[CentOS] Recommendation On Ping And Alert Tool

Todd Reed treed at astate.edu
Thu Sep 22 19:21:58 UTC 2005


I previously used Nagios and because of the painful configurations, I found
OpenNMS.  It does all I need and more, being more easier than Nagios.  It
uses PostgreSQL and runs on top of Tomcat4.

Here is how I installed OpenNMS and it's prereqs.  It's rough, but it works.

Installing Java and Tomcat
--------------

Download SDK and JRE to Local PC. Use SCP to copy them to the server in the
/downloads directory

mkdir /usr/local/java

cp /downloads/j2sdk-1_4_2_09-linux-i586.bin /usr/local/java

cp /downloads/j2re-1_4_2_09-linux-i586.bin /usr/local/java

cd /usr/local/java

chmod +x *

./j2sdk-1_4_2_09-linux-i586.bin

./j2re-1_4_2_09-linux-i586.bin

rm -rf *.bin

chown -R root:root j2sdk1.4.2_09

chown -R root:root j2re1.4.2_09

ln -s j2sdk1.4.2_09 j2sdk

ln -s j2re1.4.2_09 j2jre

nano -w /etc/profile

if ! echo ${PATH} | grep -q /usr/local/java/j2sdk/bin ; then
export PATH=/usr/local/java/j2sdk/bin:${PATH}
fi
if ! echo ${PATH} | grep -q /usr/local/java/j2re/bin ; then
export PATH=/usr/java/local/j2re/bin:${PATH}
fi
export JAVA_HOME=/usr/local/java/j2sdk
export
CLASSPATH=.:/usr/local/java/j2sdk/lib/tools.jar:/usr/local/java/j2re/lib/rt.
jar

exit

su -

java -version

java version "1.4.2_09"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_09-b05)
Java HotSpot(TM) Client VM (build 1.4.2_09-b05, mixed mode)


cd /downloads

groupadd -g 220 tomcat

useradd -u 220 -g tomcat -c "Tomcat" -r -d /usr/local/tomcat -s
"/sbin/nologin" tomcat

wget
http://mirrors.isc.org/pub/apache/jakarta/tomcat-4/v4.1.31/bin/jakarta-tomca
t-4.1.31.tar.gz

cp jakarta-tomcat-4.1.31.tar.gz /usr/local

cd /usr/local

tar -zxvf jakarta-tomcat-4.1.31.tar.gz

rm *.gz

chown -R tomcat:tomcat /usr/local/jakarta-tomcat-4.1.31

ln -s jakarta-tomcat-4.1.31 tomcat

nano -w /etc/sysconfig/iptables

Add port 8080 to ip tables

service iptables restart

nano -w /etc/profile

Add: CATALINA_HOME=/usr/local/tomcat

echo $CATALINA_HOME

nano -w /etc/rc.d/init.d/tomcat

ADD CONTENT:

#!/bin/sh
#
# Startup script for the Jakarta Tomcat Java Servlets and JSP server
#
# chkconfig: - 85 15
# description: Jakarta Tomcat Java Servlets and JSP server
# processname: tomcat
# pidfile: /var/run/tomcat.pid
# config:

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0# Set Tomcat environment.
export JAVA_HOME=/usr/local/java/j2sdk
export
CLASSPATH=.:/usr/local/java/j2sdk/lib/tools.jar:/usr/local/java/j2re/lib/rt.
jar
export CATALINA_HOME=/usr/local/tomcat
export CATALINA_OPTS="-Dbuild.compiler.emacs=true"
export PATH=/usr/local/java/j2sdk/bin:/usr/local/local/j2re/bin:$PATH

