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Postfix - message queue filling with Host or name not found - try again
by Rob Kampen 27 Nov '10

27 Nov '10

Hi list, I have noted over the last week or so my DNS servers are dumping lots of messages for bogus domain lookups. Examining the postfix queue with postqueue -p: I see many (Host or domain name not found. Name service error for name=bdgiedjhea.po6e4ina.com type=MX: Host not found, try again) Jake(a)bdgiedjhea.po6e4ina.com My question - why does this stay in the message queue - why not dumped back with message undeliverable or dropped? I understand this is probably related to my config - which follows: <main.cf> queue_directory = /var/spool/postfix command_directory = /usr/sbin daemon_directory = /usr/libexec/postfix mail_owner = postfix myhostname = <mumble> mydomain = <mumble> myorigin = $mydomain inet_interfaces = all inet_protocols = ipv4 proxy_interfaces = <mumble> mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, mail.$mydomain, www.$mydomain, ftp.$mydomain unknown_local_recipient_reject_code = 550 mynetworks = 192.168.230.0/24, 127.0.0.0/8 relay_domains = virtual_alias_domains = hash:/etc/postfix/virtual_alias_domains virtual_alias_maps = hash:/etc/postfix/virtual_alias_maps smtpd_helo_required = yes smtpd_delay_reject = yes strict_rfc821_envelopes = yes smtpd_helo_restrictions = permit_mynetworks, reject_non_fqdn_helo_hostname, reject_invalid_helo_hostname, permit smtpd_sender_login_maps = hash:/etc/postfix/smtpd_sender_login_map smtpd_client_restrictions = check_client_access hash:/etc/postfix/access smtpd_recipient_restrictions = reject_unauth_pipelining, reject_non_fqdn_recipient, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unknown_recipient_domain, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_recipient_access hash:/etc/postfix/roleaccount_exceptions, reject_invalid_hostname, check_helo_access pcre:/etc/postfix/helo_checks, reject_rbl_client sbl-xbl.spamhaus.org, permit smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_sender smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes tls_random_exchange_name = /var/spool/postfix/prng_exch smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_use_tls = yes smtpd_tls_security_level = may smtpd_tls_auth_only = yes smtpd_tls_key_file = /etc/pki/tls/private/ssl.key.private.decrypted smtpd_tls_cert_file = /etc/pki/tls/certs/<mumble> smtpd_tls_CAfile = /etc/pki/tls/certs/sub.class2.server.ca.pem smptd_tls_loglevel = 2 smtpd_tls_received_header = yes smtpd_sasl_tls_security_options = noanonymous smtpd_sasl_security_options = noanonymous mailbox_size_limit = 102400000 message_size_limit = 40960000 in_flow_delay = 1s alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases home_mailbox = Maildir/ content_filter=amavisfeed:[127.0.0.1]:10024 debug_peer_level = 2 debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin xxgdb $daemon_directory/$process_name $process_id & sleep 5 sendmail_path = /usr/sbin/sendmail.postfix newaliases_path = /usr/bin/newaliases.postfix mailq_path = /usr/bin/mailq.postfix setgid_group = postdrop html_directory = no manpage_directory = /usr/share/man sample_directory = /usr/share/doc/postfix-2.2.2/samples readme_directory = /usr/share/doc/postfix-2.2.2/README_FILES </main.cf> Any suggestions appreciated. TIA rob

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CentOS-announce Digest, Vol 69, Issue 9
by centos-announce-request＠centos.org 27 Nov '10

27 Nov '10

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEBA-2010:0913 CentOS 5 x86_64 gtk2 Update (Karanbir Singh) 2. CEBA-2010:0913 CentOS 5 i386 gtk2 Update (Karanbir Singh) 3. CEBA-2010:0900 CentOS 5 i386 thunderbird Update (Karanbir Singh) 4. CEBA-2010:0900 CentOS 5 x86_64 thunderbird Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Fri, 26 Nov 2010 18:08:26 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0913 CentOS 5 x86_64 gtk2 Update To: centos-announce(a)centos.org Message-ID: <20101126180826.GA27443(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0913 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0913.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 1cc83a152509a74f6614308e42c6f43a gtk2-2.10.4-21.el5_5.6.i386.rpm 87c5c3a858d9d63f031fec320a6a547d gtk2-2.10.4-21.el5_5.6.x86_64.rpm 9286c99d64aaca8ca442c9cc5549b284 gtk2-devel-2.10.4-21.el5_5.6.i386.rpm e39c7a2371e7f5abdf4950fd173ad677 gtk2-devel-2.10.4-21.el5_5.6.x86_64.rpm Source: 2f26dac41203a95ac15d9cc74f039845 gtk2-2.10.4-21.el5_5.6.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Fri, 26 Nov 2010 18:08:26 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0913 CentOS 5 i386 gtk2 Update To: centos-announce(a)centos.org Message-ID: <20101126180826.GA27428(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0913 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0913.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 29b4a5cd2b0b3f6f1fe25e54d20ee01d gtk2-2.10.4-21.el5_5.6.i386.rpm e0d9866168342114db39d4fb5e5beeea gtk2-devel-2.10.4-21.el5_5.6.i386.rpm Source: 2f26dac41203a95ac15d9cc74f039845 gtk2-2.10.4-21.el5_5.6.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Sat, 27 Nov 2010 12:43:33 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0900 CentOS 5 i386 thunderbird Update To: centos-announce(a)centos.org Message-ID: <20101127124333.GA1984(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0900 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0900.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 5c69a7bc16453026ec7caa85216f0c9d thunderbird-2.0.0.24-12.el5.centos.i386.rpm Source: 32e3dae9627ae0b4caa3ce1a57c881cb thunderbird-2.0.0.24-12.el5.centos.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Sat, 27 Nov 2010 12:43:33 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CEBA-2010:0900 CentOS 5 x86_64 thunderbird Update To: centos-announce(a)centos.org Message-ID: <20101127124333.GA2001(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2010:0900 Upstream details at : https://rhn.redhat.com/errata/RHBA-2010-0900.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 11960f6689f559620bcedc18beae46a3 thunderbird-2.0.0.24-12.el5.centos.x86_64.rpm Source: 32e3dae9627ae0b4caa3ce1a57c881cb thunderbird-2.0.0.24-12.el5.centos.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 69, Issue 9 **********************************************

