-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
Am 07.01.2015 um 17:42 schrieb Peter Brodsky:
[...]
The network on which I'd run X2GO is completely private - a mix of perhaps 3 Linux/Windows systems residing on a small submarine. Could not see the wider world even if we wanted to, unless someone figures out how to propagate RF through seawater. So security is not an issue.
[...]
Given all the options... I'll look into upgrading to Mint 17. This is tricky given the application (losing our primary control system computer for any length of time is a very bad thing), but perhaps this is the best long-term solution.
Oh. My. God.
I sure hope you know what you're doing (well, at least http://www.apl.washington.edu/people/profile.php?last_name=Brodsky&first_name=Pete seems to indicate so ;-)) and have some sort of backup/emergency control/failsafe mechanism in place that can make this thing surface automatically if something goes, forgive me the pun, belly-up. Especially if it isn't an AUV but a manned submarine. I'd probably be in for a new pair of pants and underpants if I heard the submarine I'm on is controlled by a plain off-the-shelf computer and not some sophisticated machinery with an trimmed down and hardened RTOS with a watchdog feature and a backup control system based on a different design in place. And that's not because I think X2Go is a crappy piece of software (I'm the X2Go Lead Evangelist after all, I tell people how fantastic X2Go is all the time), it's because I would never trust a regular operating system and off-the-shelf hardware for a task where human lives or some seriously expensive device like an AUV are/is at stake.
That said, if you *do* get X2Go running in that environment, it would make for one heck of an entry on our success stories Wiki-page! So if you do succeed, we'd absolutely love to hear back from you!
So, back to the original problem - what does "xhost" say on your current Mint 15 machines?
And while this isn't exactly X2Go-related - what does the partitioning of these machines look like? If you have unpartitioned disk space, a partition you could spare (that's why I usually have a swap partition large enough to hold a small Linux installation, when changed from swap to ext, on my machines), or you are using LVM and have sufficient free space in there and a boot loader that supports booting from a logical volume, you might want to look into using debootstrap to install a newer version of your operating system into the available space, while your current installation is booted. Or, if debootstrap isn't available for Mint, do a Mint 17 install on another computer, tar the image, transfer it to a new partition/LV on the Mint 15 machine, and see if you can boot into it. That should minimize downtime.
Feel free to contact me off-list for some options/best practices. My company eMail address is kontakt@baur-itcs.de.
I can't claim any previous experience with submarine control systems, but we do have quite a few Linux computers spread across Germany in more or less remote locations (there's even one that, according to the staff that's been on-site once to install the machine, can only be reached via horse drawn sleigh or snowmobile during the wintertime) where we do need to run upgrades with minimum downtime, and having someone on-site to perform the upgrade is usually not an option (and where it is, it tends to get expensive rather quickly), so we've come up with a few things to avoid that.
At the same time - Mike I'll take you up on your offer to build a Debian package for me. I am familiar with Git, of course, but have not built .deb packages.
Usually, this is the place where I would point out that we do have commercial support offerings for customers with needs like that one (I'm sure someone would usually offer to build you packages even for Mint 15 if you paid for it) - but in your case, I would actually have to check back with our developers if anyone is willing to offer commercial support or if they're all too worried about liability issues in case a bug in the code causes you to lose control over the AUV/submarine ... drowned customers aren't happy customers, if you know what I mean. ;-)
- -Stefan
BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32)
iQEcBAEBAgAGBQJUrZKnAAoJEG7d9BjNvlEZiEYH/3S3aaTmFVyTKZUQuAAJf0cB brL3ZCFQU1wNut19+kVNa9/fBt6Fh2j2LOZoHEIgXAxD6FCqmxXa7cmC31CY5TKK R7qo9By48ugvfqdkcaayXnN/L8PbRKrpdNpQYKjx1VHUkUwtCRWs72MzbV8BQyyk v7K2Sm2aSopKVBV7qM7RZrQ+l1h676P0cJM14RtJzJnTTKbvO8Xzwc2DQYa3QESF wW07aEyauCXg5+RDkcRqmi6wM1q2YwZ/GXIVCVNKQqvadwhTj9hQR8ieUMINN8YL KPwN8HscoOHuaMPIalxSqux18Nndxo313U9JI1ACx5SGTxQiVQRjk5XabhXl/A4= =VBXi -----END PGP SIGNATURE-----