[ -f /usr/local/tomcat/bin/startup.sh ] || exit 0
[ -f /usr/local/tomcat/bin/shutdown.sh ] || exit 0

export PATH=$PATH:/usr/bin:/usr/local/bin

# See how we were called.
case "$1" in
start)
# Start daemon.
echo -n "Starting Tomcat: "
/usr/local/tomcat/bin/startup.sh
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch /var/lock/subsys/tomcat
;;
stop)
# Stop daemons.
echo -n "Shutting down Tomcat: "
/usr/local/tomcat/bin/shutdown.sh
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f /var/lock/subsys/tomcat
;;
restart)
$0 stop
$0 start
;;
condrestart)
[ -e /var/lock/subsys/tomcat ] && $0 restart
;;
status)
status tomcat
;;
*)
echo "Usage: $0 {start|stop|restart|status}"
exit 1
esac

exit 0


 

chown root:root /etc/rc.d/init.d/tomcat

chmod 755 /etc/rc.d/init.d/tomcat

chkconfig --add tomcat

chkconfig tomcat on

Go to: http://localhost:8080

Note: It will take about 15 seconds to pull up.

 

--------------

Installing RRDTool

yum install rrdtool

 
--------------

Configuring SNMP

yum -y install net-snmp-utils

cd /etc/snmp

mv snmpd.conf snmpd.conf.old

nano -w snmpd.conf

Add: rocommunity <password>

chkconfig snmpd on

service snmpd start

snmpwalk -v 1 -c <password> localhost system


--------------

Configuring Postgresql

service postgresql start

chkconfig postgresql on

nano -w /var/lib/pgsql/data/postgresql.conf

add/change: tcpip_socket = true

add/change: shared_buffers = 1024

nano -w /var/lib/pgsql/data/pg_hba.conf

change (remove comment): host all all 127.0.0.1 255.255.255.255 trust

change: local all all trust

service postgresql restart

--------------

Configuring OpenNMS

cd /downloads

wget
http://easynews.dl.sourceforge.net/sourceforge/opennms/opennms-1.2.4-1_cento
s4.i386.rpm

wget
http://easynews.dl.sourceforge.net/sourceforge/opennms/opennms-docs-1.2.4-1_
centos4.i386.rpm

wget
http://easynews.dl.sourceforge.net/sourceforge/opennms/opennms-webapp-1.2.4-
1_centos4.i386.rpm

rpm -i opennms-1.2.4-1_centos4.i386.rpm --nodeps

rpm -i opennms-docs-1.2.4-1_centos4.i386.rpm --nodeps

rpm -i opennms-webapp-1.2.4-1_centos4.i386.rpm --nodeps

cd /opt/OpenNMS/bin

./runjava -s

./install -disU

./install -y -w $CATALINA_HOME/webapps -W $CATALINA_HOME/server/lib

cd /opt/OpenNMS/etc

nano -w discovery-configuration.xml

Change the begin and end IP address to 127.0.0.1, or 

service tomcat restart

/opt/OpenNMS/bin/opennms.sh start

chkconfig opennms on

opennms -v status

Goto: http://localhost:8080/opennms/

login with admin:admin

Change password

 





>On Thu, 2005-09-22 at 12:54, Kennedy Clark wrote:
>  
>
>>A bit off topic, but I keep looking for an answer to this question and
>>coming up with nothing... so I thought I would go to the gurus. :-)
>> 
>>Can anyone recommend a good package for pinging other devices and
>>sending an email/alert when they go down?  I'm aware of all kinds of
>>more complex things with GUIs and a zillion other bells and whistles
>>we aren't looking for, but we just want a simple tool (could be daemon
>>or something run from cron) that runs every 1 - 5 minutes and alerts
>>us when stuff disappears.  Would need some basic logic like only
>>sending one email/alert when something goes down (vs sending an email
>>every 1-5 minutes until it comes back up). :-)  We need to avoid a
>>requirement for an X-windows GUI, but a web-GUI would probably be fine
>>(a GUI-less command-line thing would probably be best).
>>    
>>
>
>This probably isn't the best anymore, but I've had it running with
>no particular problems for 5 or 6 years - before any of the others
>like it were available.  It is all-perl, has one server process to
>collate the responses and rate-limit the alarms, one network probe
>for all the remotely checks, and optional local clients for some
>things that can only be tested locally. It is fairly easy to add
>custom tests for local applications.
>  http://spong.sourceforge.net/
>
>  
>


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