1 0

simple website hit counter
by Frank Cox 27 Nov '10

27 Nov '10

Googling for this finds me a ton of stuff that doesn't actually do what I'm looking for. I want a simple hit counter cgi script of some kind that will increment a counter on every page load but I want to access the counter from a different page. In other words, I don't want to have a visible hit counter on the webpage itself. I want to have a different webpage that will show me the number. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com

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Centos and Bridging
by Robert Spangler 27 Nov '10

27 Nov '10

Hello, Presently I am running CentOS release 5.5 (Final). I am looking to setup bridging as I would like to setup some KVM virtual hosts on my system as a test lab. I am following the the instruction at this site > http://tldp.org/HOWTO/BRIDGE-STP-HOWTO/index.html but I cannot figure out where I am going wrong and would be thankful if someone could point me in the right direction. Here is what I have done: Check bridge information with the following: > ~ $ modprobe -v bridge No issues or errors > ~ $ cat /proc/modules | grep bridge > bidge 91889 0 - Live 0xffffffff89247000 Check to ensure forwarding is turned on: > ~ $ cat /proc/sys/net/ipv4/ip_forward > 1 Checked that my interface are up and running (Was sure of this but did the check anyway): > ~ $ ifconfig > eth0 Link encap:Ethernet HWaddr 48:5B:39:2A:07:D5 > inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0 > inet6 addr: fe80::4a5b:39ff:fe2a:7d5/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:1059 errors:0 dropped:0 overruns:0 frame:0 > TX packets:1080 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:454226 (443.5 KiB) TX bytes:120584 (117.7 KiB) > Interrupt:90 Base address:0x8400 > > lo Link encap:Local Loopback > inet addr:127.0.0.1 Mask:255.0.0.0 > inet6 addr: ::1/128 Scope:Host > UP LOOPBACK RUNNING MTU:16436 Metric:1 > RX packets:92 errors:0 dropped:0 overruns:0 frame:0 > TX packets:92 errors:0 dropped:0 overruns:0 carrier:0[Thu Nov 25 So now I begin to create the bridge form CLI as I want to make sure everything works before committing it to the config: > brctl addbr br0 > ifconfig eth0 down > ifconfig br0 192.168.1.100 up > ifconfig eth0 0.0.0.0 up > route add default gw 192.168.1.254 I check my interfaces and routing: > ~ $ ifconfig > br0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 > inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0 > inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:0 errors:0 dropped:0 overruns:0 frame:0 > TX packets:5 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:0 (0.0 b) TX bytes:398 (398.0 b) > > eth0 Link encap:Ethernet HWaddr 48:5B:39:2A:07:D5 > inet6 addr: fe80::4a5b:39ff:fe2a:7d5/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:64662 errors:0 dropped:0 overruns:0 frame:0 > TX packets:63301 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:17699194 (16.8 MiB) TX bytes:7958063 (7.5 MiB) > Interrupt:90 Base address:0x8400 > > lo Link encap:Local Loopback > inet addr:127.0.0.1 Mask:255.0.0.0 > inet6 addr: ::1/128 Scope:Host > UP LOOPBACK RUNNING MTU:16436 Metric:1 > RX packets:211 errors:0 dropped:0 overruns:0 frame:0 > TX packets:211 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:0 > RX bytes:17346 (16.9 KiB) TX bytes:17346 (16.9 KiB) > ~ $ route -n > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 br0 > 0.0.0.0 192.168.1.254 0.0.0.0 UG 0 0 0 br0 Time to test if ping works: > ~ $ ping -c3 192.168.1.254 > PING 192.168.1.254 (192.168.1.254) 56(84) bytes of data. > ping: sendmsg: Operation not permitted > ping: sendmsg: Operation not permitted > ping: sendmsg: Operation not permitted > > --- 192.168.1.254 ping statistics --- > 3 packets transmitted, 0 received, 100% packet loss, time 2000ms I know the firewall is causing this issue so I stop the firewall: > ~ $ service iptables stop > Flushing firewall rules: [ OK ] > Setting chains to policy ACCEPT: nat filter [ OK ] > Unloading iptables modules: [ OK ] Time to try ping again: > ~ $ ping -c3 192.168.1.254 > PING 192.168.1.254 (192.168.1.254) 56(84) bytes of data. > From 192.168.1.100 icmp_seq=1 Destination Host Unreachable > From 192.168.1.100 icmp_seq=2 Destination Host Unreachable > From 192.168.1.100 icmp_seq=3 Destination Host Unreachable > > --- 192.168.1.254 ping statistics --- > 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 1999ms To back out all I needed to do was: > ifconfig br0 down > brctl delbr br0 > service iptables start > service netowrk restart Everything is back to normal. I cannot figure out what am I missing here? Interfaces and routing look to be setup correctly. Is there something else I need to be looking at? -- Regards Robert Linux The adventure of a life time. Linux User #296285 Get Counted http://counter.li.org/

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sed with several lines, how?
by Arthur Bela 27 Nov '10

27 Nov '10

hyphen's [ - ] are just for marking the start/end of a pattern, but there are _not in_ the pattern! "OUTPUT" is what i want after "seding" the PATTERN#X's so i for e.g.: need the first, and second "magic" sed "FIRSTMAGIC" PATTERN#1 sed "SECONDMAGIC" PATTERN#2 PATTERN#1: ----------------------------------- SOMETEXT#1 SOMETEXT#2 SOMETEXT#3 SOMETEXT#4 ----------------------------------- "exact pattern", what is unique from the pattern: ----------------------------------- \n ----------------------------------- OUTPUT: ----------------------------------- SOMETEXT#1 SOMETEXT#3 SOMETEXT#4 ----------------------------------- and: PATTERN#2: ----------------------------------- SOMETEXT#1 SOMETEXT#2 </div></body></html> SOMETEXT#3 ----------------------------------- "exact pattern", what is unique from the pattern: ----------------------------------- \n</div></body></html> ----------------------------------- OUTPUT: ----------------------------------- SOMETEXT#1 </div></body></html> SOMETEXT#3 ----------------------------------- i just can't figure it out, how to "sed" when having several lines [nor in awk, perl..] could anyone post a link, or some guide, how to write these two lines of "sed"? Thank You! :\

2 2

experience with Sympa to Mailman?
by Dave Stevens 27 Nov '10

27 Nov '10

I have a Centos 5.5 box with Mailman installed. A new user will host lists using Mailman, moving from a Sympa based host. Sympa isn't in the repos, does anyone know why? or have any experience moving the archive from Sympa to Mailman? Dave

2 1

Checking what's running inside a httpd process
by Pascal Robert 26 Nov '10

26 Nov '10

I'm trying to fix a CentOS (5.5 x86_64) VM that we have where it become unstable due to swapping. But I did notice something: I have 10 httpd processes, and 5 of them are using 13 MB of resident memory, the other are using between 91 and 96 MB of RAM. I find it quite strange to see such differences in RAM usage. I ran a "lsof -P -p" on the processes, and I didn't see any major differences, so I'm wondering what is the best way to know what the processes are doing?

