Syed Jahanzaib Personal Blog to Share Knowledge !

July 18, 2014

Odd Results with Scheduled Batch Files in Windows Server 2008 R2

Filed under: Microsoft Related — Tags: , — Syed Jahanzaib / Pinochio~:) @ 8:44 AM

MS DOS BATCH FILE VIA 2008 R2 Scheduled Task / zaib

MS DOS BATCH FILE VIA 2008 R2 Scheduled Task / zaib

Recently I upgraded one of our old File server previously running Windows 2003 with Windows 2008 R2 64bit. this server was a member of AD and was logging with domain admin account.  Everything went smooth, but after few days I faced an strange issue that few scheduled BATCH files were not running properly at given time. If I try to execute batch file manual, they give proper result, but from schedule they dont, even by right click on the task and selecting RUN dont actually execute the batch file. To resolve this issue I added the admin account in Domain Group Policy and every thign now running fine as expected.

  • Edit Group Policy at Domain Controller
  • Goto “Computer ConfigurationPolicies > Windows Settings > Security Settings > Local Policies > Users Rights Assignment
  • Now on Right side menu, Double click on  “Log on as a batch job” to take its properties,
  • then click button “Add user or Group
  • then click button “Browse”
  • then click button “Advanced”
  • then button “Find now
  • Add your required user ID / Account here like “administrator” or likewise
  • and then “OK
  • Force by gpupdate /force at DC and Client as well.
  • (Or if pc is stand alone, then goto “Start” > Administrative tools > local security policy”)

.

This solved my problem of BATCH files not running via Scheduled Task,

Regard’s

 

July 7, 2014

Smokeping to Monitor Network Latency in UBUNTU

Filed under: Linux Related — Tags: — Syed Jahanzaib / Pinochio~:) @ 11:41 AM

ping

smokeping-for-wan

Recently I was troubleshooting a network where concerned Admin complained that they frequently lost connectivity with the Internet. Sometimes pings replies works okay but latency gets high or timeout / breaks occurs. So I decided to setup mrtg base ping graph to monitor ping latency. The custom made mrtg ping probe worked fine and can provide an overview on target ping / rtt and Downtime in a nice manner,

BUT . . . . . . . . . . . . . . . . . . .

I was thinking far ahead , I was thinking for much more advanced latency and pin point graphs which can show ping latency / rtt / loss in much more detailed way. I recalled my memory from old days when I used to monitor my old network with variety of tools and scripts and suddenly a name popped in my mind ” SMOKEPING ” , yes this was the tool I was looking for.

SmokePing generates graphs that can reveal the quality (packet loss and latency variability) & reach-ability of your IP address from several distributed locations. SmokePing is a network latency monitor. It measures network latency to a configurable set of destinations on the network, and displays its findings in easy-to-read Web pages. It uses RRDtool as its logging and graphing back-end, making the system very efficient. The presentation of the data on the Web is done through a CGI with some AJAX capabilities for interactive graph exploration.


  • In this article I will show you howto install smokeping on UBUNTU 10/12

 

First install required components along with smokeping and apache2 (you can remove Apache or any other component if its not required or already installed)

aptitude install smokeping curl libauthen-radius-perl libnet-ldap-perl libnet-dns-perl libio-socket-ssl-perl libnet-telnet-perl libsocket6-perl libio-socket-inet6-perl apache2

Once all is installed, we have to modify few configuration files.

Open following following …

nano /etc/smokeping/config.d/pathnames

now remove sendmail entry by adding # sign to to comment the sendmail line, usually the first line.
Save and exit.

Now open following file

nano /etc/smokeping/config.d/Targets

Now REMOVE all previous lines , and copy paste following

*** Targets ***
probe = FPing

menu = Top
title = Network Latency Grapher
remark = Welcome to the SmokePing website of <b>ZAIB (Pvt) Ltd.</b>
Here you will learn all about the latency of our network.




This page is maintained by ZAIB. (Pvt) ltd .

