Re: [Discuss] KVM, virt-manager, and CentOS7
Dan Ritter writes: >> Only mostly true. I know a handful of people who successfully changed >> their usernames. It's rare, and only done in extreme circumstances. >> But it *can* be done. > > Interesting. Without violating privacy, can you describe what > sort of thing qualifies as extreme circumstances? The two cases I can think about offhand included targeted harrassment and an inadvertantly offensive name. > -dsr- -derek -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH warl...@mit.eduPGP key available ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
On 2/9/17, ma...@mohawksoft.com wrote:
> Actually, 62^8, [a-zA-Z0-9]{8}
Nope. By convention, email addresses are not case sensitive. Making
them case sensitive would break user expectations and create enormous
amounts of pointless frustration.
--
John Abreau / Executive Director, Boston Linux & Unix
Email: abre...@gmail.com / WWW http://www.abreau.net / PGP-Key-ID 0x920063C6
PGP-Key-Fingerprint A5AD 6BE1 FEFE 8E4F 5C23 C2D0 E885 E17C 9200 63C6
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Re: [Discuss] KVM, virt-manager, and CentOS7
> On Thu, Feb 09, 2017 at 11:40:28AM -0500, ma...@mohawksoft.com wrote:
>> Here's the problem with all this.
>>
>> 8 characters for a name. Yes, in a hypothetical sense you have
>> 2.183401056×10^14 possible passwords if you use 8 ascii alpha/numeric
>> characters with no punctuation characters, but the vast majority of that
>> space are random strings not suitable for nicknames or meaningful
>> identifiers. For instance, I can't see that any remaining meaningful
>> permutations of "john smith" could possibly be left. How many email
>> addresses do they assign a year? How many back-logged names did they
>> create at first?
>
> Let's call it 26^8 or so: 208 billion.
Actually, 62^8, [a-zA-Z0-9]{8}
>
> The real problem is the lack of human meaning and the fact that
> names are usually longer than 8 characters.
>
> How many do they assign a year? Roughly a freshman class worth,
> plus maybe a hundred more? So 1200ish.
>
> John Smith is out of luck. So is Elizabeth Jones. But still, they probably
> have better options than "bb30...@binghamton.edu" -- the login I was
> assigned so many years go, can still remember, and have absolutely no
> use for.
>
> -dsr-
>
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Re: [Discuss] KVM, virt-manager, and CentOS7
On Thu, Feb 09, 2017 at 11:40:28AM -0500, ma...@mohawksoft.com wrote: > Here's the problem with all this. > > 8 characters for a name. Yes, in a hypothetical sense you have > 2.183401056×10^14 possible passwords if you use 8 ascii alpha/numeric > characters with no punctuation characters, but the vast majority of that > space are random strings not suitable for nicknames or meaningful > identifiers. For instance, I can't see that any remaining meaningful > permutations of "john smith" could possibly be left. How many email > addresses do they assign a year? How many back-logged names did they > create at first? Let's call it 26^8 or so: 208 billion. The real problem is the lack of human meaning and the fact that names are usually longer than 8 characters. How many do they assign a year? Roughly a freshman class worth, plus maybe a hundred more? So 1200ish. John Smith is out of luck. So is Elizabeth Jones. But still, they probably have better options than "bb30...@binghamton.edu" -- the login I was assigned so many years go, can still remember, and have absolutely no use for. -dsr- ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
Hi, On Thu, February 9, 2017 11:40 am, ma...@mohawksoft.com wrote: > Here's the problem with all this. > > 8 characters for a name. Yes, in a hypothetical sense you have > 2.183401056×10^14 possible passwords if you use 8 ascii alpha/numeric > characters with no punctuation characters, but the vast majority of that > space are random strings not suitable for nicknames or meaningful > identifiers. For instance, I can't see that any remaining meaningful > permutations of "john smith" could possibly be left. How many email > addresses do they assign a year? How many back-logged names did they > create at first? > > When an alum dies, does their email address become available? Generally @mit.edu addresses are "recovered" approximately 1-2 years after they leave MIT. There are exceptions for certain classes of people whose accounts remain "sponsored". It's unclear what happens if a sponsored account owner passes. Then there are "alum.mit.edu" accounts, which is MIT's "Email Forwarding for Life", which allows more than 8 characters, so there's really no issue. -derek > > >> Dan Ritter writes: >> >>> On Wed, Feb 08, 2017 at 10:24:54AM -0500, Derek Atkins wrote: Eric Chadbourne writes: > Off topic, warl...