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Re: [CentOS] Add application to start at booting
by sheraznaz＠yahoo.com 26 Nov '10

26 Nov '10

This was recently answered in another thread <Quote> Re: [CentOS] best way to start and shutdown programs in CentOS? On 24 November 2010 14:20, killscript <killscript(a)gmail.com> wrote: > Les Mikesell wrote: >> The RedHat/Centos way of doing things is to have init scripts in >> /etc/rc.d/init.d that take at least start, stop, and restart as arguments for >> each program that should start automatically. Then for the runlevels where you >> want them to start you have a symlink where the name starts with S and the rest >> is a number to make it sort alphabetically into the order that things should >> start in /etc/rc?.d (where the ? is the runlevel). Likewise add links starting >> with 'K' in the levels where the process should be stopped. There is a >> convention for comments in the scripts so that 'checkconfig program on' can make >> the links for you. Look through some of the other scripts to see how they work. > > Sorry for the stupid question here, but does the /etc/initd./scriptname > file "know" about these symlinks because of a particular comment in there? Copied from the man file for chkconfig: RUNLEVEL FILES Each service which should be manageable by chkconfig needs two or more commented lines added to its init.d script. The first line tells chkconfig what runlevels the service should be started in by default, as well as the start and stop priority levels. If the service should not, by default, be started in any runlevels, a - should be used in place of the runlevels list. The sec- ond line contains a description for the service, and may be extended across multiple lines with backslash continuation. For example, random.init has these three lines: # chkconfig: 2345 20 80 # description: Saves and restores system entropy pool for \ # higher quality random number generation. This says that the random script should be started in levels 2, 3, 4, and 5, that its start priority should be 20, and that its stop priority should be 80. You should be able to figure out what the description says; the \ causes the line to be continued. The extra space in front of the line is ignored. Basically, create your file by taking one of the files as a sample and place it in /etc/init.d. For example, I've copied /etc/init.d/vncserver to /etc/init.d/sample and ran [root@hakan init.d]# chkconfig --add sample [root@hakan init.d]# chkconfig --list|grep sample sample 0:off 1:off 2:off 3:off 4:off 5:off 6:off Now my sample is there but won't run at all but it's all there. [root@hakan init.d]# chkconfig sample on [root@hakan init.d]# chkconfig --list|grep sample sample 0:off 1:off 2:on 3:on 4:on 5:on 6:off Now it's on for all of the levels in the comment included in the file. Nevertheless, I could have overriden that with the ckconfig --level <levels> <name> on command options to run on other levels. [root@hakan etc]# find rc* -iname *sample*|sort rc.d/init.d/sample rc.d/rc0.d/K35sample rc.d/rc1.d/K35sample rc.d/rc2.d/S91sample rc.d/rc3.d/S91sample rc.d/rc4.d/S91sample rc.d/rc5.d/S91sample rc.d/rc6.d/K35sample and the file comment looks like below which matches the above, startup priority is 91, kill priority is 35. It will run on all normal levels since it's not defined, excluding 1 (single user), 0 (shutdown) and 6 (reboot). # chkconfig: - 91 35 I better remove this sample from my startup :) -- Hakan (m1fcj) - http://www.hititgunesi.org _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ------Original Message------ From: Johan Scheepers Sender: centos-bounces(a)centos.org To: centos ReplyTo: CentOS mailing list Subject: [CentOS] Add application to start at booting Sent: Nov 25, 2010 10:45 AM Good day, Please, How/where can I add an application to start at boot up. Don't seem to find it in options available Thanks Johan _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos Sent from my Verizon Wireless BlackBerry

4 3

How to install PHP PEAR stuff best?
by Alexander Farber 26 Nov '10

26 Nov '10

Hello CentOS users, I'm using gChartPhp by having copied it into /var/www/html dir. It works ok, but I wonder how to better install/organize/maintain PEAR "packages" under CentOS? I've got the php-pecl rpm installed too, wonder if it's helpful here. Or maybe just add a dir to php.ini? Please share your PHP "admin" wisdom Regards Alex -- Sent from my mobile device

4 5

Re: [CentOS] good shell script examples?
by 洪　川 26 Nov '10

26 Nov '10

#!/bin/bash H=" 192.168.1.1 192.168.1.2 192.168.1.3 192.168.1.4 " for i in $H ; do expect << -EOF- set timeout 2 spawn scp ${rootidfile} root@${host}:/tmp/id_file expect "d:" send "${password}\n" expect eof spawn ssh ${host} expect "d:" send "${password}\n" expect "#" send "mkdir -p /root/.ssh; chmod 700 /root/.ssh\n" expect "#" send "cat /tmp/id_file >> /root/.ssh/authorized_keys\n" expect "#" send "rm -f /tmp/id_file; exit\n" expect eof -EOF- done http://www.bsdmap.com/2010/11/06/ssh-shell-script/ ------------------ Original ------------------ From: "Kill Script"<killscript(a)gmail.com>; Date: Tue, Nov 16, 2010 02:47 AM To: "centos"<centos(a)centos.org>; Subject: [CentOS] good shell script examples? I am looking for a beginner guide to shell scripting simple tasks on CentOS (e.g. ssh'ing into a server / router / switch, checking for certain things, then exiting and going to the next IP). Does anyone have any suggestions on where to look? ?(I'm relatively new to bash)

2 1

Terminal - name too long
by Johan Scheepers 26 Nov '10

26 Nov '10

Good day, > [johan@unknown2a6800000000 ~]$ How/where could I make the above a lot shorter please. Thanks Johan

4 6

centos 5.5 -software updater-break in download
by Johan Scheepers 26 Nov '10

26 Nov '10

Good day, New to centos, New install . Using - Software updater While updating - downloading 73 updates there was a break in the download. The break happened close to the end. Now when using software updater again will it start all over again? Go on where the break happened? Could not find on google this issue Kindly some advice please. Thanks, Regards Johan

