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1
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On each target server:
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2
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3
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1. install the nrpe "service" package:
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4
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5
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sudo apt-get install nagios-nrpe-server // (I know, the server in the name is unfortunate)
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6
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7
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2. copy nrpe_local.cfg to /etc/nagios/nrpe_local.cfg
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8
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9
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(for convenience, the text of nrpe_local.cfg (if cut and paste is easier than scp) :
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10
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11
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##########################################################
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12
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#
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13
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# nrpe_local.cfg
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14
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#
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15
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# this companion cfg file to nrpe.cfg that contains all of
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16
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# the customized settings for dataone
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17
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#
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18
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##########################################################
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19
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20
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21
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## the ip address of monitor.dataone.org
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22
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##########################################
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23
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allowed_hosts=129.24.0.12
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24
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25
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26
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## the following are typical commands to be mapped
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27
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########################################################
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28
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command[check_disk]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10%
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29
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command[check_users]=/usr/lib/nagios/plugins/check_users -w 20 -c 50
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30
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command[check_load]=/usr/lib/nagios/plugins/check_load -w 5,4,3 -c 10,6,4
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31
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command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
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32
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command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 250 -c 400
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33
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34
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<<FILE
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35
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36
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37
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3. restart the nrpe daemon with:
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38
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39
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sudo /etc/init.d/nagios-nrpe-server restart
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40
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41
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4. open up the firewall for port 5666:
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42
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43
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sudo ufw allow from 129.24.0.12 to tcp port 5666
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44
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45
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5. from the central monitoring server, test communication with:
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46
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47
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check_nrpe -H <target server IP> -c check_users
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48
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GOOD:
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49
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USERS OK - 1 users currently logged in...
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50
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BAD:
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51
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CHECK_NRPE: Socket timeout after 10 seconds.
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52
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(see http://www.debianclusters.org/index.php/Nagios_NRPE_Addon_Installation_and_Configuration
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53
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for more troubleshooting errors (toward bottom of page)
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54
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