# iT issues

Extend Volume Group and increase Logical Volume size + Resize Partition ( STEP BY STEP)

2013-04-02T01:29:00.001-07:00

10 STEPS to add 10GB to LVM

1. Add size to the Virtual Disk in vmware.

***for example let's add 10GB to filesystem*** REBOOT Guest after adding.(If needed)

2.Check if you got free space on physical disk.

[root@localhost ~]# sfdisk -s

/dev/sda: 20031488

3. Space need to be assigned to /dev/sda check whick sda partitions you already have and create a new one:

[root@localhost ~]# ls -al /dev/sda*

brw-rw---- 1 root disk 8, 0 Apr 1 2013 /dev/sda

brw-rw---- 1 root disk 8, 1 Apr 1 2013 /dev/sda1

brw-rw---- 1 root disk 8, 2 Apr 1 2013 /dev/sda2

We create new partition /dev/sda3:

[root@localhost ~]# fdisk /dev/sda

Command (m for help): n

Command action

e extended

p primary partition (1-4)

Partition number (1-4): 3

First cylinder (1306-1697, default 1306): Enter

Using default value 1306

Last cylinder or +size or +sizeM or +sizeK (1306-1697, default 1697): Enter

Using default value 1697

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

***REBOOT***

4. Check if new partition exists:

[root@localhost ~]# ls -al /dev/sda*

brw-rw---- 1 root disk 8, 0 Apr 1 2013 /dev/sda

brw-rw---- 1 root disk 8, 1 Apr 1 2013 /dev/sda1

brw-rw---- 1 root disk 8, 2 Apr 1 2013 /dev/sda2

brw-rw---- 1 root disk 8, 2 Apr 1 2013 /dev/sda3

5. Create a physical volume for LVM:

[root@localhost ~]# pvcreate /dev/sda3

Physical volume "/dev/sda3" successfully created

6. Assign the physical volume to the Volume Group:

[root@localhost ~]# vgextend VolGroup00 /dev/sda3

Volume group "VolGroup00" successfully extended

7. Check if you got free space on Volume Group:

[root@localhost ~]# vgdisplay

--- Volume group ---

VG Name VolGroup00

System ID

Format lvm2

Metadata Areas 2

Metadata Sequence No 5

VG Access read/write

VG Status resizable

MAX LV 0

Cur LV 2

Open LV 2

Max PV 0

Cur PV 2

Act PV 2

VG Size 10.88 GB

PE Size 32.00 MB

Total PE 956

Alloc PE / Size 956 / 10.88 GB

Free PE / Size 97 / 10.1 GB

VG UUID a8rsVw-ACdV-K5aP-uG7l-Nfvq-Wn9i-E36JE5

8. Extend volume:

[root@localhost /]# lvextend -L+10G /dev/VolGroup00/LogVol00

Rounding up size to full physical extent 10 GB

Extending logical volume LogVol00 to 20.88 GB

Logical volume LogVol00 successfully resized

9.Resize FileSystem:

[root@localhost ~]# resize2fs /dev/VolGroup00/LogVol00

resize2fs 1.35 (28-Feb-2004)

/dev/VolGroup00/LogVol00 is mounted; can't resize a mounted filesystem!

Cannot use resize2fs as it is online. Use ext2online instead.

[root@localhost ~]# ext2online /dev/VolGroup00/LogVol00

ext2online v1.1.18 - 2001/03/18 for EXT2FS 0.5b

10. Check if you resize success:

[root@localhost ~]# df -hl

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/VolGroup00-LogVol00

21G 10.2G 9.6G 57% /

/dev/sda1 99M 13M 81M 14% /boot

tmpfs 1006M 0 1006M 0% /dev/shm

That's All. :)

Get mailbox size exchange 2007

2013-01-28T00:43:00.001-08:00

How to get mailbox size in exchange 2007 via PowerShell.
Very simple!
1. If you need to check mailbox size for individual use string bellow:

Get-MailboxStatistics username | ft DisplayName, TotalItemSize, ItemCount
******for more information use get-help Get-MailboxStatistics -full******

