Browsing articles in "Linux"
Jan
25
2017

How to Configure dom0 Memory in XenServer 6.1 and Later for performance

How to Configure dom0 Memory in XenServer 6.1 and Later for performance Objective This article describes how to configure Control Domain (dom0) memory in XenServer 6.1.0 and later for better performance. Customers running more than 50 Virtual Machines (VM) per XenServer host might wish to increase the memory allocated to dom0. The following section provides instructions to […]

Jan
25
2017

XenServer Scalabilitiy – Performance Tuning

XenServer Scalabilitiy – Performance Tuning In field we noticed performance issues within a particular VDI environment in terms of the amount of virtual machines the costumer was able to start on their XenServer hosts, as well as a bad performance within the user-sessions. In that particular environment it was not possible to have more than 60-65 Machines operated […]

Jan
20
2016

bind9 zone example.com/IN: loading from master file /home/admin/conf/dns/example.com.db failed: permission denied

Error in BIND9: bind9 zone example.com/IN: loading from master file /home/admin/conf/dns/example.com.db failed: permission denied I was configuring a VESTACP on a Ubuntu server and had a lot of headache while trying to load the DNS zones to response to the Internet. The zones have been configured correctly, the ports were open on the firewall, but the […]

Jan
18
2016

Install TomCat 8 on Ubuntu/Debian

Apache tomcat is a Java based application server released by the Apache Software Foundation. It is a web server and a servlet container for Java web applications. What’s new in Tomcat 8 Apache Tomcat 8 is aligned with Java EE 7. In addition to supporting updated versions of the Java EE specifications,Tomcat 8 includes a […]

Jan
12
2016

FIX: ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken

I have noticed on my system a problem while restarting exim4 MTA system. The message below was showing as a PANICLOG. Doing some research I found that simply deleting the file and restaring the service fixed the problem. Therefore I have used the commands listed below to remove the LOGIFLE and RESTART exim4. [email protected]:~# tail […]

Jan
12
2016

How to install Hyper-V Integration Services (ICs) in Ubuntu 12.04 LTS or 14.04 LTS

Hyper-V Integration Services (ICs) on Ubuntu servers – by Mauro C. Fileto Getting tools to help manage infrastructure is vital to save time and get things done efficiently. That said, I have selected a topic very useful for windows server Hyper-V infrastructure managers, in order to install Hyper-V Integration Services on Linux machines. After you […]

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