got, though general
concensus seems to be that we can ignore these.
What's moderately maddening is the lack of any clear documentation or
guidance, from Dell, RH, or the upstream open-iscsi / multipath
projects, on what we should be experiencing, and what, if any, errors
are considered "normal".
Think we've got a handle on it, but we're checking our sanity as well.
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
ould that have proved to be the problem (it wasn't). The storage side
of the house is an entirely different animal.
The issue BTW was ECC memory errors (disabling C-State in BIOS was the
fix).
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
problem much
> > faster that fast-talking street-smart agents who proliferated.
> >
> > It is sad that IT industry treats its early community members so callously.
> >
> > I don't know but Dell seems to be headed the Sun way -- open fo
ces.
Systems work should be handled remotely via ssh (or VNC), within screen
session, or via cronjobs.
Another useful feature would be to have an auto-logoff set after a
certain amount of inactivity. This doesn't seem to be available within
GNOME, so you'd probably have to homebrew it.
--
are failing, and need warrants it, look into HA failover
options.
Soft mounts as mentioned won't hange processes, but may result in data
loss. This is most critical in database operations (where atomicity is
assumed and generally assured by the DBMS). If the issue is one of
re-running a back
on 07:54 Thu 27 Jan, John Hodrien (j.h.hodr...@leeds.ac.uk) wrote:
> On Wed, 26 Jan 2011, Dr. Ed Morbius wrote:
>
> > I'd suggest the automount route as well (you're only open to NFS issues
> > while the filesystem is mounted), but you then have to maintain
> >
A solution
> for either problem would be HUGE news in the crypto world.)
The main argument against RSA keys was the RSA patent.
It's expired.
Go RSA.
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
at but following advice from this mailing list have
> changed to DSA and imposed a passphrase.
Either works. RSA takes merits. Password SHOULD be provided.
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
've been using
it for iSCSI storage, where it provides multipathing capabilities,
including performance improvements, HA, and persistent device naming.
Whether this applies to hotplugged SCSI devices I'm not so sure, and
udev would be my first choice.
The multipath documentation is unfortunately atrocious.
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
s as well.
If you want per-process accounting, you can get that as well, but it'll
cost you some performance overhead and a lot of set-up.
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
r, unfortunately not valid in many instances) be
helpful in identifying and correcting such instances.
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
;easy" install does that.
Pick the "expert mode" and you'll get full prompts.
If you're installing multiple systems, it's very helpful to configure a
kickstart server.
--
Dr. Ed Morbius
Chief Scientist
Krell Power Systems Unlimited
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
e's a lot of flexibility with iSCSI, but not a lot of
guidance as to best practices that I could find. Vendor docs have
tended to be very poor. Above is my recommendation, and should
generally work. Alternate configurations are almost certainly possible,
and may be preferable.
--
Dr. Ed
on 15:19 Mon 07 Feb, Ross Walker (rswwal...@gmail.com) wrote:
> On Mon, Feb 7, 2011 at 2:36 PM, Dr. Ed Morbius wrote:
> > on 13:56 Mon 07 Feb, Jason Brown (jason.br...@millbrookprinting.com) wrote:
> >> I am currently going through the process of installing/configuring an
>
t you want then you want NFS or Samba and not iSCSI.
Right, or other network-aware filesystem (andrew, coda, gluster), none
of which are particularly widely used.
http://en.wikipedia.org/wiki/List_of_file_systems#Distributed_file_systems
--
Dr. Ed Morbi
on 09:34 Tue 08 Feb, John Hodrien (j.h.hodr...@leeds.ac.uk) wrote:
> On Tue, 8 Feb 2011, Dr. Ed Morbius wrote:
>
> > *OR* as a special case, if access is *only* read-only (or read-only to
> > all but one initiator).
