Discuss January 2012

discuss@lists.centos.org

222 participants
221 discussions

CentOS6 KDE: Desktop Activity type: desktop only
by wwp 23 Jan '12

23 Jan '12

Hello there, I'm looking at different desktop activity types (in Desktop Settings), and on my CentOS 6, I only have "desktop". No folderview, for instance. Does anybody know how to install/enable other types? Regards, -- wwp

2 2

weird XFS problem
by Boris Epstein 23 Jan '12

23 Jan '12

Hello all, I have a CentOS 5.7 machine hosting a 16 TB XFS partition used to house backups. The backups are run via rsync/rsnapshot and are large in terms of the number of files: over 10 million each. Now the machine is not particularly powerful: it is 64-bit machine, dual core CPU, 3 GB RAM. So perhaps this is a factor in why I am having the following problem: once in awhile that XFS partition starts generating multiple I/O errors, files that had content become 0 byte, directories disappear, etc. Every time a reboot fixes that, however. So far I've looked at logs but could not find a cause of precipitating event. Hence the question: has anyone experienced anything along those lines? What could be the cause of this? Thanks. Boris.

5 18

Problem with spamassassin under CentOS-5.7
by Timothy Murphy 23 Jan '12

23 Jan '12

I'm getting the following warning in my logwatch, or if I restart the spamassassin service. I've tried yum-reinstalling the packages involved but that didn't help. ------------------------------- /etc/cron.daily/sa-learn: Subroutine IO::Socket::INET6::AF_INET6 redefined at /usr/lib/perl5/5.8.8/Exporter.pm line 65. at /usr/lib/perl5/vendor_perl/5.8.8/IO/Socket/INET6.pm line 16 Subroutine Net::DNS::Resolver::Base::AF_INET6 redefined at /usr/lib/perl5/5.8.8/Exporter.pm line 65. at /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread- multi/Net/DNS/Resolver/Base.pm line 66 Learned tokens from 1 message(s) (1 message(s) examined) ------------------------------- I wonder if anyone else is getting this? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College Dublin

