Re: why is eth0 up by default?

[Vincent Lefevre]

On 2015-03-17 22:39:56 -0500, David Wright wrote:
> Quoting Vincent Lefevre (vinc...@vinc17.net):
> > I would like to know why is eth0 up by default?
> > 
> > IIRC, this wasn't the case in the past, but I'm not sure.
> 
> Not knowing what you mean by the past, nor what you're running, I can
> but hazard a guess. And I mean guess.

IIRC, several years ago, it wasn't up. Three months ago, I used
my laptop with wifi only for 1 - 2 weeks, and there wasn't any
problem, so that it is quite recent I think.

> I can't remember ever having modified /etc/init.d/networking but I
> find I also have /etc/init.d/networking.dpkg-old. Comparing them,
> there is a paragraph which was:
[...]

Perhaps I could do some tests to see whether eth0 was up before
entering this script and after...

> I haven't tried to trace whether /etc/init.d/networking is calling
> ifup_hotplug () on eth0 or any other interface. It's perfectly
> possible that my eth0 is up because I (wicd) am watching for the wired
> interface to appear (because it should prefer it to wlan).

I also use wicd, but I don't track the wired interface (in the config,
the device field is blank instead of containing "eth0") because I use
it for wifi only.

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Re: Advise on setup of small office locally or via VPS

[Linux4Bene]

Op Wed, 18 Mar 2015 03:58:02 +, schreef Dan Purgert:


> I read it as you were /planning/ on using a Debian box for routing and
> firewall (and then switched gears to "what's a good appliance?" midway
> through the writing), which is why I asked.
> 
> Honestly, unless you already have said box ready to go, I would skip it
> and just use an appliance (e.g. the UBNT Edge Router).  Less to go wrong
> / muck up.

I don't have such a box so I would rather use an appliance as you 
suggested.


>> Thanks, looks like a simple and adequate solution.
> 
> Yeah, they're a bit more than "adequate" -- they rival equipment put out
> by other vendors that's several times more expensive (IIRC, "cheap"
> Cisco kit is like 500-1000 USD).

Yes, I really liked the specs.

> Note - I'm in the USA, perhaps your local ISP's equipment isn't as
> rubbish as the ones here.  Best way to figure it out is by finding out
> what they'd supply, and then digging up discussions about it on google.

Indeed, I will look at the router type and see what google comes up with.

> What I meant was that if you're putting a "local" server into a DMZ area
> already (because it's public facing), adding that extra internal server
> seems to be adding complexity for the sake of complexity, and wouldn't
> be offering you any benefits -- this also ties in with your webmail
> solution, if you choose to also have that going.
> 
> Now, if you were a bigger company with two or more sites that happen to
> be somewhat distant from one another, then running a relay would be
> beneficial (as users would all be hitting their "local" mail server,
> instead of /everyone/ needing to hit the server at your HQ site).

That's a valid remark. I will opt to leave the mailserver on the VPS for 
the time being.

> You've already got a frontend for them (hint - "roundcube")

Yes, I just need to find a good plugin allowing for the users to change 
their password.


> Probably not.  I mean, yeah some of the syntax for the config files may
> have changed, but LDAP is still LDAP ... so the core principles of the
> setups will be the same.

I dug up my notes and I have found some ldif files and procedures.
I'm good to go.

> emacs :)

Hehe, I have tried it once. I should take the time to give it a more 
thorough try.

> Git works well with source code, I'm not really sure how well it works
> outside of that (e.g. ODT files).  I imagine that it would provide
> "some" of the functionality you're looking for, but possibly not all of
> it.
> 
> For simple text files, I've taken a liking to rcs.  One of the guys here
> (or on one of the other newsgroups I haunt) had a decent basic wrapper
> for it too.

I don't know rcs. I will have a look at it.

> Well, not so sure about the extra firewall in the mix there - I mean,
> yeah you'll have one on site likely as part of your router appliance ...
> but that's pretty much a given these days anyway.
> 
> Or are you planning on throwing a firewall somewhere else, such as
> between the LAN and the file server (and if so - why?)

I would hook up the firewall after the ISP router, before the LAN.
The routers of ISP's here only have very basic firewall capabilities.
I rather use my own device to protect the LAN.
And it gives me a chance to learn the UBNT Edge router.

