I've inherited a system which has an Adaptec 2420SA RAID controller and 4x SSDs running in RAID6.
There's no end to problems experienced with this setup; a disk seems to time out and get ejected
from the controller at least every week. It's not always the same disk though, and I've tried
replacing each of the SSDs with their spares, to no avail.
Is there any known issue with using SSDs in hardware RAID that I've overlooked? Performance isn't
*that* much of an issue, since it's only running Apache + mod_perl and a ~100GB MySQL database.
Any thoughts appreciated
when I do
; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> somedomain.org
;; global options: +cmd
;; connection timed out; no servers could be reached
What is the "no servers" that could not be reached??
If I do
it works fine.
Both somedomain.org and greenwareit (and 3 other domains) are on the
same dns server.
somedomain.org is registered with namecheap.com. Any one has domain
registered with them? (not my choice)
From: "Sean Crosby" <richardnixonshead(a)gmail.com>
> Hi Peter,
> I think your problem is that glue records for your domain do not exist in
> the zone file for the DNS servers for id.au
> I think you need to contact your domain registrar to add
> ns.gonglenuts.id.au as a glue record in the id.au namespace,
I assumed that would happen when I can specify NS server and IP address in
the administrative interface of the domain registrar.
In a second step I wanted to experiment with some DNSSEC and PGP key via
DNS related stuff so I thought "control as much as possible by myself"
would be good.
Here a bit more background:
I wanted to point at this but I cannot find anything of same content in
English (this link is German):
> or you can
> set your primary DNS server as something with an address outside the
> gonglenuts.id.au domain.
Yes, that's plan B.
Ages ago I had these external addresses (an ISP) as primary sources but
they were configured to act as a slave to a DNS server I was running.
That way I avoided these constant: "Can you make a change in our domain"
I wonder who could do this.
Also, DENIC in Germany asked for at least two nameservers in two different
locations but that does not seem to be a requirement here?
Thanks for help
did you figure out your problem?
I made, just for fun, an experiment to get an own nameserver up and
running (I did not run a _public_ one for ages).
The nameserver is up and running, I see it in whois but it does not get
Here in detail:
Domain Name: gonglenuts.id.au
Last Modified: 01-Jul-2014 02:03:45 UTC
Registrar ID: WAR
Registrar Name: Web Address Registration
Registrant: Peter Ross
Eligibility Type: Other
Name Server: ns.gonglenuts.id.au
Name Server IP: 220.127.116.11
On the nameserver itself runs a bind 9.10.
The zone file:
@ IN SOA ns.gonglenuts.id.au. root.ns ( 2014073001 1d 12h 1w 3h )
; Serial, Refresh, Retry, Expire, Neg. cache TTL
@ IN NS ns.gongelnuts.id.au.
ns IN A 18.104.22.168
You can wuery the server, it returns SOA, NS and A records.. but if you
query "the Internet" it returns:
> set type=SOA
** server can't find gonglenuts.id.au: NXDOMAIN
I do not know what I did wrong.
While writing this, I noticed this whois line
But I do not know why it is. The domain is registered, setup and paid.
It was a bit low on my priority list over the last weeks (it is a
"playground project") but I still would like to sort it out one day..
From: "Daniel Jitnah" <djitnah(a)greenwareit.com.au>
>> Hi Daniel,
>> did you figure out your problem?
> I cheated. The domain registrar in question provides its own dns
> hosting server. I used it. But I did not want at first because it has
> limitations like no mx record - but for now thats not an issue.
> In the past I did setup my own server, but have found it easier to use
> xname.org. They are free but can be slow to propagate and update.
Okay, I will have a look at this too. Thanks.
> You seem to be using an internal IP (192.168...)
> Is your router allowing DNS port through and redirecting to
The not-working nslookup was using my internal company DNS server which is
forwarding to a provider. That's not an issue.
I get the same "not found" on any other DNS server.
What I wanted to illustrate: The nameserver itself (ns.gonglenuts.id.au on
22.214.171.124) is up and running - but it does not get propagated.
You can query it yourself:
> server 126.96.36.199
Default server: 188.8.131.52
> How long has it been on for? could be it is still propagating. It can
> take over 24 hrs sometimes.
