Skip to content

Posts categoriezed as CentOS

Installing TCPPing and HPing on CentOS 7.x

Installing TCPPing and HPing on CentOS 7.x published on 3 Comments on Installing TCPPing and HPing on CentOS 7.x

Install TCPPing

1: Install tcptraceroute


shell> sudo yum install tcptraceroute

2: Download TCPPing and set permissions


shell> sudo cd /usr/bin/
shell> sudo wget https://pingpros.com/pub/tcpping
shell> sudo chmod 755 tcpping

Install HPing

1: Install EPEL Repository

shell> sudo yum install epel-release

2: Install HPing3

shell> sudo yum install hping3

 

Credits:
TCPPING – http://www.vdberg.org/~richard/tcpping

rsyslog Configuration with multiple hosts on CentOS 7.x

rsyslog Configuration with multiple hosts on CentOS 7.x published on 3 Comments on rsyslog Configuration with multiple hosts on CentOS 7.x

yum install rsyslog

yum install postfix

chkconfig rsyslog on

sudo mkdir /var/log/syslog

vim /etc/rsyslog.conf

 

Uncomment the UDP and TCP syslog reception items to match below:

# Provides UDP syslog reception
$ModLoad imudp
$UDPServerRun 514

# Provides TCP syslog reception
$ModLoad imtcp
$InputTCPServerRun 514

Add Template before GLOBAL DIRECTIVES

$template RemoteLogs,”/var/log/syslog/%HOSTNAME%/%$now%.log” *
*.* ?RemoteLogs
& ~

Make sure rsyslog is on on boot and restart it

systemctl enable rsyslog.service

systemctl restart rsyslog.service

 

Setup Email Alerting

$ModLoad ommail
$ActionMailSMTPServer localhost
$ActionMailFrom networkteam@pingpros.com
$ActionMailTo networkteam@pingpros.com
$template mailSubject,”Network Issue on %hostname%”
$template mailBody,”RSYSLOG Alert\nmsg=’%msg%'”
$ActionMailSubject mailSubject
# make sure we receive a mail only once in an
# hours (3600 seconds)
$ActionExecOnlyOnceEveryInterval 3600
# the if … then … mailBody must be on one line!
if ($msg contains ‘BGP’ or $msg contains ‘bgp’ or $msg contains ‘OSPF’ or $msg contains ‘ospf’ or $msg contains ‘FLAP’ or $msg contains ‘down’ or $msg contains ‘DOWN’ or $msg contains ‘SPAN’ or $msg contains ‘span’ or $msg contains ‘loop’ or $msg contains ‘LOOP’ or $msg contains ‘up’ or $msg contains ‘UP’) then :ommail:;mailBody
# re-set interval so that other actions are not affected
$ActionExecOnlyOnceEveryInterval 0

Setup logrotate

sudo vim /etc/logrotate.conf

At very bottom of the file do the following

# Rotate the log daily up to 5 years of retention 365 times 5

/var/log/syslog/*.log /var/log/syslog/*/*.log {
dateext
dateformat .%Y-%m-%d
daily
rotate 1825
compress
}

Test the rotations

logrotate -d /etc/logrotate.conf

Linux deprecated ifconfig commands in CentOS 7

Linux deprecated ifconfig commands in CentOS 7 published on No Comments on Linux deprecated ifconfig commands in CentOS 7

Linux ifconfig commands are being deprecated. Here is a quick overview.

 

Deprecated command

Replacement command(s)
arp ip n (ip neighbor)
ifconfig ip a (ip addr), ip link, ip -s (ip -stats)
iptunnel ip tunnel
iwconfig iw
nameif ip link, ifrename
netstat ss, ip route (for netstat-r), ip -s link (for netstat -i), ip maddr (for netstat-g)
route ip r (ip route)

Installing Smokeping On CentOS 5.x and 6.x

Installing Smokeping On CentOS 5.x and 6.x published on 6 Comments on Installing Smokeping On CentOS 5.x and 6.x
NOTE: THIS INSTALLATION HAS BEEN TESTED TO BE WORKING WITH CENTOS 5.X – 6.x

Prep your server

  • Step 1: Disable SELinux 

shell> setenforce 0

  • Step 2: Install rpmforge

shell> yum install http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm

  • Step 3: Install Required Packages

shell> yum install mod_fcgid httpd httpd-devel rrdtool fping wget curl bind-utils gcc make gcc-c++

  • Step 4: Install Perl based packages

shell> yum install perl perl-Net-Telnet perl-Net-DNS perl-LDAP perl-libwww-perl perl-RadiusPerl perl-IO-Socket-SSL perl-Socket6 perl-CGI-SpeedyCGI perl-FCGI perl-RRD-Simple perl-CGI-SpeedCGI perl-ExtUtils-MakeMaker

 

Install Apache

  • Step 1: Install Apache and ensure it runs on startup
shell> yum install httpd
shell> chkconfig httpd on
shell> /etc/init.d/httpd start

