RApache install in Ubuntu 10.04 LTS

1. Install R (not detailed here)

2. Update R - I updated R from inside with update.packages() (! or similar)

3. RApache install

• we need the prefork only for apreq2 libraries,  so even if you have Apache working do this.


apt-get install r-base-dev apache2-mpm-prefork apache2-prefork-dev
wget http://biostat.mc.vanderbilt.edu/rapache/files/rapache-latest.tar.gz
rapachedir=`tar tzf rapache-latest.tar.gz | head -1`
tar xzvf rapache-latest.tar.gz
cd $rapachedir
./configure
make
make install

4. Create a file for R config

nano /etc/apache2/mods-available/r.conf

ROutputErrors
SetHandler r-info
# hangs if the modules are not available
#REvalOnStartup "library(DBI); library(RMySQL)"
#RSourceOnStartup "/var/www/r/startup.R"
SetHandler r-script RHandler sys.source


5. Create a module for apache

nano r.load

with the following content

LoadModule R_module /usr/lib/apache2/modules/mod_R.so

6. Add module to Apache

a2nmod r

7. Reload Apache

/etc/init.d/apache2 reload

8. Check your installation at

http://localhost/RApacheInfo

9. Test it

http://localhost/r/startup.R?a=1&b=2

startup.R file content


get = str(GET)
d = LETTERS[1:4]
print(get)
print (d)


Should print

List of 2
$ a: chr "1"
$ b: chr "2"
NULL
[1] "A" "B" "C" "D"