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docs: Fix command sample to be copy-pastable (#3345)

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Aditya Manthramurthy 2016-11-25 01:08:19 +05:30 committed by Harshavardhana
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docs/distributed/README.md
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@ -14,17 +14,17 @@ Distributed Minio provides protection against multiple node/drive failures and [
A stand-alone Minio server would go down if the server hosting the disks goes offline. In contrast, a distributed Minio setup with _n_ disks will have your data safe as long as _n/2_ or more disks are online. You'll need a minimum of _(n/2 + 1)_ [Quorum](https://github.com/minio/dsync#lock-process) disks to create new objects though. A stand-alone Minio server would go down if the server hosting the disks goes offline. In contrast, a distributed Minio setup with _n_ disks will have your data safe as long as _n/2_ or more disks are online. You'll need a minimum of _(n/2 + 1)_ [Quorum](https://github.com/minio/dsync#lock-process) disks to create new objects though.
For example, a 8 nodes distributed Minio setup, with 1 disk per node would stay put, even if upto 4 nodes are offline. But, you'll need atleast 5 nodes online to create new objects. For example, an 8-node distributed Minio setup, with 1 disk per node would stay put, even if upto 4 nodes are offline. But, you'll need atleast 5 nodes online to create new objects.
## Limitations ## Limitations
As with Minio in standalone mode, distributed Minio has the per tenant limit of minimum 4 and maximum 16 drives (imposed by erasure code). This helps maintain simplicity and yet remain scalable. If you need a multiple tenant setup, you can easily spin multiple Minio instances managed by orchestration tools like Kubernetes. As with Minio in stand-alone mode, distributed Minio has a per tenant limit of minimum 4 and maximum 16 drives (imposed by erasure code). This helps maintain simplicity and yet remain scalable. If you need a multiple tenant setup, you can easily spin multiple Minio instances managed by orchestration tools like Kubernetes.
Note that with distributed Minio you can play around with the number of nodes and drives as long as the limits are adhered to. For example you can have 2 nodes with 4 drives each, 4 nodes with 4 drives each, 8 nodes with 2 drives each, and so on. Note that with distributed Minio you can play around with the number of nodes and drives as long as the limits are adhered to. For example, you can have 2 nodes with 4 drives each, 4 nodes with 4 drives each, 8 nodes with 2 drives each, and so on.
# Get started # Get started
If you're aware of stand-alone Minio set up, the process remains largely the same, as the Minio server automatically switches to standalone or distributed mode, depending on the command line parameters. If you're aware of stand-alone Minio set up, the process remains largely the same, as the Minio server automatically switches to stand-alone or distributed mode, depending on the command line parameters.
## 1. Prerequisites ## 1. Prerequisites
@ -40,33 +40,30 @@ Below examples will clarify further:
Example 1: Start distributed Minio instance with 1 drive each on 8 nodes, by running this command on all the 8 nodes. Example 1: Start distributed Minio instance with 1 drive each on 8 nodes, by running this command on all the 8 nodes.
``` ```shell
$ export MINIO_ACCESS_KEY=<ACCESS_KEY> $ export MINIO_ACCESS_KEY=<ACCESS_KEY>
$ export MINIO_SECRET_KEY=<SECRET_KEY> $ export MINIO_SECRET_KEY=<SECRET_KEY>
$ minio server http://192.168.1.11/export1 http://192.168.1.12/export2 $ minio server http://192.168.1.11/export1 http://192.168.1.12/export2 \
http://192.168.1.13/export3 http://192.168.1.14/export4 http://192.168.1.15/export5 http://192.168.1.16/export6 http://192.168.1.13/export3 http://192.168.1.14/export4 \
http://192.168.1.17/export7 http://192.168.1.18/export8 http://192.168.1.15/export5 http://192.168.1.16/export6 \
http://192.168.1.17/export7 http://192.168.1.18/export8
``` ```
![Distributed Minio, 8 nodes with 1 disk each](https://raw.githubusercontent.com/minio/minio/master/docs/screenshots/Architecture-diagram_distributed_8.png) ![Distributed Minio, 8 nodes with 1 disk each](https://raw.githubusercontent.com/minio/minio/master/docs/screenshots/Architecture-diagram_distributed_8.png)
Example 2: Start distributed Minio instance with 4 drives each on 4 nodes, by running this command on all the 4 nodes. Example 2: Start distributed Minio instance with 4 drives each on 4 nodes, by running this command on all the 4 nodes.
``` ```shell
$ export MINIO_ACCESS_KEY=<ACCESS_KEY> $ export MINIO_ACCESS_KEY=<ACCESS_KEY>
$ export MINIO_SECRET_KEY=<SECRET_KEY> $ export MINIO_SECRET_KEY=<SECRET_KEY>
$ minio server http://192.168.1.11/export1 http://192.168.1.11/export2 $ minio server http://192.168.1.11/export1 http://192.168.1.11/export2 \
http://192.168.1.11/export3 http://192.168.1.11/export4 http://192.168.1.11/export3 http://192.168.1.11/export4 \
http://192.168.1.12/export1 http://192.168.1.12/export2 http://192.168.1.12/export1 http://192.168.1.12/export2 \
http://192.168.1.12/export3 http://192.168.1.12/export4 http://192.168.1.12/export3 http://192.168.1.12/export4 \
http://192.168.1.13/export1 http://192.168.1.13/export2 http://192.168.1.13/export1 http://192.168.1.13/export2 \
http://192.168.1.13/export3 http://192.168.1.13/export4 http://192.168.1.13/export3 http://192.168.1.13/export4 \
http://192.168.1.14/export1 http://192.168.1.14/export2 http://192.168.1.14/export1 http://192.168.1.14/export2 \
http://192.168.1.14/export3 http://192.168.1.14/export4 http://192.168.1.14/export3 http://192.168.1.14/export4
``` ```
![Distributed Minio, 4 nodes with 4 disks each](https://raw.githubusercontent.com/minio/minio/master/docs/screenshots/Architecture-diagram_distributed_16.png) ![Distributed Minio, 4 nodes with 4 disks each](https://raw.githubusercontent.com/minio/minio/master/docs/screenshots/Architecture-diagram_distributed_16.png)