries.
|
||
|
||
### Run Multiple Clusters
|
||
|
||
> cluster1
|
||
|
||
```sh
|
||
export MINIO_ETCD_ENDPOINTS="http://remote-etcd1:2379,http://remote-etcd2:4001"
|
||
export MINIO_DOMAIN=domain.com
|
||
export MINIO_PUBLIC_IPS=44.35.2.1,44.35.2.2,44.35.2.3,44.35.2.4
|
||
minio server http://rack{1...4}.host{1...4}.domain.com/mnt/export{1...32}
|
||
```
|
||
|
||
> cluster2
|
||
|
||
```sh
|
||
export MINIO_ETCD_ENDPOINTS="http://remote-etcd1:2379,http://remote-etcd2:4001"
|
||
export MINIO_DOMAIN=domain.com
|
||
export MINIO_PUBLIC_IPS=44.35.1.1,44.35.1.2,44.35.1.3,44.35.1.4
|
||
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 DNS SRV records. `MINIO_DOMAIN` indicates the domain suffix for the bucket which
|
||
will be used to resolve bucket through DNS. For example if you have a bucket such as `mybucket`, the
|
||
client can use now `mybucket.domain.com` to directly resolve itself to the right cluster. `MINIO_PUBLIC_IPS`
|
||
points to the public IP address where each cluster might be accessible, this is unique for each cluster.
|
||
|
||
NOTE: `mybucket` only exists on one cluster either `cluster1` or `cluster2` this is random and
|
||
is decided by how `domain.com` gets resolved, if there is a round-robin DNS on `domain.com` then
|
||
it is randomized which cluster might provision the bucket.
|
||
|
||
### 3. Upgrading to `etcdv3` API
|
||
|
||
Users running Minio federation from release `RELEASE.2018-06-09T03-43-35Z` to `RELEASE.2018-07-10T01-42-11Z`, should migrate the existing bucket data on etcd server to `etcdv3` API, and update CoreDNS version to `1.2.0` before updating their Minio server to the latest version.
|
||
|
||
Here is some background on why this is needed - Minio server release `RELEASE.2018-06-09T03-43-35Z` to `RELEASE.2018-07-10T01-42-11Z` used etcdv2 API to store bucket data to etcd server. This was due to `etcdv3` support not available for CoreDNS server. So, even if Minio used `etcdv3` API to store bucket data, CoreDNS wouldn't be able to read and serve it as DNS records.
|
||
|
||
Now that CoreDNS [supports etcdv3](https://coredns.io/2018/07/11/coredns-1.2.0-release/), Minio server uses `etcdv3` API to store bucket data to etcd server. As `etcdv2` and `etcdv3` APIs are not compatible, data stored using `etcdv2` API is not visible to the `etcdv3` API. So, bucket data stored by previous Minio version will not be visible to current Minio version, until a migration is done.
|
||
|
||
CoreOS team has documented the steps required to migrate existing data from `etcdv2` to `etcdv3` in [this blog post](https://coreos.com/blog/migrating-applications-etcd-v3.html). Please refer the post and migrate etcd data to `etcdv3` API.
|
||
|
||
### 4. Test your setup
|
||
|
||
To test this setup, access the Minio server via browser or [`mc`](https://docs.minio.io/docs/minio-client-quickstart-guide). You’ll see the uploaded files are accessible from the all the Minio endpoints.
|
||
|
||
# Explore Further
|
||
|
||
- [Use `mc` with Minio Server](https://docs.minio.io/docs/minio-client-quickstart-guide)
|
||
- [Use `aws-cli` with Minio Server](https://docs.minio.io/docs/aws-cli-with-minio)
|
||
- [Use `s3cmd` with Minio Server](https://docs.minio.io/docs/s3cmd-with-minio)
|
||
- [Use `minio-go` SDK with Minio Server](https://docs.minio.io/docs/golang-client-quickstart-guide)
|
||
- [The Minio documentation website](https://docs.minio.io)
|