Support Email: aacable@hotmail.com
Web: https://aacable.wordpress.com

### YOU CAN CHANGE THE FOLLOWING ACCORDING TO YOUR NETWORK ###

+ Ping

menu = WAN Connectivity
title = WAS Side Network

++ yahoo

menu = yahoo
title = yahoo ping report
host = yahoo.com

++ google

menu = google
title = Google ping report
host = google.com

### YOU CAN CHANGE FOLLOWING ACCORDING TO YOUR NETWORK ###
+ Ping2

menu = LAN Connectivity
title = LAN Side Network

++ Mikrotik

menu = Mikrotik
title = Mikrotik PPP ping report
host = 10.10.0.1

++ Billing

menu = Billing
title = Radius billing Server ping report
host = 10.0.0.2

save and exit.

now restart smokeping service by

service smokeping restart

and access it via browser.

http://yourip/smokeping/smokeping.cgi

Results should be something like below image…

lan

 

wan-report

 

More info on previous smokeping article based on FEDORA 10 , (Old version) Just for idea

https://aacable.wordpress.com/tag/aacable-smokeping/

 

 

MRTG Monitoring with ESXi Hosted Guest Return ‘interface is commented * has no ifSpeed property’

Filed under: Linux Related, Mikrotik Related — Tags: , , — Syed Jahanzaib / Pinochio~:) @ 9:09 AM

Recently at a network, I migrated the mikrotik base RB configuration to esxi base VM guest. Everything went fine, this Mikrotik have snmp configured, and it is monitored via linux base MRTG for various probes. after migration, mrtg graph for itnerfaces stopped with following (when i re run the cfgmaker)

### The following interface is commented out because:
### * has no ifSpeed property

After playing with the itnerfaces & mrtg values, I found two solutions

Solution # 1

Network adapter need to be “E1000″ rather then  “flexible”.  Then SNMP will see the ifspeed correctly.
To make changes, its recommended to turn off the guest.

Solution # 2

Assign this speed in bits-per-second to all interfaces which return 0 for ifSpeed and ifHighSpeed

Create the cfg file with following syntax “–zero-speed=100000000 ”

 cfgmaker -zero-speed=100000000 snmp_community@192.168.1.1 > mikrotik.cfg

[192.168.1.1 is mikrotik ip]

 

July 2, 2014

LUSCA Automated Install Scriptt

Filed under: Linux Related — Tags: , — Syed Jahanzaib / Pinochio~:) @ 12:22 PM

lusca_image


 

Following is an automated script to install LUSCA r14942 for UBUNTU with aggressive content caching support including some video web sites like YOUTUBE and few others as described in my other article @
https://aacable.wordpress.com/2014/04/21/howto-cache-youtube-with-squid-lusca-and-bypass-cached-videos-from-mikrotik-queue/

I will add more n more functions as soon as I get some free time, like configurable options via choice menu like cache size, mem, and other variables.


 

SCRIPT FUNCTIONS . . . 

This script will do the following

  • Update Ubuntu
  • Install some components required for Compilation of Lusca/Squid package
  • Backup squid.conf if already in /etc/squid.conf with squid.conf.old, stop any running squid instance
  • Download LUSCA r14942 source package to /temp folder and compile it
  • Download squid.conf and storeurl.pl from the internet and place them in /etc/squid.conf
  • Create cache directory like in /cache-1 and default cache size is 5 GB
  • add squid in /etc/rc.local so it may start auto upon system reboot

Note: You should modify all options in /etc/squid.conf after installation , like cache_dir, cache_mem and others as per your network and hardware specifications.


 

REQUIREMENTS . . .

1- Fresh Installation of UBUNTU OS and Configure Internet Access
2- root access to execute script
3- REMOVE ANY KIND OF PREVIOUSLY INSTALLED SQUID INSTALLATION IF ANY
4- Upload or create script in any folder of Ubuntu box,

or create new script with following commands

mkdir /temp
cd /temp
touch lusca_install.sh
chmod +x lusca_install.sh

nano lusca_install.sh

and paste the following code . . .


