vWorld – Oude Doesburgseweg 89C – 6901 HH Zevenaar – info@vworld.nl – Kantoor: 0316-798037 – Because it’s a virtual world!
In this simple blog post, I’m going to explain how easy it is to expand/resize your CentOS Linux VM disk. By default, an Azure Linux VM comes with a 30 GB boot disk. In this step, we’re going to expand this disk to 64 GB. Step 1 Shut down your Azure VM (or skip this […]
Lees verder… from Resize the VM disk size of an Azure Linux CentOS 7 VM
Recently I ran into an issue on a project I’m working on. The customer has a Linux virtual machine running on Azure with a large data disk (20 TB). I knew – but forgot to remember – that Azure Backup doesn’t support disks larger then 4 TB (more info here). The specific drive is used […]
Lees verder… from How to backup Linux VM’s with large data disks (>4 TB)
In this blogpost I shall describe how you add an extra data disk to your Linux VM running on Azure. Step 1 Add a new disk to your Linux VM using the Azure Portal Choose Add data disk to add an extra data disk and choose create data disk. For demo purposes I quickly entered […]
Lees verder… from How to add a data disk to your Azure Linux VM the right way
Recently I ran into a problem with PFSense. After rebooting I noticed several errors during the boot proces. I was able to boot into the single user environment and after some investigating I found a solution that worked for me.
|
1 2 |
pkg-static update -f pkg-static upgrade -f |
After rebooting I noticed that there were some (file) lockes and I had to […]
Lees verder… from How to fix PFSense libssl.so.8 not found error(s)
Did you notice that your timezone was not correct? This is how to configure the right timezone :
|
1 |
timedatectl set-timezone Europe/Amsterdam |
You can check your date/time settings :
|
1 |
timedatectl |
The timedatectl is installed by default, but when you did a minimal install you can fix this with the following command :
|
1 |
sudo apt-get install systemd-services |
Tip : You can check out […]
When you install a package using dpkg and somehow you kill the proces, you may encouter the above error. There is an easy solution for that : Remove the lock files using the following command :
|
1 2 3 4 5 |
sudo rm /var/lib/apt/lists/lock sudo rm /var/cache/apt/archives/lock cd /var/lib/dpkg/updates sudo rm * sudo apt-get update |
[…]
Use the following command to install PAR2 support on your Linux host :
|
1 |
sudo apt-get install par |
If your device has more than 1 core available, you can significantly speed up verification and repair by using all cores in your system. Installing these multicore versions of Par2 is easy for many platforms :
|
1 2 3 |
sudo add-apt-repository ppa:jcfp/sab-addons sudo apt-get update sudo apt-get install par2-tbb |
[…]
For testing purposes I’m using PFsense to allow my clients to PXE boot using the FOG TFTP server. This are the settings which are working : [table id=2 /] You can find these settings in the PFsense DHCP service menu. […]
Lees verder… from How to configure PFsense to PXE boot using FOGProject
In this post I’m going to describe the simple steps to install the latest release of the Plesk software on CentOS. First make sure you are root:
|
1 |
sudo -s |
Make sure you start with a clean starting point, remove existing instances of Apache, MySql, Cyrus and PHP:
|
1 2 3 4 |
yum remove http* yum remove php* yum remove cyrus* yum remove mysql* |
Make sure your CentOS distribution is fully patched: […]
Many people are running Linux in a virtual machine on Azure. But what if a Linux virtual machine refuses to start? Go to the Azure portal and open the virtual machine properties. First check out the CPU, network and disk utilization. Is CPU constantly peaking at 100%? Then you know that you must investigate that […]
Lees verder… from How to troubleshoot your Linux VM running on Microsoft Azure
Making backups of virtual machines running on Azure using snapshot technology is a nice feature. But sometimes you don’t want to revert the whole snapshot but only want to restore a single file. Now this is possible. It uses the same backup/Snapshot technology you probably are already using. Open the virtual machine properties in the […]
For my work I often deploy Linux VM’s. I use Lynis for checking my system for security isssues en baseline(s). Lynis is a security auditing tool for UNIX derivatives like Linux, macOS, BSD, Solaris, AIX, and others. It performs an in-depth security scan. Extensive reports in HTML and TXT are delivered. The company behind Linus […]
Lees verder… from Top tip: Linux security & auditing tool Lynis
In this post I will describe how to configure the basic Linux firewall IPTABLES. Using iptables you can easily protect your server from intruders. Nowadays many people are hosting virtual machines on Linux (for example for hosting purposes). Ofcourse you can configure an external firewall, but you can also use the internal firewall (the Linux […]
Lees verder… from How to protect your Linux server using iptables
Today a customer requested to upgrade the amount of memory on their XenServers. This is how you easily can determine which memory modules are being used. Ofcourse you can use ILO, but then you only see the size and location but not the specific type of (memory) module : This is how you can identify […]
Some days ago a friend of mine asked me how it’s possible to update the PHP version to the latest stable build. Updating using the regular (web) interface didn’t seem to work… This is how you do that :
|
1 2 3 |
add-apt-repository ppa:onderj/php5 apt-get update apt-get install php5 |
[stextbox id=”warning”]After this you don’t have to reboot your server.[/stextbox] […]
After installing CentOs you might notice that the eth0 network card interface isn’t working in some cases. Here is how to fix this : You need to edit (nano) two files : /etc/sysconfig/network (check networking=0) /etc/sysconfig/network-scripts/ifcfg-eth0 (set IP address and boot=on) After this you can install VMware tools also. (Check my other post) Technorati Tags: […]
This is how you install VMware Tools on CentOs :
|
1 2 3 4 5 6 |
mkdir /media/cdrom mount /dev/cdrom /media/cdrom cd /tmp tar –xf /media/cdrom/VM* cd vm* ./vmware-install.pl |
Now reboot your system
|
1 |
rm -r /tmp/vmware-tools-distrib |
Technorati Tags: Linux,VMware […]
