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Warning: the ECDSA host key for '...' differs from the key for the IP address '...'
by Mark Rogers 06 Dec '19

06 Dec '19

I have just received: Warning: the ECDSA host key for '...' differs from the key for the IP address '...' .. when trying to SSH to a web server I manage. I expect these kind of warnings if I've changed IPs, or reinstalled SSH, or reinstalled the OS, but I'm not aware of having done anything that could provoke this warning. Googling just gives me endless ways to fix the problem by removing the cached key, but I'm finding precious little advice on what to do if the warning has no obvious cause. Suggestions? -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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2600 meeting at 18:00 on Friday the 6th December.
by Viperfang 03 Dec '19

03 Dec '19

Quick heads up about this months Norwich 2600 meeting, more info at http://www.norwich2600.co.uk

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rsync
by Phil Thane 18 Nov '19

18 Nov '19

I'm sure this is trivial but I don't know where to look... My wife's PC uses Grsync (gui for rsync) to backup to my server. I've recently put a new HDD in the server and re-installed everything, including a new SSL cert via Certbot. Now her Grsync refuses to connect because the certificate has changed. I guess sudo apt purge grsync then re-install it would do it but is there a more elegant method? Some config file I can edit or delete? -- Phil Thane www.pthane.co.uk Tweet @pthane 01767 449759 07582 750607

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Question about PCIExpress slots and SSDs
by Chris Green 15 Nov '19

15 Nov '19

I have a Fujitsu Esprimo P910 system to which I am thinking of adding a bigger SSD. It already has a 128Gb SSD for the OS but that is just an 'ordinary' 2.5" SATA one that I simply connected to a SATA interface and thus it runs at maximum 600MB/s. The motherboard has unused PCIExpress slots as follows:- PCI-Express 3.0 x16 1 x (312 mm / 12.29 inch) Full height PCI-Express 2.0 x4 (mech. x16) 1 x (312 mm / 12.29 inch) Full height PCI-Express x1 1 x (312 mm / 12.29 inch) Full height PCI (32-bit / 33 MHz) 1 x (170 mm / 6.7 inch) Full height Now I know I need an adapter to plug a 'PCIExpress' NVME SSD into one of these slots but they're not all that expensive, e.g.:- https://www.amazon.co.uk/Adwits-Express-PCIe-based-Adapter-Factor-PCIe-x16-… So, if I get something like the above (alternative recommendations welcome) will I be able to get a fast[er] NVMe SSD and have it "just work" or are there BIOS and OS ramifications? I'm currently running xubuntu 19.04 with a 5.0.0 kernel. -- Chris Green

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[ALUG Announce] ALUG Norwich Pub Meet Thursday 14th November
by Viperfang 11 Nov '19

11 Nov '19

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via https://lists.alug.org.uk/mailman/listinfo/announce ----- Hello Norwich Aluggers, Our monthly ALUG Norwich social meeting will be held this Thursday, 14th November at The Coach and Horses (82 Thorpe Road, Norwich, NR1 1BA). The meeting officially starts at 8pm, although some people may arrive earlier. More information on those people can be found on the list and the IRC channel. If you are unsure if you will recognise us then make yourself and your intent to attend known by either posting on list or visiting us on IRC so we can look out for you rather than hiding in the corner. Optionally you could ask at the bar if they know where the geeky computer weirdos are and they'll point you in the right direction (seriously!). Another possibility is look for heaps of electronics on a table that may possibly look like movie props that would used for detonating explosives. Feel free to bring electronics/laptops/gadgets to the meet, you will by no means be alone. Ben Bewick aka Viperfang NB: This mail is automated, please refer to the usual sources for more information. ALUG Contact Details: Website : http://www.alug.org.uk/ IRC : #alug on irc.alug.org.uk List : http://lists.alug.org.uk/mailman/listinfo Twitter : http://twitter.com/anglianlug Identica: TBA Facebook: http://www.facebook.com/group.php?gid=2381613902 ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via https://lists.alug.org.uk/mailman/listinfo/announce

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Looking for new[ish] desktop machine as my main machine
by Chris Green 10 Nov '19

