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Re: New ADSL line, new firewall..
by Petros 26 Nov '13

26 Nov '13

Quoting "Julien Goodwin" <jgoodwin(a)studio442.com.au> > On 25/11/13 17:45, Petros wrote: >> Hi, >> >> I have a new ADSL connection for our office, and a new firewall behind it. >> >> I pointed a proxy server (squid) to it, and.. it works most of the time. >> >> Just a few websites don't seem to like it. E.g.: >> >> 1385361294.211 18410 192.168.50.199 TCP_MISS/502 1217 GET >> http://www.zeit.de/index - DIRECT/217.13.68.220 text/html >> >> There are a few sites that don't work, most of the time it is a 502, >> occasionally a 504. >> >> I suspected the new firewall but cannot see any related packets >> dropped (and logged) there. > > Check that you haven't disabled the "forwarded for" setting in squid. Thanks, I will keep that in mind. However, the same config works on the ADSL line in production. I stripped back the whole network just to have my own PC directly on it. MTU to 1492, 100MBit/s full duplex to the NetComm NB9WAXXTLAN modem, no proxy or so - still the problem exists. Weird that only some worksites don't work.. it's a bit how a friend living over in China describes it - randomly some stuff is blocked. I hope we are not there yet.. Well, at the end I lodged a fault at the ISP. Will see what comes out of it. Sadly I did not catch the problem last weekend when installing. It frustrated people Monday morning so I moved back to the old line. Thanks again Peter

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Re: New ADSL line, new firewall..
by Petros 26 Nov '13

26 Nov '13

Quoting "Brian May" <brian(a)microcomaustralia.com.au> > On 26 November 2013 11:10, Petros < Petros.Listig(a)fdrive.com.au > wrote: > Do they have a transparent proxy? If so, their proxy might be > returning the 502/504 errors, not you. I should detect it when I do a "traceroute -P tcp -p 80 www.zeit.de" (sending port 80 packets)? The packets seem to go the same way as ICMP echos ("traceroute -I"), leaving Australia.. so I don't think so. (?) Regards Peter

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mysql transaction theory
by Brian May 26 Nov '13

26 Nov '13

Hello, If I have two transactions in two different sessions that execute a "INSERT INTO ..." of the same primary key into the one table, one session will wait for the other session to complete before being allowed to resume. Something like this obviously has to happen, Mysql has no idea of the first transaction is going to complete with "rollback" or "commit" and as such can't tell if the second INSERT should fail or not (conflicting primary key). It didn't match my limited understanding of how SQL transactions work however, and I would be interested to more about why the second process is blocked, and what the scope is for this block, etc. Anyone have any good references? The only thing I can find about transactions is that they are atomic, but nothing about transactions causing other processes to block. Is this the same for other non-mysql databases? Thanks -- Brian May <brian(a)microcomaustralia.com.au>

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New ADSL line, new firewall..
by Petros 25 Nov '13

25 Nov '13

Hi, I have a new ADSL connection for our office, and a new firewall behind it. I pointed a proxy server (squid) to it, and.. it works most of the time. Just a few websites don't seem to like it. E.g.: 1385361294.211 18410 192.168.50.199 TCP_MISS/502 1217 GET http://www.zeit.de/index - DIRECT/217.13.68.220 text/html There are a few sites that don't work, most of the time it is a 502, occasionally a 504. I suspected the new firewall but cannot see any related packets dropped (and logged) there. Thanks for any ideas Peter

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wifi card
by Bianca Gibson 25 Nov '13

25 Nov '13

Hi, I need a wifi card for my desktop computer. I'm looking for either a free one or recommendations for one to buy. I'd like any recommendations to be cheap, money is tight at the moment. I can pick it up at the next meeting. Cheers, Bianca

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Re: wifi card
by mjones11 23 Nov '13

23 Nov '13

Or you could get a usb device also around $40 and more portable between machines. -------- Original message -------- From: Jason White <jason(a)jasonjgw.net> Date: 23/11/2013 10:17 (GMT+10:00) To: luv-main@luv.asn.au,mlug-au@googlegroups.com Subject: Re: wifi card Bianca Gibson <bianca.rachel.gibson(a)gmail.com> wrote: > Hi, > I need a wifi card for my desktop computer. > I'm looking for either a free one or recommendations for one to buy. I'd > like any recommendations to be cheap, money is tight at the moment. If you have a PCI-Express slot available, you could buy a TP-LINK TL-WDN4800. I have one of these in my desktop machine, which I'm using as an access point with hostapd. $45 from msy.com.au as I recall. lspci shows 80:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter (rev 01) _______________________________________________ luv-main mailing list luv-main(a)luv.asn.au http://lists.luv.asn.au/listinfo/luv-main