> They'll definitely make it to your ISP.  Whether or not your ISP will
> relay them as "yourdomain.com" or
> "our-ip-address-block.somewhere.ISP.com"
> is something you'll have to check with them though ...
> 
> Really about the only guaranteed way of getting that would be to own an
> actual block of IPs (i.e. bought directly from one of the number
> registrars ... ARIN or RIPE or one of their delegated subsidiaries). 
> But in doing so, you're talking about buying something like a /20 (or
> whatever their currently "smallest" allocation is).

A big block is going to be overkill so I'll have to get by with whatever 
my ISP offers me. If I have a couple of IP's, it's enough for the public 
services I have.

Regards,
Benedict


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Re: Advise on setup of small office locally or via VPS

[Linux4Bene]

Op Tue, 17 Mar 2015 18:50:39 -0700, schreef David Christensen:

> On 03/17/2015 04:22 AM, Linux4Bene wrote:
>> Thanks for any advice, thoughts, links or info and for your patience if
>> you got this far :)
> 
> I run a SOHO LAN with ADSL, 4 static IP's, and a few Internet services.
> 
> 
> I avoid running key Internet-facing services locally -- my WAN bandwidth
> is too precious and the services are too important.  I prefer service
> provider DNS and mail, and VPS WWW.

I thought about using the domain registrars DNS but I wanted to set it up 
as a learning exercise. VPS is really suited for www.
I still have to figure out how to setup a staging area. Do I go with 
another VPS server for that or not? Ideally there would be another 
machine hosting the sites so they are still accessible when the other VPS 
goes down.
I haven't really researched this yet, but it's on my to do list.


> +1 for using a dedicated device/ FOSS distribution for your WAN/LAN
> gateway.  I use IPCop.

I have heard of IPCop, haven't tried it out.

> +1 for using Samba for the LAN file server -- I want interoperability:
> Linux, *BSD, Windows, Mac, and others.

Indeed, and the setup is rather painless :)

> VPN's are appealing, but consider the consequences of a VPN machine
> compromise.  Securing the rest of the VPN against that risk is
> non-trivial, and involves other people's computers and networks.  I
> turned it off.

I thought it made some sense to tie the WAN and LAN part together.
After reading your comment, it indeed seems like over complicating things.
As Dan already suggested, there is merit in KISS.

I guess you access your VPS servers also via SSH only then?
I run no gui on them so it's enough for my needs.


Thanks David for the insight,

Regards,
Benedict


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Re: Anyone with experience of Intel S3000AH server boards

[Lisi Reisz]

On Wednesday 18 March 2015 00:56:11 David Christensen wrote:
> On 03/17/2015 04:17 PM, Andrew Wood wrote:
> > ... Ive found them to be unreliable, they keep failing for no apparent
> > reason just refuse to boot up with 4 angry looking red LEDs. ...
> > Can anyone recommend a Socket 775 server board with 2 on board Ethernets
> > which is more solid? We're a small charity and  cant really afford a
> > wholesale replacement so Id like to keep the same CPUs and RAM if
> > possible.
>
> Assuming that your charity is legally recognized (e.g. incorporated),
> your charity has something very valuable to offer in exchange for
> donated servers:
>
> 1.  A receipt for tax purposes; and
>
> 2.  A public "thank you" message (charity newsletter, web site, lobby
> posters, etc.) with a non-revocable, perpetual license for the donor to
> copy and use as they see fit (e.g. good citizenship marketing).
>
>
> Write up the above opportunity and mail it to all of the charity's
> members and sponsors, include it with your charity's recruiting
> literature, and post it publicly (e.g. web site, Craig's List, etc.).
>

andrew@perpetualmotion.*co.uk*  my stars.

Since your advice would also, at least some of it, require a move of 
continent, he may need to edit it a bit!!!  

Lisi


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Re: Might wait with upgrade........

[Charlie]

On Wed, 18 Mar 2015 07:13:51 +0100 Michael Biebl sent:

> Am 18.03.2015 um 06:25 schrieb Charlie:
> > 
> > Received this when I tried to upgrade my Jessie system:
> > 
> > critical bugs of systemd (215-11 → 215-12) 
> >  b1 - #780675 - systemd: segfault in systemd when running systemctl
> > daemon-reload serious bugs of systemd (215-11 → 215-12)
> >  b2 - #779902 - /tmp can be mounted as tmpfs against
> > user's will serious bugs of libfreetype6 (2.5.2-2 → 2.5.2-3)
> >  b3 - #780143 - libfreetype6_2.5.2-3 makes some fonts
> > unusable Summary:
> >  systemd(2 bugs), libfreetype6(1 bug)
> > 
> > So I might wait with the upgrade I think.
> 
> No, you don't need to wait, at least not for the two systemd issues.
> Those affect 215-11 just the same as 215-12.
> #780675 is only triggered under very rare circumstances, so you are
> most likely not affected anyway. If 215-11 works, so will 215-12.
> 
> As for #779902, the situation is the same. If you haven't run into
> this issue with 215-11, you won't with 215-12 either.
> 
> 
> Michael

Thank you Michael, much appreciated.

