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The Membase Server Superdupervisor.

README.markdown

The Membase Server

This application represents the top of the hierarchy of all memcached smart services. It is an application in the Erlang OTP sense.

TODO: this picture needs updating

[ns server]

Building

Build dependencies include...

  • erlang R14 (make sure to have functional crypto)

Building...

You should use top level make file and repo manifest as explained here: https://github.com/membase/manifest/blob/master/README.markdown

Runtime dependencies

Before you start the server, you may need to do the following

  • Make sure the needed ports are not being used (these include 8091, 11211, 11212, etc).

Running

After building everything via top level makefile you'll have membase-server script in your $REPO/install/bin (or other prefix if you specified so). You can run this script for normal single node startup.

During development it's convenient to have several 'nodes' on your machine. There's ./cluster_run script in root directory for achiving that. Feel free to ask --help. You normally need something like -n2 where 2 is number of nodes you want.

It'll start REST API on ports 9000...9000+n. memcached on ports 12000+2*i and moxi ports on 12001+2*i ports.

Note that blank nodes are not configured and need to be setup. I suggest trying web UI first to get the feeling of what's possible. Just visit REST API port(s) via browser. For development mode clusters it's port 9000 and higher. For production mode it's port 8091.

Other alternative is setting up and clustering nodes via REST API. membase-cli allows that. And you can easily write your own script(s).

There's ./cluster_connect script that eases cluster configuration for development clusters. Ask --help.

Sometimes during debugging/development you want smaller number of vbuckets. You can change vbuckets number by setting MEMBASE_NUM_VBUCKET environment variable to desired number of vbuckets before creating new membase bucket.

Other tools

Membase ships with a bunch of nice tools. Feel free to check $REPO/install/bin (or $PREFIX/bin). One of notable tools is mbstats. It allows you to query buckets for all kinds of internal stats.

Another notable tool is membase-cli. Script is called just membase.


Copyright (c) 2011, Couchbase, Inc.

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