{{parent page="Monitoring"}}

===Cacti===
Ref: http://www.cacti.net/downloads/docs/html/graph_howto.html#NEW_DEVICE
Ref: $CACTI_HOME/docs/txt/manual.txt

==Install==
1) Download cacti, extract to a location where your web server can serve
1) Create the cacti database, import the cacti.sql file
1) Create the database user and grant access to the cacti database
1) Create a cacti shell user, chown cacti:cacti $CACTI_HOME/log $CACTI_HOME/rra
1) Schedule $CACTI_HOME/poller.php to run every 5min
1) Run the cacti installer by going to http://server/cacti/install/
1) Default password is admin/admin

==snmp==
Most of it is pretty straight forward. For those who are unfamiliar with snmp, here's what you need to add to /etc/snmp/snmpd.conf

%%
# sample configuration for SNMP V3

# create an SNMP V3 user with an authpassphrase and a privacy passphrase
## username authProto authpassphrase privProto privpassphrase
## -------- --------- -------------- --------- --------------
createUser someuser MD5 myauthpass DES myprivpass


# Second, map the security name into a group name:
## groupName securityModel securityName
## --------- ------------- ------------
group groupv3 usm someuser

# Third, create a view for us to let the group have rights to:
## incl/excl subtree mask
## --------- ------- ----
view all included .iso 80

# Fourth, create the access for that group without context
## context sec.model sec.level prefix read write notif
## ------- --------- --------- ------ ---- ----- -----
access groupv3 "" any auth exact all all all
%%

Then test it with
%%
shell>snmpwalk -v 3 -a MD5 -A myauthpass -x DES -X myprivpass -u someuser -l authpriv localhost interface
%%

==sensors==
Ref: http://www.rene.bz/2009/04/16/graphing-your-servers-motherboard-temperature-and-fan-rpm-speeds
%%(bash;sensors.sh)
#!/bin/bash

sensors | grep Core | awk '{print $1$2$3}' | tr '\n\+\°' ' ' | sed s/\ C\ //g | sed s/\:\ /\:/g
%%