Charlie

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Re: Cool things to do with server

[Chris Bannister]

On Sat, Mar 14, 2015 at 07:43:46PM -0700, Joris Bolsens wrote:
> 
> > I have a guide on my website[1] for setting up Postfix that is secure.
> > If you google, you'll find many more for different configurations[2].
> > Use them as guides and review the documentation on the proper
> > Postfix/Exim/etc websites and man pages.
> > 
> I'll give it a look then, awesome :D
> 
> Anything else I could do with this server? :p

https://folding.stanford.edu/home/guide/linux-install-guide/

Don't forget to join team 2019. :)

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who are being oppressed, and loving the people who are doing the 
oppressing." --- Malcolm X


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how to debug this fuse problem

[Harry Putnam]

Running `jessie'

I've been using encfs, drawn from wheeze for months.  But following a
`full upgrade' I can no longer mount an encfs file system.

The error message from mount attempt:

,
| fuse: device not found, try 'modprobe fuse' first
| fuse failed.  Common problems:
|  - fuse kernel module not installed (modprobe fuse)
|  - invalid options -- see usage message
`

Attempting to modprobe fuse gets this error:

,
| root # modprobe fuse
| modprobe: ERROR: could not insert 'fuse': Invalid argument
`

I did try downgrading fuse and dependencies, but got the same errors

The upgrade log shows no upgrade for fuse at the last `full-upgrade'
but does show something happening with the kernel. However, I don't
understand what it means.

,
| [UPGRADE] linux-compiler-gcc-4.8-x86:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
| [UPGRADE] linux-headers-3.16.0-4-586:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
| [UPGRADE] linux-headers-3.16.0-4-common:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
| [UPGRADE] linux-image-3.16.0-4-586:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
| [UPGRADE] linux-libc-dev:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
`

Running `uname -r' still shows: 3.16.0-4-586, so I'm not sure what:
3.16.7-ckt4-3 -> 3.16.7-ckt7-1 means.

Anyone have an idea what's going on here... and what I might have to
do to mount my encfs filesystem?



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Re: how to debug this fuse problem

[Eduard Bloch]

Hallo,
* Harry Putnam [Wed, Mar 18 2015, 07:48:54AM]:
> Running `jessie'
> 
> I've been using encfs, drawn from wheeze for months.  But following a
> `full upgrade' I can no longer mount an encfs file system.
> 
> The error message from mount attempt:
> 
> ,
> | fuse: device not found, try 'modprobe fuse' first
> | fuse failed.  Common problems:
> |  - fuse kernel module not installed (modprobe fuse)
> |  - invalid options -- see usage message
> `
> 
> Attempting to modprobe fuse gets this error:
> 
> ,
> | root # modprobe fuse
> | modprobe: ERROR: could not insert 'fuse': Invalid argument

Something is wrong with your modules installation. Run "dmesg" to see
what happened there.
Run "depmod -a" once, it might help if some stupid tool damaged the
module database (I had that "fun" with old dkms before).
Check the installed files (debsums linux-image-3.16.0-4-586)
Reinstall if needed (apt-get --reinstall install linux-image-3.16.0-4-586)

> The upgrade log shows no upgrade for fuse at the last `full-upgrade'
> but does show something happening with the kernel. However, I don't
> understand what it means.
> 
> ,
> | [UPGRADE] linux-compiler-gcc-4.8-x86:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
> | [UPGRADE] linux-headers-3.16.0-4-586:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
> | [UPGRADE] linux-headers-3.16.0-4-common:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
> | [UPGRADE] linux-image-3.16.0-4-586:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
> | [UPGRADE] linux-libc-dev:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1

It's just the kernel from Jessie. See
https://packages.debian.org/jessie/linux-image-3.16.0-4-586

Regards,
Eduard.

