Weblog

F. A. Q.

Created by Robert Taylor, last modified by Gustaf Neumann 17 Oct 2017, at 08:40 AM

• What is OpenACS? See en:docs-end-user
• What features does OpenACS have? See en:docs-eng
• How to get admin-level help en:docs-admin-help
• How to get help with OpenACS en:community-culture
• How do I format X in XoWiki? See the documentation: http://alice.wu-wien.ac.at:8000/xowiki-doc/
• How to create a patch to submit via bugtracker? //bugtracker/openacs/patch-submission-instructions

Previous version of FAQ (with many more Q and A):  /faq 

A cookbook of procedures is available at: OpenACS Cookbook 

XoWiki: How to save files directly in the wiki

Created by Gustaf Neumann, last modified by Benjamin Brink 30 Jun 2017, at 07:08 AM

In order to save files directly in the wiki, just add a link with the content file:yourfile to a page (as for other links, between curly double brackets).

[[file:oacs-dotlrn-vienna-xowiki.pdf|XoWiki Slides from the Vienna OpenACS conference]]

When the file link is added, and the file does not exist, the wiki marks the link with a handle to upload the file. According to the current policies, everybody who is logged-in has sufficient permissions is allowed to edit pages.. 

Here is an example of a file-link, pointing to the xowiki slides from the the Vienna oacs-dotlrn conference XoWiki Slides from the Vienna OpenACS conference

OpenACS Performance Tuning

Created by OpenACS community, last modified by Benjamin Brink 30 Jun 2017, at 06:56 AM

OpenACS Performance Tuning

Here is some documentation on general OpenACS performance tuning:

• Boost_your_application_performance_to_serve_large_files
• Diagnosing Performance Problems

Much performance tuning is targeted at the subsystems level, and so you will find some specific tuning information in these pages:

• en:aolserver-admin
• en:postgresql-admin

A broad scope of causes can be attributed to OpenACS performance issues. These forum threads help identify useful diagnostic techniques and accurate testing to help narrow the scope of problem areas etc.

• AOLserver and OpenACS Benchmarks (Why is my OpenACS so slow?)
• Server Performance Benchmarks with Apache Benchmark and Traffic Jamme
• How would one handle 12,000 db backed requests per second?
• Network performance monitoring tools
• Help Needed in Setting up .LRN to Scale
• Why is [my] OpenACS becoming so slow?
• Performance Problems - what is the bottleneck?
• Postgres connections [maxed out] and OpenACS
• Performance boost for older installations

Securing your system

Created by Benjamin Brink, last modified by Benjamin Brink 29 Jun 2017, at 11:33 AM

It's imperative that you secure your installation. As Jon Griffin repeatedly warns us, "No distribution is secure out of the box."

A Reference Platform implements some basic precautions, but security is a process, not a condition. If you are responsible for a computer hooked to the internet, you are responsible for learning some rudiments of security, such as monitoring the state of a computer, maintaining patch levels, and keeping backups.

We recommend these resources:

• Securing and Optimizing Linux - version 3  (Free PDF Guide)

• Jon Griffin's notes on RedHat security (from archive.org 22 June 2006)

• Linux Administrators Security Guide 

• Strategies for Keeping a Secure Server

• Bruce Schneier's Crypto-Gram, especially The security patch treadmill and Monitoring First.

Content Security Policies (CSP)

OpenACS supports CSP starting with version 5.9.1.