>
> I get the all read-only case, but wouldn't t
on 16:28 Tue 08 Feb, Jason Brown (jason.br...@millbrookprinting.com) wrote:
> On 02/07/2011 05:09 PM, Dr. Ed Morbius wrote:
> > on 15:19 Mon 07 Feb, Ross Walker (rswwal...@gmail.com) wrote:
> >> On Mon, Feb 7, 2011 at 2:36 PM, Dr. Ed Morbius
> >> wrote:
> >&g
P-11
systems, and I suffered for a while on VAX/VMS and Alpha/OpenVMS.
I've resisted the impulse to declare the death of a snake-oil salesman,
however.
--
Dr. Ed Morbius
Chief Scientist / Robot Wrangler When you seek unlimited power
Krell Power Systems Unlimited
on 16:34 Tue 08 Feb, Raymond Lillard (r...@sonic.net) wrote:
> On 02/08/2011 03:28 PM, Dr. Ed Morbius wrote:
> > on 17:02 Tue 08 Feb, Les Mikesell (lesmikes...@gmail.com) wrote:
> >> On 2/8/2011 4:40 PM, Johnny H wrote:
> >>> Thanks Mark, for this and your previou
s! Now you can login/logout in both iSCSI targets:
>
> # iscsiadm -m node --logoutall all
> # iscsiadm -m node --loginall all
>
> Cheers,
>
> --
> Santi Saez
> http://woop.es
> ___
> CentOS mailing list
> CentOS@centos
I'd suggest you educate yourself on the PCI compliance issue, and query
your prospective vendor(s) on what specific scans they run and/or how
these are tuned to specific operating environments.
I'd tend to suspect that vuln/pen testing is going to be based more on
known vulnerabilities than
e and forums, but have not had much luck.
>
> Redhat-release says
>
> CentOS release 5.5 (Final)
>
> uname:
> 2.6.18-194.32.1.el5
>
> Any help would be great.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist
ions in (at least) both CentOS and Ubuntu
> lists.
And Debian.
At least he didn't cross-post, but yes, this is tiresome.
> Which OS are you using? More importantly, have you considered
> looking things like this up in the man pages, then on the web where
> really basic question
s a bit like doing brain surgery with a sledgehammer.
Lacking in finess, but for some jobs, effective.
You might also try posting to the open-iscsi mailing list. I've found
that iscsi is very tempermental and poorly understood by most.
--
Dr. Ed Morbius, Chief Scientist /|
Ro
Some resources (disk IO particularly) aren't fungible and may have
impacts on virtualized environments though. This means swap as well.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Systems Unlimited
on 11:38 Thu 03 Mar, Always Learning (cen...@g7.u22.net) wrote:
>
> On Wed, 2011-03-02 at 19:18 -0800, Dr. Ed Morbius wrote:
>
> > It far and away already has. Dual-booting is a bastard compromise which
> > forces you to select between altnernative OSs, doesn't allow f
on 15:37 Thu 03 Mar, Lamar Owen (lo...@pari.edu) wrote:
> On Thursday, March 03, 2011 01:20:06 pm Dr. Ed Morbius wrote:
> > Compare against CIFS/Samba shares or NFS exports bewteen booted
> > host/guests. You get native filesystem support (under the host/guest as
> > releva
easonable
value on failure. Say:
tput -T $TERM init >/dev/null 2>&1 || export TERM=xterm
'tset -q' is another test which can be used.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Pow
on 16:07 Thu 03 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/3/2011 3:34 PM, Dr. Ed Morbius wrote:
> > on 13:36 Thu 03 Mar, Sean Carolan (scaro...@gmail.com) wrote:
> >> I really like gnu screen and use it everyday but there's one thing
> >> that is a
on 16:30 Thu 03 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/3/2011 4:19 PM, Dr. Ed Morbius wrote:
> > on 16:07 Thu 03 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> >> On 3/3/2011 3:34 PM, Dr. Ed Morbius wrote:
> >>> on 13:36 Thu 03 Mar, Sean Caro
on 16:50 Thu 03 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/3/2011 4:36 PM, Dr. Ed Morbius wrote:
> >
> >>>> Instead of running screen, can you run a desktop session under
> >>>> freenx on a server
> >
> >>> No xlibs on our s
on 16:44 Thu 03 Mar, Lamar Owen (lo...@pari.edu) wrote:
> On Thursday, March 03, 2011 04:24:14 pm Dr. Ed Morbius wrote:
> > I think I addressed that reality.
