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Showing posts from January, 2013

ESXi losing logs after reboot

We recently upgraded from ESX 4.1 (FAT) to ESXi 5 and we were used to having the logs stored on the local disk so that we can do diagnostics when things go wrong. As ESXi can run stateless the logging is stored in memory during runtime by default and if the host was to freeze or you issued a reboot then all the logs would disappear. VMware gives you options to either create a syslog server to have the host sending information to it, or like me our servers have plenty of local disk space so why not use them to store the logs like before. Here are the steps to quickly setup using vCentre client:   Log on to vcenter and locate your host or use the vCentre client to connect directly to the host.   Create a new directory on your local datastore e.g. “logs”  Go to “advanced settings”   Select “ScratchConfig” and change “ScratchConfig.ConfiguredScratchLocation” to your new path. e.g. "/vmfs/volumes/vhyp002/logs", Click “OK" If you go back a

Office 365 User Group London event 24th January 2013

Most people will now be thinking should we start using cloud services? One of the most obvious service to move would be email. Why email you may ask, well it is probably the most established services out on the internet. Want to know what benefits it brings to your users and if it is worth moving? Then come along to the Office 365 UK user group in London on the 24th January from 6:30pm - 9pm. Nuno will be doing a presentation on his experience and view of Microsoft's offering of Office 365. See you there http://o365.co.uk/event/office-365-uk-user-group-london-24th-jan-2013/

London VMUG 24th January 2013

The first VMUG for 2013 in London is on the Thursday 24th January 2013 and is a whole day event. Looking at the agenda it appears to be based around end user computing (EUC). A few interesting ones would be "VMware HA deep dive" and "vCD 5.1 and VXLAN". Hope to see some of you there. Here is the agenda Nutanix Presentation - Alan Campbell and Rob Tribe, Nutanix Your Journey to the Post-PC Era - Brian Gammage, VMware EUC Panel with VDI Gurus - Brian Gammage, VMware Deploying vCD 5.1 and VXLAN - Dan Senior VMware HA Deep Dive - Eric Sloof Zerto Presentation – How One Company Averted Disaster from the VMworld 2012 - Joshua Stenhouse, Zerto 10Zig Presentation – Thin Client Technology at Its Peak - James Broughton, 10Zig Big Data for the Uninitiated - Stu Radnidge Update – What’s Here and What’s Coming Soon - Spencer Pitts, VMware EUC VMware Certification Update - Gregg Robertson vCAC - Kim Raynard, VMware Networking and Lunch Onward Drinks at Pavilion En

550 5.7.1 Unable to relay

Due to a change in our Call Logging system (the application the Help Desk uses to log IT service calls for users), we had to allow it to send e-mails as coming from the Help Desk mailbox to external users.   So, I created a new receive connector just for the servers hosting that application and allowed for anonymous users to use it as the application doesn’t support authenticated SMTP...     This grants permissions to the anonymous account but it still doesn’t give the application relay permissions. If you try to relay using this receive connector, you will get the following SMTP error message: 550 5.7.1 Unable to relay The ACL that controls relay is the ms-Exch-SMTP-Accept-Any-Recipient . To add this ACL to this receive connector, we have to use Exchange Management Shell: Get-ReceiveConnector "Infra" | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "ms-Exch-SMTP-Accept-Any-Recipient" Please, don’t forget to ke

RVTools - GUI App displaying VM details

I was shown RVTools by a colleague of mine which is a Windows GUI tool to display information about your VMs and ESX host. It is a very lightweight app and provides most of the important information you normally like to know like snapshots, powerstate and CD -ROM connection states. Although you can use powershell to get this information it can sometimes be a pain to get it working !!. So if you need something quick and easy to use then this is the tool. http://www.robware.net/

SPF Records

To configure Sender ID filtering in Exchange, you must first understand the Sender Policy Framework (SPF) records.   SPF records allows software to identify messages that are or are not authorized to use the domain name in the SMTP HELO and MAIL FROM commands, based on information published in a sender policy of the domain owner. Forged return paths are common in e-mail spam. SPF is defined in RFC 4408.   SPF records work with sender ID filtering to stop malicious e-mails. The SPF record is a piece of information on the DNS servers that is required by sender ID filtering to determine whether the e-mail message was sent by an authorized server for the specified domain. In simple terms, an SPF record is a listing of authorized SMTP servers for a particular domain or set of domains in the DNS database.   Publishing an SPF record in the public DNS allows the recipient SMTP servers to perform a reverse MAIL Exchanger (MX) lookup by cross-referencing the IP addresses of the auth

Veeam B&R Free NFR licences

Veeam have be renown for their backup software for VMware virtual infrastructure. Now if you are VMware or Microsoft certified then you can apply for a 2 CPU socket NFR (no for resale) licence to test drive the full version of the product. Here is the link to the blog post from veeam to apply for one  http://www.veeam.com/nfr/free-nfr-license

vCheck by Alan Renouf

As you would be aware there is some much information that is held on vCenter. Each morning you could end up spending a few hours to make sure nothing out of the ordinary happened last night or over the weekend. Well thanks to Alan Renouf who started a powershell script that you could schedule to run which would check for the main issues that could go wrong. I have used this script back sometime ago but now it has changed to be more modular so that you can include/exclude checks. Most of the checks are done as separate plugins which sure make it more easier for people to contribute. Head over to Alan Renouf website and give the script a go: http://www.virtu-al.net/vcheck-pluginsheaders/vcheck/