Laptops, Headless Servers and KVMs? 397
Administration of headless machines can be a pain, and working on multiple machines can also be a bit of a bother. KVM boxes solve some of the problem, but sometimes finding a keyboard and a monitor to lug around to these machines is most of the problem. Is there a portable solution that might solve both of these problems? Wouldn't it be nice to carry around a specialized laptop that could act as both a portable display and input device? Does something like this currently exist?
KJH1138 asks: "I am looking for a hardware/software combination that would allow me to use my laptop as the KVM for a headless server before, during, and after OS configuration. What I have in mind would be a server KVM/USB to laptop serial/USB connection, with software on the laptop to provide KVM control of the headless device, with or without an OS. A PC Anywhere or Linux equivalent wouldn't work since they would require the headless system to already have an installed OS. I would prefer a Linux-based solution on the laptop, but would settle for a Windows option. I simply don't want the clutter of a keyboard and monitor."
PGillingwater has a similar desire: "Like many regular readers, sometimes I need to visit a customer site to diagnose equipment, like firewalls or routers. More systems these days use VGA output and keyboard input, which means having to scrounge a display and keyboard, then looking for a spare power socket in the machine room, which is not always easy! I am wondering if anyone has seen a laptop which also allows VGA input and keyboard output. This would be a cool idea. Use it as a normal laptop most of the time, then hijack the video and keyboard to connect to other systems when you need it."
What we do... (Score:4, Interesting)
If we can't ssh to computers or telnet to equipment (switches, etc) we have an OpenBSD laptop which we can use as a console via a serial cable and kermit. That's assuming a unixish system, though. If you're only running Windows on servers then why not install TightVNC and control it from your desktop? Assuming the machine is still on the LAN, of course. If it's not you'll probably just reboot it anyhow.
Re:What we do... (Score:2)
Re:What we do... (Score:4, Informative)
Re:What we do... (Score:3, Informative)
1. set the console to the serial via boot flags, so the kernel will dump its boot to serial.
2. Use a BIOS that contains the ability to pipe its POST to serial. HP/Compaq servers have this ability, and im sure others do as well.
3. Cable them all to a serial console machine. Blade enclosures do this automatically, and work quite well.
Essentially, you have a serial console with equivelent ability of being in front of the machine, at least in the unix/linux
AAARGGGHHH (Score:3, Funny)
A: "Buy a Mac!"P? Only on slashdot. Jesus.
Re:What we do... (Score:3, Informative)
Re:What we do... (Score:4, Informative)
Re:What we do... (Score:3, Informative)
We've been rebuilding our infrastructure, and discovered the Dell 2650's have a built in "Dell Remote Access Console" which actually gives VNC access to whatevers on the screen. I can powercycle remotely, update BIOS settings, etc. Very cool. I still have a KVM solution in place, but use it less and less.
Re:What we do... (Score:3, Informative)
Re:What we do... (Score:4, Informative)
Re:What we do... (Score:3, Insightful)
$900 is chump change for a tool that gets work done efficiently. If you're looking for a way to get something done with the least expenditure of dollars, I suggest staying out of corporate data centers all together. They'll make you cry.
Re:What we do... (grub, REVISED) (Score:2)
Re:What we do... (Score:2)
Re:RTFA (Score:5, Insightful)
No, typical Slashdot is a bunch of kids answering a serious question before ever setting foot in an enterprise environment.
Two choices: first, an IP KVM installed in each rack. But you still have to address the power switch and media. Another poster mentioned PXE booting. It works, but takes effort to build all the different images you want to have handy, and what do you do for a hung box 1,000 miles away? Or once you address the power question, the NIC is bad?
Second: IBM (and others) offer remote systems management cards that not only give you full remote KVM on the server the card is installed in, but they also give you access to the system power and screen captures of blue screens that may have occured before the server rebooted itself to recover. They can also present virtual floppy and CD-ROM drives to their host servers. Finally, if you don't want to run 10/100 and do IP allocations for each management card, you can daisy chain up to 24 servers together over RS-485 and use any one of them as a gateway to the IP network.
One IP address. Full remote KVM access to up to 24 servers at a time. Access to the system power. Access to screenshots of blue screens that may have tripped a reboot. Full hardware and software alert forwarding directly handled by the gateway card or passed on to enterprise systems management environments via numerous methods. Virtual floppy and CD-ROM drives. If you still absolutely insist on going onsite to the box, you can sit at a desk in the corner and get an IP.
