Dear folks,
After updating some of our servers to CentOS 6.8, we've noticed that the
ones using pam_sss.so for authentication, appear to be suffering from a
leak of sorts.
On these systems, the /var partition is running out of disk space, and
we eventually noticed that it's because of deleted, but still open files
like these:
httpd 1081 apache 8r REG 253,2 6406312
6199 /var/lib/sss/mc/group (deleted)
sshd 1609 root 3r REG …
[View More]253,2 8406312
431 /var/lib/sss/mc/passwd (deleted)
mysqld 2018 mysql 4r REG 253,2 10406312
436 /var/lib/sss/mc/initgroups (deleted)
Each time any process uses pam in some way, it's opening these cache
files in /var/lib/sss/mc, but not closing them, and they're
accumulating. The reason they're accumulating is that the initgroups,
group and password file are frequently refreshed (by sssd), and so each
open() call to them looks at a new file.
We traced the sshd process, and noticed this:
open("/var/lib/sss/mc/passwd", O_RDONLY|O_CLOEXEC) = 3
But there is no matching "close(3)" call anywhere (all other files
opened have a matching close() system call).
Has anyone else seen this issue, and does anyone know a quick solution
to this?
Regards,
Anand
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Notice:
The kernel modules for Virtualbox 5.0.20 will not compile on the
latest C6.8 kernel 2.6.32-642.el6.x86_64
It's a known issue.
https://www.virtualbox.org/ticket/14866
Fix is coming out with Virtualbox 5.0.22 version (hopefully soon).
Hi,
The title says it all. What's the minimum RAM requirement for the CentOS
6.x graphic installer? In our public libraries we have some old hardware
running CentOS 5, and I wonder if some of these machines can be upgraded
to CentOS 6. Unfortunately RHEL 5.x' nifty text mode installer got
seriously crippled with version 6.x.
Cheers,
Niki Kovacs
--
Microlinux - Solutions informatiques durables
7, place de l'église - 30730 Montpezat
Web : http://www.microlinux.fr
Mail : info(a)microlinux.fr
…
[View More]Tél. : 04 66 63 10 32
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On Thu, 2016-06-02 at 13:27 +0100, Mike Brudenell wrote:
> My point is that a busy sysadmin shouldn't have to rely on intimate
> knowledge of Exim's internal behaviour and oddities when trying
> tracing a message from the logs.
Some of us, well at least 1, have written a simple PHP programme, run on
Apache, which instantly searches the current log and the archived logs
for anything in the logs.
Tracing items in Exim could not be quicker or easier - all done from the
comfort of a web …
[View More]page with no terminal CLI or GREP insight.
--
Regards,
Paul.
England, EU. England's place is in the European Union.
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Hi folks,
I have a problem, shame on me I feel as newbie, I cannot open Firefox
though ssh.
ssh server is 7.2 and ssh client (running Xorg) is Fedora 23. Firefox does
not open. I've tried a lot of methods, even adding xauth cookie, and for
example:
firefox --no-remote --no-xshm
debug3: receive packet: type 90
debug1: client_input_channel_open: ctype x11 rchan 2 win 65536 max 16384
debug1: client_request_x11: request from 127.0.0.1 59181
debug2: fd 7 setting O_NONBLOCK
debug3: fd 7 is …
[View More]O_NONBLOCK
debug1: channel 1: new [x11]
debug1: confirm x11
debug3: send packet: type 91
debug3: receive packet: type 90
debug1: client_input_channel_open: ctype x11 rchan 3 win 65536 max 16384
debug1: client_request_x11: request from 127.0.0.1 59183
debug2: fd 8 setting O_NONBLOCK
debug3: fd 8 is O_NONBLOCK
debug1: channel 2: new [x11]
debug1: confirm x11
debug3: send packet: type 91
debug2: channel 2: rcvd adjust 39228
I need to open a browser, ok, I could install konqueror, but it pulls a
bunch of apps that really I don't need. I'd want to install a browser from
official repo...
Could you help me?
--
--
Sergio Belkin
LPIC-2 Certified - http://www.lpi.org
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Hi Guys,
Anyone have any information on bugzilla 1324635. This seems like a private
bug being tracked by redhat but is major and impacting us. Basically nfs
gets impacted with large writes.
Thanks!
On Thu, 2 Jun 2016 06:36:51 +0200 Nicolas Kovacs wrote:
> The title says it all. What's the minimum RAM requirement for the CentOS
> 6.x graphic installer? In our public libraries we have some old hardware
> running CentOS 5, and I wonder if some of these machines can be upgraded
> to CentOS 6. Unfortunately RHEL 5.x' nifty text mode installer got
> seriously crippled with version 6.x.
I think that if you feed the install a kickstart file, it will install in accordance with what …
[View More]you told it, but that does mean you have to spend some time figuring out what to put in your kickstart first. This would also give you some consistency between systems.
Or you could let the 6.x "text installer" install it's minimal system, and then comeback and yum install everything else afterwards. fewer choices to make, but you get to live with RH's ideas of sane partition sizes.
Another option for installing on smaller machines is to use the live disk[1] and a few tweaks[2] to do the install. However it will mean some hand holding on each machine to make it work, but I have done it and been reasonably happy with the resulting system. Note on a really small system (512MB or smaller), the use of zram (with the normal centos kernel, and swappiness~99), or zswap (with the elrepo kernel-ml) will make the system operate a lot better. It is too bad the live disks to not enable zram while booting when they don't find a linux swap part.
[1] Have not seen the 6.8 live disk announce yet, https://lists.centos.org/pipermail/centos-announce/2015-August/021304.html
[2] "HOWTO install CentOS 6 on low memory computer or virtual machine (even 192MB RAM)"
https://lists.centos.org/pipermail/centos/2011-July/115367.html
Even when this disclaimer is not here:
I am not a contracting officer. I do not have authority to make or modify the terms of any contract.
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I am trying to install Centos 7 on a couple 4TB drives with software
raid. In the Supermicro bios I set UEFI/BIOS boot mode to legacy. I
am using the Centos 7 minimal install ISO flashed to a USB thumb
drive.
So I do custom drive layout something like this using sda and sdb.
Create /boot as 512 MB XFS raid1 array.
Create SWAP as 32 GB SWAP raid1 array.
Create / on 3.xxx TB XFS raid1 array.
I then get error.
"Your BIOS-based system needs a special partition to boot from a GPT
disk label. …
[View More] To countinue, please create a 1MiB 'biosboot' type
partition."
I cannot seem to create the biosboot partition so it is mirrored to
both drives for redundancy. Any ideas how to do this? I want
everything mirrored to both drives.
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