3 2

CentOS vs. RHEL vs. Oracle Linux ?
by Niki Kovacs 26 Nov '10

26 Nov '10

Hi, I've been contacted by a local training center specialized in Oracle databases, to train a group of four administrators to use Linux. They're supposed to use Oracle Linux (more exactly "OL5"), which I understand is some specialized version of Red Hat Enterprise Linux. I'm reasonably proficient with CentOS. I've been using it exclusively on desktops and servers since 2007 (version 4.3 if I remember correctly), after a few years on Slackware and Debian. I've setup CentOS-based networks in small town halls, public libraries and schools, my dedicated webserver is running the latest CentOS, and I've published a book about basic Linux concepts entirely based on CentOS 5.3. On the other hand, I've never got to work on the "real thing", so to speak. The only time I put my hands on a Red Hat Enterprise Linux server was to retrieve the root password for a distracted client (add init=/bin/bash to the kernel line in GRUB, mount -o remount,rw /, passwd :oD). And I never came near a machine running Oracle Linux. What differences can I expect between a server running Oracle Linux and my average server running CentOS ? As far as I can guess, their "unbreakable" Linux kernel will still be some package called 'kernel' (with the according 'kernel-devel' and 'kernel-headers' packages). Probably Yum will be used as a dependency resolver (will it?), only with different repositories. And for the rest, I except it to work the same, in that I can still use chkconfig, ntsysv, rpm, etc. (what about system-config-securitylevel-tui or similar tools?) In short, what differences/similarities can I expect? Is there some document stating these? Cheers from the sunny South of France, Niki Kovacs -- http://www.microlinux.fr

6 9

PE850 Interrupt conflicts on CentOS 5 and onboard ethernet and pci-e serial
by Dan Irwin 26 Nov '10

26 Nov '10

Hello, I have an interrupt conflict between a two port pci-e serial card and the onboard ethernet controllers in a PowerEdge 850. I'm running kernel 2.6.18-194.26.1.el5PAE with bios revision A04. In every instance, the two serial ports have been allocated the same interrupts as the two ethernet controllers. I have tried many kernel boot options, including acpi=off, pci=noirq, acpi=noirq. When I enter the bios, I can see the same interrupts allocated to the serial ports and ethernet controllers. Attempting to change the interrupts manual causes both a nic and a serial port to both change, both to the same interrupt. I have even tried disabling onboard usb and serial with no change. I'm beginning to think the pci-e serial card is broken under linux. I have a similar card running on a PE850 under Windows Server 2003 and there are no such conflicts. Here is some output from lspci -v : 02:00.0 Serial controller: Oxford Semiconductor Ltd OX16PCI954 (Quad 16950 UART) function 0 (Uart) (prog-if 06 [16950]) Subsystem: Oxford Semiconductor Ltd Unknown device 0001 Flags: medium devsel, IRQ 137 I/O ports at ecf8 [size=8] Memory at feaff000 (32-bit, non-prefetchable) [size=4K] I/O ports at ece0 [size=16] Memory at feafe000 (32-bit, non-prefetchable) [size=4K] Memory at feafd000 (32-bit, non-prefetchable) [size=4K] Capabilities: [40] Power Management version 1 02:01.0 Serial controller: Oxford Semiconductor Ltd OXCB950 Cardbus 16950 UART (prog-if 06 [16950]) Subsystem: Oxford Semiconductor Ltd Unknown device 0001 Flags: medium devsel, IRQ 145 I/O ports at ecf0 [disabled] [size=8] Memory at feafc000 (32-bit, non-prefetchable) [disabled] [size=4K] I/O ports at ecd0 [disabled] [size=16] Memory at feafb000 (32-bit, non-prefetchable) [disabled] [size=4K] Memory at feafa000 (32-bit, non-prefetchable) [disabled] [size=4K] Capabilities: [40] Power Management version 1 05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethe rnet PCI Express (rev 11) Subsystem: Dell Unknown device 01b6 Flags: bus master, fast devsel, latency 0, IRQ 137 Memory at fe5f0000 (64-bit, non-prefetchable) [size=64K] Expansion ROM at <ignored> [disabled] Capabilities: [48] Power Management version 2 Capabilities: [50] Vital Product Data Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3 Enable - Capabilities: [d0] Express Endpoint IRQ 0 Capabilities: [100] Advanced Error Reporting Capabilities: [13c] Virtual Channel 06:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethe rnet PCI Express (rev 11) Subsystem: Dell Unknown device 01b6 Flags: bus master, fast devsel, latency 0, IRQ 145 Memory at fe3f0000 (64-bit, non-prefetchable) [size=64K] Expansion ROM at <ignored> [disabled] Capabilities: [48] Power Management version 2 Capabilities: [50] Vital Product Data Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3 Enable - Capabilities: [d0] Express Endpoint IRQ 0 Capabilities: [100] Advanced Error Reporting Capabilities: [13c] Virtual Channel I'm fairly stumped, and I'm about ready to try different serial hardware. Any clues from the experts on this list? Regards, Dan ------ dan irwin it manager jackie's wholesale nurseries p/l t/a zoomgarden 56 coutts drive burpengary qld 4505 email dan(a)jackies.com.au tel 07 3888 2481 fax 07 3888 2530 ************************************************************************ Jackie's Legal Disclaimer: 1) This email is confidential and may contain legally privileged information. If you are not the intended recipient, you must not disclose or use the information contained in it. If you have received this email in error, please notify us immediately by return email and delete the document. 2) All emails sent to and from Jackie's Wholesale Nurseries Pty Ltd. are scanned for content. Any material deemed to contain inappropriate subject matter will be reported to the email administrator of all parties concerned. ************************************************************************

2 3

set and lengthen time between screensavers
by Johan Scheepers 25 Nov '10

25 Nov '10

Good day, I am the only user of the laptop at home. Please, How/where can I change to keep to screen longer open. Thanks Johan

2 2

Add application to start at booting
by Johan Scheepers 25 Nov '10

25 Nov '10

Good day, Please, How/where can I add an application to start at boot up. Don't seem to find it in options available Thanks Johan

