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The Crucial Blog - Archive

August 11, 2009

How to install dig on Gentoo

To install the dig command on , run the following command:

emerge bind-tools

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Filed under: Uncategorized by — aaron @ 8:57 pm


August 11, 2009

How to install dig on Ubuntu or Debian

To install the dig command on or  run the following:

apt-get install dnsutils

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Filed under: Uncategorized by — aaron @ 8:24 pm


August 11, 2009

How to install dig on CentOS, Fedora, or Redhat

To install the dig command on , Fedora, or Redhat run the following:

install bind-utils

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Filed under: Uncategorized by — aaron @ 8:22 pm


June 26, 2009

How to setup logging on tftp on Linux

Set up logging by opening /etc/xinetd.d/tftp and adding the -v (verbose) option to server_args, and then you can tail /var/log/messages to see the results.

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Filed under: Uncategorized by — aaron @ 8:03 am


June 23, 2009

How to install Webmin on Ubuntu 9.04 by using Ubuntu (.deb) Packages

Before downloading or install the .deb Webmin package run the following commands, the 1st command will install the tool wget for download packages from the internet,

sudo apt-get install wget

Before installing any packages it’s always a good idea to get a full up to date list of packages. This can be done by running the follow command,

sudo apt-get update

The next set of commands will install some perl-related libraries required by webmin,

sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl libmd5-perl

If you run into any issues running the above perl relatd commands, try running the following again,

sudo apt-get update

Now we can download the Webmin .deb package,

wget http://prdownloads.sourceforge.net/webadmin/webmin_1.490_all.deb

Install the package with dpkg, not Aptitude,

sudo dpkg -i webmin_1.490_all.deb

To access your successful install of webmin, goto https://[serverIP]:10000

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(2) Comments

Filed under: Uncategorized by — ross @ 12:46 am


June 4, 2009

PHP 5.2.9 Compile with mcrypt failing on CentOS 5

If you are getting the following message while trying to compile 5.2.9 with mcrypt:

/usr/bin/ld: cannot find -lltdl
collect2: ld returned 1 exit status
make: *** [libphp5.la] Error 1

Then try this:

install libtool-ltdl-devel

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No Comments

Filed under: Uncategorized by — aaron @ 12:50 am


June 3, 2009

Compiling PHP 5 on CentOS 5 64 Bit configure: error: mysql configure failed.

If you are receiving the following error while trying to compile 5 on or RHEL 5 64bit:

configure: error: mysql configure failed. Please check config.log for more information.

And in the config.log you see:

/usr/bin/ld: skipping incompatible /usr/lib/mysql/libmysqlclient.so when searching for -lmysqlclient

Then add the following to your configure line:

–libdir=/usr/lib64 –with-libdir=lib64

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(2) Comments

Filed under: Uncategorized by — aaron @ 6:19 pm


June 2, 2009

How to install VMware Tools (ESX, ESXi, VMware Server) on CentOS 5 (linux)

1. In select the option to Install/Upgrade Tools (in , you can do this by right clicking on the VM -> Guest -> Install/Upgrade Tools. This will insert the CD into the drive on your VM.

2. On the VM, do the following to install kernel source:

install gcc gcc-c++ kernel-devel -y
ln –s /usr/src/kernels/[your kernel version] /usr/src/

3. Mount the CD, and copy the Vmware Tools installation file:

mkdir /mnt/cdrom
mount /dev/cdrom /mnt/cdrom
cd /mnt/cdrom
cp VMwareTools-[version].tar.gz /root
cd /root
umount /mnt/cdrom
tar zxf VMwareTools-[version].tar.gz

4. Install VMware Tools:

cd /root/vmware-tools-distrib
./vmware-install.pl

5. For a standard install, just say yes to all the options.

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(1) Comment

Filed under: Uncategorized by — aaron @ 6:10 pm


May 31, 2009

How to Upgrade VMware ESXi 3.5 to ESXi 4.0

To upgrade from 3.5 to VMware 4.0 you first need to install the VMware vSphere Host Update Utility:

  1. VMware ESXI 4 upgrading release, and extract the file ESXi-4.0.0-0.4.164009-upgrade-release.zip\VMware-viclient.vib\data.tar.gz\data.tar\.\4.0.0\client\VMware-viclient.exe
  2. Run the executable to install the VMware vSphere Client 4.0, be sure to select the Install vSphere Host Update Utility 4.0.
  3. Run the vSphere Host Update Utility 4.0.
  4. Select the server you wish to upgrade, then click Upgrade Host.
  5. Select the VMware ESXi 4.0 Upgrade file (for example: ESXi-4.0.0-0.4.164009-upgrade-release.zip)
  6. Run VMware vSphere client, login to the host you wish to upgrade. Right click on the server, and click Enter Maintenance Mode.
  7. Return back to the vSphere Host Update Utility 4.0, and Accept the agreement.
  8. Enter host login details, and click next.
  9. Once this has been completed, go back to VMware vSphere client, and Exit Maintenance Mode.
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No Comments

Filed under: Uncategorized by — aaron @ 4:59 pm


May 22, 2009

How to find out which processes are using RAM in Linux?

An easy quick way to find out which processes are using RAM in is the following:

top -c

Then

Shift + M

This will list the top processes using the most RAM.

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Filed under: Uncategorized by — aaron @ 12:46 am




     

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