>
> Part of it, yes.
>
> > For some needs, you need to be on
> > bare metal, though whether this is acc
on 18:10 Thu 03 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/3/2011 5:49 PM, Dr. Ed Morbius wrote:
> >
> >>> Not that I'm intrinsically opposed to overengineering.
> >>
> >> Don't knock it until you've tried it. A full GUI desktop
on 19:21 Thu 03 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/3/2011 6:46 PM, Dr. Ed Morbius wrote:
> >
> >>
> >> NX works on Linux too. But 'locally' to me means a bunch of different
> >> machines.
> >
> > I'm aware of tha
on 21:24 Thu 03 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/3/11 7:48 PM, Dr. Ed Morbius wrote:
> I do like the way gnome collapses the icons in the task bar when you
> have enough of them - and pops up the list so you can see it. It
> makes it easy to find the term
on 08:15 Fri 04 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/4/11 12:15 AM, Dr. Ed Morbius wrote:
> >> But why do you need screen, then?
> >
> > Terminal multiplexing, session persistance, scrollback/logging, split
> > screen (top running in the to
script; done
... which is a shell idiom that shows up a LOT in my history.
As I mentioned earlier, dsh (distributed ssh) is a very powerful tool
for running multiple remote commands. Puppet, cfengine, and other tools
may also be useful.
Scales from low multiples through thousands and more of ho
OS battery when this
starts to drift. Since other CMOS and BIOS settings can be lost, and
about the only perceptible sign is a drifting hwclock, this is actually
probably a pretty good practice.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| W
we'd like something which could be run as a Nagios plugin or
cron job providing information on RAID status and/or possible disk
errors. Probably both, actually.
Thanks in advance.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you s
on 22:57 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote:
> 2011/3/7 Dr. Ed Morbius :
> > We're looking for tools to be used in monitoring the PERC H800 arrays on
> > a set of database servers running CentOS 5.5.
> >
> > We've installed mos
on 16:04 Mon 07 Mar, Blake Hudson (bl...@ispn.net) wrote:
> Original Message
> Subject: [CentOS] Dell PERC H800 commandline RAID monitoring tools
> From: Dr. Ed Morbius
> To: CentOS User list
> Date: Monday, March 07, 2011 2:43:03 PM
> > We're looki
on 12:43 Mon 07 Mar, Dr. Ed Morbius (dredmorb...@gmail.com) wrote:
> We're looking for tools to be used in monitoring the PERC H800 arrays on
> a set of database servers running CentOS 5.5.
Pardoning the self-reply, but one issue we've ahd is reconciling the
omcontrol log repo
on 23:15 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote:
> 2011/3/7 Dr. Ed Morbius :
> > on 22:57 Mon 07 Mar, Eero Volotinen (eero.voloti...@iki.fi) wrote:
> >> 2011/3/7 Dr. Ed Morbius :
> >> > We're looking for tools to be used in monitoring the
ion? LAMP stack installed.
https://posterous.com/
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Systems Unlimited| Go to Krell!
___
tp://www.cyberciti.biz/tips/linux-netconsole-log-management-tutorial.html
If you're not already remote-logging all other activity, I'd do that as
well. You might catch the start of the hang, if not all of it.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler /
nsord to periodically log system status and see
> if this gives me a clue for the next time this happens.
At best, sar will tell you whether or not you're experiencing resource
exhuastion. It's a valuable tool, but fairly coarse-grained. Cacti
will give you better resolution
on 10:05 Wed 09 Mar, Lamar Owen (lo...@pari.edu) wrote:
> On Tuesday, March 08, 2011 04:44:54 pm Dr. Ed Morbius wrote:
> > I'd very strongly recommend you configure netconsole.