-- 
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Re: Advise on setup of small office locally or via VPS

[Dan Purgert]

On Wed, 18 Mar 2015 09:05:12 +, Linux4Bene wrote:

> Op Wed, 18 Mar 2015 03:58:02 +, schreef Dan Purgert:
> 
> [snip]
>> You've already got a frontend for them (hint - "roundcube")
> 
> Yes, I just need to find a good plugin allowing for the users to change
> their password.
> 

Dunno about roundcube (I use horde), but I do recall a bit of trial and 
error with convincing horde/imp to play nice with the SASL authentication 
provided by dovecot.


> 
>> Well, not so sure about the extra firewall in the mix there - I mean,
>> yeah you'll have one on site likely as part of your router appliance
>> ...
>> but that's pretty much a given these days anyway.
>> 
>> Or are you planning on throwing a firewall somewhere else, such as
>> between the LAN and the file server (and if so - why?)
> 
> I would hook up the firewall after the ISP router, before the LAN.
> The routers of ISP's here only have very basic firewall capabilities.
> I rather use my own device to protect the LAN.
> And it gives me a chance to learn the UBNT Edge router.

Gotcha -- since the ERLite (or, well most any router these days) includes 
a firewall in the box already, I wasn't sure if you meant that, or if you 
were adding another firewall-only appliance into the mix...


> 
>> They'll definitely make it to your ISP.  Whether or not your ISP will
>> relay them as "yourdomain.com" or
>> "our-ip-address-block.somewhere.ISP.com"
>> is something you'll have to check with them though ...
>> 
>> Really about the only guaranteed way of getting that would be to own an
>> actual block of IPs (i.e. bought directly from one of the number
>> registrars ... ARIN or RIPE or one of their delegated subsidiaries).
>> But in doing so, you're talking about buying something like a /20 (or
>> whatever their currently "smallest" allocation is).
> 
> A big block is going to be overkill so I'll have to get by with whatever
> my ISP offers me. If I have a couple of IP's, it's enough for the public
> services I have.


Yep, figured as much.  And TBH, ARIN et. al. are pretty stingy with 
giving out IPs in the first place ... so you'd probably be shot down 
anyway.


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Re: Might wait with upgrade........

[John L. Ries]

I upgraded my employer's Debian server over the weekend and the worst 
thing that happened was that systemd took forever to launch a service 
after I rebooted; and as a consequence, none of the jobs stacked up behind 
that launch ran (including starting the NFS server, which is how I noticed 
there was a problem).  Solved with a reboot (frustrating, as I don't 
really know what happened).  Since then, nothing bad has happened (except 
that Rstudio Desktop won't run... but Server is happy), but I'm crossing 
my fingers (OS upgrades are so much fun).


Had to do it since I needed GCC 4.8 and my efforts to install it 
separately under Wheezy after de-Ubuntuing the box failed miserably.


--|
John L. Ries  |
Salford Systems   |
Phone: (619)543-8880 x107 |
or (435)867-8885  |
--|


On Wed, 18 Mar 2015, Charlie wrote:



Received this when I tried to upgrade my Jessie system:

critical bugs of systemd (215-11 → 215-12) 
b1 - #780675 - systemd: segfault in systemd when running systemctl
daemon-reload serious bugs of systemd (215-11 → 215-12) 
b2 - #779902 - /tmp can be mounted as tmpfs against user's will
serious bugs of libfreetype6 (2.5.2-2 → 2.5.2-3) 
b3 - #780143 - libfreetype6_2.5.2-3 makes some fonts unusable
Summary:
systemd(2 bugs), libfreetype6(1 bug)

So I might wait with the upgrade I think.

Charlie
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Re: Might wait with upgrade........

[Charlie]

  On Wed, 18 Mar 2015 10:02:31 -0600 (MDT) John mentioned this: 
Re: Might wait with upgrade. 

> I upgraded my employer's Debian server over the weekend and the worst 
> thing that happened was that systemd took forever to launch a service 
> after I rebooted; and as a consequence, none of the jobs stacked up
> behind that launch ran (including starting the NFS server, which is
> how I noticed there was a problem).  Solved with a reboot
> (frustrating, as I don't really know what happened).  Since then,
> nothing bad has happened (except that Rstudio Desktop won't run...
> but Server is happy), but I'm crossing my fingers (OS upgrades are so
> much fun).
> 
> Had to do it since I needed GCC 4.8 and my efforts to install it 
> separately under Wheezy after de-Ubuntuing the box failed miserably.


