Discuss March 2012

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217 participants
200 discussions

nfslock
by m.roth＠5-cent.us 31 Mar '12

31 Mar '12

I just updated one of our servers to 5.8, and rebooted. In the logs, I saw a bunch of Mar 21 16:29:02 <server> rpc.statd[9783]: recv_rply: can't decode RPC message! Mar 21 16:29:33 <server> last message repeated 442 times Mar 21 16:30:34 <server> last message repeated 835 times Mar 21 16:31:36 <server> last message repeated 884 times Mar 21 16:32:38 <server> last message repeated 856 times Mar 21 16:32:44 <server> last message repeated 111 times I tried restarting nfslock, and that *appears* to have fixed it. Googling, I found a thread about that at <http://nerdbynature.de/s9y/archives/2009/08.html>, which suggests that it's starting too early, possibly before portmap is running. Anyone else see this? Has an old bug snuck back in? mark

10 18

About Postfix mail server using dovecot and courier imap configuration
by jiten jha 31 Mar '12

31 Mar '12

Dear Friends, I am new in server side so i want to configure new Postfix mail server using dovecot or courier imap configuration . But I want courier for configure server . I do not want any database for store mails and users information. It just like create users then all mail goes to users home folder. Like useradd /home/jiten/ then all mail store in my jiten folders. Please help me it is urgent for me. -- Regards Jitendra Jha

3 3

Problem with PHP / Postgresql on CentOS6.2
by Rudinei Dias 31 Mar '12

31 Mar '12

HI. I have instaled a WEB server with Postgresql on CentOS 6.2. PostgreSQL, versin 9.1.3 x64 from EntrrpriseDB base *.run*. PHP with PDO from YUM using reposity versions. On start apache does not get error. PHP LOG under, with PDO error. *PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_pgsql.so' - libpq.so.5: failed to map segment from shared object: Permission denied in Unknown on line 0 *PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_pgsql.so' - libpq.so.5: failed to map segment from shared object: Permission denied in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/xsl.so' - libxslt.so.1: failed to map segment from shared object: Permission denied in Unknown on line 0 [Tue Mar 27 09:35:17 2012] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips configured -- resuming normal operations I try to reinstall all PHP modules and get this messages Installing : php-xml-5.3.3-3.el6_2.6.x86_64 14/24 Installing : php-intl-5.3.3-3.el6_2.6.x86_64 15/24 Installing : php-embedded-5.3.3-3.el6_2.6.x86_64 16/24 */sbin/ldconfig: /opt/PostgreSQL/psqlODBC/lib/libpq.so.5 is not a symbolic link* Installing : php-soap-5.3.3-3.el6_2.6.x86_64 17/24 Installing : php-mbstring-5.3.3-3.el6_2.6.x86_64 18/24 Installing : php-snmp-5.3.3-3.el6_2.6.x86_64 19/24 PostgreSQL an APACHE runs normal and PHP does not recognize php_pgsql/pdo_pgsql. How i fix this mess? Thanks. -------------------------------------- Rudinei Dias

7 10

Linux on touch screen device
by Nataraj 30 Mar '12

30 Mar '12

I have poked around in google and have seen a number of youtube videos, but my question is whether anyone really has linux running on any kind of tablet or tablet PC device in such a way that the touch screen can be used productively and it won't take a month to get it running? Initially the two applications that are of most interest to me would be a good web browser (maybe chromium) and thunderbird. I would also like to have a decent on screen keyboard which could be used to ssh to servers in an emergency. I've seen instructions for booting linux on various devices, but many people doing this are using keyboards and not touchscreens. Do applications like thunderbird have to be modified in order to work well with a touch screen or is just getting a working driver for the touchpad sufficient? If anyone has any experience with this I would appreciate knowing what hardware your running on and what linux distro/desktop environment you use. I've been interested in devices like the ASUS EP121 which is a dual core I5, so it wouldn't be necessary to have an ARM distribution. Also the newest Asus transformer prime (arm) which I think is about 2 months away sounds interesting. Nataraj

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my spammer list
by Bob Hoffman 30 Mar '12

30 Mar '12

Hello, Thanks to some nice people on here and other forums I have pretty much finalized my whole mail system on centos 6.x. With all the checks, greylisting, dev/null of any 8+ spam level SA, I still get a few mails. It seems like everytime I enable a new protectant, the mail stops spamming for a few hours...then the spammers decide I am worthy of using better methods against me..and more come. LOL. I am down to just 10-15 a day. Anything that gets through all that I set up now goes to a spammers list that I add to the access file of postfix. http://bobhoffman.com/spammers.html that is the link to my list. I am trying to sort them out into political, real estate, bulk spammers, etc. The worst part is the bulk emailers are not on any black list. It is very hard to find their mail MX until they actually send you one. Many will be blocked, then a new alternate of theirs comes through. I could not find a list of bulk commercial spammers so I thought I would start one. As I progress it will become more defined, but right now a big list with some categories after it. Hope it helps.