For christ's sake be a professional, dammit! I love all these answers about using distros configured to put the console on a serial tty when the submitter clearly described needing to be in the box before the POST splash is up. Another year of not having to worry about my job if this is the competition.
Re:RTFA (Score:3, Informative)
Wow (Score:4, Funny)
Er, w00t?
Re:Wow (Score:2)
Re:Wow (Score:2)
Re:Wow (Score:4, Insightful)
Thanks very much for your malformed links to
Pardon my ignorince but ... (Score:3, Insightful)
Try talking up with a _good_ admin who shows you in _real_live_ the 1 & 2's.
KVM switches are handy for non-server hardware misplaced in the network architecture, but any serious stuff has some or all of the above list.
"Real" servers are not that expensive by the way, especially compared to the price of IP-KVM.
Re:Pardon my ignorince but ... (Score:2)
The one time I can think of needing a keyboard/monitor would be for install and if something really really bad was going on in the hardware.
Re:Pardon my ignorince but ... (Score:2, Interesting)
Place the machine in the rack
Write down the mac of the management NIC
Kick the machine on with WOL
Configure the bios and scsi via web
The machine installs via PXE boot (you got that on your site don't you?)
Configure it
Test it
Configure it
Test it
(repeat as long as needed)
Then take it out of your test rack and place in the "Live" rack (what you don't have a test site?!?)
Re:Pardon my ignorince but ... (Score:2)
Bingo. Sometimes the shit does hit the fan, and there are times when a direct connection to a server is needed. LOM or serial stuff is OK. I use my Mac for that with a serial to USB adaptor, but some "real" servers do not have LOM or serial connections and do require a display and a keyboard.
I too would like to see some solutions for those servers that do require
Re:Pardon my ignorince but ... (Score:2)
Yes but if things are that bad, odds are pretty good that you will have to pull the server and put it on the bench. Frankly for install I was thinking of installing the OS. All software installs should be do able wit
Re:Pardon my ignorince but ... (Score:3, Informative)
Being able to use a laptop as in place of a "crash cart" would save many admins many headaches.
It would also need to support connecting as a USB keyboard for my use though.
Sounds like a perfect application for a specialized PC Card or external USB 2.0 device,
Re:Pardon my ignorince but ... (Score:3, Informative)
IP based Console Server (via serial connection) to all Unix hosts.
IP based KVM's with flatpanel monitor/keyboard trays in each rack to all hosts.
Remote desktop for all the windows hosts
SSH on all the Unix hosts
Switches, routers, etc are all accessed via ssh. (some with a small single port "console server", if they don't natively support ssh).
Basically the goal should be not to find the *best* way, but as many ways as you can, so when one avenue breaks down, you h
Re:Pardon my ignorince but ... (Score:2)
Re:Pardon my ignorince but ... (Score:2)
Kindly show me a version of a Windows server that by default installs Terminal Services in Remote Administration mode, because last time I checked, neither 2000 server nor 2003 server did.
I don't think I've EVER been able to remotely admin a Windows server unless it just happened to be a Terminal Server anyway. I'm actually about ten times more likely to find they have a copy of pcAnywhere running than Microsoft's own remote administration tools.
- JoeShmoe
.
Re:Pardon my ignorince but ... (Score:2)
Not to mention...try running SFC from Remote Desktop sometime. You'll get a nice polite message saying it can only be run from the console...namely the actualy keyboard/monitor of the server itself. Now we are back to KVM solutions. Thanks Microsoft!
- JoeShmoe
.
Re:Pardon my ignorince but ... (Score:2, Informative)
But it can be turned on easily by Group Policy - this really handy thing where you can configure settings for a whole group of computers incredibly quickly in Active Directory.
It could easily be set as such (ie: turned on) for your domain if you chose - just edit the Domain Default policy in Active Directory Users and Computers. (In our case, just one OU for Servers.)
Re:Pardon my ignorince but ... (Score:3, Interesting)
Just an additional comment.
Assume you have more than one nice server, at least two machines with ethernet connections, and all with bioses that understand the serial port (and yes, you can find x86 bioses that will do this):
Consider daisy-chaining the machines together by serial port:
Now, when a server has problems, its always possible to connect through ethernet to the server 'one hop down' from it, then co
Re:Pardon my ignorince but ... (Score:2)
Or, in my other world, this would be handy when I forgot to enable that snazzy new serial port BIOS on my home server which isn't a "real" server anyway.
Or, when a friend asks you to look at a server you know nothing about and he doesn't have a monitor handy...
