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Yum update changes inode of file
by Meikel 22 Aug '14

22 Aug '14

Hi folks, on CentOS 6.5 I run tripwire software which verifies data integrity. My system is automatically updated by yum (as far as I understand the /etc/cron.daily/0yum.cron is responsible for the regular system updates). After a system update I'm then notified by tripwire about the changes on the file system. By browsing those tripwire reports I found that there are files which did not change at all (i.e. the MD5 hash is the same as before) but the inode changed. I do not understand what yum did to the file that resulted in an inode change, especially I'm wondering how the inode can change although there was no modification on the file at all. Thanks in advance for any clarification. Find below an excerpt from the tripwire log (for /etc/nsswitch.conf) which shows that only inode changed. Regards, Meikel Excerpt from tripwire report: Modified object name: /etc/nsswitch.conf Property: Expected Observed ------------- ----------- ----------- Object Type Regular File Regular File Device Number 64770 64770 * Inode Number 393292 393686 Mode -rw-r--r-- -rw-r--r-- Num Links 1 1 UID root (0) root (0) GID root (0) root (0) Size 1688 1688 Modify Time Tue 04 May 2010 09:22:21 PM CEST Tue 04 May 2010 09:22:21 PM CEST Blocks 8 8 CRC32 DjDI7W DjDI7W MD5 ANYAnN/RJkbSUehjA7wMSM ANYAnN/RJkbSUehjA7wMSM

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Missing system-config-lvm?
by Sergio Belkin 22 Aug '14

22 Aug '14

Hi, I didn't find system-config-lvm package on centos 7 official repo's, why? :) Greetings -- -- Sergio Belkin http://www.sergiobelkin.com LPIC-2 Certified - http://www.lpi.org

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HP ProLiant DL380 G5
by Matt 22 Aug '14

22 Aug '14

I have CentOS 6.x installed on a "HP ProLiant DL380 G5" server. It has eight 750GB drives in a hardware RAID6 array. Its acting as a host for a number of OpenVZ containers. Seems like every time I reboot this server which is not very often it sits for hours running a disk check or something on boot. The server is located 200+ miles away so its not very convenient to look at. Is there anyway to tell if it plans to run this or tell it not too? Right now its reporting one of the drives in array is bad and last time it did this a reboot resolved it.

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Re: [CentOS] Missing system-config-lvm?
by Sergio Belkin 22 Aug '14

22 Aug '14

I don't rely on such a tool to manage lvms.... but I'm making a doc about LVM's and it was interesting to have a graphical approach... 2014-08-22 14:55 GMT-03:00 Reindl Harald <h.reindl(a)thelounge.net>: > > > Am 22.08.2014 um 19:10 schrieb Sergio Belkin: > > I didn't find system-config-lvm package on centos 7 official repo's, why? > > :) > > because it is dropped long ago upstream for good reasons > https://ask.fedoraproject.org/en/question/38068/lvm-on-fedora20/ > > recent LVM implementations support a ton of features unknown > to "system-config-lvm" - would really like to risk act a > unmaintained tool on a recent setup probably using thin-provision? > > > -- -- Sergio Belkin http://www.sergiobelkin.com LPIC-2 Certified - http://www.lpi.org

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java 1.6 and 1.7 on CentOS
by Asma rabe 22 Aug '14

22 Aug '14

Hi , I have java 1.7 installed on CentOS machine. when i tried to run java program i got an error and found that i should run it using java 1.6. Is the best solution to install Java 1.6 and have both java 1.6 and java 1.7 at same time? or is there a better solution. If i should install both java 1.6 and 1.7 , how to do that ? Thank you very much. Best Regards, Asma

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Centos 7 lockup
by Les Mikesell 21 Aug '14