Install Smokeping

  • Step 1: Download latest version of smokeping on website at http://oss.oetiker.ch/smokeping/pub

shell> wget http://oss.oetiker.ch/smokeping/pub/smokeping-2.6.9.tar.gz

  • Step 2: Extract and install smokeping

shell> tar -zxvf smokeping-2.6.9.tar.gz -C /opt/
shell> mkdir /opt/smokeping
shell> cd /opt/smokeping-2.6.9/setup
shell> ./build-perl-modules.sh
shell> cp -r ../thirdparty /opt/smokeping/
shell>  cd ..
shell> ./configure –prefix=/opt/smokeping
shell>  make install

  • Step 3: Create missing folders needed
shell> cd /opt/smokeping
shell> mkdir data
shell> mkdir var
  • Step 4: Add Smokeping Start/Stop Script
shell> wget https://pingpros.com/pub/smokeping
shell> mv smokeping /etc/init.d/smokeping
shell> chmod 755 /etc/init.d/smokeping

Configure Smokeping Application

  • Step 1: Rename Config Files and set file permissions

shell> cd /opt/smokeping/etc/
shell> for foo in *.dist; do cp $foo `basename $foo .dist`; done
shell> chmod 600 /opt/smokeping/etc/smokeping_secrets.dist

  • Step 2: Change Default Config

shell> cd /opt/smokeping/etc/
shell> vim config

Change the values in bold to something that fit your needs
owner    = Peter Random
contact  = some@address.nowhere
mailhost = my.mail.host
sendmail = /usr/sbin/sendmail
# NOTE: do not put the Image Cache below cgi-bin
# since all files under cgi-bin will be executed … this is not
# good for images.
imgcache = /opt/smokeping/cache
imgurl   = cache
datadir  = /opt/smokeping/data
piddir  = /opt/smokeping/var
cgiurl   = http://some.url/smokeping.cgi
smokemail = /opt/smokeping/etc/smokemail.dist
tmail = /opt/smokeping/etc/tmail.dist
Here is an example change in bold
owner    = PingPros.com
contact  = something@pingpros.com
mailhost = mail.pingpros.com
sendmail = /usr/sbin/sendmail
# NOTE: do not put the Image Cache  below cgi-bin
# since all files under cgi-bin will be executed … this is not
# good for images.
imgcache = /opt/smokeping/cache
imgurl   = /cache
datadir  = /opt/smokeping/data
piddir  = /opt/smokeping/var
cgiurl   = http://(IP  or Hostname)/cgi-bin/smokeping.fcgi
smokemail = /opt/smokeping/etc/smokemail.dist
tmail = /opt/smokeping/etc/tmail.dist
  • Step 3: Copy Smokeping files into web server
shell> cp -r /opt/smokeping/htdocs/cropper /var/www/cgi-bin/
shell> cp /opt/smokeping/htdocs/smokeping.fcgi.dist /var/www/cgi-bin/smokeping.fcgi
shell> cd /var/www/html/
shell> mkdir cache
shell> chown apache cache
shell> ln -s /var/www/html/cache /opt/smokeping/cache
  • Step 4: Start Smokeping
shell> /etc/init.d/httpd start
shell> /etc/init.d/smokeping start
  • Step 5: Test Smokeping Link for errors
    • Visit the cgi-url you configured above. IE: cgiurl   = http://(IP  or Hostname)/cgi-bin/smokeping.fcgi
  • Step6: Clean Up Smokeping Installation Files

shell> rm -rf /opt/smokeping-2.6.9

  • Enable smokeping to start during boot
shell> chkconfig –add  smokeping
shell> chkconfig httpd on
shell> chkconfig smokeping on

Install TCPPing and Change TCPPing/FPing Intervals – Recommended

  • Install TCPTraceroute

shell> yum install tcptraceroute

  • Install TCPPing

shell> cd /usr/bin/
shell> wget https://pingpros.com/pub/tcpping
shell> chmod 755 tcpping

  • Configure Probe into Smokeping

shell> vim /opt/smokeping/etc/config

Add Below under *** Probes *** (note: I prefer setting it up to ping every 60 second interval in this example…FPING will already be there just add the step = 60 configlet)

+ FPing
binary = /usr/sbin/fping
step = 60

+ TCPPing
binary = /usr/bin/tcpping
step = 60

  • Restart smkeping to use new config

shell> /etc/init.d/smokeping restart

Configure Smokeping to monitoring your targets

  • Step 1: Add your own hosts in the config file
shell> vim /opt/smokeping/etc/config
Example  config file below in bold
*** Targets ***
probe = FPing
menu = Top
title = Network Latency Grapher
remark = Welcome to the SmokePing website of PingPros. \
         Here you will learn all about the latency of our network.
+ Targets
menu = Network
title = Ping Network Equipment
++ rchicago1
menu = ChicagoR1
title =Chicago Router 1
host = 10.1.1.1
++ schicago1
menu = ChicagoS1
title = Chicago Switch 1
probe = TCPPing
port = 80
host = 10.1.1.254
  • Restart smkeping to use new config

shell> /etc/init.d/smokeping restart

NOTE ABOVE: rchicago1 is using FPing by default as is configured to be the default, schicago1 is using TCPPING because we specified it. It is recommended to utilize TCPPING whenever possible! It is also best practice to put in the probe parameters for each host!

 

END OF TUTORIAL

 

Credits:
TCPPING – http://www.vdberg.org/~richard/tcpping
Smokeping – http://oss.oetiker.ch/smokeping/