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The Membase Server Superdupervisor.
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README.markdown

The NorthScale Server

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

[ns server]

Building

Build dependencies include...

  • erlang (5.7.4, also needed at runtime)
  • ruby (1.8.6)
  • ruby gems
    • sprockets (install with gem install sprockets)

Building...

git clone git@github.com:northscale/ns_server.git
cd ns_server
git submodule init
git submodule update
make

Starting

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

  • Below, is where you checked out and built ns_server above.
  • Make sure the needed ports are not being used (these include 8080, 11211, 11212, etc).
  • Build the "for_release" branch of northscale memcached that has isasl enabled (git clone git@github.com:northscale/memcached.git && cd memcached && git checkout --track origin/for_release && ./config/autorun.sh && ./configure --enable-isasl && make && make test).
  • Build the bucket_engine library from the git@github.com:northscale/bucket_engine.git repository. (git clone git@github.com:northscale/bucket_engine.git && cd bucket_engine && ./configure --with-memcached=/path/to/your/above/dir/for/memcached/ && make && make test)
  • Create a sym link from the for_release northscale memcached that you just built to /priv/memcached
  • Create a sym link from the for_release northscale memcached memcached/.libs/default_engine.so to /priv/engines/default_engine.so
  • If your sym links are correct, you should be able to cd /priv and run: ./memcached -E ./engines/default_engine.so -vvv
  • If you're not doing sym links, instead make sure that the memcached/.libs/default_engine.so and bucket_engine/.libs/bucket_engine.so created when building the for_release northscale memcached and bucket_engine are on your LD_LIBRARY_PATH (in OS X this is the DYLD_LIBRARY_PATH). Or...
  • Just a general note, if you are making changes to the priv/config file and these changes don't appear to be reflected in the start up procedures, try deleting the /config dir.

The ns_server can be started through the start.sh script found in the main directory.

./start.sh

It starts under sasl, which will give you more detailed logging on both progress and failures of the application and the heirarcy.

Interactive Execution

If you'd like to just start a shell, then interact with the running application, use:

./start-shell.sh.

To start with a different node name, and pass parameters (such as a different config file), use:

./start_shell.sh -name $NODE_NAME -ns_server ns_server_config "$CONFIG_FILE"

For example:

./start_shell.sh -name ns_2 -ns_server ns_server_config "priv/config2"

Tip: if you see error message like...

=ERROR REPORT==== 18-Jan-2010::10:45:00 ===
application_controller: bad term: priv/config2

Then you will have to add backslashes around the path double-quotes -- like \"priv/config\"

Development

Pulling the latest dependencies

git submodule update

Updating the dependencies (deps subdirectory)

cd deps/emoxi git pull origin master cd ../menelaus git pull origin master cd ../.. git add deps/emoxi deps/menelaus make clean make git commit -m "updated emoxi & menelaus" git push


Copyright (c) 2010, NorthScale, Inc.

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