Mac : Unable to negotiate with x.x.x.x port 22: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1

With the latest macOS Sierra 10.12 release, you might have observed issue connecting to servers or network devices running SSH. Please note that this article does not necessary apply or macOS, but any running OS with the latest OpenSSH v7. Because of the latest OpenSSH version, some older (legacy) encryption algorithm have been removed from… Read More »

Linux : How to setup client/server NFS on SuSE

This post will cover the complete installation and setup of a NFS client and server on SuSE Linux. By default, the system include the NFS client but not the server. First of all, make sure that NFS traffic is allowed if you are running any firewall on the client/server machine. You can achieve this through… Read More »

VMware : Basic ESXi commands

You will find below some basic and useful commands to operate a ESXi hypervisor from the command line. Put the host in maintenance mode (or leave maintenance mode) :

List all VMs registered on the host :

Verify the power state of a specific VM :

Power on a specific VM :… Read More »

Web : Updating ownCloud to version 8.1.9 was unsuccessful

Using ownCloud repo and encountered the following error while upgrading to version 8.1.9? Updating ownCloud to version 8.1.9, this may take a while. Set log level to debug – current level: “Warning” Turned on maintenance mode Checked database schema update Checked database schema update for apps Updated database Exception: App can’t be installed because it… Read More »

Category: Web

VMware : vCenter version and build number history

Here is a list below of version and build number for VMware vCenter Server product. I have no credit over it, it has been taken from virten.net Web site. Name Version Release Build Installer Version vCenter Server 6.0.0 Update 2 6.0 U2 2016-03-15 3634793 3634788 VMware vCenter Server 6.0 Update 1b 6.0 U1b 2016-01-7 3339083 3343019… Read More »

Windows : How to change the Exchange MailStore database path

By default, Microsoft Exchange Server will place the MailStore database in the installation folder as followed : C:\Program Files\Micros oft\Exchange Server\V15\Mailbox\Mailbox Database 0000000000\Mailbox Database 0000000000.edb It may be suitable for small scale setup, however you may want to change it to a different path for various reasons when come to medium or large scale setup…… Read More »

Linux : How to enable NTP loopfilter statistics on RHEL/CentOS?

You may end up at some point where you need detailed statistics about time synchronization on your Linux machine. To achieve that, simply do the following : 1. Edit your NTP configuration file :

2. Append the following parameters :

3. Restart the NTP daemon :