Unix Admin Guide

Monday, November 23, 2020

OPENNMS : How to get OID for custom scripts

add your script on target nodes.

edit snmpd.conf accordingly

restart snmpd

Run below command

# for i in `snmpwalk -v 2c -c TselSA 127.0.0.1 NET-SNMP-EXTEND-MIB::nsExtendObjects| grep "NET-SNMP-EXTEND-MIB::nsExtendOutLine." | cut -d "=" -f1`; do echo $i; echo "snmptranslate -On '$i'" >> a.sh ; done

NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".1

NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".2

NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".3

NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".4

NET-SNMP-EXTEND-MIB::nsExtendOutLine."billingApi".1

NET-SNMP-EXTEND-MIB::nsExtendOutLine."billingApi".2

NET-SNMP-EXTEND-MIB::nsExtendOutLine."billingApi".3

NET-SNMP-EXTEND-MIB::nsExtendOutLine."Erecharge_Session_JWT".1

# cat a.sh

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".1'

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".2'

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".3'

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."OM_LATEST".4'

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."billingApi".1'

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."billingApi".2'

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."billingApi".3'

snmptranslate -On 'NET-SNMP-EXTEND-MIB::nsExtendOutLine."Erecharge_Session_JWT".1'

# sh a.sh

.1.3.6.1.4.1.8072.1.3.2.4.1.2.9.79.77.95.76.65.84.69.83.84.1

.1.3.6.1.4.1.8072.1.3.2.4.1.2.9.79.77.95.76.65.84.69.83.84.2

.1.3.6.1.4.1.8072.1.3.2.4.1.2.9.79.77.95.76.65.84.69.83.84.3

.1.3.6.1.4.1.8072.1.3.2.4.1.2.9.79.77.95.76.65.84.69.83.84.4

.1.3.6.1.4.1.8072.1.3.2.4.1.2.10.98.105.108.108.105.110.103.65.112.105.1

.1.3.6.1.4.1.8072.1.3.2.4.1.2.10.98.105.108.108.105.110.103.65.112.105.2

.1.3.6.1.4.1.8072.1.3.2.4.1.2.10.98.105.108.108.105.110.103.65.112.105.3

.1.3.6.1.4.1.8072.1.3.2.4.1.2.21.69.114.101.99.104.97.114.103.101.95.83.101.115.115.105.111.110.95.74.87.84.1

Add above IOD to polling setting to monitor

Unix/linux: parameter now, 1 hour ago, 2 hours ago

getdatenow=`date +%Y/%m/%d" "%H`

getdate1hago=`date --date="1 hour ago" +%Y/%m/%d" "%H`

getdate2hago=`date --date="2 hour ago" +%Y/%m/%d" "%H`

getdate3hago=`date --date="3 hour ago" +%Y/%m/%d" "%H`

Unix/linux: how to arithmetic in /bin/sh and grep log based on last hours event happened

# calculator

y0=0

y1=0

y2=0

y3=0

t0=0

t1=0

t2=0

t3=0

getdatenow=`date +%Y/%m/%d" "%H`

getdate1hago=`date --date="1 hour ago" +%Y/%m/%d" "%H`

getdate2hago=`date --date="2 hour ago" +%Y/%m/%d" "%H`

getdate3hago=`date --date="3 hour ago" +%Y/%m/%d" "%H`

# processing today loga

y0=`grep "unable to send message to peer," /logs/UL_$yesterday\_*| grep "$getdatenow" | wc -l`

y1=`grep "unable to send message to peer," /logs/UL_$yesterday\_*| grep "$getdate1hago" | wc -l`

y2=`grep "unable to send message to peer," /logs/UL_$yesterday\_*| grep "$getdate2hago" | wc -l`

y3=`grep "unable to send message to peer," /logs/UL_$yesterday\_*| grep "$getdate3hago" | wc -l`