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IPv6 routing failure on CentOS5
by Steve Snyder 30 Mar '12

30 Mar '12

I can't get IPv6 routing to configure correctly despite everything I've read saying it should This is my network config on a fully-updated CentOS 5.8 system: # cat /etc/sysconfig/network NETWORKING=yes NETWORKING_IPV6=yes HOSTNAME=my.hostname.com GATEWAY=aaa.bbb.ccc.ddd IPV6_DEFAULTGW=2a02:aaaa.bbbb::1 IPV6_DEFAULTDEV=eth0 # cat /etc/sysconfig/network-scripts/ifcfg-eth0 ONBOOT=yes DEVICE=eth0 BOOTPROTO=static HWADDR=52:54:00:68:42:1E IPADDR=000.111.222.333 NETMASK=255.255.255.128 IPV6INIT=yes IPV6ADDR=2a02:aaaa.bbbb:178:209:50:230:0/112 Attempts to use the IPv6 address fail. For example: # ping6 -c 2 2a00:1450:4016:800::1013 connect: Network is unreachable However it works if I manually enter these 2 lines: # route -A inet6 add ::/0 dev eth0 # ip -6 route add 2000::/3 via 2a02:aaaa.bbbb::1 metric 1 # ping6 -c 2 2a00:1450:4016:800::1013 PING 2a00:1450:4016:800::1013(2a00:1450:4016:800::1013) 56 data bytes 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=0 ttl=57 time=91.2 ms 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=1 ttl=57 time=95.3 ms These are the routing table entries added by my hand-added configuration: 2000::/3 via 2a02:418:6a04::1 dev eth0 metric 1 expires 21333054sec mtu 1500 advmss 1440 hoplimit 4294967295 default dev eth0 metric 1 expires 21333054sec mtu 1500 advmss 1440 hoplimit 4294967295 So... given the parameters set in my config files, why are the CentOS v5.8 initscripts not configuring my IPv6 routing correctly? One more thing. I get this output on network start up (prior to hand-configuration): Bringing up interface eth0: WARN : [ipv6_add_route] 'No route to host' adding route '::/0' via gateway '2a02:aaaa.bbbb::1' through device 'eth0' Thanks.

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CentOS-announce Digest, Vol 85, Issue 15
by centos-announce-request＠centos.org 30 Mar '12

30 Mar '12

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. CEEA-2012:0435 CentOS 6 gdm Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Thu, 29 Mar 2012 18:24:34 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEEA-2012:0435 CentOS 6 gdm Update To: centos-announce(a)centos.org Message-ID: <20120329182434.GA24293(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2012:0435 Upstream details at : https://rhn.redhat.com/errata/RHEA-2012-0435.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 86a8697001bce08153785f2f35e597adad90ffc131d5ff42f733112292412f5c gdm-2.30.4-33.el6_2.i686.rpm a88b0a58182334360e5812072547dd70e67bc35bdfd05a0c82aed964cf368be1 gdm-libs-2.30.4-33.el6_2.i686.rpm 427ee92d1fc1a9d5eabf2103b547b101b1b0f56365df6467ed64a07ce98659da gdm-plugin-fingerprint-2.30.4-33.el6_2.i686.rpm 55d9c767a483c9c40878804bbfa0f351bd9f95bd7b1c4f9d6fff7c8cd0eb92e1 gdm-plugin-smartcard-2.30.4-33.el6_2.i686.rpm 87030a80cbc1a333782a7cf197b0d48d0403320e5278dcd2a08839a87eb00dcd gdm-user-switch-applet-2.30.4-33.el6_2.i686.rpm x86_64: c2acd45532a6d500c59de483772e1808985b0ddea090cdfd44dbe1cf6f3f651e gdm-2.30.4-33.el6_2.x86_64.rpm a88b0a58182334360e5812072547dd70e67bc35bdfd05a0c82aed964cf368be1 gdm-libs-2.30.4-33.el6_2.i686.rpm 403d9d7a7757a847a2d068eea21baa8a2c8e84dcb8dc2a88771d214011a9b70e gdm-libs-2.30.4-33.el6_2.x86_64.rpm ac8fb81e1c351e9a72caf268966996f3923e73b845899979bdffa1170ec0ae68 gdm-plugin-fingerprint-2.30.4-33.el6_2.x86_64.rpm 2516b124ed4e79d2fc1abb5da24685bfd28916491cb19ed7210d92d8a4517cf4 gdm-plugin-smartcard-2.30.4-33.el6_2.x86_64.rpm 2c13e7596ec8d187f4a14a051574bbe945ee6ee1e5ec946e3674071b09e4c669 gdm-user-switch-applet-2.30.4-33.el6_2.x86_64.rpm Source: 4365957ce99e24c8201e29c3d417db33b2ea03729ac77f90decc1a7096d2aa99 gdm-2.30.4-33.el6_2.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #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 85, Issue 15 ***********************************************