>
> Ok, now this is useful indeed. Thanks for the information, even
> though I'm not the O
on 07:06 Wed 09 Mar, Michael Eager (ea...@eagerm.com) wrote:
> Dr. Ed Morbius wrote:
> >on 09:24 Tue 08 Mar, Michael Eager (ea...@eagerm.com) wrote:
> >>Hi --
> >>
> >>I'm running a server which is usually stable, but every
> >>once in a while
replacement costs and likelihood will help in the relevant business /
organizational decision.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Systems Unlimi
r amusement).
If it's a single system (and assuming there are others similarly
configured), I'm leaning toward hardware or build-quality issues: bad
RAM, other componentry, poor cable seating, etc.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist
who's built this system, but many LOM / OMC systems
will provide basic information such as this. dmidecode and lshw are
also very helpful here.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Syst
Surely if yum reinstalls it, it would re-create the permissions &
> > symlinks as well?
>
> Yes, only that reinstall doesn't exist in EL4 :)
It doesn't?
rpm -Uvh
The -U (upgrade) should occur regardless of the current install state,
though mucking with '--for
lacepkgs $(
for pkg in $( rpm -qa );
do
rpm -ql $pkg | grep -q ^/boot && && echo $pkg
done
)
Incidentally, the list of packages works out to:
filesystem-2.4.0-3.el5
grub-0.97-13.5
kernel-2.6.18-194.17.1.el5
redhat-logos-
on 14:31 Wed 09 Mar, Michael Eager (ea...@eagerm.com) wrote:
> Dr. Ed Morbius wrote:
>
> >If the issue is repeated but rare system failures on one of a set of
> >similarly configured hosts, I'd RMA the box and get a replacement. End
> >of story.
>
> I'
on 15:49 Wed 09 Mar, Keith Keller (kkel...@wombat.san-francisco.ca.us) wrote:
> On Wed, Mar 09, 2011 at 01:44:18PM -0800, Dr. Ed Morbius wrote:
> > on 09:24 Wed 09 Mar, Simon Matter (simon.mat...@invoca.ch) wrote:
> > >
> > > Yes, only that reinstall doesn't exi
ttp://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
Slightly more user-friendly descriptive guide:
http://www.addedbytes.com/for-beginners/http-status-codes/
406 indicates an unacceptable request.
Bumping up your apache debug levels and watching the error log may help,
as could snooping the traffic g
g/messages also indicates:
lvm[2314]: Monitoring snapshot
lvm[2314]: No longer monitoring snapshot
... which I think answers my own question. Posting here for Google's
sake and/or discussion.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist|
7;d suggest you test building
and deleting large directories.
Incidentally, for testing, 'make -J' can be useful for parallelizing
processing, which would also test whether or not locking/contention on
the directory entry itself is going to be a bottleneck (I suspect it may
be).
You m
acted, but if some overcommitment is reasonable for
> VM's that have light workload, then I consider that. I can increase
> system resources when that becomes necessary.
For this, you'll want to set the overcommit and swappiness kernel
parameters. Amount of swap space is
gt; and kick off the script with the parameters of the directory and what was
> added.
>
> Would anyone have thoughts?
make
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Systems Unlimited
d one up yet.
Hence this appeal to the lazyweb.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Systems Unlimited| Go to Krell!
___
on 20:35 Fri 18 Mar, John R. Dennison (j...@gerdesas.com) wrote:
> On Fri, Mar 18, 2011 at 06:33:14PM -0700, Dr. Ed Morbius wrote:
> > I'm used to Debian-based distros which have a tempfile(1) utility for
> > safely and sanely creating temporary files.
> >
> > Ther
I'd jump
straight to #6 myself.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Systems Unlimited| Go to Krell!
___
C
cal files to a remote syslog
server, possibly. I'm RTFMing on that.
Thanks in advance.
--
Dr. Ed Morbius, Chief Scientist /|
Robot Wrangler / Staff Psychologist| When you seek unlimited power
Krell Power Systems Unlimited
t; II Gigabit Ethernet" NICs, and a P410 Smart Array Controller. The
> P410 and the system BIOS have both been updated to the latest levels
> to see if that fixes the crashes, with no change.