 


#!/bin/bash
# Version 1.0 / 2nd July, 2014
# LUSCA r14942 Automated Installation Script for Ubuntu flavor / jz
# Syed Jahanzaib / aacable @ hotmail.com  / https://aacable.wordpress.com

# Setting Variables . . . [JZ]
# You can change the URL if default url is not accessible in some cases. 
#URL=http://aacable.rdo.pt/files/linux_related/lusca
URL=http://wifismartzone.com/files/linux_related/lusca
SQUID_DIR="/etc/squid"
CACHE_DIR="/cache-1"
pid=`pidof squid`
osver=`cat /etc/issue |awk '{print $1}'`
squidlabel="LUSCA_HEAD-r14942"

# Colors Config  . . . [[ JZ . . . ]]
ESC_SEQ="\x1b["
COL_RESET=$ESC_SEQ"39;49;00m"
COL_RED=$ESC_SEQ"31;01m"
COL_GREEN=$ESC_SEQ"32;01m"

# OS checkup for UBUNTU
echo -e "$COL_GREEN Lusca r14942 Automated Installation Script ver 1.0 for Ubuntu . . .$COL_RESET"
echo -e "$COL_GREEN Checking OS version, as it must be Ubuntu in order to Continue . . .$COL_RESET"
if [[ $osver == Ubuntu ]]; then
echo
echo -e "$COL_GREEN Ubuntu is installed with following information fetched. $COL_RESET"
lsb_release -a
sleep 3
else
echo -e "$COL_RED Sorry, it seems your Linux Distribution is not UBUNTU . Exiting ...$COL_RESET"
exit 1
fi

# Make sure only root can run our script / Checking if user is root, otherwise exit with error [[Jz]]
echo
echo -e "$COL_GREEN Verifying if you are logged in with root privileges  . . .$COL_RESET" 1>&2
FILE="/tmp/out.$$"
GREP="/bin/grep"
if [ "$(id -u)" != "0" ]; then
echo
echo -e "$COL_RED This script must be run as root, switch to root now . . .$COL_RESET" 1>&2
exit 1
fi

# Clearing previous download if any in /tmp folder
echo
echo -e "$COL_GREEN Clearing previous downloads if any in /tmp folder to avoid duplication$COL_RESET"
sleep 3

rm -fr /tmp/squid.conf
rm -fr /tmp/storeurl.txt
rm -fr /tmp/storeurl.pl
rm -fr /tmp/LUSCA_HEAD-r14942*

# Checking IF $URL is accessible m if YES then continue further , otherwise EXIT the script with ERROR ! [[ JZ .. . .]]
echo
echo -e "$COL_GREEN Checking if $URL is accessible in order to proceed further. . .!! $COL_RESET"
cd /tmp
wget -q $URL/squid.conf
{
if [ ! -f /tmp/squid.conf ]; then
echo
echo -e "$COL_RED ERROR: Unable to contact $URL, or possibly internet is not working or your IP is in black list at destination server  !! $COL_RESET"
echo -e "$COL_RED ERROR: Please check manual if $URL is accessible or not or if it have required files, JZ  !! $COL_RESET"
exit 0
fi
}
rm -fr /tmp/squid.conf
sleep 6
# Moving further . . .

clear
echo -e "$COL_GREEN You are logged in with root ID, Ok to proceed further . . .!! $COL_RESET"
echo

################################################################## [zaib]
echo
echo -e "$COL_GREEN Updating Ubuntu first . . . !! $COL_RESET"
apt-get update
echo
echo
echo -e "$COL_GREEN Installing required components . . . !! $COL_RESET"
sleep 3
apt-get install  -y gcc  build-essential   libstdc++6   unzip    bzip2   sharutils  ccze  libzip-dev  automake1.9  libfile-readbackwards-perl  dnsmasq

# Clearing OLD data files . . .
{
if [ -f $SQUID_DIR/squid.conf ]; then
echo
echo
echo -e "$COL_RED Previous SQUID configuration file found in $SQUID_DIR ! renaming it for backup purpose . . . $COL_RESET"
mv $SQUID_DIR/squid.conf $SQUID_DIR/squid.conf.old
else
echo
echo
echo -e "$COL_GREEN No Previous Squid configuration have been found in $SQUID_DIR. Proceeding further $COL_RESET"
fi
}

# Checking SQUID status if its already running - check by PID
if [ "$pid" == "" ]; then
echo
echo
echo -e "$COL_GREEN No SQUID instance found in memory , so it seems we are good to GO !!! $COL_RESET"
else
echo
echo -e "$COL_RED SQUID is already running, probably you have some previous copy of SQUID installation, Better to stop and remove all previous squid installation !! $COL_RESET"
echo
echo -e "$COL_RED KILLING PREVIOUS SQUID INSTANCE by killall -9 squid command  !! $COL_RESET"
killall -9 squid
sleep 3
fi

