checking for SSL headers... configure: error: Cannot find ssl headers

checking for SSL headers... configure: error: Cannot find ssl headers

If you get the following error while installing nrpe.

Solution:

Install libssl-dev

sudo apt-get install libssl-dev

After install things work well.


*** Generating DH Parameters for SSL/TLS ***
Generating DH parameters, 512 bit long safe prime, generator 2
This is going to take a long time
checking for Kerberos include files... could not find include files
checking for perl... /usr/bin/perl
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/Makefile
config.status: creating subst
config.status: creating include/config.h

*** Configuration summary for nrpe 2.12 03-10-2008 ***:

General Options:
-------------------------
NRPE port: 5666
NRPE user: nagios
NRPE group: nagios
Nagios user: nagios
Nagios group: nagios

Review the options above for accuracy. If they look okay,
type 'make all' to compile the NRPE daemon and client.

 

Subversion Error - svn: Could not use external editor to fetch log messages

When I was installing Subversion on CentOS 5.3 x86_64 and when I tried to do a "svn commit". The error was

"svn: Could not use external editor to fetch log message; consider putting the $SVN_EDITOR environment variable or using the --message......."
"svn: None of the environment variables SVN_EDITOR, VISUAL or EDITOR is set..............." 

To solve the issue
You have to input the environment variables in your .bash_profile in your home directory
# vim .bash_profile
--------------------------------------
export SVN_EDITOR=/usr/bin/vim
--------------------------------------
# source .bash_profile

Monitor JAVA through Jconsole remotely

Here we are going to monitor Java process running on linux server from the windows machine with Jconsole.

On linux in catalina.sh file add following line and restart tomcat.

export CATALINA_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=8999 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Djava.rmi.server.hostname=192.168.10.23"

Here 192.168.10.23 is the IP of the linux machine.

 

Now in Jconsole in Remote Process: 192.168.10.23:8999 This will allow you to connect to 8999 port on linux.