@mit.edu, is the best email ever. Thanks. I've had it since 1989. >>> >>> MIT trivia: once you have a username, you can't change it. >>> >>> http://mitadmissions.org/blogs/entry/dont-screw-up-your-username >> >> Only mostly true. I know a handful of people who successfully changed >> their usernames. It's rare, and only done in extreme circumstances. >> But it *can* be done. >> >>> -dsr- >> >> -derek >> >> -- >>Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory >>Member, MIT Student Information Processing Board (SIPB) >>URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH >>warl...@mit.eduPGP key available >> ___ >> Discuss mailing list >> Discuss@blu.org >> http://lists.blu.org/mailman/listinfo/discuss >> > > > -- Derek Atkins 617-623-3745 de...@ihtfp.com www.ihtfp.com Computer and Internet Security Consultant ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
Here's the problem with all this. 8 characters for a name. Yes, in a hypothetical sense you have 2.183401056×10^14 possible passwords if you use 8 ascii alpha/numeric characters with no punctuation characters, but the vast majority of that space are random strings not suitable for nicknames or meaningful identifiers. For instance, I can't see that any remaining meaningful permutations of "john smith" could possibly be left. How many email addresses do they assign a year? How many back-logged names did they create at first? When an alum dies, does their email address become available? > Dan Ritter writes: > >> On Wed, Feb 08, 2017 at 10:24:54AM -0500, Derek Atkins wrote: >>> Eric Chadbourne writes: >>> >>> > Off topic, warl...@mit.edu, is the best email ever. >>> >>> Thanks. I've had it since 1989. >> >> MIT trivia: once you have a username, you can't change it. >> >> http://mitadmissions.org/blogs/entry/dont-screw-up-your-username > > Only mostly true. I know a handful of people who successfully changed > their usernames. It's rare, and only done in extreme circumstances. > But it *can* be done. > >> -dsr- > > -derek > > -- >Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory >Member, MIT Student Information Processing Board (SIPB) >URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH >warl...@mit.eduPGP key available > ___ > Discuss mailing list > Discuss@blu.org > http://lists.blu.org/mailman/listinfo/discuss > ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
On Thu, Feb 09, 2017 at 10:27:05AM -0500, Derek Atkins wrote: > Dan Ritter writes: > > > On Wed, Feb 08, 2017 at 10:24:54AM -0500, Derek Atkins wrote: > >> Eric Chadbourne writes: > >> > >> > Off topic, warl...@mit.edu, is the best email ever. > >> > >> Thanks. I've had it since 1989. > > > > MIT trivia: once you have a username, you can't change it. > > > > http://mitadmissions.org/blogs/entry/dont-screw-up-your-username > > Only mostly true. I know a handful of people who successfully changed > their usernames. It's rare, and only done in extreme circumstances. > But it *can* be done. Interesting. Without violating privacy, can you describe what sort of thing qualifies as extreme circumstances? -dsr- ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
Dan Ritter writes: > On Wed, Feb 08, 2017 at 10:24:54AM -0500, Derek Atkins wrote: >> Eric Chadbourne writes: >> >> > Off topic, warl...@mit.edu, is the best email ever. >> >> Thanks. I've had it since 1989. > > MIT trivia: once you have a username, you can't change it. > > http://mitadmissions.org/blogs/entry/dont-screw-up-your-username Only mostly true. I know a handful of people who successfully changed their usernames. It's rare, and only done in extreme circumstances. But it *can* be done. > -dsr- -derek -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH warl...@mit.eduPGP key available ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
Dan Ritter writes: > On Wed, Feb 08, 2017 at 10:24:54AM -0500, Derek Atkins wrote: >> Eric Chadbourne writes: >> >> > Off topic, warl...@mit.edu, is the best email ever. >> >> Thanks. I've had it since 1989. > > MIT trivia: once you have a username, you can't change it. > > http://mitadmissions.org/blogs/entry/dont-screw-up-your-username Only mostly true. I know a handful of people who successfully changed their usernames. It's rare, and only done in extreme circumstances. But it *can* be done. > -dsr- -derek -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH warl...@mit.eduPGP key available ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