> 
> On Wed, 18 Mar 2015, Charlie wrote:
> 
> >
> > Received this when I tried to upgrade my Jessie system:
> >
> > critical bugs of systemd (215-11 → 215-12) 
> > b1 - #780675 - systemd: segfault in systemd when running systemctl
> > daemon-reload serious bugs of systemd (215-11 → 215-12)
> >  b2 - #779902 - /tmp can be mounted as tmpfs against
> > user's will serious bugs of libfreetype6 (2.5.2-2 → 2.5.2-3)
> >  b3 - #780143 - libfreetype6_2.5.2-3 makes some fonts
> > unusable Summary:
> > systemd(2 bugs), libfreetype6(1 bug)
> >
> > So I might wait with the upgrade I think.
> >
> > Charlie


  From my keyboard:

   Hello John,

  Thank you for that information. But as Michael suggested I didn't
  have any problems. Though there was a momentary glitch with Lyx
  coming up after the upgrade. Loading it the second time it
  worked without error.

Thanks for your input.
Charlie

East Gippsland Wildlife Rehabilitators Inc..
   http://www.egwildlife.com.au/

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Re: how to debug this fuse problem

[Harry Putnam]

Eduard Bloch  writes:

[...]

>> Attempting to modprobe fuse gets this error:
>> 
>> ,
>> | root # modprobe fuse
>> | modprobe: ERROR: could not insert 'fuse': Invalid argument
>
> Something is wrong with your modules installation. Run "dmesg" to see
> what happened there.
> Run "depmod -a" once, it might help if some stupid tool damaged the
> module database (I had that "fun" with old dkms before).
> Check the installed files (debsums linux-image-3.16.0-4-586)
> Reinstall if needed (apt-get --reinstall install linux-image-3.16.0-4-586)

dmesg shows what looks like quite a mess.  I' don't know what it might
mean, perhaps someone here has seen it before or understands what it
means?

,
| dmesg|grep fuse
| 
| [7.166080] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [7.166143] fuse: disagrees about version of symbol iov_iter_get_pages
| [7.166188] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [  313.475402] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [  313.475416] fuse: disagrees about version of symbol iov_iter_get_pages
| [  313.475418] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [38952.902191] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [38952.902224] fuse: disagrees about version of symbol iov_iter_get_pages
| [38952.902239] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [38965.865410] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [38965.865413] fuse: disagrees about version of symbol iov_iter_get_pages
| [38965.865584] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [38989.899913] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [38989.904530] fuse: disagrees about version of symbol iov_iter_get_pages
| [38989.904530] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [39204.559898] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [39204.559947] fuse: disagrees about version of symbol iov_iter_get_pages
| [39204.559970] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [39718.223622] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [39718.223683] fuse: disagrees about version of symbol iov_iter_get_pages
| [39718.223726] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [40037.891183] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [40037.891353] fuse: disagrees about version of symbol iov_iter_get_pages
| [40037.891495] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [40056.750094] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [40056.750148] fuse: disagrees about version of symbol iov_iter_get_pages
| [40056.750186] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [40209.000103] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [40209.015074] fuse: disagrees about version of symbol iov_iter_get_pages
| [40209.015080] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [40219.713514] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [40219.713570] fuse: disagrees about version of symbol iov_iter_get_pages
| [40219.713608] fuse: Unknown symbol iov_iter_get_pages (err -22)
| [40284.303346] fuse: Unknown symbol pagecache_get_page_fixed (err 0)
| [40284.303361] fuse: disagrees about version of symbol iov_iter_get_pages
| [40284.303363] fuse: Unknown symbol iov_iter_get_pages (err -22)
`


>> The upgrade log shows no upgrade for fuse at the last `full-upgrade'
>> but does show something happening with the kernel. However, I don't
>> understand what it means.
>> 
>> ,
>> | [UPGRADE] linux-compiler-gcc-4.8-x86:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
>> | [UPGRADE] linux-headers-3.16.0-4-586:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
>> | [UPGRADE] linux-headers-3.16.0-4-common:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
>> | [UPGRADE] linux-image-3.16.0-4-586:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
>> | [UPGRADE] linux-libc-dev:i386 3.16.7-ckt4-3 -> 3.16.7-ckt7-1
>
> It's just the kernel from Jessie. See
> https://packages.debian.org/jessie/linux-image-3.16.0-4-586

Sorry to be so dense here but:

Apparently it is a little more going on in those lines above.  I don't
see anything on the page you cite with names like: 3.16.7-ckt4-3
3.16.7-ckt7-1

searching with `aptitudue search ckt7' (or ckt4)  finds nothing at all.

