2006-02-26 20:46:11 +00:00
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Asterisk SNMP Support
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---------------------
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Rudimentary support for SNMP access to Asterisk is available. To build
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this, one needs to have Net-SNMP development headers and libraries on
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the build system, including any libraries Net-SNMP depends on.
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Note that on some (many?) Linux-distributions the dependency list in
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2008-03-26 17:24:54 +00:00
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the net-snmp-devel list is not complete, and additional packages will
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need to be installed. This is usually seen as configure failing to
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detect net-snmp-devel as the configure script does a sanity check of
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the net-snmp build environment, based on the output of
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'net-snmp-config --agent-libs'.
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To see what your distribution requires, run 'net-snmp-config --agent-libs'.
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You will receive a response similar to the following:
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-L/usr/lib -lnetsnmpmibs -lnetsnmpagent -lnetsnmphelpers -lnetsnmp -ldl
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-lrpm -lrpmio -lpopt -lz -lcrypto -lm -lsensors -L/usr/lib/lib -lwrap
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-Wl,-E -Wl,-rpath,/usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE
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-L/usr/local/lib
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/usr/lib/perl5/5.8.8/i386-linux-thread-multi/auto/DynaLoader/DynaLoader.a
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-L/usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE -lperl -lresolv -lnsl
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-ldl -lm -lcrypt -lutil -lpthread -lc
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The packages required may include the following:
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2006-12-04 17:44:12 +00:00
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* bzip2-devel
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* lm_sensors-devel
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* newt-devel
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2006-02-26 20:46:11 +00:00
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SNMP support comes in two varieties -- as a sub-agent to a running SNMP
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daemon using the AgentX protocol, or as a full standalone agent. If
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you wish to run a full standalone agent, Asterisk must run as root in
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2006-12-19 22:02:27 +00:00
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order to bind to port 161.
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2006-02-26 20:46:11 +00:00
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Configuring access when running as a full agent is something that is
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left as an exercise to the reader.
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To enable access to the Asterisk SNMP subagent from a master SNMP
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daemon, one will need to enable AgentX support, and also make sure that
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Asterisk will be able to access the Unix domain socket. One way of
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doing this is to add the following to /etc/snmp/snmpd.conf:
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# Enable AgentX support
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master agentx
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# Set permissions on AgentX socket and containing
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# directory such that process in group 'asterisk'
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# will be able to connect
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agentXPerms 0660 0550 nobody asterisk
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This assumes that you run Asterisk under group 'asterisk' (and does
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not care what user you run as).
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