If I had a laptop that had keyboard-in and video-in
Re:Pardon my ignorince but ... (Score:5, Informative)
Serial consoles are great, but not for PCs. In a big DC, you will not have the root password to every server. You will be logging in via some special authentication mechanism like SecurID and then doing sudo su (or just ssh public keys). So getting a login prompt is not going to be helpful; you'll have to reboot the server. On real Unix hardware, you can usually do this by sending a hardware break and typing "reboot" (or similar). This will work even if the OS is crashed or thrashing or whatever. On a PC, no dice, because it's purely the software which handles the serial connection. So you have to hit the reset button, which will probably solve whatever issue was going on anyway (while simultaneously destroying any in-memory logs of what the cause might have been).
For us, in our DC with about 5000 servers, the worst servers to manage are actually the real Unix hardware, but that's only because we have just the one laptop (and because the Unix servers are all disasters held together by spit and baling wire, but that's another story). Also the laptop sucks ass and keeps breaking because it's 6 years old and has been dropped several times. That's something else to keep in mind if you're looking for a laptop-based solution: People Will Drop It. Not only that, if they have to step away from the server for a second, the laptop will get left on the floor, where some unwary soul will step on it or wheel a crash cart over it. Laptops are expensive, even secondhand. A crummy 15" CRT and keyboard will set you back $100, if that, and if they're on a cart that can be wheeled around they won't get dropped (often). Just make sure to buy monitors with fully-removable video and power cords, so when someone wheels the cart off without unplugging it you won't wreck the server's video connector and pull the PDC out of the rack.
Clients don't always have server hardware (Score:2)
You obviously work in a large IT department where you have the resources or authority to purchase actual server hardware. In smaller businesses, and for the technician
Re:Pardon my ignorince but ... (Score:2)
I agree with you completely. You know, Linux is nice and fast and all but I feel like I've gone back in time 15 years to my PC tech support days when I have to lug a full-size keyboard, monitor, and mouse around just to reboot a box that's borked and won't network properly. Unix had it right back in the 70s with serial ports, why can't any PC BIOS manufacturers make a decent BIOS that only uses serial output? A
use avocent (Score:3, Informative)
Re:use avocent (Score:2)
Avocent's SwitchView IP [avocent.com]
Re:use avocent (Score:2)
Solutions: (Score:2)
1) Invent a wireless KVM or
2) Make really long cables
We have two KVMs daisy-chained with 18 or so machines on them. Works fine. So just scale that up by making it wireless. Sit comfortably in one spot, and go!
Re:Solutions: (Score:2)
One machine connects via VGA. The other machine connect thru a VGA-to-DVI cable.
Re:Solutions: (Score:2)
If there IS a solution, let me know. (Score:2)
Re:If there IS a solution, let me know. (Score:3, Informative)
Chair
With
Wheels
k, bye bye
Re:If there IS a solution, let me know. (Score:2)
You, sir, missed your calling. You should have been a UNIX sysadmin....
Now, where ARE my sandals and suspenders, anyway?
ObRealContent:
But seriously, this is why real computers, at least servers, typically have serial console ability hard-wired in and drop back to it when running headless or without a keyboard. Sun has had this for YEARS, and lot
Re:If there IS a solution, let me know. (Score:2)
Lather. Rinse. Repeat.
Wimp (Score:5, Funny)
Yes. Real techs just stick their tongue in the video port and jiggle a paperclip in the keyboard port. Only amateurs need dedicated hardware.
IP KVM card (Score:2, Informative)
http://www.peppercon.com/eric2.html
Re:IP KVM card (Score:2)
You mean like... (Score:3)
Not for windows servers. For that my experience shows that the easiest solution is a monitor tied to a chair.
[a chair you ask? Well standard carts generally don't have the maneuverability (or small footprint) required for server rooms.]
Serial Killer (Score:2)
These "colo carts" were no good with the few Sun servers we had, since the default Sun console is a serial port. So if you wanted to console-in to a Sun server, you had to f
Maybe (Score:2, Informative)
It is rack mounted, but it would be easier than to carry a monitor, keyboard, and KVM seperately.
Almost Perfect (Score:2)
It is rack mounted, but it would be easier than to carry a monitor, keyboard, and KVM seperately.
The only thing that that is lacking from the request is that it is not battery powered and thus requires a power outlet, however since it's all in one nice unit that could be carried from site to site if your customer doesn't have one already installed. I have a feeling it's a little heavier than a laptop, but I'm sure it's still lighter than a CRT monitor. You
Google is your friend (Score:3, Informative)
Re:Google is your friend (Score:2)
VNC? (Score:2, Interesting)
Works great.