3 3

CENTOS 5.5 X86 continue get "out of memory" error?????
by mcclnx mcc 25 Nov '10

25 Nov '10

we just installed CENTOS 5.5 X86 (32 bits) on DELL server. After installed we also apply lated O.S. patches. This server have 64 GB RAM and run "2.6.18-194.26.1.el5PAE #1 SMP ". when I doing "cp", "mv". "ftp", .... it continue "kill" my process and pop up "out of memory" on /var/log/messages: ========================================================== Nov 24 16:36:25 MCC kernel: HighMem: 1*4kB 0*8kB 1*16kB 3210*32kB 17367*64kB 4010*128kB 2497*256kB 126*512kB 2*1024kB 0*2048kB 10549*4096kB = 45642004kB Nov 24 16:36:25 MCC kernel: 4927968 pagecache pages Nov 24 16:36:25 MCC kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 24 16:36:25 MCC kernel: Free swap = 36869116kB Nov 24 16:36:25 MCC kernel: Total swap = 36869116kB Nov 24 16:36:25 MCC kernel: Free swap: 36869116kB Nov 24 16:36:25 MCC kernel: 16777216 pages of RAM Nov 24 16:36:25 MCC kernel: 16547840 pages of HIGHMEM Nov 24 16:36:25 MCC kernel: 362985 reserved pages Nov 24 16:36:25 MCC kernel: 3334251 pages shared Nov 24 16:36:25 MCC kernel: 0 pages swap cached Nov 24 16:36:25 MCC kernel: 839171 pages dirty Nov 24 16:36:25 MCC kernel: 2 pages writeback Nov 24 16:36:25 MCC kernel: 3528 pages mapped Nov 24 16:36:25 MCC kernel: 59119 pages slab Nov 24 16:36:25 MCC kernel: 584 pages pagetables Nov 24 16:36:25 MCC kernel: Out of memory: Killed process 5114, UID 81, (dbus-daemon). Nov 24 16:37:11 MCC gpm[5531]: *** info [client.c(137)]: Nov 24 16:37:11 MCC gpm[5531]: Connecting at fd 6 =================================================== any one know why? Is CENTOS X86 5..5 really NOT stable version? Thanks.

10 16

New list ?
by Karanbir Singh 25 Nov '10

25 Nov '10

Hi, Taking this to a new thread. Thoughts on getting a new list started up ? Should it be centos-sysadmin or centos-infra ? Are we going to then restrict it to admin/infra related chatter ? in which case, does the eyeball density on this list reduce for that sort of content ? How about the politics and news stuff that gets posted to this list. And how would those things be addressed with the new admin focused list ? - KB

16 21

Novell sale news?
by Les Mikesell 25 Nov '10

25 Nov '10

Is anyone following the news of the Novell sale and some mysterious 'intellectual property assets' that were transferred to a holding company controlled by Microsoft? -- Les Mikesell lesmikesell(a)gmail.com

28 58

(no subject)
by 清水大輔 25 Nov '10

25 Nov '10

-- 清水大輔 <shimizu.daisuke(a)mycom.co.jp>

1 0

Grub, pata, and sata
by David G. Mackay 24 Nov '10

24 Nov '10

I've just filed bug 0004634. Grub won't install onto my pata drive now that I have a sata drive installed. This is grub 0.97 on CentOS5.5. Has anyone else encountered this? I'm guessing that I can always install Fedora on hda, which should give me a working grub, but I was hoping for something a little less involved. Thanks, Dave Mackay

4 7

best way to start and shutdown programs in CentOS?
by Kill Script 24 Nov '10

24 Nov '10

I have a Java program that I want to start up with every boot, but I'm unsure how to do it. There are two bootup scripts that start manually (script1.sh and script2.sh), and when the server gets shutdown, we have another script that we run (shutdownscript.sh) so that the DB does not get corrupted.

9 17

Gnome 2.32 backported to RHEL6
by Sergio Rubio 24 Nov '10

24 Nov '10

Hi all, In case anyone is interested, I´ve backported Gnome 2.32 from F14 to RHEL6 for my own good : http://blog.frameos.org/2010/11/24/installing-gnome-2-32-in-red-hat-enterpr… Packages tagged with frameos in the release version have been patched by my self. Sources: http://mirror.frameos.org/frameos/6/experimental/SRPMS/ Enjoy! -- FrameOS Linux website: http://www.frameos.org <http://www.frameos.org> twitter: @rubiojr blog: http://blog.frameos.org

1 0

program in centos rpm
by ann kok 24 Nov '10

24 Nov '10

Hi all I can't find some program eg: fping rpm in centos 1/ How can I get this program install if yum won't find it? 2/ Can I use fedora12 fping rpm to install on it? Thank you

4 3

Centos 5.5 - php53 and mhash
by For＠ll 24 Nov '10

24 Nov '10

Hi, I'm using repo from http://dl.iuscommunity.org/ and I want use php5.3 but I can't see module php53-mhash, where I find this module? Any repo can I use where this module I find? For@ll

4 3

CentOS 5.5: what do /etc/sysconfig/networking and /etc/sysconfig/network-scripts exactly ?
by giggzounet 24 Nov '10

24 Nov '10

Hi, on our cluster we have 5 network interfaces. I was surprised to discover that the ifcfd-* files under /etc/sysconfig/networking and /etc/sysconfig/network-scripts were not the same. So I have searched a little bit, but I'm now confused: - the files under /etc/sysconfig/networking come from system-config-network. - the files under /etc/sysconfig/network-scripts are read by the /etc/init.d/network script and used to set up the network interfaces. - I don't find where the files under /etc/sysconfig/networking are used. - Does system-config-network modify the file under /etc/sysconfig/network-scripts too ? Is there someone who can enlightenment me ? Thx in advance, Best regards, Guillaume

7 9

DNS update system-config-network GUI
by Lanny Marcus 24 Nov '10

24 Nov '10

Box is fully updated CentOS 5.5 (32 bit). DHCP is from the ADSL modem 192.168.1.1. After I update the DNS settings and restart the network, the DNS changes do not hold. I have tried using this GUI, as a regular user, after giving the root password, and, also, logged in as the root user. When I begin, the Primary DNS is shown as 192.168.1.1 the IP of the ADSL modem. I move that IP to the Tertiary DNS and insert the Primary and Secondary DNS IP's I want to use. Then, I save the file, quit, and restart the network (service network restart). I see messages that the file has been saved and suggesting that I restart the network or the box. The DNS I want to use is that of OpenDNS.com and I saw it work, briefly.Then,it stops working and when I launch the system-config-network GUI again, I see it has reverted to the original configuration, with only the Primary DNS of 192.168.1.1 (the ADSL modem) shown. Questions: The "DNS Search Path" is blank. Is there something I should insert there? If it appears that I am using the system-config-network GUI properly, what configuration file can I modify, to make these DNS changes hold permanently? TIA! Lanny http://www.magazines-magazine.com/