On Wed, Feb 08, 2017 at 10:24:54AM -0500, Derek Atkins wrote: > Eric Chadbourne writes: > > > Off topic, warl...@mit.edu, is the best email ever. > > Thanks. I've had it since 1989. MIT trivia: once you have a username, you can't change it. http://mitadmissions.org/blogs/entry/dont-screw-up-your-username -dsr- ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
On 2/8/2017 8:20 AM, ma...@mohawksoft.com wrote: > Networking between VMs didn't work or was a $$ feature. Snapshots > and disk compaction not available. Sharing CPUs during idle. The next step > up is vShpere and overt, which are so comprehensive that you are buried > with features and have to, more or less, commit to using their strategy. Have you tried Xen? It does all of the things you list except maybe compaction and that's only because Xen usually isn't deployed with virtual disk images. But it can be done if it is required. -- Rich P. ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
Hi, ma...@mohawksoft.com writes: > I tried overt on a machine that was already hosting VMs. Needless to say, > I had to painstakingly restore my KVM environment to get them back. Yeah, ovirt definitely needs a clean system. > The thing that I like about KVM and libvirt is that it works within a > standard Linux system. I've tried vmware, parallels, and a number of other Ovirt does, too. Started with regular (clean) CentOS 7.x install and followed the instructions to get it installed. If this isn't a "regular Linux system" I don't know what is. Note that ovirt is built on top of KVM and libvirt, but yes, it does expect to be self-contained. > vm environments, and they just didn't have the features to get the job > done. Networking between VMs didn't work or was a $$ feature. Snapshots > and disk compaction not available. Sharing CPUs during idle. The next step > up is vShpere and overt, which are so comprehensive that you are buried > with features and have to, more or less, commit to using their strategy. You don't have to use all the features, but yes, you do have to live by the ovirt methodology. > Sure, if you want to run a large scale vm warehouse, something like overt > is for you. If you want to host a small-ish number of VMs, or use VMs to > develop/test software for different environments and operating systems, > KVM with libvirt is much easier to set-up and use. I'm running ovirt on a single hardware system; I migrated (am migrating) off vmware-server-2. I've got over a dozen VMs running, but the main feature I needed is a web-based remote console access (so my remote users don't need shell access in order to access VM consoles). This is the main feature I wanted and ovirt provides (as did vmware-server). I don't think you can get that level of remote access from KVM + libvirt directly. -derek -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH warl...@mit.eduPGP key available ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
Eric Chadbourne writes: > Off topic, warl...@mit.edu, is the best email ever. Thanks. I've had it since 1989. > Eric -derek -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH warl...@mit.eduPGP key available ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
I tried overt on a machine that was already hosting VMs. Needless to say, I had to painstakingly restore my KVM environment to get them back. The thing that I like about KVM and libvirt is that it works within a standard Linux system. I've tried vmware, parallels, and a number of other vm environments, and they just didn't have the features to get the job done. Networking between VMs didn't work or was a $$ feature. Snapshots and disk compaction not available. Sharing CPUs during idle. The next step up is vShpere and overt, which are so comprehensive that you are buried with features and have to, more or less, commit to using their strategy. Sure, if you want to run a large scale vm warehouse, something like overt is for you. If you want to host a small-ish number of VMs, or use VMs to develop/test software for different environments and operating systems, KVM with libvirt is much easier to set-up and use. > I've been playing with oVirt 4.0.6 on EL7.3 and I've almost migrated all > my VMs from my old VMware infrastructure. So