21 Aug '14

A machine I set up to run OpenNMS stopped working last night - no hardware alarm lights, but keyboard/monitor/network unresponsive. After a reboot I see a large stack of messages like this in /var/log/messages: ---- Aug 20 14:02:34 opennms-h-03 python: SELinux is preventing /usr/sbin/monitor-get-edid-using-vbe from mmap _zero access on the memprotect . ***** Plugin mmap_zero (53.1 confidence) suggests ************************* If you do not think /usr/sbin/monitor-get-edid-using-vbe should need to mmap low memory in the kernel. Then you may be under attack by a hacker, this is a very dangerous access. Do contact your security administrator and report this issue. ***** Plugin catchall_boolean (42.6 confidence) suggests ****************** If you want to allow mmap to low allowed Then you must tell SELinux about this by enabling the 'mmap_low_allowed' boolean. You can read 'None' man page for more details. Do setsebool -P mmap_low_allowed 1 ***** Plugin catchall (5.76 confidence) suggests ************************** If you believe that monitor-get-edid-using-vbe should be allowed mmap_zero access on the memprotect by d efault. Then you should report this as a bug. You can generate a local policy module to allow this access. Do allow this access for now by executing: # grep monitor-get-edi /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp ------ and then this final message Aug 20 14:02:42 opennms-h-03 dbus-daemon: 'list' object has no attribute 'split' Do either of those look fatal? And where else should I look for the underlying problem? -- Les Mikesell lesmikesell(a)gmail.com

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Re: [CentOS] Skype on CentOS 6.5
by James B. Byrne 21 Aug '14

21 Aug '14

On Tue, August 19, 2014 08:20, Liam O'Toole wrote: > > I upgraded to your shiny new Skype a few days ago. Thanks for your > packaging work. > Has anyone tried using FreeCall or TOX as an alternative to Skype? Further, I am curious as to what components of Skype on Linux are open to source review and which are not. My recent inquiries have raised the unsettling possibility that recent Skype clients may be designed to permit remote exploitation of host systems by unauthorised entities. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Trying to override MAC addr
by Robert Moskowitz 21 Aug '14

21 Aug '14

I am trying to override the mac addr. Now this is on an armv7 actually running the F19 kernel and Redsleeve 6, but it SHOULD be standard Centos6 ifcfg-eth0 content. Of course RSEL does not start with a ifcfg-eth0 file, letting network services do all the work, so I am starting from scratch, using the file from one of my C6 boxes with static addressing. My file has in it: DEVICE="eth0" BOOTPROTO=none NM_CONTROLLED="no" ONBOOT="yes" TYPE="Ethernet" NAME="System eth0" DNS1=208.83.67.188 GATEWAY="208.83.67.177" IPADDR="208.83.67.179" HOSTNAME="rigel2.htt-consult.com" IPV6INIT="yes" MACADDR=02:67:15:00:01:79 MTU=1500 And when I restart network, it can't find eth0: # service network restart Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth0: Device eth0 does not seem to be present, delaying initialization. [FAILED] but: # ifconfig eth1 Link encap:Ethernet HWaddr 02:67:15:00:01:79 inet addr:208.83.67.179 Bcast:208.83.67.255 Mask:255.255.255.0 inet6 addr: 2607:f4b8:3:3:67:15ff:fe00:179/64 Scope:Global inet6 addr: fe80::67:15ff:fe00:179/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:254 errors:0 dropped:17 overruns:0 frame:0 TX packets:70 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:26575 (25.9 KiB) TX bytes:6104 (5.9 KiB) Interrupt:87 Base address:0x6000 The assigned MAC addr for eth0 is: 02:c3:04:01:77:c3 The tutorials that I have found on ifcfg-ethN say not to use both hwaddr and macaddr in the same cfg file, but it almost seems that is what is needed? thanks

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Re: [CentOS] Trying to override MAC addr
by Robert Moskowitz 21 Aug '14