# Downloading Squid source package [zaib]
echo
echo
echo -e "$COL_GREEN Downloading SQUID source package in /tmp folder. . . !! $COL_RESET"
sleep 3

# Checking if /tmp folder is previously present or not . . .
{
if [ ! -d "/tmp" ]; then
echo
echo
echo -e "$COL_RED /tmp folder not found, Creating it so all downloads will be placed here  . . . $COL_RESET"
mkdir /tmp
else
echo
echo -e "$COL_GREEN /tmp folder is already present , so no need to create it, Proceeding further . . . $COL_RESET"
fi
}

cd /tmp

# Checking IF LUSCA_HEAD-r14942.tar.gz  installation file have been ALREADY downloaded in /tmp to avoid duplication! [[ JZ .. . .]]
{
if [ -f /tmp/LUSCA_HEAD-r14942.tar.gz ]; then
rm -fr /tmp/LUSCA_HEAD-r14942.tar.gz
fi
}

wget -c http://wifismartzone.com/files/linux_related/lusca/LUSCA_HEAD-r14942.tar.gz

# Checking IF LUSCA_HEAD-r14942 installation file have been downloaded properly. if YEs continue further , otherwise EXIT the script with ERROR ! [[ JZ .. . .]]
{
if [ ! -f /tmp/LUSCA_HEAD-r14942.tar.gz ]; then
echo
echo

echo -e "$COL_RED ERROR: SQUID source code package File could not be download or not found in /tmp/ !! $COL_RESET"
exit 0
fi
}
echo
echo

echo -e "$COL_GREEN Extracting Squid from tar archive. . . !! $COL_RESET"
sleep 3
tar zxvf LUSCA_HEAD-r14942.tar.gz
cd LUSCA_HEAD-r14942/
mkdir /etc/squid

echo -e "$COL_GREEN Executing $squidlabel Compiler [jz] . . . !! $COL_RESET"
echo
cd /tmp/LUSCA_HEAD-r14942
./configure --prefix=/usr --exec_prefix=/usr --bindir=/usr/sbin --sbindir=/usr/sbin --libexecdir=/usr/lib/squid --sysconfdir=/etc/squid --localstatedir=/var/spool/squid --datadir=/usr/share/squid --enable-async-io=24 --with-aufs-threads=24 --with-pthreads --enable-storeio=aufs --enable-linux-netfilter --enable-arp-acl --enable-epoll --enable-removal-policies=heap --with-aio --with-dl --enable-snmp --enable-delay-pools --enable-htcp --enable-cache-digests --disable-unlinkd --enable-large-cache-files --with-large-files --enable-err-languages=English --enable-default-err-language=English --enable-referer-log --with-maxfd=65536
echo
echo -e "$COL_GREEN Executing MAKE and MAKE INSTALL commands . . . !! $COL_RESET"
sleep 3
make
make install
echo
echo
echo -e "$COL_GREEN Creating SQUID LOGS folder and assiging permissions . . . !! $COL_RESET"
sleep 3

# Checking if log folder is previously present or not . . .
{
if [ -d "/var/log/squid" ]; then
echo
echo
echo -e "$COL_GREEN LOGS folder found. No need to create, proceeding Further . . . $COL_RESET"
else
echo
echo
echo -e "$COL_GREEN Creating LOG Folder in /var/log/squid and setting permissions accordingly (to user proxy) $COL_RESET"
mkdir /var/log/squid
fi
}
chown proxy:proxy /var/log/squid
## ** DOWNLOAD SQUID.CONF
echo
echo
echo -e "$COL_GREEN Downloading SQUID.CONF file from $URL and copy it to $SQUID_DIR. . . !! $COL_RESET"
sleep 3

# Checking IF SQUID.CONF File have been ALREADY downloaded in /tmp to avoid duplication! [[ JZ .. . .]]
{
if [ -f /tmp/squid.conf ]; then
rm -fr /tmp/squid.conf
fi
}

cd /tmp
wget $URL/squid.conf

# Checking IF SQUID.CONF file have been downloaded. if YEs continue further , otherwise EXIT the script with ERROR ! [[ JZ .. . .]]
{
if [ ! -f /tmp/squid.conf ]; then
echo
echo
echo -e "$COL_RED ERROR: SQUID.CONF File could not be download or not found in /tmp/ !! $COL_RESET"
exit 0
fi
}
cp -fr squid.conf $SQUID_DIR