HP Servers (Score:2)
Re:HP Servers (Score:2)
VGA2USB (Score:5, Insightful)
Sure enough, a company makes just such a device, the
It does nothing for your mouse and keyboard needs, but this (I think) solves the biggest issue of your question.
Re:VGA2USB (Score:2)
Cheaper Method (Score:2, Informative)
If your laptop has Composite Video capture already, then you don't need to get a USB or PCMCIA capture card..
Have you considered... (Score:5, Informative)
Re:Have you considered... (Score:2)
In a perfect world... (Score:2)
I've been watching the KVM-over-IP market for the last several years, and it looks like recently they've dropped from $3,000 down to under $500. I'm seriously tempted to get one of these. The ones I've been looking at, because we run only Linux, have been ones that are accessable via VNC, and allow you to control the keyboard, mouse, and read the display, even in te
I used a small LCD screen (Score:3, Insightful)
The LCD screen was so small and light it was a pleasure to carry around (1024x768 native resolution). The long wires allowed me to sit comfortably wherever I was most comfortable.
Vmware!! (Score:2)
You can attach to a vmware console over TCP/IP via their client and get full control over virtual server, reboot, enter BIOS, mount BOOT CD ISO for rescue and so on.
It saved me a lot of time.
VGA to TV converter with ... (Score:3, Interesting)
Then get one of those flex keyboards that roll up. http://www.compusa.com/products/product_info.asp?
VMWare (Score:2)
1 box.
Lots of VMs.
Accessible from anywhere over IP no matter what OS each VM is running and no matter what state the "machine" is in, be it hung on boot, crashed, or fiddling with BIOS. All doable from a remote location.
Re:VMWare (Score:2)
Re:VMWare (Score:2)
This kind of thing may already be available in the higher end products (ESX/GSX), but since I'm stuck with the lower-end stuff, I have to make do with being impressed by WS.
KVM switches (Score:2)
Another good solution are the built-in consoles - 1U tall, you can pull it out as a drawer from the rack and open it as a laptop. It has a full size keyboard, some pointing device (trackball or trackpad) and a built-in LCD. Like this for example: rack console kit [www.ciao.de]
So, no need to lug a laptop around. Not to
Re:KVM switches (Score:2)
FYI, w
HP48G telnet (Score:2)
This was nice for when X locked up (which it did occasionally) or for when the network was down or if I didn't have another box to get network access from -- I could still telnet in through serial, kill X, and be good as new.
The only hitch was that most distros didn't come with the serial port enabled for this in the first place.
Nobody seems to be answering the question ~ (Score:3, Insightful)
I believe what he is asking - which I'm interested in as well - is a laptop where the key/mouse/mon can be independently connected to an external device - there are laptops out now that can play dvd movies without booting an OS - this would be a similar thing. This would be even more useful if you could use a keyb shortcut (kvm-stylee) to switch back and forth between your freshly rooted server and the laptops OS. I want one.
Re:Nobody seems to be answering the question ~ (Score:2)
If you think it can just be added to existing laptops for about $8, you're right, but it won't be, because most of the buyers of those laptops don't want the feature, and the manufacturer would prefer to keep the $8 x number of units for itself.
P.S. Don't verb nouns if doing so would conflict with already extant verbs, idiot.
Laptop with USB KVM capability would rock (Score:2)
A la
Synergy ? (Score:2, Interesting)
Maybe not exactly what you're looking for but this excellent peace of GPL software lets you use only one mouse+keyboard pair to interact with multiple computer+screen pairs, may they be running Mac OS, Windows and Linux/Unix.
Addendum to this question (Score:2)
But there are occassions I want to take the Mini Mac with me and bring along a monitor as well. So I was thinking about some of those portable LCDs targeting the
Lilliput touchscreen LCD monitor (Score:2)
Lilliput Touchscreen LCD display [allcam.biz]
It has a VGA input and a USB connector. So far, I've only used the VGA input, and used a separate keyboard. In principle, you can install the appropriate driver (it's available for Linux!), plug in the USB cable and use the touchscreen cabability instead of mouse/keyboard.
This thing's great. It really beats carting around a full-sized monitor.
The real value (Score:2)
1) Very compact and portable form factor display, keyboard and mouse. A huge bonus if its an actual laptop, too.
