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rainbows(1) rainbows(1)
NAME
rainbows - rackup-like command to launch Rainbows!
SYNOPSIS
rainbows [-c CONFIG_FILE] [-E RACK_ENV] [-D] [RACKUP_FILE]
DESCRIPTION
A rackup(1)-like command to launch Rack applications using
Rainbows!. It is expected to be started in your application
root (APP_ROOT), but the "working_directory" directive may be
used in the CONFIG_FILE.
While Rainbows! takes a myriad of command-line options for
compatibility with ruby(1) and rackup(1), it is recommended to
stick to the few command-line options specified in the SYNOPSIS
and use the CONFIG_FILE as much as possible.
RACKUP FILE
This defaults to "config.ru" in APP_ROOT. It should be the
same file used by rackup(1) and other Rack launchers, it uses
the Rack::Builder DSL.
Embedded command-line options are mostly parsed for
compatibility with rackup(1) but strongly discouraged.
UNICORN OPTIONS
-c, --config-file CONFIG_FILE
Path to the Unicorn-specific config file. The config
file is implemented as a Ruby DSL, so Ruby code may
executed. See the RDoc/ri for the Unicorn::Configurator
class for the full list of directives available from the
DSL.
-D, --daemonize
Run daemonized in the background. The process is
detached from the controlling terminal and stdin is
redirected to "/dev/null". Unlike many common UNIX
daemons, we do not chdir to "/" upon daemonization to
allow more control over the startup/upgrade process.
Unless specified in the CONFIG_FILE, stderr and stdout
will also be redirected to "/dev/null".
-E, --env RACK_ENV
Run under the given RACK_ENV. See the RACK ENVIRONMENT
section for more details.
-l, --listen ADDRESS
Listens on a given ADDRESS. ADDRESS may be in the form
of HOST:PORT or PATH, HOST:PORT is taken to mean a TCP
socket and PATH is meant to be a path to a UNIX domain
socket. Defaults to "0.0.0.0:8080" (all addresses on
TCP port 8080) For production deployments, specifying
the "listen" directive in CONFIG_FILE is recommended as
it allows fine-tuning of socket options.
-N, --no-default-middleware
Disables loading middleware implied by RACK_ENV. This
bypasses the configuration documented in the RACK
ENVIRONMENT section, but still allows RACK_ENV to be
used for application/framework-specific purposes.
RACKUP COMPATIBILITY OPTIONS
-o, --host HOST
Listen on a TCP socket belonging to HOST, default is
"0.0.0.0" (all addresses). If specified multiple times
on the command-line, only the last-specified value takes
effect. This option only exists for compatibility with
the rackup(1) command, use of "-l"/"--listen" switch is
recommended instead.
-p, --port PORT
Listen on the specified TCP PORT, default is 8080. If
specified multiple times on the command-line, only the
last-specified value takes effect. This option only
exists for compatibility with the rackup(1) command, use
of "-l"/"--listen" switch is recommended instead.
-s, --server SERVER
No-op, this exists only for compatibility with
rackup(1).
RUBY OPTIONS
-e, --eval LINE
Evaluate a LINE of Ruby code. This evaluation happens
immediately as the command-line is being parsed.
-d, --debug
Turn on debug mode, the $DEBUG variable is set to true.
-w, --warn
Turn on verbose warnings, the $VERBOSE variable is set
to true.
-I, --include PATH
specify LOAD~P~ATH.PATHwillbeprependedtoLOAD_PATH. The
':' character may be used to delimit multiple
directories. This directive may be used more than once.
Modifications to $LOAD_PATH take place immediately and
in the order they were specified on the command-line.
-r, --require LIBRARY
require a specified LIBRARY before executing the
application. The "require" statement will be executed
immediately and in the order they were specified on the
command-line.
SIGNALS
The following UNIX signals may be sent to the master process:
• HUP - reload config file, app, and gracefully restart all
workers
• INT/TERM - quick shutdown, kills all workers immediately
• QUIT - graceful shutdown, waits for workers to finish their
current request before finishing.
• USR1 - reopen all logs owned by the master and all workers
See Unicorn::Util.reopen_logs for what is considered a log.
• USR2 - reexecute the running binary. A separate QUIT should
be sent to the original process once the child is verified to
be up and running.
• WINCH - gracefully stops workers but keep the master running.
This will only work for daemonized processes.
• TTIN - increment the number of worker processes by one
• TTOU - decrement the number of worker processes by one
See the SIGNALS (https://yhbt.net/rainbows/SIGNALS.html)
document for full description of all signals used by Rainbows!.
RACK ENVIRONMENT
Accepted values of RACK_ENV and the middleware they
automatically load (outside of RACKUP_FILE) are exactly as
those in rackup(1):
• development - loads Rack::CommonLogger, Rack::ShowExceptions,
and Rack::Lint middleware
• deployment - loads Rack::CommonLogger middleware
• none - loads no middleware at all, relying entirely on
RACKUP_FILE
All unrecognized values for RACK_ENV are assumed to be "none".
Production deployments are strongly encouraged to use
"deployment" or "none" for maximum performance.
Note the Rack::ContentLength and Rack::Chunked middlewares are
also loaded by "deployment" and "development", but no other
values of RACK_ENV. If needed, they must be individually
specified in the RACKUP_FILE, some frameworks do not require
them.
SEE ALSO
• unicorn(1)
• Rack::Builder ri/RDoc
• Unicorn::Configurator ri/RDoc
• Rainbows! RDoc (https://yhbt.net/rainbows/)
• Rack RDoc (http://rdoc.info/gems/r#/gems/rack/frames)
• Rackup HowTo (http://wiki.github.com/rack/rack/tutorial-
rackup-howto)
AUTHORS
Rainbows! Hackers <rainbows-public@yhbt.net>.
Rainbows! User Manual December 3, 2009 rainbows(1)
mail archives: https://yhbt.net/rainbows-public/
http://ou63pmih66umazou.onion/rainbows-public/
nntp://news.public-inbox.org/inbox.comp.lang.ruby.rainbows
nntp://ou63pmih66umazou.onion/inbox.comp.lang.ruby.rainbows
nntp://news.gmane.io/gmane.comp.lang.ruby.rainbows.general
public: rainbows-public@yhbt.net
source code: git clone https://yhbt.net/rainbows.git
torsocks git clone http://ou63pmih66umazou.onion/rainbows.git