Discuss August 2010

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250 participants
191 discussions

Web VNC Tool
by sync 30 Aug '10

30 Aug '10

Hi , guys: I have a thought of installing the web vnc tool for controling the vnc state . That is to say , If I use the firefox or IE browser to access this example website : http://test.com.cn; then I can see the all users' vnc state and I can stop or restart them . Could someone give me some suggestions? Thanks in advance ....

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why flash the terminal interface when loading the linux system?
by ganu MailList 29 Aug '10

29 Aug '10

I had set the initdefault as 5

6 10

Strange Apache log entry
by Gilbert Sebenste 29 Aug '10

29 Aug '10

Hey everyone, Logwatch flagged something in my Apache logs, and it says it was a possible successful probe. Hmmm. Here's what it says: --------------------- httpd Begin ------------------------ A total of 1 sites probed the server 66.249.137.70 A total of 2 possible successful probes were detected (the following URLs contain strings that match one or more of a listing of strings that indicate a possible exploit): 66.249.137.70 - - [21/Aug/2010:04:56:56 -0500] "GET /mystuff/?g=../../../../../../../../../../../../../../../proc/self/environ%00 HTTP/1.1" 200 5231 "-" "libwww-perl/5.810" 66.249.137.70 - - [21/Aug/2010:04:56:56 -0500] "GET /?g=../../../../../../../../../../../../../../../proc/self/environ%00 HTTP/1.1" 200 14169 "-" "libwww-perl/5.810" I didn't see anything on my server this morning, as I checked around it. Is this something to be concerned about? I'm fully patched (yum updated through this past week). Anybody else see this? ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** *******************************************************************************

9 22

Ignorant question on pam_shield
by Timothy Murphy 29 Aug '10

29 Aug '10

I've seen pam_shield recommended several times for protecting against malicious login attempts; but I'm not quite clear if this requires one to be already running some pam-based software? Also, I'm running shorewall, and would prefer a shorewall based protection, but the advice I read on googling for this seemed excessively complicated. -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

2 1

how to install oracle on centos 5.3
by ganu MailList 29 Aug '10

29 Aug '10

I try to set the kernel parameters but fails.

4 5

qemu
by mattias 29 Aug '10

29 Aug '10

Hello again I playing litle with qemu and networking I have read how to do it but can't get it work I use this command Qemu -net nic -net=tap,if=tap0 But will not work Something with option "if" is not valid for net The command looks so here Qemu -m 256 vpostmaster.mvdk -curses -net nic -net=tap,=if=tap0,script=no This commands are from centos wiki

2 2

Slow domain resolution problem
by Gabriel Tabares 28 Aug '10

28 Aug '10

Hi everyone, I've just joine the list as I am having an issue with our CentOS servers. The domain resolution is extremely slow from the application but doing an nslookup gives an immediate response. All the applications have the same issue, as do all the servers. I have been looking for the solution all over the web and all I have found are references to disabling ipv6. - By setting enable_ipv6 = no in /etc/sysconfig/network, which is already done on all the machines. - By blacklisting the ip6 module, which is not an option as it is used by the bonding module. Just for the sake of it, I tried it and, as expected, the bonding module did not come back up. If bad comes to worse, I could set up host entries for the main machines in /etc/hosts, but I really am trying to avoid that. Any suggestions? Thanks Gabriel Tabares

10 26

cfengine vs. puppet
by Ski Dawg 28 Aug '10

28 Aug '10

Hello All, I have been tasked with getting some configuration management system running at work. We have about 20 web servers running (some virtual and some physical), and we are trying to come up with a tool that will assist setting up new boxes as we bring them online, as well as maintaining existing systems when changes are necessary. After spending a little bit of time searching around today, I have run across 2 that seem like good options, cfengine and puppet. Does anyone have any thoughts about either of these tools? Is there definite advantage to using one over the other from your experience? Is there a another tool that I should be evaluating? -- Doug Registered Linux User #285548 (http://counter.li.org) ---------------------------------------- Never trust a computer you can't throw out a window. -- Steve Wozniak

10 21

[OT] Label Printer Recommendations
by Colin Coles 28 Aug '10

28 Aug '10

Greetings Folks, I am after any recommendations or experiences using Label printers to print barcodes with CentOS, we currently using Star TSP700's but they're not clear enough for the scanners we have. There seems to be plenty of choice but not much Linux support going on, 'Never had anyone ask for Linux drivers before..' seems to be the most common answer when trying to buy. I have also tried a Brother P-Touch QL-550 but can't seem to get that to print at all using the Foomatic drivers available online. TIA Colin.

4 5

Re: [CentOS] phpMyAdmin can't connect to remote server
by Brian Marshall 27 Aug '10