far I'm enjoying it. I > can't say it was painless to set up -- ovirt has a lot of moving > parts -- but once I figured it all out it's been pretty smooth sailing. > > -derek > > Jerry Feldman writes: > >> A lot of this has been available in Fedora for several years. >> Unfortunately, the GUI support had been lacking where vmWare and >> VirtualBox >> provided a much easier way to do it. >> >> On Mon, Feb 6, 2017 at 2:04 PM, wrote: >> >>> Has anyone played with virt-manager and KVM on CentOS 7 lately? >>> >>> I was surprised by a lot of the things that were difficult or at least >>> arcane in previous releases are fairly trivial now. >>> >>> For instance, a few years ago, bridged networking was a fairly poorly >>> documented procedure of setting up a bridge, setting up the virtual >>> lan, >>> virtual adapters, etc. Now, its just a setting on the network adapter >>> when >>> you add it. >>> >>> I think I can easily step away from VMWare. >>> >>> ___ >>> Discuss mailing list >>> Discuss@blu.org >>> http://lists.blu.org/mailman/listinfo/discuss >>> > > -- >Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory >Member, MIT Student Information Processing Board (SIPB) >URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH >warl...@mit.eduPGP key available > ___ > Discuss mailing list > Discuss@blu.org > http://lists.blu.org/mailman/listinfo/discuss > ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
Off topic, warl...@mit.edu, is the best email ever. Eric ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
I've been playing with oVirt 4.0.6 on EL7.3 and I've almost migrated all my VMs from my old VMware infrastructure. So far I'm enjoying it. I can't say it was painless to set up -- ovirt has a lot of moving parts -- but once I figured it all out it's been pretty smooth sailing. -derek Jerry Feldman writes: > A lot of this has been available in Fedora for several years. > Unfortunately, the GUI support had been lacking where vmWare and VirtualBox > provided a much easier way to do it. > > On Mon, Feb 6, 2017 at 2:04 PM, wrote: > >> Has anyone played with virt-manager and KVM on CentOS 7 lately? >> >> I was surprised by a lot of the things that were difficult or at least >> arcane in previous releases are fairly trivial now. >> >> For instance, a few years ago, bridged networking was a fairly poorly >> documented procedure of setting up a bridge, setting up the virtual lan, >> virtual adapters, etc. Now, its just a setting on the network adapter when >> you add it. >> >> I think I can easily step away from VMWare. >> >> ___ >> Discuss mailing list >> Discuss@blu.org >> http://lists.blu.org/mailman/listinfo/discuss >> -- Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory Member, MIT Student Information Processing Board (SIPB) URL: http://web.mit.edu/warlord/PP-ASEL-IA N1NWH warl...@mit.eduPGP key available ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
Re: [Discuss] KVM, virt-manager, and CentOS7
A lot of this has been available in Fedora for several years. Unfortunately, the GUI support had been lacking where vmWare and VirtualBox provided a much easier way to do it. On Mon, Feb 6, 2017 at 2:04 PM, wrote: > Has anyone played with virt-manager and KVM on CentOS 7 lately? > > I was surprised by a lot of the things that were difficult or at least > arcane in previous releases are fairly trivial now. > > For instance, a few years ago, bridged networking was a fairly poorly > documented procedure of setting up a bridge, setting up the virtual lan, > virtual adapters, etc. Now, its just a setting on the network adapter when > you add it. > > I think I can easily step away from VMWare. > > ___ > Discuss mailing list > Discuss@blu.org > http://lists.blu.org/mailman/listinfo/discuss > -- -- Jerry Feldman Boston Linux and Unix PGP key id: B7F14F2F Key fingerprint: D937 A424 4836 E052 2E1B 8DC6 24D7 000F B7F1 4F2F ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
[Discuss] KVM, virt-manager, and CentOS7
Has anyone played with virt-manager and KVM on CentOS 7 lately? I was surprised by a lot of the things that were difficult or at least arcane in previous releases are fairly trivial now. For instance, a few years ago, bridged networking was a fairly poorly documented procedure of setting up a bridge, setting up the virtual lan, virtual adapters, etc. Now, its just a setting on the network adapter when you add it. I think I can easily step away from VMWare. ___ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss
