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garnser · #1 03-01-2010, 12:41 PM

Hi all,

I recently tried getting SNMP working with my Litespeed server but for some reason no data is presented when quering it with SNMP.

I followed this guide:
http://www.litespeedtech.com/support...cti_monitoring

Code:

# apt-get install php5-cli php5-common php5-snmp

Added the following to /etc/snmp/snmpd.conf (There's preexisting configuration for other MIBs which works)

Code:

pass .1.3.6.1.4.1.22253 /usr/bin/php /usr/local/lsws/add-ons/snmp_monitoring/sample.php

Running it locally returns:

Code:

# php -q ./sample.php -n .1.3.6.1.4.1.22253.101
.1.3.6.1.4.1.22253.101.1
string
LiteSpeed Web Server

The SNMP log only shows that a SNMP query has been requested but not output was provided.

Please advice.

mistwang · #2 03-01-2010, 12:45 PM

Maybe it is because snmp agent call an external application to serve the request.
You got the result from sample.php, right? it is working.

garnser · #3 03-01-2010, 12:52 PM

Quote:

Originally Posted by mistwang

Maybe it is because snmp agent call an external application to serve the request.
You got the result from sample.php, right? it is working.

Wouldn't the log return some kinds of errors if that was the case?

mistwang · #4 03-01-2010, 01:18 PM

I think it is just the way it works.
You should ask net-snmp developers about this, it is not something develop by LiteSpeed.

garnser · #5 03-01-2010, 02:33 PM

Quering the script with extend rather than pass gave this output:
SNMPv2-SMI::enterprises.22253.1.0 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.2.12.47.117.115.114.47. 98.105.110.47.112.104.112 = STRING: "/usr/local/lsws/add-ons/snmp_monitoring/sample.php"
SNMPv2-SMI::enterprises.22253.2.1.3.12.47.117.115.114.47. 98.105.110.47.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.2.1.4.12.47.117.115.114.47. 98.105.110.47.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.2.1.5.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 5
SNMPv2-SMI::enterprises.22253.2.1.6.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.7.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.20.12.47.117.115.114.47 .98.105.110.47.112.104.112 = INTEGER: 4
SNMPv2-SMI::enterprises.22253.2.1.21.12.47.117.115.114.47 .98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.3.1.1.12.47.117.115.114.47. 98.105.110.47.112.104.112 = STRING: "/usr/local/lsws/add-ons/snmp_monitoring/sample.php: Permission denied"
SNMPv2-SMI::enterprises.22253.3.1.2.12.47.117.115.114.47. 98.105.110.47.112.104.112 = STRING: "/usr/local/lsws/add-ons/snmp_monitoring/sample.php: Permission denied"
SNMPv2-SMI::enterprises.22253.3.1.3.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.3.1.4.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.4.1.2.12.47.117.115.114.47. 98.105.110.47.112.104.112.1 = STRING: "/usr/local/lsws/add-ons/snmp_monitoring/sample.php: Permission denied"

Gives you a bit more to work on.

mistwang · #6 03-01-2010, 02:37 PM

chmod a+x /usr/local/lsws/add-ons/snmp_monitoring/sample.php

add
#!/usr/local/bin/php

at the beginning of sample.php if it is not there.

garnser · #7 03-01-2010, 02:41 PM

Ok getting a bit closer however I'm still not getting the full output:

root@mon:~# snmpwalk -c public -v 1 10.254.11.101 .1.3.6.1.4.1.22253
SNMPv2-SMI::enterprises.22253.1.0 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.2.12.47.117.115.114.47. 98.105.110.47.112.104.112 = STRING: "/var/lib/snmp/snmp_monitoring/sample.php"
SNMPv2-SMI::enterprises.22253.2.1.3.12.47.117.115.114.47. 98.105.110.47.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.2.1.4.12.47.117.115.114.47. 98.105.110.47.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.2.1.5.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 5
SNMPv2-SMI::enterprises.22253.2.1.6.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.7.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.20.12.47.117.115.114.47 .98.105.110.47.112.104.112 = INTEGER: 4
SNMPv2-SMI::enterprises.22253.2.1.21.12.47.117.115.114.47 .98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.3.1.1.12.47.117.115.114.47. 98.105.110.47.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.3.1.2.12.47.117.115.114.47. 98.105.110.47.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.3.1.3.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.3.1.4.12.47.117.115.114.47. 98.105.110.47.112.104.112 = INTEGER: 0
SNMPv2-SMI::enterprises.22253.4.1.2.12.47.117.115.114.47. 98.105.110.47.112.104.112.1 = ""

mistwang · #8 03-01-2010, 02:54 PM

Maybe you need to use

#!/usr/local/bin/php -q

to silence PHP header output.

garnser · #9 03-01-2010, 03:01 PM

Hm, did seam to help, however as the file is executeble I configured snmpd to query the script directly instead extend .1.3.6.1.4.1.22253 /var/lib/snmp/snmp_monitoring/sample.php

Which gives me this:
root@mon:~# snmpwalk -c public -v 1 10.254.11.101 .1.3.6.1.4.1.22253
SNMPv2-SMI::enterprises.22253.1.0 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.2.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = STRING: "
"
SNMPv2-SMI::enterprises.22253.2.1.3.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.2.1.4.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = ""
SNMPv2-SMI::enterprises.22253.2.1.5.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = INTEGER: 5
SNMPv2-SMI::enterprises.22253.2.1.6.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.7.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.2.1.20.40.47.118.97.114.47. 108.105.98.47.115.110.109.112.47.115.110.109.112.9 5.109.111.110.105.116.111.114.105.110.103.47.115.9 7.109.112.108.101.46.112.104.112 = INTEGER: 4
SNMPv2-SMI::enterprises.22253.2.1.21.40.47.118.97.114.47. 108.105.98.47.115.110.109.112.47.115.110.109.112.9 5.109.111.110.105.116.111.114.105.110.103.47.115.9 7.109.112.108.101.46.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.3.1.1.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = STRING: "No such file or directory"
SNMPv2-SMI::enterprises.22253.3.1.2.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = STRING: "No such file or directory"
SNMPv2-SMI::enterprises.22253.3.1.3.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.3.1.4.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112 = INTEGER: 1
SNMPv2-SMI::enterprises.22253.4.1.2.40.47.118.97.114.47.1 08.105.98.47.115.110.109.112.47.115.110.109.112.95 .109.111.110.105.116.111.114.105.110.103.47.115.97 .109.112.108.101.46.112.104.112.1 = STRING: "No such file or directory"

Any idea what file that could be missing?

mistwang · #10 03-02-2010, 11:29 AM

Maybe you should use

Quote:

pass .1.3.6.1.4.1.22253 /usr/bin/php -q /litespeed_snmp_scripts/sample.php

remove "#!/usr/bin/php -q" from sample.php