2. If you need to get mailbox size for all user use next command:

Get-MailboxStatistics | ft DisplayName, TotalItemSize, ItemCount
******To export output to the file, add > c:\mailboxsize.txt******

FOR EXAMPLE: Get-MailboxStatistics | ft DisplayName, TotalItemSize, ItemCount > c:\mailboxsize.txt

To view more friendly output you can try to use my string:

Get-MailboxStatistics | Sort-Object TotalItemSize -Descending | ft DisplayName,@{label="TotalItemSize(MB)";expression = {$_.TotalItemSize.Value.ToMB()}},ItemCount > c:\mailboxsize.txt

******If the command is not working run this before:******

add-pssnapin Microsoft.Exchange.Management.PowerShell.Admin

From network drive Excel file takes long time to open (Office 2003)

2013-01-20T07:04:00.003-08:00

Office 2003
The problem is with big excel files. When you try to open them from network drives, it takes long time to load.
For fix this issue you will be need to edit your REGISTRY.
Please follow these steps:

Please open Start → Run → and type regedit <Enter>
Navigate to HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Excel\Security\FileValidation
****(If under Excel Key, Security and FileValidation does not exist, create it.)****
Right click on key "FileValidation" New → DWORD
Under Name of DWORD type EnableOnLoad <Enter>
Right clcik on DWORD and choose Modify.
Set Value Data 0
Click <Ok> and exit from editor. Try Open again your EXCEL File.
Should be ok. :)

Active Directory | LDAP - DSQuery user

2012-12-18T04:49:00.000-08:00

DSQuery user

Search for users in active directory.

Syntax
DSQuery User [{StartNode | forestroot | domainroot}] [-o {dn | rdn | samid}] [-scope {subtree | onelevel | base}] [-name Name] [-desc Description] [-upn UPN] [-samid Filter] [-inactive NumberOfWeeks] [-stalepwd NumberOfDays] [-disabled] [{-s Server | -d Domain}] [-u UserName] [-p {Password | *}] [-q] [-r] [-gc] [-limit NumberOfObjects] [{-uc | -uco | -uci}]
Key
StartNode | forestroot | domainroot The node in the console tree where the search starts. forestroot = search using the global catalog.

-o The format used to display the search results.
dn = distinguished name.
rdn = relative distinguished name.
samid = Security Accounts Manager (SAM) account name.

-scope The scope of the search:
subtree = subtree that is rooted at the start node in the console tree.
onelevel = immediate children of the start node only.
base = single object that the start node represents.
If forestroot is the StartNode, then subtree is the only valid scope.

-name Search for user(s) whose name attribute(CN) matches Name.
For example, "br*"

-desc Search for user(s) whose description matches. For example, "contractor*"

-upn Users whose UPN attribute matches UPN

-samid User(s) whose SAM account name matches SAMName

-inactive Users who have been inactive for n number of weeks

-stalepwd Users who have not changed their passwords for n days

-disabled Users with disabled accounts

-s Server to connect to (Default=the domain controller in the logon domain.)

-d Domain to connect to.

-u Username with which the user logs on to a remote server.

-p Password (UserName or Domain\UserName or Username@domain.com)

-q Quiet, suppress all output

-r Recursive search (follow referrals)

-gc Use the AD global catalog during the search.

-limit The maximum number of objects to return, default=100.

-uc Unicode format

-uco Unicode format for output only

-uci Unicode format for input only

Examples

Find all inactive accounts (more than 4 weeks inactive)

C:\> dsquery user -inactive 4

Disable all inactive accounts (more than 4 weeks inactive)

C:\> dsquery user -inactive 4 | dsmod user -disabled yes

Export all active users to .txt file.

C:\> dsquery user -limit 1000 -o rdn -name * > c:\all_users.txt

Export all disabled users to .txt file.

C:\> dsquery user -limit 1000 -o rdn -disabled -name * > c:\all_disabled_users.txt

phpinfo - how to create info file?

2012-06-05T05:23:00.000-07:00

PHP Info

This file can help you to identify which php modules/extensions installed and enabled on your server.
This solution very simple.
Step 1.
Connect to the server through SSH and be sure you have root credentials.
Navigate to public_html directory.
cd /home/websiteuser/public_html
Step 2.
Create file.
nano phpinfo.php
Copy to the file code below:

<?php
phpinfo();
?>
Save and quit from file editor.
Step 3.
Let's check file permissions and owner.

root@server [/home/ websiteuser/public_html]# ls -l | grep phpinfo
-rw------- 1 root root 24 Jun 5 13:34 phpinfo.php

As you see, owner of this file root, because we created this file under user root.
Change ownership:
chown websiteuser.websiteuser phpinfo.php
Change permissions:
chmod 644 phpinfo.php

Step 4.
Browse to this file from browser.
http://websiteuser.com/phpinfo.php

Now you see information page of apache & php. All modules and extensions.

eNj0Y!

WINSXS folder - How to clean up? (Windows 2008 R2 / Windows 7)

2012-06-05T00:31:00.004-07:00

Windows 2008 R2 WINSXS folder

SP1 MUST BE INSTALLLED!

1) Install Service Pack 1

2) Start command prompt

3) Run DISM command: DISM.exe /online /Cleanup-Image /spsuperseded

4) wait few minutes (5-10m)

5) check you disk space!

eNj0Y!

Service stuck in "starting" or "stopping" state.

2012-05-23T01:06:00.000-07:00

Windows Service stucking problem.

Many times, service stuck and we don't know what to do with this issue.
If your server is production and you can't reboot him right now, but you must start or stop the specific service - this post for you.

1. Open command prompt
Let's find your service and identify the PID.
If you already know the name of service, run next command:

sc queryex w32Time

and you will see PID number.
If you don't know name of the service, just run same command without name of the service.

sc queryex

you will see list of all services, just find what you need.

2. Let's kill the service.
Now you know PID of the service and let's kill him!

taskkill /f /pid 1132

That's all.

enJoY!

Windows Server 2008/2008 R2 Administrator's password reset.

2012-05-22T01:01:00.001-07:00

How to reset administrator's password in windows server 2008?

Step 1

a) Insert DVD disk of Windows Server 2008

b) Boot from DVD disk

c) Navigate to "Repair your computer"

d) Choose first option ("Use recovery tools that can........")

e) Choose recovery tool: "Command Prompt"

f) Enter commands like on screenshot below.

g) Click on "Restart"

Step 2
a) Click on utils button

b) Follow the screenshot below

c) Now you can login to server with Administrator withou any problems.

DON'T FORGET TO CHANGE UTILMAN.EXE BACK!!
Go to step 1. and open "Command Prompt"
Enter next commands to change back your utilman.exe
d:
cd windows/system32
move utilman.exe.bak utilman.exe

RESTART

eNj0Y!

mod_deflate configuration. Error playing .swf (flash)

2012-05-16T07:13:00.001-07:00

Apache v2 module Deflate.

Today I stuck on something very strange.

Server whom I worked on it, run's WHM and on one of the websites, I saw follow issue:
Main page running .swf files, I mean flash. When I open the website in google chrome and internet explorer, I see blank grey page while in FIREFOX it works fine.

What is the problem here?

First I checked which modules installed on this server by httpd –l command.

Afterwards, I dug from network something interesting and I tried to resolve this issue. So better Keep it for your self.

On this server installed mod_delflate.