4 5

slow network throughput, how to improve?
by Rudi Ahlers 24 Nov '10

24 Nov '10

would like some input on this one please. Two CentOS 5.5 XEN servers, with 1GB NIC's, connected to a 1GB switch transfer files to each other at about 30MB/s between each other. Both servers have the following setup: CentOS 5.5 x64 XEN 1GB NIC's 7200rpm SATA HDD's The hardware configuration can't change, I need to use these servers as they are. They are both used in production with a few xen domU's virtual machines running on them. I want to connect them both to a SAN, with gigabit connectivity and would like to know how I can increase network performance a bit, as is. The upstream datacentre only supplies 100MB network connection, so in the internet side of it isn't much of a problem. If I do manage to reach 100MB that will be my limit in any case. root@zaxen02.securehosting.co.za:/vm/xen/template/centos-5-x64-cpanel root@zaxen02.securehosting.co.za:/ root(a)zaxen02.securehosting.co.za's password: centos-5-x64-cpanel.tar.gz 100% 1163MB 29.1MB/s 00:40 iperf indicates that the network throughput is about 930MB though: root@zaxen01:[~]$ iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 4] local 196.34.x.x port 5001 connected with 196.34.x.x port 45453 [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.0 sec 1.09 GBytes 935 Mbits/sec root@zaxen02:[~]$ iperf -c zaxen01 ------------------------------------------------------------ Client connecting to zaxen01, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 3] local 196.34.x.x port 45453 connected with 196.34.x.x port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.09 GBytes 936 Mbits/sec Is iperf really that accurate, or reliable in this instance, since the packet size is so small that it probably goes straight to memory, instead of HDD? But at the same time, changing the packet size to 10MB, 100MB and 1000MB respectively doesn't seem to degrade performance much either: root@zaxen02:[~]$ iperf -w 10M -c zaxen01 ------------------------------------------------------------ Client connecting to zaxen01, TCP port 5001 TCP window size: 256 KByte (WARNING: requested 10.0 MByte) ------------------------------------------------------------ [ 3] local 196.34.x.x port 36756 connected with 196.34.x.x port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.07 GBytes 921 Mbits/sec root@zaxen02:[~]$ iperf -w 100M -c zaxen01 ------------------------------------------------------------ Client connecting to zaxen01, TCP port 5001 TCP window size: 256 KByte (WARNING: requested 100 MByte) ------------------------------------------------------------ [ 3] local 196.34.x.x port 36757 connected with 196.34.x.x9 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.08 GBytes 927 Mbits/sec root@zaxen02:[~]$ iperf -w 1000M -c zaxen01 ------------------------------------------------------------ Client connecting to zaxen01, TCP port 5001 TCP window size: 256 KByte (WARNING: requested 1000 MByte) ------------------------------------------------------------ [ 3] local 196.34.x.x port 36758 connected with 196.34.x.x port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.04 GBytes 895 Mbits/sec -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

3 4

Router for SOHO network - hardware considerations
by Niki Kovacs 24 Nov '10

24 Nov '10

Hi, Last week I finished installing a small network in a private school : one server (an old IBM X225), seventeen desktops (Fujitsu Siemens PIV 2.4 GHZ, 512 MB RAM, 40 GB HD), all running CentOS 5.5. One extra machine is acting as a router, in that it is installed between the DSL modem and the network, with two Ethernet cards, and it's taking care of DHCP, DNS, NTP and also acts like a proxy (with Squid). It seems quite big and noisy and electricity-consuming to me, so I wonder if there is any small device that could possibly do the job as good, but which would me more adapted : small, solid and cheap (if possible). I imagine some tiny box just with a CPU and a small harddisk, a little RAM and two network interfaces (one out, one in), where I could install a very stripped-down CentOS, and then just forget about it. So far, I've googled a bit, and I've found two things: 1) Pyramid Soekris boards, where I can put something like Pyramid Linux on it. And 2) The Linksys WRT54GL, for which there are Linux firmwares like OpenWRT and DD-WRT. Is there anything you could especially recommend for this job? (I'm not afraid of getting my hands dirty, BTW :oD) Cheers, Niki

13 14

Boot failure after install on IBM x3550 M3
by Toralf Lund 24 Nov '10

24 Nov '10

I'm trying to install CentOS 5.5 on a couple of servers of type IBM System x3550 M3, but it's not going too well. Actually, the install setup phase runs as expected, and the actual installation also appears to be successful, but the system will not boot - I just get a message (presumably) from BIOS saying that boot from hard disk 0. If I start the installer again after this, or boot rescue mode off the install DVD, the installation is correctly found, however. Does anyone have any idea what may cause this and/or how I can fix the problem? Or is there at least anyone out there who has tried CentOS on the same type of hardware? Note that I've tried (re)installing several times, and also tested CentOS 5.4, but the result is always the same. I've also used CentOS without any problems on an x3550 M2, i.e. a slightly older variant of the hardware. I've (so far) installed with the default disk layout and package selection. - Toralf This e-mail, including any attachments and response string, may contain proprietary information which is confidential and may be legally privileged. It is for the intended recipient only. If you are not the intended recipient or transmission error has misdirected this e-mail, please notify the author by return e-mail and delete this message and any attachment immediately. If you are not the intended recipient you must not use, disclose, distribute, forward, copy, print or rely on this e-mail in any way except as permitted by the author.

6 15

DisplayPort output with intel graphics driver?
by Toralf Lund 24 Nov '10

24 Nov '10

Hi. We've installed CentOS 5.5 on a "mini PC" with an onboard Intel graphics chip, which has both "VGA" and DisplayPort output. This works reasonably well, except that I'd like to connect the monitor to the DisplayPort, and I only seem to get a signal on the VGA connector. This is the case even if I boot with the DisplayPort (only) connected, in which case console output during boot goes to the DisplayPort, but the graphical output does not. On the other hand, . DisplayPort display did work when booting from a "live" Ubuntu CD. Is there anything I can do to get the correct display setup? Note that the driver used is "intel", not "i810". Thanks, - Toralf This e-mail, including any attachments and response string, may contain proprietary information which is confidential and may be legally privileged. It is for the intended recipient only. If you are not the intended recipient or transmission error has misdirected this e-mail, please notify the author by return e-mail and delete this message and any attachment immediately. If you are not the intended recipient you must not use, disclose, distribute, forward, copy, print or rely on this e-mail in any way except as permitted by the author.