# processing today loga

t0=`grep "unable to send message to peer," /logs/UL_$getdate\_*| grep "$getdatenow" | wc -l`

t1=`grep "unable to send message to peer," /logs/UL_$getdate\_*| grep "$getdate1hago" | wc -l`

t2=`grep "unable to send message to peer," /logs/UL_$getdate\_*| grep "$getdate2hago" | wc -l`

t3=`grep "unable to send message to peer," /logs/UL_$getdate\_*| grep "$getdate3hago" | wc -l`

NUMBER_ERROR_DETECTED=`expr "$y0 + $y1 + $y2 + $y3 + $t0 + $t1 + $t2 + $t3" | bc`

echo $NUMBER_ERROR_DETECTED

Friday, March 2, 2018

UNIX: check CPU usage and disk usage

Script to check cpu usage

grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} END {print usage "%"}'

#!/bin/bash

limit=2
email_destination="whatever@gmail.com"
email_body="WARNING the CPU usage on server `hostname` exceeded the limit you set ($limit)%"
email_subject="WARNING cpu usage"

usage=`grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} END {print usage}' | bc`

if echo $usage $limit | awk '{exit $1>$2?0:1}'
then
echo -e $email_body | mail -s "$email_subject" $email_destination
#echo 'alarm'
fi
_____________________________________________________

Disk space not updating in linux df -h after deleted files

ls -ld /proc/*/fd/* 2>&1 | fgrep '(deleted)'

restart the process that hold it

UNIX: sum and print total content of file

$ cat tpsCCRT.txt | awk '{sum+=$1} END {print "Count: ",NR;print "Avg :",sum/NR}'
Count: 1441
Avg : 15.6232
$

LinuxL Find file with certain permission

[root]# ls -l `find . -type f ! -perm 0755`

-rw-rw-r-- 1 root root 32550 Jan 18 14:20 ./centric_crm_tools-5.0.jar

-rw-rw-r-- 1 root root 8917 Jan 18 14:20 ./centric-troubleticketer-21.0.3.jar

-rw-rw-r-- 1 root root 10725 Jan 18 13:50 ./jdhcp-1.2.0.jar

-rw-rw-r-- 1 root root 228516 Jan 18 13:41 ./jradius-core-1.1.5.jar

-rw-rw-r-- 1 root root 4788404 Jan 18 13:41 ./jradius-dictionary-1.1.5.jar

-rw-r--r-- 1 root root 18289 Jan 18 13:51 ./opennms-alarm-northbounder-jms-21.0.3.jar

-rw-rw-r-- 1 root root 50911 Jan 18 13:51 ./opennms-dns-provisioning-adapter-21.0.3.jar

-rw-rw-r-- 1 root root 45429 Jan 18 13:49 ./opennms-integration-otrs-21.0.3.jar

-rw-rw-r-- 1 root root 60857 Jan 18 13:49 ./opennms-integration-otrs-31-21.0.3.jar

-rw-rw-r-- 1 root root 6037 Jan 18 13:49 ./opennms-integration-otrs-common-21.0.3.jar

-rw-rw-r-- 1 root root 7792 Jan 18 13:49 ./opennms-integration-rt-21.0.3.jar

-rw-r--r-- 1 root root 35841272 Jan 18 14:02 ./opennms_jmx_config_generator.jar

-rw-rw-r-- 1 root root 368488 Jan 18 13:51 ./opennms-rancid-provisioning-adapter-21.0.3.jar

-rw-rw-r-- 1 root root 49068 Jan 18 13:51 ./opennms-reverse-dns-provisioning-adapter-21.0.3.jar

-rw-rw-r-- 1 root root 54680 Jan 18 13:51 ./opennms-snmp-asset-provisioning-adapter-21.0.3.jar

-rw-rw-r-- 1 root root 55477 Jan 18 13:51 ./opennms-snmp-hardware-inventory-provisioning-adapter-21.0.3.jar

-rw-rw-r-- 1 root root 11951 Jan 18 13:51 ./opennms-vtdxml-collector-handler-21.0.3.jar

-rw-rw-r-- 1 root root 1871026 Jan 18 13:41 ./org.opennms.dependencies.jradius-extended-21.0.3.jar