I set it up weeks ago.
> Did you create an A record for gonglenuts.id.au?
Yes (see request above, and also in my zone file below).
> This is my zonefile for greenwareIT on xname.org:
> $TTL 600 ; Default TTL
> greenwareit.com.au. IN SOA ns0.xname.org. danyj028.gmail.com. (
> 2014073101 ; serial
> 600 ; Refresh period
> 600 ; Retry interval
> 604800 ; Expire time
> 10800 ; Negative caching TTL
> $ORIGIN greenwareit.com.au.
> IN NS ns2.xname.org.
> IN NS ns1.xname.org.
> IN NS ns0.xname.org.
> IN MX 10 mx.greenwareit.com.au.
> git999 IN A 184.108.40.206
> shop IN A 220.127.116.11
> greenwareit.com.au. IN A 18.104.22.168
> www IN A 22.214.171.124
> git09 IN A 126.96.36.199
> mx IN A 188.8.131.52
> www2 IN A 184.108.40.206
It is similar to mine, I think (of cause my is shorter)
>> $TTL 3h
>> @ IN SOA ns.gonglenuts.id.au. root.ns ( 2014073001 1d 12h 1w 3h )
>> ; Serial, Refresh, Retry, Expire, Neg. cache TTL
>> @ IN NS ns.gongelnuts.id.au.
>> ns IN A 220.127.116.11
With the current Ubuntu LTS as both host and guest for LXC I'm missing
/dev/net/tun inside the LXCs.
I found some people on the internet mumbling about creating
/var/lib/lxc/$NAME/autodev as a shell script that does the appropriate
mknod, but this doesn't seem to do anything for me. For the time being
I've "fixed" it with a bodged openvpn init script inside the LXCs
(that just adds the mknod call) but I wondered if anyone here knew
what the proper way to fix this on LXCs is?
Please note, this is a separate issue to needing to add the permission
to the LXC config. I'm already doing that, and the dev node wouldn't
work at all if I hadn't. (But works fine once I do)
Turning and turning in the widening gyre
The falcon cannot hear the falconer
Things fall apart; the center cannot hold
Mere anarchy is loosed upon the world
There is a whole lot of Linux training starting to happen in the main
For example the Linux Foundation MOOC
LPI has partnered with NDG and Cisco’s NetSpace Learning Management System
and via Cisco Netacademy to provide Linux Fundementals. The Netacademy is
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countries, all of whom have access.
The Red Hat Academy has been offering training through schools and tertiary
institutes for many year. Victoria University, Melbourne are a Red Hat
Academy who can provide the RHCSA and RHCE vendor exams as part of their
I'm not recommending that anyone buys this, but I think it's an indication of the increasing popularity of Linux.
$99 for an Online Linux and UNIX Certification Bundle (Don't Pay $2,339)
Sent from my Samsung Galaxy Note 2 with K-9 Mail.
On 24 Jul 2014, at 18:32, James Harper <james(a)ejbdigital.com.au> wrote:
> What brand/model are the SSD's? We just had two Samsung SSD's fail pretty much simultaneously (within the replacement window, so it took the machine down). Presumably it was wearout, although all post-mortem testing we did shows no problems with them and the limited SMART capability they possessed said everything was fine.
They are Plextor M5 Pro drives. The controller doesn't even seem to pass SMART through, other than to query on it's own and give either "OK" or not
Kogan is selling a 256G SATA flash storage device with Intel flash (IE flash
that shouldn't lose your data) for $139.
Flash storage will make your system a lot faster. Boot time will be improved
a lot, particularly if you use systemd and have a multi-core CPU (in which
case CPU won't be a bottleneck and most of the boot time will be disk IO).
The time taken to login to a GUI environment will be a lot faster too, last
time I timed it a flash device halved the time from entering a password in KDM
to having KDE ready to use.
Flash storage also makes your system a lot quieter, you might not realise the
noise from a constantly spinning hard drive until it goes away.
If you have $139 to spend on an upgrade to a desktop system then this is
probably the best option.
My Main Blog http://etbe.coker.com.au/
My Documents Blog http://doc.coker.com.au/