1 0

nspluginwrapper rpms on x86_64? (was: firefox. java. 64 bit. bleah!)
by Mike Fedyk 24 Nov '10

24 Nov '10

On Sat, Nov 20, 2010 at 3:25 PM, Lars Hecking <lhecking(a)users.sourceforge.net> wrote: > Possibly. Or possibly not. On a closely related topic, can you comment on > whether or not it's a good idea to install the nspluginwrapper rpms on x86_64? > They seem to be fundamentally broken. > I don't think you need it anymore with FF 3.6.

4 3

10gig NIC - Link Delay
by Tom Brown 23 Nov '10

23 Nov '10

Hi I am having real trouble with a new batch of Intel NIC's - We were using another type of 10gig card and they were fine but got EOL'd from Intel and are now using something subtly different. I dont have all the details yet on the issue but basically there is a major delay in when the link comes up and this is causing major issues with PXE amongst other things. The log states this Nov 23 23:18:53 xxx kernel: ADDRCONF(NETDEV_UP): eth0: link is not ready Nov 23 23:19:09 xxx kernel: ixgbe: eth0 NIC Link is Up 10 Gbps, Flow Control: RX/TX Nov 23 23:19:09 xxx kernel: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready So 16 seconds for the link to come up - The only real difference between the old card and the new is that the new seems to support FCOE whereas the older one didnt Has anyone got any clues as to what causes link delays? thanks

3 3

Centos 6 installation memory requirements
by Robert Moskowitz 23 Nov '10

23 Nov '10

Will (does) Centos 6 require 512Mb of memory for the GUI install like FC14 or the lower requirement of FC13? My ASUS EE 700 has ~490Mb of memory (vidoe steals some from the 512Mb base) and FC14 switches to text install and does not install any GUI, leaving the boot in test mode. I recall a message earlier that 6 is based off of 14, but not the final Anaconda, thus my question. It would be NICE if the install can work with at least 384Mb of memory, as this is the recommended minimum for FC14 so I would think it is the miniumum for RHEL/Centos 6. I am seeing FC leave more older hardware behind and with its short cycles and 'currentness' of apps for RHEL 6, I am looking at moving some of my desktops back from FC to Centos. FC13 may be the last FC for some of them...

11 24

Strange happening with new users and keyed access on diskless cluster
by Joseph Norris 23 Nov '10

23 Nov '10

Hello to all, I have been battling this situation now for 3 days and still have not found a resolution. I appeal to any and all for help. Here are the facts as far as I can tell. 1) I moved a 66 node rocks based cluster to a diskless cluster using the latest version of Centos and all updates in place. 2) users are added with home directory mounted across the nodes on the cluster so a user's home directory would sit on /export/home with sym link from home on head node 3) sshkey-gen used to create public/private key in .ssh so that user can have keyless access to all nodes, allowing sge jobs to run across nodes. ( if I have left any information out above - please let me know ) So here is the problem: All of my current user base has had not issues what so ever with current arrangement and up to about a month ago I could create a user, use the the script that I have to build the keys and do an expect script out to each node answering yes to add access to known_hosts etc.... permissions correctly set on user .ssh directory and files. Now the problem: I build a new user - run my script and the users when ssh c33 ( name of a node ) gets a password challenge. I dink with the sshd_config for the nodes and not matter what I do I keep getting the password challenge or a permission error on publickey. I have done the ssh -vvv c33 and get "sending packet" but no return from openssh and then it defaults out to next method with no results. I have checked permissions with users that have no issue and as-far-as-I-can tell there is not issue. Now here is the real strange thing: I take a user that is already been on the system with no issues and delete the .ssh directory. Then I re-run my keybuilder bash script rebuilding the keys and setting the known_hosts and I get seamless ssh to all nodes. With the new users in the last month, do the same thing and I get the issues above. I am totally confused. Has something changed with an update? Do I need to do something different with the build of a new user that I did not have to do before? Do I have to do something in particular with my sshd_config file? Please give me any and all observations - I really need to resolve this issue. Thanks. -- Joseph Norris Applications Developer/Server Admin 209-228-4576

2 2

Eclipse Helios on CentOS 5.5 (was Websites Up!)
by Mathieu Baudier 23 Nov '10

23 Nov '10

> Then I hope to finish my tutorial on installing Eclipse > Helios for Centos 5.5 Is there anything special to be done? I just unzipped the SR1 distribution for RCP/RAP developers linux-gtk-x86_64 and it works without problem on an up to date CentOS 5.5 x86_64. (to be more precise: I install it as root under /opt, install some plugins like subclipse and regular users start it from there)

2 1

Re: [CentOS] Centos 6 installation memory requirements
by m.roth＠5-cent.us 23 Nov '10

23 Nov '10

Mathieu Baudier wrote: >> break out your wallet, blow the dust out, and spend a few bucks on some RAM > > Sometimes the hardware is so old, that it is not as easy as that to find the right RAM for it... > > I have some very old IBM PoS cashier machines (sic! got them for 30 EUR each, plenty of connectors, very well built) based on Celeron processors which valiantly run CentOS 5 for some tests/router/storage, etc., but I have a hard time finding RAM for them. > I think that they will never make it to CentOS 6 (maybe I'll switch them to Debian which I always found pretty good for low-end hardware). I've always been impressed with how solid IBM's hardware is. Anyway, one thing you might look at is to see what's running, and if you don't need it, turn it off, and maybe uninstall. If these are PoS boxen, do you need X windows? Do you need Gnome or KDE as windonw managers (look at smaller ones - I use IceWM at home, < 600k, yes, k, not M; the other admin here likes xfce)? mark

2 2

Websites Up!
by Keith Roberts 23 Nov '10

23 Nov '10

Just a quick note to say that I have moved all my websites to a cloud platform with 99.99% uptime. So I apologise if anyone has been trying to get to the Kickstart User Guide and other Centos bits on my website. My home server is being worked on, and I'll just use that for development purposes from now on. Then I hope to finish my tutorial on installing Eclipse Helios for Centos 5.5 Kind Regards, Keith Roberts www.karsites.net www.php-debuggers.net www.raised-from-the-dead.org.uk -- In theory, theory and practice are the same; in practice they are not. This email was sent from my laptop with Centos 5.5

1 0

Upgrade from RHEL 6 beta ?
by Nicolas Ross 23 Nov '10

23 Nov '10

I've installed rhel 6 beta to start playing around with clustering, gfs2 and ldap. Will I be able to upgrade to centos 6 final or I'll have to re-install ? Nicolas

