Cacti : Add Monitoring Host2015/06/16

	Add Monitoring Target Host on the network.
[1]	Install SNMP on the target host you'd like to monitor.

[root@node01 ~]#

yum -y install net-snmp net-snmp-utils

[root@node01 ~]#

vi /etc/snmp/snmpd.conf

# line 41: comment out

com2sec notConfigUser default public

# line 74,75: uncomment and change

# change "mynetwork" to your own network

# change comunity name to anyone except public, private (for security reason)

com2sec local localhost

Serverworld

com2sec mynetwork

10.0.0.0/24 Serverworld

# line 78,79: uncomment and change

group MyRWGroup

v2c

local
group MyROGroup

v2c

mynetwork

# line 85: uncomment

view all    included  .1                               80

# line 93,94: uncomment and change

access MyROGroup ""

v2c

noauth

exact

all none none
access MyRWGroup ""

v2c

noauth

exact

all all all

# line 323: uncomment

disk / 10000

[root@node01 ~]#

systemctl start snmpd

[root@node01 ~]#

systemctl enable snmpd

# validation (replace "Serverworld" to the comunity name you set)

[root@node01 ~]#

snmpwalk -v2c -c Serverworld localhost system

SNMPv2-MIB::sysDescr.0 = STRING: Linux node01.srv.world 3.10.0-229.4.2.el7.x86_64 #1 SMP Wed May 13.....
SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (3367) 0:00:33.67
SNMPv2-MIB::sysContact.0 = STRING: Root <root@localhost> (configure /etc/snmp/snmp.local.conf)
...
...
SNMPv2-MIB::sysORUpTime.9 = Timeticks: (4) 0:00:00.04
SNMPv2-MIB::sysORUpTime.10 = Timeticks: (4) 0:00:00.04

[2]	Login to Cacti admin site and click "Devices" on the left menu.

[3]	Click "Add" in the right pane.

[4]	Input items like follows and click "Create" button. Description ⇒ simply description Hostname ⇒ target's hostname or IP address Host Template ⇒ ucd/net SNMP Host SNMP Comunity ⇒ the comunity name you set in [1]

[5]	After saving settings, click "Graph Trees" on the left menu and click "Default Tree" in the right pane.

[6]	Click "Add" in the right pane.

[7]	Select "Host" in "Tree Item Type" field and select target Host in "Host" field and then click "Create" button.

[8]	Click "Save" button.

[9]	Click "New Graphs" on the left menu and select graphs you'd like to add in the right pane and then click "Create" button.

[10]	After few minutes later, move to the "graphs" tab to view the system status to select the new target host on the left menu like follows.

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