| // Copyright 2015 Cloudera, Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| [[quickstart]] |
| = Kudu Quickstart |
| |
| :author: Kudu Team |
| :imagesdir: ./images |
| :icons: font |
| :toc: left |
| :toclevels: 3 |
| :doctype: book |
| :backend: html5 |
| :sectlinks: |
| :experimental: |
| |
| This quickstart guides you through getting, installing, and starting a three- |
| node Kudu cluster in CDH using Cloudera Manager, putting some data into it, and |
| reading some data from it, without going into details. For more in-depth information, see |
| link:installation.html[Kudu Installation]. |
| |
| [[quickstart_vm]] |
| == Kudu Quickstart VM |
| You can get started even quicker! Check out the Quickstart VM at |
| https://github.com/cloudera/kudu-examples/ and start using Kudu in minutes. |
| |
| == Prerequisites |
| * A Cloudera Manager cluster with the <<how_many_hosts,right number of hosts>>. |
| * Write access to the `/opt/cloudera/csd` directory on the Cloudera Manager server. |
| |
| [[how_many_hosts]] |
| == How Many Masters? |
| - Currently Kudu only supports a single master. |
| //// |
| Uncomment once we officially support multi-master. |
| - For production use, three masters are recommended. With three masters, |
| Kudu can survive a single master going offline or becoming unavailable. |
| //// |
| |
| // == How Many Hosts? |
| // .How many masters? |
| |
| == How Many Tablet Servers? |
| - A minimum of three tablet servers is recommended in order to support a tablet |
| replication factor of three. If a single tablet server fails, the tablet |
| replicas on the remaining tablet servers can continue to service read and |
| write requests. |
| - Each additional tablet server will improve performance and throughput. |
| |
| One host can run both master and tablet server processes. |
| |
| == Install Kudu Using Parcels |
| |
| include::installation.adoc[tags=quickstart_parcels] |
| |
| [[qs_access_web_ui]] |
| == Access the Web UIs |
| |
| In addition to the Kudu service in Cloudera Manager, each of the masters and tablet |
| servers exposes a Web UI. By default, the web UI binds to port `8051` for masters, |
| and `8050` for tablet servers, on interface |
| `0.0.0.0`. |
| |
| From any host's Web UI, you can access the Web UIs for each other master and |
| tablet server, as well as logs, memory reports, and a JSON dump of metrics. |
| Explore the Web UIs to get an idea of what you might find. |
| |
| == Load Some Data |
| |
| TBD |
| |
| == Retrieve Some Data |
| |
| TBD |
| |
| == Test Fault Tolerance |
| |
| If you are using a replication factor of at least three, and at least three |
| tablet servers, you can stop any tablet server and the Kudu cluster will remain |
| available for all operations. See <<how_many_hosts>>. If too many tablet servers |
| disappear and a quorum cannot be achieved on any tablet, writes to that tablet |
| will fail. |
| |
| To stop a process running in the foreground, interrupt it with Ctrl-C. |
| Otherwise, kill the process using operating system utilities. Monitor the log |
| files and the Web UIs to see what happens when a failure is detected, and what |
| happens when a new master or tablet server joins the cluster. |
| |
| == Next Steps |
| - link:quickstart.html[Get Started With Kudu] |
| - link:installation.html[Kudu Installation Guide] |