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free hardware
by Russell Coker 20 Nov '13

20 Nov '13

Thinkpad 390E, unknown condition, didn't test because probably no-one will want it. ====== http://support.lenovo.com/en_AU/landing.page? Thinkpad T43 model 2668-C31 (put the model number into the above web site to get the specs). Below is a summary of the specs: Based 2668-4DU: P M 760(2.0GHz), 1GB RAM, 80GB HD, 14.1in 1400x1050 TFT LCD, 64MB ATI Radeon X300, CDRW/DVD, Intel 802.11abg wireless, Bluetooth/Modem, 1Gb Ether, UltraNav, Sec Chip, FPR, 9c Li-Ion batt, WinXP Pro It might have had more RAM or a bigger hard drive added. The system appears to be working correctly and boots Windows XP. I have to wipe it before I can give it away so you can't run Windows unless you have your own licensed copy. There is no PSU at this time but there's a good chance that I can get one in the next few days. ====== Two Wyse Winterms. I believe that they are touch-screen terminals for diskless operation on Windows networks. The model number is WT3820TX. They have hardly ever been used as the customer changed their mind and they sat on a shelf for ages. There is no PSU, they take DC 16V 3A ====== Let me know off-list if you want any of this. I can bring them to a LUV meeting or deliver them to some locations in and around the CBD or suburbs that I happen to visit. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Fwd: [Linux-aus] FLOSS 2013 Survey you may be interested in
by Bianca Gibson 19 Nov '13

19 Nov '13

---------- Forwarded message ---------- Hi everyone, You may be interested in the survey below The FLOSS 2013 survey In 2002, the first FLOSS survey was launched. With over 2500 participants, it was the first large survey of Free/Libre/Open Source developers around the world. This survey had major impact in the community, academia and politics. 10 years later we would like to replicate the survey in order to see how the community has changed. http://t.co/1df8p71n2A <end forwarded message> Cheers, Bianca

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Re: mysqld_safe seems unsafe
by Arjen Lentz 13 Nov '13

13 Nov '13

Some settings such as ulimit -n (open-files-limit) cannot be done from inside the daemon. Most other daemons fork themselves so the same mechanism for restarting is built in anyway. A signal 11 is always a bug, not normal or acceptable. So I trust you reported the backtraces from the errorlog? Regards, Arjen. -------- Original message -------- From: Russell Coker <russell(a)coker.com.au> Date: 08/11/2013 17:07 (GMT+10:00) To: luv-main(a)luv.asn.au Subject: mysqld_safe seems unsafe It's always a sign of low code quality when a daemon has a wrapper script to restart it when it crashes. Squid used to have such a script but for many years has been considered to be reliable enough not to need it. MySQL seems to be the only commonly used daemon with such a script. I had been wondering if the script was even needed, I would have hoped that mysqld was reliable many years ago. But I checked the logs of a RHEL4 system I run and found 19 log messages about mysqld getting signal 11 since 2006 of which the last one was 4 days ago. One problem with such scripts seems to be the issue of reliably shutting down the server. I have a ZFS system that doesn't always mount the filesystems on boot so I use /etc/rc.local to restart mysqld. That usually works apart from the time when I ended up with two copies of mysqld running at once. However mysqld uses file locking and it seems that you don't get data loss when you have two copies of it running at the same time (try not to test this theory on production networks). While it was handy that mysqld was restarted 19 times, it wasn't good that I was unaware of the problems. Is that script being used in the MySQL successors such as Drizzle? -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/ _______________________________________________ luv-main mailing list luv-main(a)luv.asn.au http://lists.luv.asn.au/listinfo/luv-main

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Fwd: [Linux-aus] Linux Australia Travel Grants
by Bianca Gibson 13 Nov '13

13 Nov '13

"Linux Australia and linux.conf.au 2014 are pleased to announce the 2014 travel grants programme. linux.conf.au strives to be a conference that is open and accessible to the whole open source community. We realise however that, no matter how we arrange the pricing for the conference, it will still be unaffordable for some members of the community. These grants aim to reduce the financial barriers to attending linux.conf.au2014, by subsidising the registration and travel costs of contributors to the community who would otherwise have difficulty affording the cost of attending the conference. Please go to http://travelgrants.linux.org.au/ to read more and/or put in an application. Applications are due by 15 November, and winners will be informed by 1 December. LCA Travel Grants Organisers Michael Still and Kylie Willison"

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