2 2

squid transparent proxy problem
by Hüvely Balázs 23 Jan '12

23 Jan '12

Greetings, I installed a squid 3.1.10.i686 squid to a centos 6.2i686. The proxy is working fine with the default config. After I decided to use it as a transparent proxy, I added two lines to config: http_proxy 10.0.5.1:3128 transparent, always_direct allow all http_port 10.0.5.1:3128 transparent # # Recommended minimum configuration: # acl manager proto cache_object #acl localhost src 127.0.0.1/32 ::1 acl localhost src 127.0.0.1/32 #acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 # Example rule allowing access from your local networks. # Adapt to list your (internal) IP networks from where browsing # should be allowed acl localnet src 10.0.0.0/8 # RFC1918 possible internal network #acl localnet src 172.16.0.0/12 # RFC1918 possible internal network #acl localnet src 192.168.0.0/16 # RFC1918 possible internal network #acl localnet src fc00::/7 # RFC 4193 local private network range #acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT # # Recommended minimum Access Permission configuration: # # Only allow cachemgr access from localhost http_access allow manager localhost http_access deny manager # Deny requests to certain unsafe ports http_access deny !Safe_ports # Deny CONNECT to other than secure SSL ports http_access deny CONNECT !SSL_ports # We strongly recommend the following be uncommented to protect innocent # web applications running on the proxy server who think the only # one who can access services on "localhost" is a local user #http_access deny to_localhost # # INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS # # Example rule allowing access from your local networks. # Adapt localnet in the ACL section to list your (internal) IP networks # from where browsing should be allowed http_access allow localnet http_access allow localhost # And finally deny all other access to this proxy http_access deny all # Squid normally listens to port 3128 http_port 3128 # We recommend you to use at least the following line. hierarchy_stoplist cgi-bin ? # Uncomment and adjust the following to add a disk cache directory. #cache_dir ufs /var/spool/squid 100 16 256 # Leave coredumps in the first cache dir coredump_dir /var/spool/squid # Add any of your own refresh_pattern entries above these. refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . 0 20% 4320 always_direct allow all There are 2 iptables rule too: -A PREROUTING -i lo -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128 -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128 eth0 is the local NIC, eth1 is for internet. ipv4_forward is enabled. [root@atom squid]# iptables -S -t nat -P PREROUTING ACCEPT -P POSTROUTING ACCEPT -P OUTPUT ACCEPT -A PREROUTING -i lo -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128 -A PREROUTING -i eth0 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128 -A POSTROUTING -o eth1 -j MASQUERADE [root@atom squid]# iptables -S -P INPUT DROP -P FORWARD ACCEPT -P OUTPUT ACCEPT -A INPUT -i eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p udp -m udp --dport 53 -j ACCEPT -A INPUT -p tcp -m tcp --dport 53 -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -i tun+ -j ACCEPT -A INPUT -i eth0 -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -j DROP -A FORWARD -j ACCEPT -A OUTPUT -j ACCEPT The cache.log tells me about strange errors: 2012/01/22 00:23:51| Starting Squid Cache version 3.1.4 for i386-koji-linux-gnu... 2012/01/22 00:23:51| Process ID 4981 2012/01/22 00:23:51| With 1024 file descriptors available 2012/01/22 00:23:51| Initializing IP Cache... 2012/01/22 00:23:51| DNS Socket created at [::], FD 7 2012/01/22 00:23:51| Adding nameserver 192.168.4.254 from /etc/resolv.conf 2012/01/22 00:23:51| Adding nameserver 192.168.5.254 from /etc/resolv.conf 2012/01/22 00:23:51| User-Agent logging is disabled. 2012/01/22 00:23:51| Referer logging is disabled. 2012/01/22 00:23:51| Unlinkd pipe opened on FD 12 2012/01/22 00:23:51| Local cache digest enabled; rebuild/rewrite every 3600/3600 sec 2012/01/22 00:23:51| Store logging disabled 2012/01/22 00:23:51| Swap maxSize 0 + 262144 KB, estimated 20164 objects 2012/01/22 00:23:51| Target number of buckets: 1008 2012/01/22 00:23:51| Using 8192 Store buckets 2012/01/22 00:23:51| Max Mem size: 262144 KB 2012/01/22 00:23:51| Max Swap size: 0 KB 2012/01/22 00:23:51| Using Least Load store dir selection 2012/01/22 00:23:51| Set Current Directory to /var/spool/squid 2012/01/22 00:23:51| Loaded Icons. 2012/01/22 00:23:51| Accepting HTTP connections at [::]:3128, FD 13. 2012/01/22 00:23:51| HTCP Disabled. 2012/01/22 00:23:51| Squid modules loaded: 0 2012/01/22 00:23:51| Adaptation support is off. 2012/01/22 00:23:51| Ready to serve requests. 2012/01/22 00:23:52| storeLateRelease: released 0 objects 2012/01/22 00:23:56| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:01| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:02| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:06| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:08| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:13| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:16| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:23| idnsGrokReply: Malformed DNS response I tried to get another verision of squid, but 3.1.4, and 3.1.10 makes the same error. On a fedora 16 x86_64, with the same config as above, there is no error, and works perfectly, with the same iptables rule. Any idea, how can I fix it, or what I may configured wrong? Thanks Balazs

2 1

Centso 6.2 bug ?
by Riccardo Veraldi 22 Jan '12

22 Jan '12

Hello, is anyone experiencing this ? I have a sympa process (bulk.pl) which triggers this bug: ------------[ cut here ]------------ WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Not tainted) Hardware name: X8DTU-LN4+ Modules linked in: cpufreq_ondemand acpi_cpufreq freq_table mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 microcode serio_raw i2c_i801 i2c_core iTCO_wdt iTCO_vendor_support igb ioatdma dca i7core_edac edac_core sg ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif usb_storage pata_acpi ata_generic ata_piix sata_mv dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan] Pid: 2241, comm: bulk.pl Not tainted 2.6.32-220.2.1.el6.x86_64 #1 Call Trace: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 [<ffffffff814eccc5>] ? thread_return+0x232/0x79d [<ffffffff810958e3>] ? __hrtimer_start_range_ns+0x1a3/0x460 [<ffffffff814ee5db>] ? do_nanosleep+0x8b/0xc0 [<ffffffff81095da4>] ? hrtimer_nanosleep+0xc4/0x180 [<ffffffff81094b70>] ? hrtimer_wakeup+0x0/0x30 [<ffffffff81095bd4>] ? hrtimer_start_range_ns+0x14/0x20 [<ffffffff81095ed4>] ? sys_nanosleep+0x74/0x80 [<ffffffff8100b0f2>] ? system_call_fastpath+ thank you Rick

