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question about mounting external USB HD
by Ivan Arteaga 30 Oct '09

30 Oct '09

Hello, I have a server running CentOS 4.7 and I want to add a new USB-HD for backup some data. I made the file system as ext3 with the command: / mkfs -t ext3 /dev/sdb1/ After that I did add a new Volume Group and Logical Volume (/VolGrup01-LogVol01) /on that file system and mounted it as /backup. It worked fine but when I did reboot the server It wont mount /backup and I got the following error even after the system boots and I try to mount it manually: /mount: special device /dev/VolGrup01/LogVol01 does not exist/ I will appreciate any comment or suggestion about the best way to get through this. Regards, --Ivan.

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combining iptables parameters
by Marcus Moeller 30 Oct '09

30 Oct '09

Hi all, is there a way to combine iptables parameters like: iptables -A OUTPUT -p UDP & -p TCP -d $IP1 & -d $IP2 ? Best Regards Marcus

3 6

Upgrading Centos 5.3 -> 5.4
by Rohan Gilchrist 29 Oct '09

29 Oct '09

Still the same problems I'm afraid. I read the release notes and followed them to the letter. I'm now seeing: Finished Dependency Resolution lvm2-2.02.46-8.el5.i386 from base has depsolving problems --> Missing Dependency: device-mapper >= 1.02.32-1 is needed by package lvm2-2.02.46-8.el5.i386 (base) mkinitrd-5.1.19.6-54.i386 from base has depsolving problems --> Missing Dependency: device-mapper-multipath >= 0.4.7-9 is needed by package mkinitrd-5.1.19.6-54.i386 (base) lvm2-2.02.46-8.el5.i386 from base has depsolving problems --> Missing Dependency: device-mapper-event is needed by package lvm2-2.02.46-8.el5.i386 (base) Error: Missing Dependency: device-mapper-multipath >= 0.4.7-9 is needed by package mkinitrd-5.1.19.6-54.i386 (base) Error: Missing Dependency: device-mapper-event is needed by package lvm2-2.02.46-8.el5.i386 (base) Error: Missing Dependency: device-mapper >= 1.02.32-1 is needed by package lvm2-2.02.46-8.el5.i386 (base) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest I've installed package cleanup and tried the suggested combinations, except the --skip-broken option. Any thoughts are appreciated. Rohan.

2 4

printers... (HP)
by m.roth＠5-cent.us 29 Oct '09

29 Oct '09

I can't remember if I asked here - I've got more than one printer, HP, laser, builtin JetDirect. When I go there in a browser, I see the basic thing, but I can't get to the networking page. It says that it wants a password, no user name. It doesn't accept anything. Last week, a co-worker reset one to factory defaults... and it comes up with the same thing. Looking around on the Web, I don't see anything about a default password. Clues for the poor? mark

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Not able to FTP since 5.4
by Bob Hoffman 29 Oct '09

29 Oct '09

I do not use ftp much lately, but my bro did and noticed we cannot ftp to the server since the upgrade. Using VSFTP. Tried rebooting but nothing. Looks like it goes through the whole process and then 'bam'. Could not find an error log that listed the error anywhere. Worked great before 5.4 update, now it does not work at all. Here is the info from cuteftp. STATUS:> Getting listing "/"... STATUS:> Connecting to FTP server 72.35.68.61:21 (ip = 72.35.68.61)... STATUS:> Socket connected. Waiting for welcome message... 220 Welcome to the server STATUS:> Connected. Authenticating... COMMAND:> USER xxxxxxxx 331 Please specify the password. COMMAND:> PASS ***** 230 Login successful. STATUS:> Login successful. COMMAND:> PWD ERROR:> Can't read from control socket. Socket error = #10054. Any ideas? Thanks. Bob

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combining iptables parameters
by James B. Byrne 29 Oct '09

