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Temperature sensor
by Bowie Bailey 27 Feb '10

27 Feb '10

Does anyone know of a cheap temperature sensor that will work with Linux? I don't need a fancy monitoring appliance, I just want a simple sensor that I can connect to one of my monitoring servers to let me know if the server room is getting hot. -- Bowie

17 30

Email Problem
by Susan Day 27 Feb '10

27 Feb '10

Hi; The following message appears to have been sent, but in fact never does reach their destination: [root qmail-send]# tail current @400000004b87b3d3392cbddc new msg 97881462 @400000004b87b3d3392cc5ac info msg 97881462: bytes 531 from < suzieprogrammer(a)gmail.com> qp 23629 uid 508 @400000004b87b3d33b7f700c starting delivery 4: msg 97881462 to remote suzieprogrammer(a)gmail.com @400000004b87b3d33b7f7bc4 status: local 0/10 remote 1/255 @400000004b87b3d4338aec64 delivery 4: success: 209.85.216.35_accepted_message./Remote_host_said:_250_2.0.0_OK_1267184586_6si3416200pxi.53/ @400000004b87b3d4338af434 status: local 0/10 remote 0/255 @400000004b87b3d4338d4dc4 end msg 97881462 [root qmail-send]# tail lock [root qmail-send]# tail state [root qmail-send]# ps wax|grep qmail 7759 ? S 0:00 supervise qmail-send 7761 ? S 0:00 supervise qmail-pop3d 7763 ? S 0:00 supervise qmail-smtpd 8011 pts/0 S+ 0:00 grep qmail 21589 ? S 0:00 qmail-send 21590 ? S 0:00 tcpserver -H -R -v -c100 0 110 qmail-popup mail.13gems.com /home/vpopmail/bin/vchkpw qmail-pop3d Maildir 21591 ? S 0:00 multilog t s100000 n20 /var/log/qmail/qmail-pop3d 21593 ? S 0:00 /usr/local/bin/tcpserver -v -R -l mail.13gems.com-x /etc/tcp.smtp.cdb -c 30 -u 508 -g 503 0 smtp /var/qmail/bin/qmail-smtpd mail.13gems.com /home/vpopmail/bin/vchkpw /usr/bin/true 21595 ? S 0:00 multilog t s100000 n20 /var/log/qmail/qmail-smtpd 21596 ? S 0:00 multilog t s100000 n20 /var/log/qmail/qmail-send 21597 ? S 0:00 qmail-lspawn ./Maildir 21598 ? S 0:00 qmail-rspawn 21601 ? S 0:00 qmail-clean [root qmail-send]# qmailctl stat /service/qmail-send: up (pid 21589) 60864 seconds /service/qmail-send/log: up (pid 21596) 60864 seconds /service/qmail-smtpd: up (pid 21593) 60864 seconds /service/qmail-smtpd/log: up (pid 21595) 60864 seconds /service/qmail-pop3d: up (pid 21590) 60864 seconds /service/qmail-pop3d/log: up (pid 21591) 60864 seconds messages in queue: 0 messages in queue but not yet preprocessed: 0 Why? TIA, Susan

17 41

SMARTD (?)
by m.roth＠5-cent.us 26 Feb '10

26 Feb '10

Ok, I saw more sectors on a drive yesterday, so this morning, no one was running on it, and I took it out of use, then bounced it onto a DVD, and ran fsck -c (check for bad blocks). It finished. I bounce the server. And SMARTD reports the sectors as "currently unreadable (pending) sectors", and "offline uncorrectable sectors". Does smartd cache its info somewhere, or is it reading what fsck already marked as bad? And this has happened before, under 5.3, and under continuing current updates of 5.4.... mark

4 5

mod_proxy and html rewriting
by Joseph L. Casale 26 Feb '10

26 Feb '10

Looks like proxying a site that uses dynamically generated urls that include the bound ip of the server needs a module to rewrite links in html. Are there any mods shipped in base that can do what mod_proxy_html mod_xml2enc can for this? Thanks, jlc

4 6

rkhunter doesn't remove temp suspscan files in /dev/shm
by Camron W. Fox 26 Feb '10

26 Feb '10

Alle, I know this is off-topic, so I apologize in advance, but we have installed rkhunter from EPEL (because it has the current version, 1.3.6 vice the 1.3.4 rpmforge version) on our CentOS machine and find that it does not remove the files in /dev/shm it uses for the SUSPSCAN test, this triggering a warning for said test. This was a known bug that was supposed to be have been fixed in V1.3.1. I can't find an EPEL mailing list to send the question to, so I'm hoping someone here can point me in the right direction. Best Regards, Camron -- Camron W. Fox Hilo Office High Performance Computing Group Fujitsu Management Services of America, Inc. E-mail: cwfox(a)us.fujitsu.com

1 0

Bandwith limiting
by Jason Pyeron 26 Feb '10

26 Feb '10

I found out how to limit all traffic on a give nic: [root@mirrors html]# tc qdisc add dev eth1 handle 1:0 root dsmark indices 1 default_index 0 [root@mirrors html]# tc qdisc add dev eth1 handle 2:0 parent 1:0 tbf burst 2048 limit 2048 mtu 1514 rate 3200bps But I do not know how to persist this. Trying to understand: http://www.redhat.com/mirrors/LDP/HOWTO/Traffic-Control-tcng-HTB-HOWTO/exam…. html And the following files: /etc/iproute2 /etc/iproute2/ematch_map /etc/iproute2/rt_dsfield /etc/iproute2/rt_protos /etc/iproute2/rt_realms /etc/iproute2/rt_scopes /etc/iproute2/rt_tables /etc/sysconfig/cbq /etc/sysconfig/cbq/avpkt /etc/sysconfig/cbq/cbq-0000.example I am lost. Any suggestions? -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.