3 2

doing a new install on top of existing software raid-1
by fred smith 22 Jan '12

22 Jan '12

Hi all! One of these days I'm going to upgrade my centos 5.7 box (which is currently configured with raid-1 on two drives) to 6.x. i've been given to believe that I should be able to do a fresh install on top of the existing raid setup, i.e., without having to re-create the raid array, but just use the existing setup. and somewhere in the last few days (in this list I think) someone posted that Anaconda should detect the existing raid array and allow you to re- use it for a new install. so just as an experiment, I booted up the 6.2 DVD (not live) and took it as far as where it sets up the partitioning. So, was I unduly surprised when it DID NOT detect the existing raid? well, a little. more in the category of NOT ENTIRELY PLEASED, actually. I'd appreciate it if someone who knows something about linux hardware raid, and its intersection with Anaconda, could drop a few clues in my direction. thanks in advance! -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- "And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. Of the increase of his government there will be no end. He will reign on David's throne and over his kingdom, establishing and upholding it with justice and righteousness from that time on and forever." ------------------------------- Isaiah 9:7 (niv) ------------------------------

4 10

secpwgen
by Helmut Drodofsky 21 Jan '12

21 Jan '12

Hi, secpwgen is always reporting "mlock: Cannot allocate memory" even with user root. CentOS 6.2. Problem with selinux? Thank you for help in advance. Best regards Helmut Drodofsky

2 2

OT: anyone out there with Oracle ZFS appliance?
by Alan McKay 20 Jan '12

20 Jan '12

I'll ask more specific questions if so :-) Need to pull some usage data via a script and Oracle suppport says it can't be done. I have trouble believing that. -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

1 0

Re: [CentOS] Connecting ethX devices directly to a KVM/QEMU guest OS (SOLVED)
by Chuck Munro 20 Jan '12

20 Jan '12

On 01/20/2012 09:00 AM, Tait Clarridge wrote: >> > But a new problem arises ... one of the m0n0wall instances needs to use >> > DHCP to get a dynamic IP from my ISP (the others are static, so they're >> > ok). How do I get the bridge to proxy the DHCP request and forward the >> > response to the VM guest? I brought up a test instance of m0n0wall but >> > when it asks for an IP on its WAN side, the result is 0.0.0.0/8 so it >> > would appear the request never makes it to the ISP. >> > >> > As a sanity check, I configured the WAN-side bridge to use DHCP and that >> > worked, but it's the m0n0wall VM guest that needs to make the request, >> > not the CentOS host. >> > >> > Suggestions anyone? In the mean time, I'll keep looking for a solution. >> > >> > Thanks, >> > Chuck > Hmmm. Is the bridge up and you can see the interface attached to it from > running "brctl show" and "ifconfig"? Could you attach that output? > > If yes, then I would do a packet capture on the CentOS host on the eth > interface attached to the bridge to see if the request makes it out. > > I'm running XEN at home and I have a very similar setup where I pass a > VLAN from my switch that a provider modem is connected to into a bridge > and it gets DHCP no problem (as long as the bridge and dot1q > subinterfaces show up in ifconfig). > > The bridge should automatically send all the traffic out regardless of > protocol, I doubt ebtables would be actively blocking anything as well > and same goes for the ISP locking down with MAC addresses. I'm embarrassed to say the problem was solved in the most simplistic possible way ... reboot the cable modem. I notice that when the host boots up, all NIC ports are placed in promiscuous mode, which means that DHCP broadcasts should be free to travel across the bridge, so it had to be something about a mismatch in the cable modem's arp cache. Thanks for your suggestions. It's full steam ahead now, and I'm pleased to say the performance of the four m0n0wall VM instances has been very good. Chuck

1 0

Wrong PV UUID
by Muhammad Panji 20 Jan '12

20 Jan '12

Dear All, I have one VG with one LV inside consist of four disk (and four PV) somehow the UUID is changed. I try to restore with the last known good configuration and use pvcreate --uuid xxx --restorefile xxx but I think when I first time do it I did use wrong UUID for two device. but haven't only using command above and haven't used vgcfgrestore. After carefully read the configuration, using hdparm to know device serial number I think I have assign the right UUID for each device. I succesfully use vgcfgrestore, but I cannot mount the device (unknown filesystem, bad superblock, etc). My questions are, is my first attempt to assigning (wrong) UUID make all the LVM corrupt? I see that all LE and PE is still there, the VG and LV size is right but still I cannot mount the volume. Is this just a bad filesystem or the data really gone? Thank you. Regards, -- ----- Muhammad Panji http://www.panji.web.id http://www.kurungsiku.com http://sumodirjo.wordpress.com http://www.kurungsiku.web.id http://www.linuxbox.web.id

2 1

← Newer
1
...
5
6
7
8
9
10
11
...
23
Older →

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss January 2012