diff options
| -rwxr-xr-x | check_snmp_if | 49 |
1 files changed, 40 insertions, 9 deletions
diff --git a/check_snmp_if b/check_snmp_if index 279f397..bc2ae44 100755 --- a/check_snmp_if +++ b/check_snmp_if @@ -2,9 +2,18 @@ # https://ixnfo.com/en/snmp-oid-and-mib-for-interfaces.html # https://oidref.com/1.3.6.1.2.1.2.2.1 +# https://bestmonitoringtools.com/mibdb/mibdb_search.php?mib=IF-MIB RESULTS=(OK WARNING CRITICAL UNKNOWN) +readonly MIB_IFOPERSTATUS="1.3.6.1.2.1.2.2.1.8" +readonly MIB_ALIAS="1.3.6.1.2.1.31.1.1.1.18" +readonly MIB_NAME="1.3.6.1.2.1.31.1.1.1.1" +readonly MIB_IN="1.3.6.1.2.1.31.1.1.1.6" +readonly MIB_OUT="1.3.6.1.2.1.31.1.1.1.10" +readonly MIB_ERR_IN="1.3.6.1.2.1.2.2.1.14" +readonly MIB_ERR_OUT="1.3.6.1.2.1.2.2.1.20" + perror() { echo "$@" } >&2 @@ -25,7 +34,7 @@ result() { } walk() { - snmpwalk -c "$COMMUNITY" -v 2c "$HOSTNAME" "1.3.6.1.2.1.2.2.1.$1.$INTERFACE" + snmpwalk $AUTH "$HOSTNAME" "$1" return $? } @@ -46,7 +55,7 @@ perfdata() { GENPERFDATA=0 -while getopts ":H:c:i:" opt; do +while getopts ":H:c:i:u:p:" opt; do case $opt in H) HOSTNAME="$OPTARG" @@ -57,6 +66,12 @@ while getopts ":H:c:i:" opt; do i) INTERFACE="$OPTARG" ;; + u) + SNMP_USER="$OPTARG" + ;; + p) + SNMP_PW="$OPTARG" + ;; :) fail 3 "$OPTARG requires Argument." ;; @@ -65,7 +80,16 @@ while getopts ":H:c:i:" opt; do esac done -SNMPWALK_RESULT=$(snmpwalk -c "$COMMUNITY" -v 2c "$HOSTNAME" 1.3.6.1.2.1.2.2.1.8.$INTERFACE; exit $?) +AUTH="" +if [ -n "$COMMUNITY" ]; then + AUTH="-c $COMMUNITY -v 2c" +elif [ -n "$SNMP_USER" ] && [ -n "$SNMP_PW" ]; then + AUTH="-v 3 -u $SNMP_USER -A $SNMP_PW -l authNoPriv" +else + result 3 "No or insufficient authentication info provided" +fi + +SNMPWALK_RESULT=$(snmpwalk $AUTH "$HOSTNAME" "$MIB_IFOPERSTATUS.$INTERFACE"; exit $?) RET=$? [ $RET -ne 0 ] && result 3 "snmpwalk failed with code $RET: $SNMPWALK_RESULT" @@ -73,12 +97,19 @@ RET=$? GENPERFDATA=1 -INOCTETS=$(walk 10 | extract_val) -OUTOCTETS=$(walk 16 | extract_val) +NAME=$(walk "$MIB_NAME.$INTERFACE" | extract_val) +ALIAS=$(walk "$MIB_ALIAS.$INTERFACE" | extract_val) + +COMPLETE_NAME="$NAME" +if [ -n "$ALIAS" ]; then COMPLETE_NAME+=" ($ALIAS)"; fi + +INOCTETS=$(walk "$MIB_IN.$INTERFACE" | extract_val) +OUTOCTETS=$(walk "$MIB_OUT.$INTERFACE" | extract_val) + +INERRORS=$(walk "$MIB_ERR_IN.$INTERFACE" | extract_val) +OUTERRORS=$(walk "$MIB_ERR_OUT.$INTERFACE" | extract_val) -INERRORS=$(walk 14 | extract_val) -OUTERRORS=$(walk 20 | extract_val) +extract_val <<< "$SNMPWALK_RESULT" | grep "up\|1" > /dev/null && result 0 "$COMPLETE_NAME is up." -sed -n 's/.*=\(.*\)/\1/p' <<< "$SNMPWALK_RESULT" | grep "up\|1" > /dev/null && result 0 "Interface $INTERFACE is up." -result 2 "Interface $INTERFACE is not up: $SNMPWALK_RESULT" +result 2 "$COMPLETE_NAME $INTERFACE is not up: $SNMPWALK_RESULT" |