Pmux::Gateway

Pmux gateway is an executor for Pmux (https://github.com/iij/pmux) through HTTP request.

Requirements

* ruby 1.8.7, 1.9.1 or higher
* pmux 
* gflocator 
* eventmachine 
* em_pessimistic
* eventmacnine/evma_httpserver https://github.com/eventmachine/evma_httpserver.git 

Installation

Install dependency programs

gem install gflocator  
gem install pmux  
gem install eventmachine  
gem install em_pessimistic  
git clone https://github.com/eventmachine/evma_httpserver.git  
cd evma_httpserver  
rake gem:build  
gem install eventmachine_httpserver-0.2.1.gem  
(I do not recommend "gem install eventmachine_httpserver")  

Install pmux-gw

gem install pmux-gw  

Usage

pmux-gw [-c config] [-F] [-h]  
-c : specified config file  
-F : foreground mode  
-h : print usage  

Quick start

Install glusterfs client (http://www.gluster.org/)

CentOS/RHEL

rpm -ivh glusterfs-3.3.1-1.el6.x86_64.rpm  
rpm -ivh glusterfs-fuse-3.3.1-1.el6.x86_64.rpm  

Create an environment that can use pmux

mkdir /mnt/volume  
mount -t glusterfs gfsnode1:volume /mnt/volume  
gflocator  
useradd -m admin  
sudo -u admin ssh-keygen  
(copy publickey to glusterfs nodes)  

Make sure that the following command will work

sudo -u admin pmux --status -h 127.0.0.1  
sudo -u admin pmux --mapper="ls -al" --storage=glusterfs --locator-host=127.0.0.1  /mnt/volume  

Create an environment that can use pmux-gw

mkdir /etc/pmux-gw  
cp <pmux-geteway-install-path>/conf/pmux-gw.conf /etc/pmux-gw/pmux-gw.conf  
cp <pmux-geteway-install-path>/conf/password /etc/pmux-gw/password  
chown -R admin:admin /etc/pmux-gw/password  
chmod -R 600 /etc/pmux-gw/password  
pmux-gw  
curl --basic -u user:pass -iv  'http://127.0.0.1:18080/pmux?mapper=ls&file=/'  

Resource URL

http://&lt;server_name&gt;:18080/pmux

Resource to execute the Pmux

method

* GET
* POST

parameters

* mapper
* Specified as a string to exected mapper command.
* Must be placed on the glusterfs mapper program
* Be distributed to each glusterfs nodes using ship-file is possible mapper program on glusterfs
* file  
* Specifies the file to be processed
* This parameter can be specified multiple
* Can also be used with file-glob
* The default program is not distributed reducer
* Specifies the path on the volume that was mounted
* file-glob
* Specified in the expression pattern of the shell files to be processed
* Specification of the pattern, according to the specifications of the pattern glob (3)
* This parameter can be specified multiple
* Can also be used with file-glob
* The default program is not distributed reducer
* Specifies the path on the volume that was mounted
* ship-file
* Specifies the path of the file to be distributed to each node of the pmux
* You use this if you want to distribute to each node in the mapper program on the glusterfs pmux
* Can be distributed more files than mapper script (configuration files, for example)
* This parameter can be specified multiple
* Specifies the path on the volume that was mounted
* reducer
* specified as a string to be executed reducer command
* Reducer is not used the program default
* num-r
* Reducer to run the program number.
* Default 0 is used
* ff
* Number of tasks if you want to be lumped fine fusion task
* I do not fusion when omitted
* storage
* Specify the type of storage you want to use
* Default is "glusterfs"
* locator-host
* Specifies the hostname or address of the locator to return the position of the entity in the file
* default is "127.0.0.1"
* locator-port
* Specifies the port number of the locator that returns the position of the entity in the file
* Default is automatically set according to the type of storage
* detect-error 
* Specifies the on / off
* if on, Return a response waiting for the completion of the execution of pmux, it checks whether an error occurred. 
* The default is off

http://&lt;server_name&gt;:18080/history

Resources of the request to refer to the history

http://&lt;server_name&gt;:18080/existence

Resources to monitor the presence of process

Package createting

* create gem
$ make

* install
# make install
or 
# gem install pkg//pmux-gw-*.gem

* create rpm
$ make rpmbuild

* install rpm
$ rpm -ivh rpm/RPMS/noarch/rubygems-pmux-gw-*.noarch.rpm