## ** DOWNLOAD SQUID.CONF
echo
echo
echo -e "$COL_GREEN Downloading STOREURL.PL file from $URL and copy it to $SQUID_DIR. . . !! $COL_RESET"
sleep 3
cd /tmp

{
if [ -f /tmp/storeurl.txt ]; then
rm -fr /tmp/storeurl.txt
fi
}

wget $URL/storeurl.txt

{
if [ -f /tmp/storeurl.pl ]; then
rm -fr /tmp/storeurl.pl
fi
}

mv storeurl.txt storeurl.pl

# Checking IF STOREURL.PL file have been downloaded. if YEs continue further , otherwise EXIT the script with ERROR ! [[ JZ .. . .]]
{
if [ ! -f /tmp/storeurl.pl ]; then
echo
echo
echo -e "$COL_RED ERROR: STOREURL.PL File could not be download or not found in /tmp/ !! $COL_RESET"
exit 0
fi
}
cp -fr storeurl.pl $SQUID_DIR

echo
echo
echo -e "$COL_GREEN Setting EXECUTE permission for storeurl.pl . . . !! $COL_RESET"
chmod +x $SQUID_DIR/storeurl.pl

# Creating CACHE folders
echo
echo
echo -e "$COL_GREEN Creating CACHE directory in $CACHE_DIR , in this example,I used 5GB for cache for test ,Adjust it accordingly  . . . !! $COL_RESET"
sleep 3

# Checking if /cache-1 folder exist  . . .
{
if [ ! -d "$CACHE_DIR" ]; then
echo
echo
echo -e "$COL_GREEN Creating cache folder in $CACHE_DIR , Default size is 5GB, you should set it accordingly to your requirements  . . . $COL_RESET"
mkdir $CACHE_DIR
chown proxy:proxy $CACHE_DIR
chmod 777 -R $CACHE_DIR
squid -z
else
echo
echo -e "$COL_RED $CACHE_DIR folder already exists , Clearing it before proceeding. . . $COL_RESET"
rm -fr $CACHE_DIR/*
chown proxy:proxy $CACHE_DIR
echo -e "$COL_GREEN $CACHE_DIR Initializing Cache Directories as per the config  . . . $COL_RESET"
echo
squid -z
chmod 777 -R $CACHE_DIR
fi
}

echo
echo
echo -e "$COL_GREEN Adding squid in /etc/rc.local for auto startup . . . !! $COL_RESET"
sed -i '/exit/d' /etc/rc.local
sed -i '/[/usr\/sbin\/squid]/d' /etc/rc.local
echo /usr/sbin/squid >> /etc/rc.local
echo exit 0 >> /etc/rc.local
echo
echo -e "$COL_GREEN Starting SQUID (and adding 10 seconds Pause for proper initialization). . . !! $COL_RESET"
squid
sleep 5

# Checking SQUID status via PID [zaib]
#if [ "$pid" == "" ]; then
#echo
#echo -e "$COL_RED ERROR: UNABLE to start SQUID, try to run with -d1N syntax and see where its showing error !! $COL_RESET"
#else
ps aux |grep squid
echo
echo -e "$COL_GREEN $squidlabel is Running OK with PID number "$pid", no further action required, EXITING  . . .$COL_RESET"
echo
echo To view squid web access activity log, use command
echo -e "$COL_GREEN tail -f /var/log/squid/access.log $COL_RESET"
echo OR
echo -e "$COL_GREEN tail -f /var/log/squid/access.log |ccze $COL_RESET"
echo
echo -e "$COL_GREEN Regard's / Syed Jahanzaib . . . !! $COL_RESET"
echo


ALL DONE.

now execute the script by running

/temp/lusca_install.sh

It will start installation and will show you the progress with all the action its doing [in colored rows, RED color shows error, Green Color shows Ok/INFO].


 

TIP:

To start SQUID Server in Debug mode, to check any errors, use following

squid -d1n

if squid is successfully started , you can see its process via PS command

ps aux |grep squid

as showed in the image below …

squid-start-process

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