3 6

Automount, External USB disk and e2fsck
by Robert Heller 23 Nov '10

23 Nov '10

Does Automount/autofs automagically run e2fsck? If so, how does one disable this? We have an external USB connected 2TB hard drive setup to automount. Sometimes e2fsck gets fired up, I think from Automount. I have this line in the automount config: /backupdisk -fstype=ext3,nocheck :LABEL=BACKUP I believe this should prevent Automount from running e2fsck, but it still runs it. (We have a cron job that daily does a e2fsck -p on this disk at a 'quiet' time.) -- Robert Heller -- 978-544-6933 / heller(a)deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments

1 0

200 line kernel patch to improve performance
by Jerry Geis 23 Nov '10

23 Nov '10

There was an article about a kernel patch to improve performance. www.webupd8.org/2010/11/alternative-to-200-lines-kernel-patch.html it involves adding this to ~/.bashrc | if [ "$PS1" ] ; then mkdir -m 0700 /sys/fs/cgroup/cpu/user/$$ echo $$ > /sys/fs/cgroup/cpu/user/$$/tasks fi and this as root: ||mount -t cgroup cgroup /sys/fs/cgroup/cpu -o cpu mkdir -m 0777 /sys/fs/cgroup/cpu/user| My machine Centos 5.5 does not have a /sys/fs/cgroup Is there anything else to do instead? Jerry

2 1

redirecting time output
by Rainer Traut 23 Nov '10

23 Nov '10

Hi, am trying to pipe output from time command and output from a shell script to the mail program. So far it's not working as expected... # time echo "test" 2>&1 | mail -s "timetest" my(a)mail.com real 0m0.126s user 0m0.000s sys 0m0.000s The time command writes to stderror, but here the redirection seems to apply to the echo command? Thx Rainer

3 3

Fail Transfer of Large Files
by Michael D. Berger 23 Nov '10

23 Nov '10

On my intranet, I sometimes transfer large files, about 4G, to an CentOS old box that I use for a web server. I transfer with ftp or sftp. Usually, before the file is complete, the transfer "stalls". At that point, ping from the destination box to the router fails. I then deactivate the net interface on the destination box and then activate it. Ping is then successful, and the transfer is completed. The transferred file is correct, as verified with sha1sum. All connections are via cat6 wire. So what do you think? Should I try changing the net card? Any tests to run? Any other suggestions? Thanks for your help. Mike.

7 13

Sendmail, localloop, and iptables -- should I be more paranoid?
by Robert Moskowitz 23 Nov '10

23 Nov '10

By default, sendmail only listens on the localloop: DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl But by default to allow sendmail to even work the iptables entry is: -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT Without this, sendmail can't even connect to localloop. But should I handedit this line to something like: -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp -d 127.0.0.1 --dport 25 -j ACCEPT And once you handedit iptables, you can't use the gnome firewall applet, I suspect...

3 5

upcoming mailman version change?
by Dave Stevens 23 Nov '10

23 Nov '10

Hi, I'm using CentOS on a box that, among other things, offers mailman mailing lists, currently mailman 2.1.9. Version 2.1.14 is avilable from the developers but integrating it into the system promises to be tedious. I looked at RHEL 6 and don't know where to look to find the version there, which I assume will be the version in CentOS 6. Can anyone either confirm what version will be in C6 or where to find the full feature list in RHEL 6? Dave -- "It is no measure of health to be well adjusted to a profoundly sick society." Krishnamurti

2 2

where to download tzdata-java-20101-1.e15 RPM fro CENTOS 5.5 X86?
by mcclnx mcc 22 Nov '10

22 Nov '10

I am installed CENTOS 5.5 on X86. After finish, I tried to apply latest patches. Rpm patch manager say need "dependency" "tzdata-java-20101-1.e15". I search CENTOS 5.5 CD and can NOT find this file. I also search Internet and no result. Can anyone tell me where to download "tzdata-java-20101-1.e15" RPM? Thanks.

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firefox. java. 64 bit. bleah!
by m.roth＠5-cent.us 22 Nov '10

22 Nov '10

Found this <http://plugindoc.mozdev.org/linux-amd64.html#java-sun>, and I remember the plugins directory... except firefox 3.6.11, I can't find any, not in ~/.mozilla, not in /usr/lib64/mozilla. Anyone have a clue for the poor? mark

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Re: [CentOS] Router for SOHO network - hardware considerations
by Bob Puff＠NLE 22 Nov '10

22 Nov '10

I am looking for something similar to this thread.. Is there a way to make a small CentOS distro that is bootable and runnable from only a USB memory stick? It would need to be able to have files modified, but I wouldn't want the USB stick to die prematurely due to a ton of writes... Bob

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Strange ntp behaviour?
by Robert Moskowitz 22 Nov '10

22 Nov '10

The following is from my logwatch email: --------------------- XNTPD Begin ------------------------ XNTPD Killed: 7 Time(s) XNTPD Started: 8 Time(s) Total interfaces 8 (non-local: 4) Total synchronizations 6 (hosts: 1) Errors getaddrinfo: "0.centos.pool.ntp.org" invalid host address, ignored: 2 time(s) getaddrinfo: "1.centos.pool.ntp.org" invalid host address, ignored: 2 time(s) getaddrinfo: "2.centos.pool.ntp.org" invalid host address, ignored: 2 time(s) ---------------------- XNTPD End ------------------------- Yet from this host I get: # host 0.centos.pool.ntp.org 0.centos.pool.ntp.org has address 208.53.158.34 0.centos.pool.ntp.org has address 69.50.219.51 0.centos.pool.ntp.org has address 108.76.168.145 So what is NTP doing here; why the errors for getaddrinfo? Or is this nothing more than 2 out of some many times getaddrinfo failed, but worked just fine enough to count?

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TC Filter Flows & ESFQ - Traffic Shaping
by Frederick Abrams 22 Nov '10

22 Nov '10

Hi, We currently have ESFQ running on an old Fedora machine and i'm trying to build a new router with something similar using CentOS 5.5 The problem is that it seems by default the CentOS is not compiled with TC ESFQ or TC filter hash flows I get the following error: Unknown filter "flow", hence option "hash" is unparsable How can i add support for the hash flow option or ESFQ or perhaps someone can suggest a better option where I can get the same functionality of even sharing based on src / dst tc filter add dev eth0 parent 10: protocol ip handle 10 flow hash keys dst divisor 1024 -- Fred -- This message has been scanned for viruses and dangerous content by Intelvision MailScanner, and is believed to be clean.

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