I’m a personal user of Contabo’s cloud services, and I’ve been delighted with them. They offer a wide range of services to choose from, including VPS, dedicated servers, and cloud storage. I’m currently using a VPS to host my personal website and email, and I have also used their Storage VPS and object storage in the past. I have had no issue with my VPS over the years. I’ve also been impressed with Contabo’s customer support....
GNS3 Sourceforge account provides an OVA image ready to run gns3-server for those who want to use Cisco IOS on Unix images . However, at the time of this writing, the gns3-server version is outdated (1.3.3). The client must have the same version as the server to be able to connect to it. Here is how you can update the gns3-server inside the image. Note that you need Internet access for the update....
I have had a strange issue lately with Windows servers on VMware vSphere 5.1 hosts. Throughput of TCP connections between some virtual machines were very very slow, barely 10 mbit/s . The behavior was easily reproducible : just start an iperf connection between a Windows Server 2008 and a Windows 2012 server, and you get 10 mbit/s . Moving both virtual machines on the same ESXi host, or on different hosts, did not change anything....
A few months ago, I was unable to login on my vCSA. At that time, I thought it ws a glitch, I rebooted (didn’t fix the issue) and changed the password of the users, which fixed the issue. Recently, I had the same issue. I concluded it could not be a glitch anymore and decided to search for root cause. The reason given by Veeam was “username or password incorrect”, which was wrong....
I had to configure a bunch of ESXi 5.1 servers with LSI 9240-4i hardware RAID controllers the other day. This RAID controller is perfectly supported in ESXi 5.1 but it lacks the monitoring features. To have these, you need to install first the LSI SMIS package on your ESXi hosts. With this, the ESXi server acts as a proxy to query the RAID controller from the network. Then you need a Windows computer running LSI MegaRaid Storage Manager (MSM) software....
It has been explained many times over the internet, so I won’t cover that. One thing you have to pay attention to is, if you run snmptt as a daemon, be sure that it has the right to write to Nagios FIFO. On my Debian system, I had to run snmptt as nagios user. Then, when you convert the MIBs to snmptt.conf file format, sometimes it will fail because the MIB is not RFC compliant....
Update: I just saw that since April 25th, SQL Server 2012 and Windows Server 2012 are supported by VMware vCenter 5.1U1 . All information is available here : http://blogs.vmware.com/vsphere/2013/04/vmware-vcenter-server-5-1-update-1-released.html Original November 21th 2012: While it is working with the SSO service, vCenter and vCloud Director, it just doesn’t work with Update Manager service. Well, at least with the SQL Server native client v11. Then Update Manager service just doesn’t start and throws an unhelpful 1067 Error....
Just some thoughts and things I’ve done. The hardware is the following: the Microserver itself, 2x 4GB DDR3, one 16GB USB flash drive, some 2TB SATA hard drives, Logitech S-150 USB speakers, and a GT520 HDMI+DVI graphic card. Installation on USB flash drive. There’s an USB port on the motherboard, so I plugged a 16GB USB flash drive and installed Ubuntu to it. The filesystem is ext4 because I trust it a lot more than btrfs and because it seems it’s quite good on a flash drive (source , it’s old, I know)....
So, like me, you want to have redundancy for your virtual machine network. For my lab setup, I use a refurbished Cisco router 3825 with two gigabit interfaces, two Procurve 2810-24G and a small server with 4 gigabit interfaces for the ESXi. You just have to: team the NICs on the ESXi (use src-mac + beacon probing), use port-channel on the Cisco router and src-mac too, configure the switches exactly the same way as if there wasn’t any redundancy, add a link between the two switches and configure it to transmit the VLANs you need, don’t forget to add STP on the switches and put a high priority (low number) on the link between the switches....
Vos machines virtuelles sont lentes, vous pensez que le CPU n’est pas en cause parce que vous avez une utilisation faible des pCPU ? Regardez-y à deux fois, il se pourrait que vos VM attendent du pCPU disponible! Pour vérifier que vos VM n’attendent pas pour avoir du CPU, allez dans l’onglet performance, advanced, CPU. Dans chart options, choisissez “Ready (ms)”. C’est bien joli, mais ça ne vous dit pas encore grand chose....