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.

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
make

Runtime dependencies

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

• Below, <REPO_ROOT> 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).

UNIX

For 1.0/Reveal memcached...

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

For membase, instead use git://github.com/trondn/memcached.git engine branch...

git clone git://github.com/trondn/memcached.git git checkout --track origin/engine

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

Next, create symlinks...

• Create a sym link from the for_release northscale memcached that you just built to <REPO_ROOT>/priv/memcached
• Create a sym link from the memcached/.libs/default_engine.so to <REPO_ROOT>/priv/engines/default_engine.so
• Create a sym link from the bucket_engine/.libs/bucket_engine.so to <REPO_ROOT>/priv/engines/bucket_engine.so

For membase, also symlink...

<REPO_ROOT>/priv/engines/stdin_term_handler.so to memcached/.libs/stdin_term_handler.so

Also, for membase, build the ep engine and symlink it the .libs/ep.so the priv/engines...

git clone git@github.com:northscale/ep-engine.git && cd ep-engine && ./configure --with-memcached=/path/to/your/above/dir/for/memcached/ && make && make test

If your sym links are correct, you should be able to cd to <REPO_ROOT>/priv and run (just to test):

./memcached -p 11211 -d -P /tmp/memcached.pid -E engines/bucket_engine.so -e "admin=_admin;engine=engines/default_engine.so;default_bucket_name=default

To kill your test memcached:

kill cat /tmp/memcached.pid

Windows:

To make life easy, use the appropriate binary from the Northscale website. Copy the installed memcached.exe and default_engine.so into the ./priv and ./priv/engines directories.

If your copying was correct, you should be able to cd <REPO_ROOT>/priv and run (just to test):

./memcached -p 11211 -E engines/default_engine.so

To kill memcached:

taskkill //F //PID tasklist.exe |grep memcached|awk '/^(\w+)\W+(\w+)/ {print $2}'

Other

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 <REPO_ROOT>/config dir.

Running

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"

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Copyright (c) 2010, NorthScale, Inc.