As an alternative to installing vCenter Server on a Windows machine, since vSphere 5.0, Vmware provide VMware vCenter Server Appliance (vCSA). The vCenter Server Appliance is a preconfigured Linux-based virtual machine optimized for running vCenter Server and associated services. On stand alone vSphere host, we can use vSphere client directly to connect to the vSphere…
While accessing VMware vCenter Server Appliance (vCSA), sometimes we find the error message ” Failed to connect to VMware Lookup Service https://vcenterhost:7444/lookupservice/sdk – SSL certificate verification failed” . If this message occurs , we can not log into vCSA . This message usually occurs when we change the IP or hostname of the vCenter without…
This morning one of our customer contact me due to an error message on his website. Instead of displaying blog content, his website display an error message : “Bandwidth limit exceeded ” . This message usually appears when the website bandwidth exceeds predetermined limit . Bandwidth usage is calculated from the total of incoming and…
When downloading large files such as Linux ISO files or backup files, I usually use the default browser download application or use wget. Unfortunately, in some case, I prefer to do download using torrent because it may faster than using wget. On Windows system, I usually use Bitorrent or uTorrent and on Linux-GUI based, Transmission is…
Previous Article : Zimbra Tips : Installing & Configuring PolicyD on Zimbra 8 Zimbra Tips : Securing PolicyD Web Admin After installing, configuring and securing PolicyD, we can apply some policy rule on PolicyD, such as setting up maximum number of emails that can be sent by any account in a certain time interval. For example, each…
WHM ( Web Hosting Management ) as the name implies is usually used as a management software for hosting . In addition to hosting management , WHM is also often used as a DNS Server/Name Server. DNS Servermanagement can lead the possibility of name server IP address changes; for example due to server migration into…
On previous article : PolicyD and Rate Limit Sending Message Implementation on Zimbra 8, we’ve installing and configuring PolicyD to prevent spam message to go to outside network (or to came into internal network). Zimbra based mail server without PolicyD can be blacklisted due to spam message sent by compromised account (account got hacked by attacker)….
From PolicyD website : Policyd v2 (codenamed “cluebringer”) is a multi-platform policy server for popular MTAs. This policy daemon is designed mostly for large scale mail hosting environments. The main goal is to implement as many spam combating and email compliance features as possible while at the same time maintaining the portability, stability and performance…
VMware vSphere 5.5 has been released on November 2013 and contains some improvement compared to previous version . If you wish to try to implement VMware vSphere version 5.5, these are some precautions especially for vSphere free edition. vSphere Client Version Windows vSphere Client version 5.5 cannot be installed on Windows XP or Windows 2003…
WHAT IS NESTED INSTALL? A feature on VMware vSphere that makes the learning process and system simulation a lot easier is the ability to do nested install. Nested install means that vSphere can be installed on top of vSphere. If the processor and RAM are quite enough, all simulated systems in the real data center can be…