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RAID-10 vs Nested (RAID-0 on 2x RAID-1s)
by Tim Nelson 30 Mar '12

30 Mar '12

Greetings- I'm about to embark on a new installation of Centos 6 x64 on 4x SATA HDDs. The plan is to use RAID-10 as a nice combo between data security (RAID1) and speed (RAID0). However, I'm finding either a lack of raw information on the topic, or I'm having a mental issue preventing the osmosis of the implementation into my brain. Option #1: My understanding of RAID10 using 4 drives (now known as a,b,c,d) is: a+b - RAID1 (md0) c+d - RAID1 (md1) md0+md1 - RAID0 (md3) This is of course simplified as /boot needs to be on RAID1 (last I checked Grub couldn't boot from anything other than RAID1). Option #2: I've also found the kernel provides a direct method of RAID10 without the manual assignment of the arrays as noted above. I performed a test installation, selecting RAID10 as the type in the installer, and it "works" but I'm just not seeing the distinction between what disks/partitions are actually the mirror or stripe portion of the array. Details: [root@c6r10tester ~]# mdadm --detail /dev/md1 /dev/md1: Version : 1.1 Creation Time : Thu Mar 29 16:14:17 2012 Raid Level : raid10 Array Size : 36695040 (35.00 GiB 37.58 GB) Used Dev Size : 18347520 (17.50 GiB 18.79 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Intent Bitmap : Internal Update Time : Thu Mar 29 16:28:49 2012 State : active Active Devices : 4 Working Devices : 4 Failed Devices : 0 Spare Devices : 0 Layout : near=2 Chunk Size : 512K Name : c6r10tester:1 (local to host c6r10tester) UUID : be38645d:4d3c8b77:0f6df687:08016c6a Events : 51 Number Major Minor RaidDevice State 0 8 3 0 active sync /dev/sda3 1 8 19 1 active sync /dev/sdb3 2 8 35 2 active sync /dev/sdc3 3 8 51 3 active sync /dev/sdd3 Am I overthinking this? Does the kernel handle the mirror/stripe configuration under the hood, simply presenting me with a magical RAID10 array? Or, is this something different and I really should be performing the RAID creation manually as noted in option #1? Help me CentOS-Kenobi, you're my only hope. --Tim

4 4

Dual Monitor setup on CentOS 6?
by Toralf Lund 30 Mar '12

30 Mar '12

Hi. Is anyone here running CentOS 6 with dual monitors configured as a single X Screen? I'm trying such a setup on version 5 (again), using NVIDIA TwinView, and it works in many ways, but there are a number of problems that means it's not too usable - the most important one being that there appears to be no way to control which of the displays new applications/windows will appear on. I mean, I don't necessarily need to be able to configure this or anything, but I would at least expect programs to open on the monitor that displaying the menu item or icon or terminal or whatever used for startup, but often they end up on the other one. So I guess my question is, would upgrading to version 6 help? - 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.

3 3

udev works ok in CentOS 6.x??
by C. L. Martinez 30 Mar '12

30 Mar '12

Hi all, I have strange problem with my persistent names applied to iscsi disks. I have configured an udev rule to assign static iscsi disk names: KERNEL=="sd[a-z]", SUBSYSTEM=="block", PROGRAM="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="1iTGTDSK9a2c73ce654d0ca6", NAME="iscsi/sda" KERNEL=="sd[a-z][0-9]*", SUBSYSTEM=="block", PROGRAM="/sbin/scsi_id --whitelisted --replace-whitespace --device=/dev/$name", RESULT=="1iTGTDSK9a2c73ce654d0ca6", NAME="iscsi/sda%n" When udev starts, it seems it works: [root@cossrv01 rules.d]# ls -la /dev/iscsi/sda brw-rw---- 1 root disk 8, 16 Mar 12 11:42 /dev/iscsi/sda After this, I try to create a lvm volume: [root@cossrv01 rules.d]# pvcreate /dev/iscsi/sda ... and works. But: [root@cossrv01 rules.d]# pvdisplay --- Physical volume --- PV Name /dev/sdb VG Name cmdata PV Size 64.00 GiB / not usable 4.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 16382 Free PE 12542 Allocated PE 3840 PV UUID rSuu5T-VtRl-ffDd-5Vtm-CBhS-UffO-sFgCRX Why? Why pvdisplay doesn't shows /dev/iscsi/sda instead of /dev/sdb?? It is a big problem when multiple iscsi disks are assigned in aleatory form ... and with CentOS 5.x this procedure works out of the box ... (with RHEL6.x doesn't works neither, but it works with RHEL5.x). Thanks.

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Discuss March 2012