10 Nov '19

I'm thinking that I ought to replace my current desktop machine with something a bit faster and (maybe) less power consuming. My current desktop is a Fujitsu Esprimo P910 with a small (128Gb) SSD and several spinning hard disks. This machine stays on all the time as it's my mail server that I ssh into to read my mail whci it receives using SMTP. So I'd like to get something at least as economical (power wise), the P910 which idles at about 22 to 24 watts So requirements for new machine are:- Idle power consumption less than 20 watts or so I5 to I7 sort of performance, 6th/7th generation? Larger SSD, e.g. 512Mb, though 240Gb would probably be enough. Prefer wholly Intel hardware/chipset, especially the graphics, to be sure it works well for Linux. Space for several hard disk drives, so a laptop isn't going to work, and anyway I want a big screen (currently 24"). Any ideas and suggestions? -- Chris Green

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Hibernate Thinkpad
by steve-ALUG＠hst.me.uk 09 Nov '19

09 Nov '19

Howdy I brought a 2nd hand Thinkpad T430 & I've tweaked it so that Hibernate appears on the shutdown menu. In a command prompt, the command sudo pm-hibernate writes to disk and shuts down. Switching on brings the machine back to the state it was in on shutdown. Launching Hibernate from the startup menu, or from a command prompt typing sudo systemctl hibernate both write to the disk and shutdown, but on boot up, they start a fresh session, as if starting up from scratch. Anyone got any ideas how to successfully hibernate from the shutdown menu? Steve

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Re: [ALUG] Amateur Web Admin needs help!
by Chris Green 30 Oct '19

30 Oct '19

> Oct 27 19:38:45 webserver systemd[1]: Starting The Apache HTTP > Server... > Oct 27 19:38:45 webserver apachectl[9629]: apache2: Syntax error on > line 225 of /etc/apache2/apache2.conf: Sy This is the error that's preventing Apache from running, on "line 225 of /etc/apache2/apache2.conf", it looks as if you have truncated the full error message (unless that was me). Anyway, show us that line (and a few lines aroun d it for context) and I'm sure someone will be able to tell you what's wrong. There may be more/better information about the apache configuration error in the apache error log at /var/log/apache/error.log. (copied to Alug, please reply to there so everyone can see/help) -- Chris Green

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Re: [ALUG] Amateur Web Admin needs help!
by Chris Green 30 Oct '19

30 Oct '19

> Oct 27 19:38:45 webserver systemd[1]: Starting The Apache HTTP > Server... > Oct 27 19:38:45 webserver apachectl[9629]: apache2: Syntax error on > line 225 of /etc/apache2/apache2.conf: Sy This is the error that's preventing Apache from running, on "line 225 of /etc/apache2/apache2.conf", it looks as if you have truncated the full error message (unless that was me). Anyway, show us that line (and a few lines aroun d it for context) and I'm sure someone will be able to tell you what's wrong. There may be more/better information about the apache configuration error in the apache error log at /var/log/apache/error.log. (copied to Alug, please reply to there so everyone can see/help) -- Chris Green

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Amateur Web Admin needs help!
by Phil Thane 27 Oct '19

27 Oct '19

Hi, I have an old PC out in the shed running (L)Ubuntu that I use as a Nextcloud server (also Cherry Music and wife's backup, but it's Nextcloud that is vexing me). A few days ago my phone flashed a 'can't connect' warning from the calendar sync, so obviously I ignored it for a while. Then I tried connecting from my desktop Nextcloud client, and that failed too. I did some basic diagnostics and found: 1. Nextcloud is running, I can log in fine from the desktop using the LAN IP address of the server. 2. I use DDNS to route WAN connections and that's working fine because when I try to use Firefox to access the server I get a 401 error from Nginx. (What I should get is a Nextcloud login screen). 3. That's odd because as far as I was aware the server ran Apache. 4. Issuing status commands to Apache or Nginx doesn't get me anywhere. 5. sudo apt install apache2 reveals that I already have the latest. 6. sudo apt install nginx gives me a list of packages to install (I didn't) so I assume that means I was right about having Apache not Nginx. But that doesn't explain the Nginx 401. 7. sudo ps ux doesn't show Apache running. 8. Trying to start Apache doesn't work: phil@webserver:/$ sudo service apache2 start Job for apache2.service failed because the control process exited with error code. See "systemctl status apache2.service" and "journalctl -xe" for details. That would be fine if I had any clue where to look for those log files. And was likely to understand what they say. So what I need (I think) is an idiot's guide to getting Apache running again that's easier than re-installing everything from scratch. Can anyone help? -- Phil Thane www.pthane.co.uk Tweet @pthane 01767 449759 07582 750607

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