Ugh. Broadcom's gotten better but I prefer Intel NICs. Can't speak to
the others.
on 16:35 Thu 24 Mar, Lamar Owen (lo...@pari.edu) wrote:
> On Thursday, March 24, 2011 04:23:38 pm Dr. Ed Morbius wrote:
> > I'm looking for suggestions as to a good general method of
> > remote-logging services such as nginx or anything else which doesn't
> > suppo
on 16:56 Thu 24 Mar, Windsor Dave L. (AdP/TEF7) (dave.wind...@us.bosch.com)
wrote:
> On 3/24/2011 4:38 PM, Dr. Ed Morbius wrote:
> > Dave:
> >
> > on 16:03 Thu 24 Mar, Windsor Dave L. (AdP/TEF7.1)
> > (dave.wind...@us.bosch.com) wrote:
> >> Hello Everyone,
>
on 17:14 Thu 24 Mar, Lamar Owen (lo...@pari.edu) wrote:
> On Thursday, March 24, 2011 04:44:00 pm Dr. Ed Morbius wrote:
> > on 16:35 Thu 24 Mar, Lamar Owen (lo...@pari.edu) wrote:
> > > On Thursday, March 24, 2011 04:23:38 pm Dr. Ed Morbius wrote:
> > > > I'm l
on 17:50 Thu 24 Mar, Lamar Owen (lo...@pari.edu) wrote:
> On Thursday, March 24, 2011 05:37:41 pm Dr. Ed Morbius wrote:
> > on 17:14 Thu 24 Mar, Lamar Owen (lo...@pari.edu) wrote:
> > > Prior to PostgreSQL supporting syslog I used [logger] to
> > > pipe PostgreSQL out
tination d_nginx_21 { file("/var/log/nginx/error.log"); };
> ...
> log { source(s_sys); filter(f_nginx_20); destination(d_nginx_20); };
> log { source(s_sys); filter(f_nginx_21); destination(d_nginx_21); };
>
>
>
> In the same way I catch logs from 20-30 servers to
on 09:08 Fri 25 Mar, Lamar Owen (lo...@pari.edu) wrote:
> On Thursday, March 24, 2011 06:52:24 pm Dr. Ed Morbius wrote:
> > Right, and the general solution also generalizes to other tools.
> > Postgresql (which we aren't using currently) also has its own log
> > handl
ith some
critical service saying "wups, no more serving until I can flush my log
buffers" than it does losing a few lines of logging periodically (though
that should also be minimized).
> 4. I used and using opensource version of syslog-ng and no have
> problems with load. Syslog-ng
on 15:28 Fri 25 Mar, Les Mikesell (lesmikes...@gmail.com) wrote:
> On 3/25/2011 2:53 PM, Dr. Ed Morbius wrote:
> >
> > My concern with buffering / blocking output has more to do with some
> > critical service saying "wups, no more serving until I can flush my log
> >
on 13:18 Fri 25 Mar, Mogens Kjaer (m...@lemo.dk) wrote:
> On 03/24/2011 10:05 PM, Dr. Ed Morbius wrote:
> > You can create a "timestamp" cron job. Just a
> >
> > */10 * * * * root Logger "--- TIMESTAMP ---"
>
> syslogd already has this buildin.
; have the owner/group and permissions as the parent directory?
man adduser -> FILES -> /etc/login.defs
At login, umask is set by the shell initialization. Check ~/.bashrc,
~/.bash_profile, /etc/bashrc, and /etc/profile, for the usual suspects.
--
Dr. Ed Morbius, Chief Scientist /
>
> Anyone needs any info about hacking a .ppd, feel free to email me; if you
> have a beast of a z3200ps, I'll be glad to send you a copy of mine.
A task with a very laudable history:
http://oreilly.com/openbook/freedom/ch01.html
--
Dr. Ed Morbius, Chief Scientist /
76 matches
Mail list logo