What is the meaning of the names with ckt in them?

I suspect I could/should be running i686 with pae.  Not sure why the
installer choose a 486 kernel originally ... (it changed to 586 during a
full-upgrade a mnth or two ago)

The jessie OS here is running as vbox guest on a 2x Xeon on HP xw8600

Would it be likely to solve any of this if I upgraded to a 686 pae
kernel?   Or more likely to make the mess worse and I should get the
fuse mess cleared up first?


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Re: Advise on setup of small office locally or via VPS

[David Christensen]

On 03/18/2015 02:14 AM, Linux4Bene wrote:

VPS is really suited for www.
I still have to figure out how to setup a staging area. Do I go with
another VPS server for that or not? Ideally there would be another
machine hosting the sites so they are still accessible when the other VPS
goes down.
I haven't really researched this yet, but it's on my to do list.


I have one VPS running nginx with named-based virtual hosts.  I use 
projectname.mydomain.com for staging and www.projectname.com for production.



If you have the money for multiple www servers, then you might want to 
set up a load balancer that can detect a dead www server and stop 
routing packets to it.




I guess you access your VPS servers also via SSH only then?


Yes.


David


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Q: Apache::mod_proxy how implement request forward for image files

[Snow Leopard]

Hello,

Can somebody explain how next task can be accomplished? My own attempt 
to figure out how this can be achieved wasn't successful.


I do not see any problem with virtual servers. But how to implement in 
apache2 through mod_proxy forwarding for image files requests only? And 
how on backend virtual server exclude/blocks a requests for all types of 
files except pictures?


 Create a new Apache VirtualHost that meets the following requirements:
Name: frontend.${IP}.example.com
Port: 80
Document Root: /var/www/vhosts/frontend/htdocs
Using Mod Proxy, forward all requests for image files 
(.jpg, .gif, or .png) to the backend server without modifying the URL of 
the request
All errors should log to 
/var/www/vhosts/frontend/logs/error.log
All access requests should be logged to 
/var/www/vhosts/frontend/logs/access.log except for requests for any 
files ending in .jpg, .gif, .png.


Backend Site

Create another Apache VirtualHost that meets the following 
requirements:

Name: backend.${IP}.example.com
Port: 8001
Document Root: /var/www/vhosts/backend/htdocs
Configure this VirtualHost to respond with a 403 Forbidden 
error for all requests for files that do not contain an extension of 
.jpg, .gif, or .png



Thank you in advance,
Andy


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can't start KDE with 2 monitorsz

[James]

This is Jessie.

I have 2 monitors and I get this in my /var/log/kdm.log:

/usr/bin/X: symbol lookup error: 
/usr/lib/xorg/modules/drivers/nouveau_drv.so: undefined symbol: 
exaGetPixmapDriverPrivate


I CAN start KDE if I unplug the HDMI from the 2nd monitor.


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Re: how to debug this fuse problem

[David Wright]

Quoting Harry Putnam (rea...@newsguy.com):

> Sorry to be so dense here but:
> 
> Apparently it is a little more going on in those lines above.  I don't
> see anything on the page you cite with names like: 3.16.7-ckt4-3
> 3.16.7-ckt7-1
> 
> searching with `aptitudue search ckt7' (or ckt4)  finds nothing at all.
> 
> What is the meaning of the names with ckt in them?

The kernel version is linux-image-3.16.0-4-686-pae and 3.16.7-ckt7-1
is the Debian package version tacked on the end, so on my i386
the deb is called linux-image-3.16.0-4-686-pae_3.16.7-ckt7-1_i386.deb

https://lists.debian.org/debian-kernel/2014/11/msg00154.html
explains why 3.16-kernel packages have ckt in the package version name.

> I suspect I could/should be running i686 with pae.  Not sure why the
> installer choose a 486 kernel originally ... (it changed to 586 during a
> full-upgrade a mnth or two ago)

The "486" version was probably a 586 version, which is for PCs lacking
PAE. Apparently the fact that the "486" version wouldn't actually run
on a real 486 was not noticed for somewhile after the relevant
improvement was made.

cat /proc/cpuinfo | grep pae
should indicate if 686-pae versions would be suitable.

Sorry not to be any help with the fuse problem.

Cheers,
David.


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