2) When the laptop is obsolete as a computer, it's still a usable display, keyboard and mouse combination.
I've tossed more laptops than I care to remember, but would keep them all (well, at least the 800x600 ones) if they could be used as displays at the very least.
It's called the Internet (Score:2)
Need something to install the OS in the first place? That device is called a 'schlepper' -- you pay him some money, and he installs the OS on the machine for you.
Hell, I've never even visited the state that my server resides in.
I've always wanted this too (Score:2)
Ah well, wishful thinking I suppose. There's no compa
As the number of boxes we managed increased... (Score:2)
My favoured solution is currently a laptop and SSH. Plus A KVM monitor,keyboard/mouse left in the data center with a few critical machines on and with a spare very long (2-3Meters) KVM cable to connect to any machines stuck on bios/boot screens or with failing SSH.
Obviously this only works if you are Unix/Linux only. Remote KVMs would be useful though, can anyone recommend a secure one that isn't hideously expensive?
Laptop (Score:2)
I have been talking about this exact thing for a long time. All it would need is a laptop with a built in kvm. One press you are controlling the laptop, one press you are controlling the external pc from the laptop.
Someone build this for me please.
Call Dell or HP (Score:2)
Supermicro., IBM, Sun, Dell solutions (Score:2)
Remote admin is something you need to consider BEFORE you buy your hardware.
An ideal solution would be able to
- work when the machine has hung (usually means a separate IP for admin, thru a single ethernet port)
- access/change bios
- access to temperatures/fan speeds while OS is running
- mount CDs for reinstalling an OS, even remotely
IBM, Sun & Dell have rather expensive solutions in their servers. Admin i
I am going to stretch my imagination here... (Score:2)
If only there were some sort of mechanism, like a serial port, over which you could run a console through which control might be exercised. But then, I am going out on a limb here.
Wow, someone tell this guy the war is over (sorta) (Score:2)
Throughout the article this guy keeps saying "bad guys" like he was fighting for something tangible and sacred. Get some perspective man, you're booting cheaters from a game server, not saving babies in 'Nam.
How about: Tampering with software and servers owned or used by the Army is cyber crime
Oooooh, oh no! I'm not
Re:Wow, someone tell this guy the war is over (sor (Score:2)
Think different (Score:2)
Looking outside x86 however sparc64 would suit you, if there is no keyboard in the system it defaults to terminal via the first serial port (or whatever you set in OpenFirmware)
This may be true of other OpenFirmware users (Only Apple springs to mind currently)
I did have a point to this post, i think it may h
ServView (Score:2)
Everybody is missing the point. (Score:3, Insightful)
Having said that, the poster that indicated earlier that anything only 20 geeks want will cost $10,000 is right, so I'm not holding my breath for the PCMCIA card.
I would say, though, that it would be really nice if someone could come up with some cheap hardware with keyboard/mouse/VGA connectors that protocol converted to VNC APIs over IP over ethernet. There's a lot of people that could use a cheap KVM over IP solution like this...
I guess you are a windoze admin (Score:4, Insightful)
Isn't it great the problems needing a GUI just to do simple admin tasks creates?
Two tools together (Score:4, Informative)
Doesn't meet requirements (Score:2)
If you know of a way to ru
Re:Sounds a bit excessive (Score:2, Informative)
A cheap 14" LCD panel and a mini usb keyboard with pointer built into it. There you go. Get some VGA and USB extension cables and leave them in the server so you don't have to crawl around behind it to plug them in.
It ain't like rocket science, and it's much cheaper than all the esoteric KVM over IP type of shit everyone else is selling.
Re:Multi-platform KVMing? (Score:2)
Re:Multi-platform KVMing? (Score:2)
As others have pointed out, you can buy USB-to-PS/2 adapters, but I bought the Belkin OmniView SOHO 4-port KVM with PS/2, USB, audio and VGA [belkin.com]. You plug a PS/2 keyboard and mouse into it and you connect it up to PCs or Macs with PS/2 or USB cables. It also switches your microphone and audio out. It's pretty handy. It comes in two or four port versions.
modparent up (Score:2)
Re:RemotelyAnywhere (For Windows Systems) (Score:2)
I've been using RemotelyAnywhere [remotelyanywhere.com] on my windows machines
From Question:
A PC Anywhere or Linux equivalent wouldn't work since they would require the headless system to already have an installed OS.
Re:PDA's? (Score:2)
Try it yourself, set your display res to 320x200 and try and read your windows event log.