21 Aug '14

On 08/21/2014 10:56 AM, Reindl Harald wrote: > > Am 21.08.2014 um 16:43 schrieb Robert Moskowitz: >> On 08/21/2014 10:32 AM, m.roth(a)5-cent.us wrote: >>> Keith Keller wrote: >>>> On 2014-08-21, John R Pierce <pierce(a)hogranch.com> wrote: >>>>> On 8/21/2014 7:09 AM, Robert Moskowitz wrote: >>>>>> I am trying to override the mac addr. >>>>> pretty sure you need to use NIC model specific utilities to do this, >>>>> ifcfg-ethN won't do it. the hwaddr= in there is for finding the nic, >>>>> not for reprogramming it. >>>> ifconfig claims to support it: >>>> >>>> hw class address >>> <snip> >>> Also, don't forget /etc/udev/rules.d/70-persistant-net.rules >> I can't forget what I don't know. please point me to description of >> these rules? > just look at the file > > in the past and on CentOS before RHEL7 it was to assign MAC/device-names > at boot, on recent Redhat based systems just remove it and stick with > place both in the ifcfg-files while disable biosdevname and systemd > devicenames at boot > > both, that udev rules and what i explained you may collide or at least > you need to change the MAC there too to not confuse the configs > I worked a bit on this. I no longer have the MAC or HW addrs in ifcfg-eth0. Only in /etc/udev/rules.d/70-persistent-net.rules, and only for name=eth0: # net device () SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="02:67:15:00:01:79", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" but on reboot, I get the error: Bringing up interface eth0: Device eth0 does not seem to be present, delaying initialization. [FAILED] and the ethernet comes up as eth1 and the eth1 line is added to /etc/udev/rules.d/70-persistent-net.rules Almost as if there is something else that needs changing.

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Re: [CentOS] Trying to override MAC addr
by Robert Moskowitz 21 Aug '14

21 Aug '14

Did not work... On 08/21/2014 10:15 AM, Reindl Harald wrote: > > Am 21.08.2014 um 16:09 schrieb Robert Moskowitz: >> I am trying to override the mac addr. Now this is on an armv7 actually >> running the F19 kernel and Redsleeve 6, but it SHOULD be standard >> Centos6 ifcfg-eth0 content. Of course RSEL does not start with a >> ifcfg-eth0 file, letting network services do all the work, so I am >> starting from scratch, using the file from one of my C6 boxes with >> static addressing. My file has in it: >> >> DEVICE="eth0" >> BOOTPROTO=none >> NM_CONTROLLED="no" >> ONBOOT="yes" >> TYPE="Ethernet" >> NAME="System eth0" >> DNS1=208.83.67.188 >> GATEWAY="208.83.67.177" >> IPADDR="208.83.67.179" >> HOSTNAME="rigel2.htt-consult.com" >> IPV6INIT="yes" >> MACADDR=02:67:15:00:01:79 >> MTU=1500 > that's easy - you need to tell it the physical too > works from Fedora 10 up to Fedora 20 that way > > [root@srv-rhsoft:~]$ cat ifcfg-eth1 > DEVICE=eth1 > HWADDR=68:05:ca:0d:62:c1 > MACADDR=00:50:8d:b5:cc:de > > "00:50:8d:b5:cc:de" is the on my interface has after it is up > "68:05:ca:0d:62:c1" is the pysical one of the device before fake it > > [root@srv-rhsoft:~]$ ifconfig eth1 > eth1: flags=67<UP,BROADCAST,RUNNING> mtu 1500 > inet 62.178.103.85 netmask 255.255.255.0 broadcast 255.255.255.255 > ether 00:50:8d:b5:cc:de txqueuelen 500 (Ethernet) > RX packets 74959980 bytes 25037014848 (23.3 GiB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 67607627 bytes 39867204808 (37.1 GiB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > device interrupt 16 memory 0xf7cc0000-f7ce0000 > # cat > /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE="eth0" BOOTPROTO=none NM_CONTROLLED="no" ONBOOT="yes" TYPE="Ethernet" NAME="System eth0" HWADDR=02:c3:04:01:77:c3 MACADDR=02:67:15:00:01:79 MTU=1500 DNS1=208.83.67.188 GATEWAY="208.83.67.177" IPADDR="208.83.67.179" HOSTNAME="rigel2.htt-consult.com" IPV6INIT="yes" [root@redsleeve ~]# service network restart Shutting down loopback interface: [ OK ] Bringing up loopback interface: [ OK ] Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring. [FAILED] And now not even an eth1 interface.

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