10月 22

net-snmp インストール

By ststyle Watch, net-snmp コメントは受け付けていません。

SNMPのインストール

「SNMP」とは「Simple Network Management Protocol」の略でルータやコンピュータなどの
様々な機器を監視、制御するためのプロトコルです。

SourceForgetから
net-snmp-5.1.2.tar.gzをDLします

http://sourceforge.net/project/showfiles.php?group_id=12694


$ tar xvzf net-snmp-5.4.1.2.tar.gz
$ cd net-snmp-5.4.1.2
$ ./configure
$ make
$ su
# make install

./configureの途中でSNMPのバージョンを

一番最初に問われるので ” v2 “ と入力し、(Enterでも良いです)
あとは全てEnterですっ飛ばします。

SNMP設定

デーモンの設定を行います

デフォルトの設定をコピーして、編集します。
編集すべき部分を矢印で示しますので、変更してください。


# cp EXAMPLE.conf /usr/local/share/snmp/snmpd.conf
# vi /usr/local/share/snmp/snmpd.conf

####
# First, map the community name (COMMUNITY) into a security name
# (local and mynetwork, depending on where the request is coming
# from):

# sec.name source community
→  com2sec local localhost private
→  #com2sec mynetwork XXX.XXX.XXX.0/24 public

####
# Second, map the security names into group names:

# sec.model sec.name
group MyRWGroup v1 local
group MyRWGroup v2c local
group MyRWGroup usm local
group MyROGroup v1 local
group MyROGroup v2c local
group MyROGroup usm local

####
# Third, create a view for us to let the groups have rights to:

# incl/excl subtree mask
view all included .1 80

####
# Finally, grant the 2 groups access to the 1 view with different
# write permissions:

# context sec.model sec.level match read write notif
access MyROGroup "" any noauth exact all none none
access MyRWGroup "" any noauth exact all all none

###################################
# System contact information
#

# It is also possible to set the sysContact and sysLocation system
# variables through the snmpd.conf file. **PLEASE NOTE** that setting
# the value of these objects here makes these objects READ-ONLY
# (regardless of any access control settings). Any attempt to set the
# value of an object whose value is given here will fail with an error
# status of notWritable.

syslocation Right here, right now.
→  syscontact admin <admin@server.jp>

一番下に書いたsyscontactは各自、管理用のユーザ・アドレスに置き換えてください。

起動スクリプトの作成

「/etc/init.d/snmpd」として保存してください。


vi /etc/init.d/snmpd

#!/bin/bash
# ucd-snmp init file for snmpd
#
# chkconfig: - 50 50
# description: Simple Network Management Protocol (SNMP) Daemon
#
# processname: /usr/local/sbin/snmpd
# config: /usr/local/share/snmp/snmpd.conf
# pidfile: /var/run/snmpd

# source function library
. /etc/init.d/functions

OPTIONS="-Lsd -Lf /dev/null -p /var/run/snmpd -a"
RETVAL=0
prog="snmpd"

start() {
echo -n $"Starting $prog: "
if [ $UID -ne 0 ]; then
RETVAL=1
failure
else
daemon /usr/local/sbin/snmpd $OPTIONS
RETVAL=$?
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/snmpd
fi;
echo
return $RETVAL
}

stop() {
echo -n $"Stopping $prog: "
if [ $UID -ne 0 ]; then
RETVAL=1
failure
else
killproc /usr/local/sbin/snmpd
RETVAL=$?
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/snmpd
fi;
echo
return $RETVAL
}

reload(){
echo -n $"Reloading $prog: "
killproc /usr/local/sbin/snmpd -HUP
RETVAL=$?
echo
return $RETVAL
}

restart(){
stop
start
}

condrestart(){
[ -e /var/lock/subsys/snmpd ] && restart
return 0
}

case "$1" in
start)
start
;;
stop)
stop
;;
restart)
restart
;;
reload)
reload
;;
condrestart)
condrestart
;;
status)
status snmpd
RETVAL=$?
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|reload}"
RETVAL=1
esac

exit $RETVAL

(アンパサンド書き換えて三箇所)

権限付与と自動起動の設定

# cd /etc/init.d
# chmod 755 snmpd
# chkconfig --add snmpd
# chkconfig --level 2345 snmpd on

SNMPの実行


/etc/init.d/snmpd start
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