Quote from WIKI:
"mod_deflate is an optional module for the Apache HTTP Server, Apache v2 only. Based on Deflate lossless data compression algorithm that uses a combination of the LZ77 algorithm and Huffman coding.This module provides the DEFLATE output filter that allows output from Apache HTTP server to be compressed before being sent to the client over the network.It also provides a filter for decompressing (inflating, uncompressing) a gzip compressed response body.The mod_deflate module does not have a lower bound for file size, so it attempts to compress files that are too small to benefit from compression. This results in files smaller than approximately 120 bytes becoming larger when processed by mod_deflate"

To resolve this problem, you need to edit /usr/local/apache/conf/includes/post_virtualhost_global.conf

Add SWF extension to "Don't compress images"

Here is my example:

<IfModule mod_deflate.c>
SetOutputFilter DEFLATE
<IfModule mod_setenvif.c>
# Netscape 4.x has some problemsâ€¦
BrowserMatch ^Mozilla/4 gzip-only-text/html
# Netscape 4.06-4.08 have some more problems
BrowserMatch ^Mozilla/4\.0[678] no-gzip
# MSIE masquerades as Netscape, but it is fine
# BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
# NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48
# the above regex wonâ€™t work. You can use the following
# workaround to get the desired effect:
BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
# Donâ€™t compress images
SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png|swf)$ no-gzip dont-vary
</IfModule>
<IfModule mod_headers.c>
# Make sure proxies donâ€™t deliver the wrong content
Header append Vary User-Agent env=!dont-vary
</IfModule>
</IfModule>

Exit from editor, save and restart httpd.
/etc/init.d/httpd restart
Refresh your website, it's should be ok.

eNj0y!

mySQL dump - Import/Export database

2012-05-15T08:07:00.004-07:00

How to import sql dump file to mySQL database?

Connect to the server ssh and run following commands.

Import DB:

cd ~

mysql -u database_user -p yourdatabase_db < restore_db.sql

type your mysql password.

Check if all tables exist:

mysql -u database_user -p

type your mysql password again.

show databases;

connect yourdatabase_db

show tables;

Check if all tables exist.

Export DB:

cd ~

mysqldump -u database_user -p yourdatabase_db > filename.sql

type your mysql password.

ls -l

check if filename.sql exist.

Installation of ConfigServer Security (csf) - cPanel

2012-05-15T07:18:00.003-07:00

Installation and configuration of ConfigServer Security(csf & lfd) - for cPanel

csf installation:

1) Login to WHM and navigate to EasyApache.

2) For perfect installation and working of CSF and your websites, you will need to enable next modules and extensions before starting install it.

Must be enabled:

Ident

Imagemap

Mime Magic

Bz2

Curl

Curlwrappers

Exif

Magic Quotes

Mbregex

Mbstring

Mcrypt

Mysql

PDO

TTF

Tidy

XSL

Zip

For finish installation choose "Save and build" and wait few minutes until you get complete message.

Next steps:

Connect to your server via ssh and run next commands to install csf:

cd ~

wget http://www.configserver.com/free/csf.tgz

tar -xzf csf.tgz

cd csf

sh install.sh

That's all, csf is installed successfully . To configure csf and lfd go to /etc/csf/ directory and open with your favorite editor next files:

cd /etc/csf

vi csf.conf

White list: csf.allow

Black list: csf.deny

To add a specific IP to black list edit csf.deny and add IP Address.

For example:

vi csf.deny

167.XXX.XX.XXX # (too many wrong authentication)

All logs of csf located in /var/logs/lfd.log

To start/stop/restart csf, run from command line /etc/init.d/csf start

Also you can configure it through WHM -> Plugins -> ConfigServer Security & Firewall.

eNj0y!

2012-05-09T00:22:00.001-07:00

Import database error. phpMyAdmin.

"Got a packet bigger than 'max_allowed_packet' bytes"

To resolve this issue, you need to add or edit line in my.cnf file.

cd /etc

vi my.cnf

under [mysqld] add following:

max_allowed_packet=5M

Save and quit from your editor and restart mysql.

/etc/init.d/mysql restart

Try to import db again.

2012-05-08T05:40:00.000-07:00

How to enable error printing in magento?

"There has been an error processing your request

Exception printing is disabled by default for security reasons.

Error log record number: XXXXXXXXXXXX"

Solution:

Via file manager:
First of all, go to your root directory.
public_html/errors
Copy local.xml.sample to local.xml

Via SSH:
cd /home/webUser/public_html/errors
cp local.xml.sample local.xml

Refresh your website.