-rw-rw-r-- 1 root root 22018 Jan 18 13:47 ./org.opennms.features.juniper-tca-collector-21.0.3.jar

-rw-r--r-- 1 root root 23005 Jan 18 13:50 ./org.opennms.features.ncs.ncs-drools-21.0.3.jar

-rw-r--r-- 1 root root 19288 Jan 18 13:50 ./org.opennms.features.ncs.ncs-northbounder-21.0.3.jar

-rw-r--r-- 1 root root 25031 Jan 18 13:45 ./org.opennms.features.ncs.ncs-persistence-21.0.3.jar

-rw-rw-r-- 1 root root 9602 Jan 18 13:51 ./org.opennms.protocols.cifs-21.0.3.jar

-rw-rw-r-- 1 root root 41591 Jan 18 13:50 ./org.opennms.protocols.dhcp-21.0.3.jar

-rw-rw-r-- 1 root root 63485 Jan 18 13:50 ./org.opennms.protocols.nsclient-21.0.3.jar

-rw-rw-r-- 1 root root 25416 Jan 18 13:50 ./org.opennms.protocols.radius-21.0.3.jar

-rw-rw-r-- 1 root root 47068 Jan 18 13:50 ./org.opennms.protocols.xmp-21.0.3.jar

-rw-rw-r-- 1 root root 637560 Jan 18 13:51 ./vtd-xml-2.11.jar

-rw-rw-r-- 1 root root 88198 Jan 18 13:50 ./xmp-1.40.jar

[root]#

Friday, May 26, 2017

Unix: Find list of files in gz format contain strings

$ find . -name "*.gz" -exec zgrep -la bbarney03@xxxx.com \{\} \;
./aaa_1/231_20160606193002_232895_330_20160606_231655_1_0000_01.act.gz
./aaa_1/231_20160606173001_604598_330_20160606_211628_1_0000_01.act.gz
./aaa_1/232_20160606191508_769207_935_20160606_230502_1_0000.act.gz
./aaa_1/232_20160606191600_522897_329_20160606_230518_1_0000.act.gz
./aaa_1/232_20160606160002_239869_935_20160606_194946_1_0000.act.gz
./aaa_1/232_20160606094601_736357_329_20160606_133804_1_0000.act.gz
./aaa_1/232_20160606103002_77028_935_20160606_141917_1_0000.act.gz
./aaa_1/231_20160606113107_109722_840_20160606_152107_1_0000.act.gz
./aaa_1/231_20160606120002_183644_330_20160606_154014_1_0000_03.act.gz
./aaa_1/231_20160606094501_813187_330_20160606_133446_1_0000_00.act.gz
./aaa_1/232_20160606114501_577769_935_20160606_153424_1_0000.act.gz
./aaa_1/232_20160606104600_643312_329_20160606_143819_1_0000.act.gz
./aaa_1/232_20160606103107_699907_837_20160606_141919_1_0000.act.gz
./aaa_1/231_20160606120019_863535_330_20160606_154515_1_0000_01.act.gz
./aaa_1/232_20160606094701_251538_329_20160606_133804_1_0000_03.act.gz
./aaa_1/232_20160606153002_294217_935_20160606_191943_1_0000.act.gz
./aaa_1/232_20160606160107_988588_837_20160606_194949_1_0000.act.gz
./aaa_1/232_20160606160102_442949_329_20160606_195433_1_0000.act.gz
./aaa_1/232_20160606114603_483834_837_20160606_153426_1_0000.act.gz
./aaa_1/231_20160606153002_218144_330_20160606_191602_1_0000_02.act.gz

$ zgrep -i bbarney03@xxxx.com 231_20160609122102_492219_840_20160609_160748_1_0000.act.gz

$ zgrep -la bbarney03@sxxxxcom 231_20160609122102_492219_840_20160609_160748_1_0000.act.gz

find . -name "*.gz" -exec zgrep -la 8434763502 \{\} \;
find . -name "*.gz" -exec zgrep -la 50495939382 \{\} \;