Using Redux to serve images on myamiweb¶

Installation¶

1. Follow Web_Server_Installation but ignore warning on not using php 5.3
2. Install myami-redux branch of myami on the webserver machine.
   • Install redux prerequisites as found in its README file
   • Redux needs write permission at its installation location to write fftw wisdom file.
   • Install python filesystem abstraction for redux caching like this:
     

     sudo easy_install fs
     

Configurations:¶

configure redux¶

> cd /YourMyamDownload/redux
> cp redux.cfg.template redux.cfg

* You can also copy it to /etc/myami/redux.cfg if you prefer.

• Turn on redux caching if desired,
  

  [cache]
  enable: yes
  path: /var/cache/myami/redux
  disksize:  500
  memsize: 500
  

  
  You need to make sure the cache path exists and writable by the user that starts the redux server (reduxd)
  • Input the desired disk_cache_path, disk_cache_size, and mem_cache_size in the next few lines
  • Create the disk_cache_path before running redux if cache will be used

Assign redux server in myamiweb¶

• At myamiweb/config.php
  

  define('SERVER_HOST',"localhost")
  

Test Installation¶

1. Using Redux to do simple input output (simple client with no reduxd server needed):

   redux --filename=test.jpg --oformat=PNG > test.png

   Make sure the resulting test.png is in fact an image and not an error message.
2. Run the server: run the following on a command line:

   reduxd

   leave it running for the following...
3. Test command line client connecting to the server

   redux --server_host=localhost --filename=test.jpg --oformat=PNG > test.png

   Note: The input file name is from the perspective of the reduxd server, so be sure to give it an absolute path (unlike the first test, which was not accessing the server)

Using redux server with myamiweb¶

1. start reduxd server if not already running from the above test:

   reduxd

2. click on "[test dataset]" on your main myamiweb home page, or go directly to the URL: myamiweb/viewerxml.php
3. test by accessing your own images from Leginon in myamiweb/imageviewer.php

starting reduxd at boot¶

sudo cp -v myami/redux/init.d/reduxd /etc/init.d/
sudo service reduxd start