> -----Original Message----- > From: David Nalley [mailto:da...@gnsa.us] > Sent: Wednesday, October 17, 2012 9:21 AM > To: cloudstack-dev@incubator.apache.org > Subject: Re: [Doc] Missing hardware requirements in KVM install section? > > I doubt I am adding clarity, but comments are inline. > > > On Wed, Oct 17, 2012 at 12:12 PM, Jessica Tomechak > <jessica.tomec...@gmail.com> wrote: > > Just noticed that in the KVM installation section, which was not just > > converted to XML but substantially rewritten by a contributor, the > > following hardware requirements from the older guide were omitted. > Can > > anyone please confirm whether these still apply to Apache CloudStack > 4.0? > > > > Hosts must be certified as compatible with the selected operating > system. > > For example, see the RHEL Hardware Compatibility Guide at > > https://hardware.redhat.com/. > > > Since you can use this in virtually any modern KVM system (Ubuntu, > Fedora, in addition to RHEL etc) the above would seem to be pointless.
Yes, above requirements are for "enterprise" like customers, it's not valid for users just want to try CloudStack. > > > > > > Must support HVM (Intel-VT or AMD-V enabled). > > That's a KVM requirement. KVM won't work without this. > > > > > > Within a single cluster, the hosts must be homogenous. The CPUs must > be of > > the same type, count, and feature flags. > > This is true - might also add network layout as that is more > important that feature flag and count of CPUs IMO. > > > > > Within a single cluster, the hosts must be of the same kernel version. > For > > example, if one host is RHEL6 64 bit, they must all be RHEL6 64 bit. > > > > 64-bit x86 CPU (more cores results in better performance) > > The above wording is horrendously unclear and confusing at best. > RHEL6 always ships with 2.6.32 - but there are different builds and it > makes me question whether you mean: > > I must be using the same major version of RHEL and match arch > OR > I must be using the same minor version of RHEL and match arch > OR > I must be using the same kernel release and arch on all machines > (e.g.: kernel-2.6.32-279.5.2) The same libvirt version and the same base line OS and same arch is enough. Basically, don't mix Ubuntu and Centos into the same cluster, don't mix Centos 6.1 and 6.2 into the same cluster, don't mix x64 and 32bit OS into the same cluster. And all of these requirements coming from one simple question: can you migrate the VM from one host to another host? If the migration works for you, or you don't care about VM migration, then we should let you add whatever hosts into the same cluster. > > > > > Hardware virtualization support required > > You said this already > > > > > 4 GB of memory > > Where did this number come from? Agree, it's invalid requirement. > > > > > 36 GB of local disk > > Why is this needed? Where did this number come from? What if they are > all pxe-booted diskless KVM nodes (we have people who have done that) Agree, it's invalid requirement. > > > > > > At least 1 NIC > > > > > > > Statically allocated IP Address > > I thought Edison said we deprecated the need for this many months ago. Yes, when you install cloudstack, especially, kvm agent, there is no such requirement any more. But there is a potential issue, if host are using DHCP, need to make sure the DHCP server will not conflict with CloudStack's virtual router.
