Discuss March 2010

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295 participants
261 discussions

Filter web content in a LAN ?
by Niki Kovacs 09 Mar '10

09 Mar '10

Hi, I installed a network of five desktops in a small town hall, all running CentOS 5.4. The machines are publicly, and the mayor asked me to find some solution to effectively filter web content, as the kids' first reflex is to visit the interesting bits of the Internet first, from satanism to porn. One of the machines will be set up as a router anyway, since the public computer room gets its internet access from the town hall, and I've decided to make another subnet for it. Any recommendations for that? Niki

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sed help
by chloe K 09 Mar '10

09 Mar '10

Hi Can I know how to use sed to substitue 2 instead of 1 at the same time? eg: sed 's/pchloe.com/abc.com/ ; /192.92.123.5/10.10.0.3/g' orgfile >> newfile thank you __________________________________________________________________ Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All-new Yahoo! Mail. Click on Options in Mail and switch to New Mail today or register for free at http://mail.yahoo.ca

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5.4 and tomcat5
by rray_1＠comcast.net 09 Mar '10

09 Mar '10

I set up a 5.4 server with tomcat5 All standard packages from CentOS repo I can not seem to access the tomcat manager from a remote host I can access the tomcat admin remotely I have a manager role and user defined in tomcat-users.xml Attempting to access the manager gets me HTTP Status 403 - Access to the requested resource has been denied type Status report message Access to the requested resource has been denied description Access to the specified resource (Access to the requested resource has been denied) has been forbidden. How do I enable remote access Thanks Richard

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OT: Binding NFS services to specific ip address
by carlopmart 09 Mar '10

09 Mar '10

Hi all, I have a CentOS 5.4 server with 3 interfaces used as a NAS (SMB, iSCSI and NFS). Is it possible to bind all NFS services (portmap, nfsd, mountd, etc) to a specific interface? Thanks. -- CL Martinez carlopmart {at} gmail {d0t} com

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proftpd wrap
by CList 09 Mar '10

09 Mar '10

Hi, My ftpd is being abused. Maximum login attempts exceeded from hosts: ::ffff:64.251.22.142[::ffff:64.251.22.142] : 24197 Time(s) I had came across an article stating that proftpd with mod wrap can actually block these IP using denyhosts. I had googled but I did not see any proftpd rpm with mod wrap. Is there anyone with a copy would like to share? Or can someone share a spec file, so I can roll my own rpm. I am running on CentOS 5.4. Thanks wL

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Re: [CentOS] Centos 5.4 DNS resolution issue
by Gaurav N. 09 Mar '10

09 Mar '10

UPDATE: I tried with FreeBSD8 as well and the DNS query didn't work. This is beginning to look more and more like an issue with my UTStarcom *WA3002G4 ADSL2+ Router and its NAT config or the lack of it.* * * *My setup and the ip addresses:* *Router 192.168.1.1* *Windows 192.168.1.2* *Centos 5.4 192.168.1.3* *FreeBSD8 192.168.1.4* * * *The windows host works fine with no issues with DNS queries.* Best Regards, Gaurav On Tue, Mar 9, 2010 at 12:08 AM, Gaurav Nangla <gaurav.knangla(a)gmail.com>wrote: > [root@cent5 ~]# dig www.google.com @208.67.220.220 > > ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5 <<>> www.google.com @ > 208.67.220.220 > ;; global options: printcmd > ;; connection timed out; no servers could be reached > > Best Regards, > Gaurav > > > > On Mon, Mar 8, 2010 at 5:21 PM, Pitshou Asingalembi <depitsho(a)yahoo.fr>wrote: > >> John R Pierce wrote: >> > Gaurav Nangla wrote: >> > >> >> I can ping the google.com <http://google.com> ip addresses >> >> (209.85.231.104) but can't ping the FQDN, obviously DNS is broken. >> >> >> >> I can also ping the nameserver ip addresses specified in >> /etc/resolv.conf. >> >> >> > >> > well, the DNS servers given by your resolv.conf output seem valid from >> > here.. I recommend doing some more debugging with `host` or similar DNS >> > diagnostic tools. >> > >> > note regular DNS lookups like these tend to use UDP rather than TCP, if >> > you're behind a NAT firewall which doesn't allow outbound udp port 53 >> > and connection track the response, then things might not work well. >> > >> > >> > $ host google.com 208.67.220.220 >> > Using domain server: >> > Name: 208.67.220.220 >> > Address: 208.67.220.220#53 >> > Aliases: >> > >> > google.com has address 74.125.19.105 >> > google.com has address 74.125.19.99 >> > google.com has address 74.125.19.103 >> > google.com has address 74.125.19.106 >> > google.com has address 74.125.19.147 >> > google.com has address 74.125.19.104 >> > google.com mail is handled by 400 google.com.s9b2.psmtp.com. >> > google.com mail is handled by 200 google.com.s9a2.psmtp.com. >> > google.com mail is handled by 300 google.com.s9b1.psmtp.com. >> > google.com mail is handled by 100 google.com.s9a1.psmtp.com. >> > >> > $ host google.com 208.67.222.222 >> > Using domain server: >> > Name: 208.67.222.222 >> > Address: 208.67.222.222#53 >> > Aliases: >> > >> > google.com has address 74.125.19.105 >> > google.com has address 74.125.19.147 >> > google.com has address 74.125.19.99 >> > google.com has address 74.125.19.103 >> > google.com has address 74.125.19.104 >> > google.com has address 74.125.19.106 >> > google.com mail is handled by 400 google.com.s9b2.psmtp.com. >> > google.com mail is handled by 200 google.com.s9a2.psmtp.com. >> > google.com mail is handled by 300 google.com.s9b1.psmtp.com. >> > google.com mail is handled by 100 google.com.s9a1.psmtp.com. >> > _______________________________________________ >> > CentOS mailing list >> > CentOS(a)centos.org >> > http://lists.centos.org/mailman/listinfo/centos >> > >> > >> please try: >> dig www.google.com @IPofyourDNSserver >> and send me the output >> _______________________________________________ >> CentOS mailing list >> CentOS(a)centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > >

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LVM & Stripe
by Lincoln Zuljewic Silva 09 Mar '10

09 Mar '10

Hello list, I have a question about LVM. My server has five disks and I will use it to create a LVM environment. I saw in the lvcreate man page that I can use the “-i” option to set the number of disks that I want to stripe the lvols, but this option doesn’t exists in the “lvchange” option (in case I add new disks to the VG). I had in mind: create 10 lvols – “lvcreate -i5 -L 10G MyVG /dev/MyVG/lvol[1-10]” and in the future, add more disks and increate the stripe value of the existing lvols. Does anybody knows how to change the parameter “-i" of a lvol that already exists? Best Regards Lincoln Zuljewic Silva More contact info.: http://www.system.adm.br/contact.php "How often must a question be asked before it’s considered a frequently asked question?"

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strange network problem
by Michael Schumacher 09 Mar '10

09 Mar '10

Hi, I am trying to fix a problem I have for about a week now. The environment is: --several independent servers with Centos5.4 on the latest patchlevel (example will be server2) All of them are working properly. --a machine with Xen installed to host some virtual machines (xenserver1) --domu servers on xenserver1 (crmserver1, winserver1) The whole network is connected with a Lancom router to a DSL line. Some days ago I noticed that server2 was updated properly, but xenserver1, crmserver1 and winserver were not updating the OS properly. They seemed to be cut off the internet. I can ping from all to all servers internally, I can ssh from all to all servers internally and I can browse the Internet from server2 successfully (using IP-numbers and hostnames), but xenserver1 and its domu clients could not connect to the internet. I checked the firewalls on xenserver, and crmserver1. They seemed to be OK and stopping them with "etc/init.d/iptables stop" didn't solve the problem. I can resolve hostnames: >[root@xenserver1 ~]# nslookup www.centos.org >Server: 192.168.1.1 >Address: 192.168.1.1#53 > >Non-authoritative answer: >Name: www.centos.org >Address: 72.232.194.162 but I cannot browse neither to "elinks http://www.centos.org" nor to 72.232.194.162, however, I can ping www.centos.org successfully. the network routes seem to be OK : >[root@xenserver1 ~]# route >Kernel IP routing table >Destination Gateway Genmask Flags Metric Ref Use Iface >10.1.1.0 * 255.255.255.0 U 0 0 0 eth1 >192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0 >169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 >192.168.0.0 * 255.255.0.0 U 0 0 0 eth0 >default LANCOM_1751_1.p 0.0.0.0 UG 0 0 0 eth0 (eth1 is a drbd interface) > [root@crmserver1 ~]# route > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > 169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 > 192.168.0.0 * 255.255.0.0 U 0 0 0 eth0 > default LANCOM_1751_1.p 0.0.0.0 UG 0 0 0 eth0 Has anybody any clue where to look? best regards --- Michael Schumacher PAMAS Partikelmess- und Analysesysteme GmbH Dieselstr.10, D-71277 Rutesheim Tel +49-7152-99630 Fax +49-7152-996333 Geschäftsführer: Gerhard Schreck Handelsregister B Stuttgart HRB 252024

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looking for lshw xml parser
by Alan McKay 09 Mar '10

09 Mar '10

Hey folks, Google brings up one concrete hit at http://chadsikorra.com/?p=96 but I contacted the author and he said it is buggy and needs a fair bit of work, so I decided against using it. That's about all I was able to come up with. Anything else out there? thanks, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

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Re: [CentOS] Recover RAID
by Jeff Sadino 09 Mar '10

09 Mar '10

I have access to all of the HEX data on each drive, and I now which sector each stripe starts at. Is there any way that I can reconstruct my data from that? When a file gets split up in RAID0, does the controller use the same sectors on each stripe to write the file parts? Thanks, Jeff On Wed, Mar 3, 2010 at 9:39 PM, Sorin Srbu <sorin.srbu(a)orgfarm.uu.se> wrote: > >-----Original Message----- > >From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On > Behalf > >Of Timo Schoeler > >Sent: Thursday, March 04, 2010 8:15 AM > >To: CentOS mailing list > >Subject: Re: [CentOS] Recover RAID > > > >>> Backups? I wish :) I will now. > >>[...] > >> Eh? Raid0 with no backups? For real? > > > >Backups are for sissies; running a hara-kiri RAID demands *not* having > >backups. Or did the kamikaze pilots have parachutes? > > 8-) > > Or as Linus Torvalds is said to have said; "Real men don't use backups, > they > post their stuff on a public ftp server and let the rest of the world make > copies." > > ;-) > -- > /Sorin > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > >

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Discuss March 2010