3 3

question on kvm
by Jerry Geis 26 Feb '10

26 Feb '10

I had used and old kvm-87 on centos 5.4 x86_64 I was wanting ot update that and use the newer qemu-kvm-0.12.3 I downloaded that and everything was good there - but the kernel modules are not included. So I downloaded (or started to download) kvm-kvod something... but there is nothing there for 2.6.18? How do I get the correct 2.6.18 version? Jerry

1 1

getaddrinfo problem
by Susan Day 26 Feb '10

26 Feb '10

Hi; A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred. /var/www/html/mysite.com/simplemail/mail2.py 40 </head> 41 <body>''' 42 my_mail() 43 print ''' 44 </body> my_mail = <function my_mail> /var/www/html/mysite.com/simplemail/mail2.py in my_mail() 27 to_address = ourEmail, 28 subject = subject, 29 message = message 30 ).send() 31 print 'Thank you, %s, we will get back to you shortly!<br />' % (name) message = 'Name: beno -\nMessage: test' /var/www/html/mysite.com/simplemail/simplemail.py in send(self=<simplemail.Email object>) 344 smtp = smtplib.SMTP() 345 if self.smtp_server: 346 smtp.connect(self.smtp_server) 347 else: 348 smtp.connect() smtp = <smtplib.SMTP instance>, smtp.connect = <bound method SMTP.connect of <smtplib.SMTP instance>>, self = <simplemail.Email object>, self.smtp_server = 'localhost' /usr/lib64/python2.4/smtplib.py in connect(self=<smtplib.SMTP instance>, host='localhost', port=25) 305 if not self.sock: 306 raise socket.error, msg 307 (code, msg) = self.getreply() 308 if self.debuglevel > 0: print>>stderr, "connect:", msg 309 return (code, msg) code undefined, msg = 'getaddrinfo returns an empty list', self = <smtplib.SMTP instance>, self.getreply = <bound method SMTP.getreply of <smtplib.SMTP instance>> /usr/lib64/python2.4/smtplib.py in getreply(self=<smtplib.SMTP instance>) 349 if line == '': 350 self.close() 351 raise SMTPServerDisconnected("Connection unexpectedly closed") 352 if self.debuglevel > 0: print>>stderr, 'reply:', repr(line) 353 resp.append(line[4:].strip()) global SMTPServerDisconnected = <class smtplib.SMTPServerDisconnected> SMTPServerDisconnected: Connection unexpectedly closed args = ('Connection unexpectedly closed',) Notice that line: code undefined, msg = 'getaddrinfo returns an empty list', What up? How do I get an address to return? TIA, Susan

3 3

rack configurator?
by Alan McKay 26 Feb '10

26 Feb '10

Hey folks, Does anyone know of a rack configurator that runs on CentOS? It does not have to even be very fancy - immediately I'm just looking for an easy way to keep track of what is in my racks, and being able to have a visual of it. Maybe juggle stuff around. Bonus if it does power calculations based on model numbers and so on - or data I punch in for each model. But really right now some kind of very specific CAD or Draw tool that is specific to this purpose. Or a template for a more general tool. thanks, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

8 7

Re: [CentOS] Backuppc-updates on CentOS
by Les Mikesell 26 Feb '10

26 Feb '10

On 2/25/2010 3:44 AM, Sorin Srbu wrote: > Hi all, > > I installed BackupPC on one of my Centos 5.4-machines following the wiki at > http://wiki.centos.org/HowTos/BackupPC#head-725ed151d366bcf182cea92f765c373…, > where BackupPC is installed from the c5-testing repo. > > root@mach012 ~/ [0]# rpm -qa backuppc > backuppc-3.1.0-1.el5.centos > root@mach012 ~/ [0]# > > Seeing how there's been some updates to BackupPC in the near past, I thought > I'd run a yum update to get the updated package. That didn't work. So I > searched pbone.net for a BackupPC package on CentOS5 but didn't find any. > Doing the same search for RHEL5 gave me two packages (one for i386 and one for > x86_64); v3.1.0-5. > Looking more closely I saw that the RHEL5-packages were from epel, a repo one > maybe shouldn't choose as a primary repo for ones CentOS-systems if you can > help it. At least that's the impression I got from the various posts to this > list. No, epel is the best large 3rd party repo in terms of avoiding conflicts with the base. They are just not perfect. It's probably impossible to be perfect without a single point of coordination, but you generally won't get in trouble leaving epel enabled during updates unless you also use other 3rd party repos. They also tend not to have as current packages as rpmforge, though. > I thought all packages available from the prominent American upstream provider > got a treatment from the CentOS crew? Am I wrong or am I missing something > really basic, or some part of the CentOS philosophy here? Or isn't BackupPC a > package worthy of being CentOSified? 8-) There is (was?) a version in centos-testing, but now that epel has it, there isn't much reason to have a duplicate. -- Les Mikesell lesmikesell(a)gmail.com

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