29 Oct '09

Message-ID: <fac47fca0910281232x71fbf92cva80095483d210db1(a)mail.gmail.com> On: Wed, 28 Oct 2009 20:32:14 +0100, Marcus Moeller <mail(a)marcus-moeller.de> wrote: > Hi all, > > is there a way to combine iptables parameters like: iptables > -A OUTPUT -p UDP & -p TCP -d $IP1 & -d $IP2 ? man iptables ... -p, --protocol [!] protocol The protocol of the rule or of the packet to check. The specified protocol can be one of tcp, udp, icmp, or all, or it can be a numeric value, representing one of these protocols or a different one. A protocol name from /etc/protocols is also allowed. A "!" argument before the protocol inverts the test. The number zero is equivalent to all. Protocol all will match with all protocols and is taken as default when this option is omitted. -s, --source [!] address[/mask] Source specification. Address can be either a network name, a hostname (please note that specifying any name to be resolved with a remote query such as DNS is a really bad idea), a network IP address (with /mask), or a plain IP address. The mask can be either a network mask or a plain number, specifying the number of 1s at the left side of the network mask. Thus, a mask of 24 is equivalent to 255.255.255.0. A "!" argument before the address specification inverts the sense of the address. The flag --src is an alias for this option. If both TCP and UDP are both to be blocked it may be inferred that no other protocol is desired to connect either, so simply not specifying any protocol will block all protocols including both TCP and UDP. If both are allowed then again there seems little purpose in blocking any others and again by not specifying any protocol you will obtain the desired result. If instead you do want to allow ICMP but nothing else then !icmp will match all protocols other than icmp. If IP1 and IP2 belong to a CIDR group and no intervening addresses are permitted access as well then a suitable netblock mask will archive the desired results. If not then each IP must be separately specified. So, something like this should work as a block for all protocols to either address: iptables -A OUTPUT -d $IP1 -j DROP iptables -A OUTPUT -d $IP2 -j DROP -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

2 1

VMware Server 2.0.1 On CentOS 5
by gene.poole＠macys.com 29 Oct '09

29 Oct '09

It's my understanding that CentOS is a carbon copy of Red Hat - with the exception of the art work. Assuming that this is true, the support matrix for VMware Server 2.0.1 states Red Hat 5.1. I cannot seem to locate a CentOS 5.1 x86-64 copy. I can get a copy of 5.3 and 5.4. If I take this route, what should I expect running VMware 2.0.1? Thanks, Gene Poole

7 11

problem with 5.4 x86_64 DVD iso?
by Greenseid, Joseph M (IS) 29 Oct '09

29 Oct '09

Hi all, I downloaded the 5.4 x86_64 DVD ISO this morning (CentOS-5.4-x86_64-bin-DVD.iso). However, the md5sum and sha1sums both don't match what's in the md5sum.txt or the release notes (http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.4) I downloaded two ISOs from two different mirrors, RIT and ANL, and both ISOs have the same checksums (match each other), which are different from the published md5sums and sha1sums. Was there a problem with the dissemination of the ISOs to the mirrors? I could understand one mirror having a problem, but two mirrors with the exact same broken image seems like it may be an upstream problem? Anyone have any idea what's up? Thanks, --Joe

2 2

vnc for non-root
by ken 29 Oct '09

29 Oct '09

At work I've been asked to set up vnc for a remote user (a vendor sysadmin to install 3d party software we've purchased). Of course I'm a bit skittish about allowing root access to this. Is there a way to configure vnc so that root cannot log in through it...? Or do I have to use some other utility to deny root access (e.g., securetty). Thanks, folks. -- War is a failure of the imagination. --William Blake

4 7

Infrastructure HELP!
by ML 29 Oct '09

29 Oct '09

Hi Everyone, I started a social networking site and I am getting ready to go live next week. I have limited fund as I am not funded yet (although hopefully soon). I have an extra Mac Pro (I know, how can I possibly call a Mac Pro dual 2.8 quad core with 16gb RAM extra). So Mac Pro quad Core, 16gb RAM, 4 x 1tb RAID level Seagate drives. I was going to load CentOS 5.4 on it, web, mysql etc, etc. This is really the only box I have that would handle the site it it takes off and then I would need to add more hardware and most hosting to RackSpace or something. My question is about initial setup. The 4 x 1TB drives. How to set this up for I have some protection? RAID 0+1? (striped + mirrored) I would end up with 2TB useable space. RAID 5? so what one is a hot spare? 3TB useable space? What about striping the 4 1TB and mirroring that to a 4 x 1tb External drive enclosure? I want to be sure the data is protected, but machine resources and money are limited. Thoughts are appreciated!

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