27 Aug '10

Hi All, I have had a thread about this going on the phpMyAdmin list for a little while. Nobody there has been able to shed any light on my problem. It seems that with phpMyAdmin I can not connect to remote servers. Though it also seems that apache, php and mysqli all work fine outside of phpMyAdmin. Below I have detailed my trouble shooting. This only seems to be an issue for me with CentOS 5 so I'm hoping someone out there has run into this before. I'm certain there is some setting or dependency I am missing so if you have any insight into this I'd greatly appreciate it. We have CentOS 5.5 production systems with a major Cloud VM vendor and I have replicated the results with CentOS 5.5 on local VM's (ISO install) with my own VM platform. The remote database server is listening on eth1. eth0 is our public routable IP and eth1 is our 10.x.x.x private subnet. We do not expose the mysql servers on the public interfaces. All of our web applications access the database servers by IP on the 10.x.x.x subnet on eth1. The apache server where phpmyadmin is installed also has other virtual hosts that have wordpress instances among other things, that use the mysqli interface to connect to the same remote database server and they all work fine. The apache server also has a local mysql server that I can successfully connect phpmyadmin to using localhost or 127.0.0.1 for the db host name with cookie authentication. The apache server where phpmyadmin is installed I can use the bash mysql client and connect to the remote database server with my credentials. I have tested CentOS 5.5 with RPM installed httpd and RPM installed PHP 5.1 and PMA 2.x, and CentOS 5.5 RPM installed Apache, my compiled PHP 5.2.3 and PMA 3.x. Both with the same result. Logins to any remote server over TCP with cookie auth fail with a "#1045 Cannot log in to the MySQL server" and tcpdump shows no packets on the interface to the DB server. Connections to the local database server via PMA 3.x, my compiled php 5.2 over tcp using localhost, port 3306, cookie auth connects right away. Connections to the local database server via PMA "mysqli://localhost:3306" shows no traffic in tcpdump on lo, eth0 or eth1 so I'm assuming it uses the local socket for this. I have tested Ubuntu 10 with Apt installed php, apache, mysqladmin and it all works out of the box. I would love to just throw ubuntu up there but work won't allow a mixed linux environment. It HAS to be CentOS. Just to make sure I am not crazy I made the test file below and connected to my remote database from the same virtualhost as phpmyadmin using the same username and password (not root). It works perfectly and I get the results from my mysql.user table. I have tested this php both from the CLI and through Apache. <?php $mysqli = new mysqli('10.x.x.x.', 'myuser', 'mypass', 'mysql'); $result = $mysqli->query( 'SELECT * from user'); while( $row = $result->fetch_assoc() ){ print_r($row); echo "\n"; } $result->close(); $mysqli->close(); ?> And my PMA config files look like this THIS DOES NOT WORK <?php /* * Generated configuration file * Generated by: phpMyAdmin 3.3.5 setup script by Piotr Przybylski <piotrprz(a)gmail.com> * Date: Thu, 26 Aug 2010 10:32:53 -0600 */ /* Servers configuration */ $i = 0; /* Server: glacier [1] */ $i++; $cfg['Servers'][$i]['auth_type'] = 'cookie'; $cfg['Servers'][$i]['host'] = '10.x.x.x'; $cfg['Servers'][$i]['extension'] = 'mysqli'; $cfg['Servers'][$i]['bookmarktable'] = 'pma_bookmark'; $cfg['Servers'][$i]['relation'] = 'pma_relation'; $cfg['Servers'][$i]['table_info'] = 'pma_table_info'; $cfg['Servers'][$i]['table_coords'] = 'pma_table_coords'; $cfg['Servers'][$i]['pdf_pages'] = 'pma_pdf_pages'; $cfg['Servers'][$i]['column_info'] = 'pma_column_info'; $cfg['Servers'][$i]['history'] = 'pma_history'; $cfg['Servers'][$i]['designer_coords'] = 'pma_designer_coords'; $cfg['Servers'][$i]['verbose'] = 'somename'; $cfg['Servers'][$i]['port'] = 3306; $cfg['Servers'][$i]['socket'] = ''; $cfg['Servers'][$i]['connect_type'] = 'tcp'; $cfg['Servers'][$i]['user'] = ''; $cfg['Servers'][$i]['password'] = ''; $cfg['Servers'][$i]['AllowRoot'] = false; $cfg['Servers'][$i]['AllowDeny'] = array ( 'order' => 'allow,deny', ); /* End of servers configuration */ $cfg['blowfish_secret'] = '4c74332d81b5c0.29678885'; $cfg['UploadDir'] = ''; $cfg['SaveDir'] = ''; $cfg['DefaultLang'] = 'en-utf-8'; $cfg['ServerDefault'] = 1; $cfg['ForceSSL'] = true; $cfg['AllowAnywhereRecoding'] = true; $cfg['UseDbSearch'] = false; $cfg['ShowPhpInfo'] = true; $cfg['LeftDisplayServers'] = true; $cfg['DisplayServersList'] = true; ?> THIS WORKS <?php /* * Generated configuration file * Generated by: phpMyAdmin 3.3.5 setup script by Piotr Przybylski <piotrprz(a)gmail.com> * Date: Thu, 26 Aug 2010 10:34:31 -0600 */ /* Servers configuration */ $i = 0; /* Server: localhost [1] */ $i++; $cfg['Servers'][$i]['verbose'] = 'localhost'; $cfg['Servers'][$i]['host'] = 'localhost'; $cfg['Servers'][$i]['port'] = 3306; $cfg['Servers'][$i]['socket'] = ''; $cfg['Servers'][$i]['connect_type'] = 'tcp'; $cfg['Servers'][$i]['extension'] = 'mysqli'; $cfg['Servers'][$i]['auth_type'] = 'cookie'; $cfg['Servers'][$i]['user'] = ''; $cfg['Servers'][$i]['password'] = ''; /* End of servers configuration */ $cfg['UploadDir'] = ''; $cfg['SaveDir'] = ''; $cfg['ForceSSL'] = true; $cfg['blowfish_secret'] = '0(s3$9dea5bfy7ic8wo4l8kn&is3ANFY6NA*CM64'; $cfg['MaxRows'] = 100; $cfg['DefaultLang'] = 'en-utf-8'; $cfg['ServerDefault'] = 1; ?> All that being said it looks like PHPMyAdmin does not run on CentOS (It feels crazy just to say that). I know there's something I'm missing. If anyone else has any insight or questions please let me know. I'm happy to experiment.

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Discuss August 2010