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34745 discussions

iptables routing question when using multiple IP addresses
by Ken Gramm 16 Feb '18

16 Feb '18

I've been searching around for a couple of days, and I just can't seem to find the answer I'm looking for. I have a 6.x box that I use as my gateway firewall. It has three NICs; 1 external, 1 internal, 1 for a guest network. I have various inbound traffic routed to separate internal machines based on the application (ie. http, smtp, ftp, etc....). All works well, but I'd like to add a second IP address to the external NIC and then route a second https stream to a different internal machine. So https traffic on one IP address goes to one internal machine and https traffic on a second IP address goes to a different internal machine. Seems like it should be an everyday configuration, but I can't find any clear examples on how to do it. Could someone please point me in the right direction? Thanks, Ken Gramm

2 1

Percentage of CentOS coded in each language
by Blake Hudson 16 Feb '18

16 Feb '18

Had a curious question about how much of Linux (as a usable distribution, not just the kernel) is coded in each language. I can find some older or vague references without citation that Linux is largely coded in C and C++, with a fraction of a percent coded in other languages. While the source is available, I'm not sure how would one go about determining the percentage of CentOS coded in each language (either by lines of source code or by RPM package). Anyone have any suggestions for determining this info? Someone already have the answer? Thanks, --B

3 2

CentOs7 and devtoolset-7 and libgcc_s.so.1 library question
by ToD In 16 Feb '18

16 Feb '18

I'm looking for the library from subject. It is present in system gcc (4.8.5) but I cannot see it in devtoolset-7. Could You please tell me why is it so?

1 0

CentOS7 1801-01 cloud images
by Pierre Riteau 15 Feb '18

15 Feb '18

Hello, There is a new cloud image versioned as 1801-01 available at https://cloud.centos.org/centos/7/images/ However, it is missing from the image-index file. I noticed the Azure version is also absent. Was there a problem with the image build process? Should this image be used? Thanks, Pierre Riteau Chameleon Lead DevOps Engineer https://www.chameleoncloud.org

2 1

FOSDEM Dojo update, videos
by Rich Bowen 14 Feb '18

14 Feb '18

A big thank you to everyone who attended the CentOS Dojo in Brussels a week ago. We had about 75 people in attendance (101 registered) and we had two tracks of great presentations. If you did not make it to the event, you can still catch all of the presentations on our YouTube channel, at https://www.youtube.com/user/TheCentOSProject/playlists Unfortunately, you miss out on the great hallway track, but there's always next year! Meanwhile, keep a lookout for upcoming events - http://wiki.centos.org/Events - and try to attend a dojo near you in the coming months. And if you'd like to host or help organize a dojo, please get in touch with me, or with the centos-promo mailing list - centos-promo(a)centos.org - with your suggestions, and we'll try to make it happen. --Rich -- Rich Bowen - rbowen(a)redhat.com @RDOcommunity // @CentOSProject // @rbowen

2 2

kmod c74 broken: howto report it
by Stijn De Weirdt 14 Feb '18

14 Feb '18

hi all, latest kmod update 20-15.el7_4.6 is broken on our systems, while previous 20-15.el7_4.4 was working fine (and downgrading fixes the issue). the issue is with modules from mellanox kmod rpms that are symlinked in the weak-updates dir. the config files in /etc/depmod.d look ok (and do work with previous version): dist.conf has weak-updates after built-in, and mellanox kmod rpms ship a config that overrides it for all modules. anyhow, before i try to get this upstream, how do i report this with centos team (to make sure the centos kmod rpm was correctly build). (i have already asked here before how to properly report it, but can't find my previous mail ;) stijn

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Re: [CentOS] CentOS 6: Yum downloadonly changes local source repositories (and CentOS 7)
by Danny Smit 14 Feb '18

14 Feb '18

For what its worth, I managed to get around the problem with a small patch on yum itself: --- ORIG/usr/lib/python2.6/site-packages/yum/yumRepo.py 2017-03-22 05:32:26.000000000 +0000 +++ NEW/usr/lib/python2.6/site-packages/yum/yumRepo.py 2018-02-14 09:14:04.879902463 +0000 @@ -863,6 +863,7 @@ class YumRepository(Repository, config.R text=text, cache=cache, size=package.size, + copy_local=1, ) def getHeader(self, package, checkfunc = None, reget = 'simple', Although newer versions of yum do not rename the local package anymore, it still does not copy/download the package into the desired "downloaddir". I will try to report that upstream. Regards, Danny On Tue, Feb 13, 2018 at 6:05 PM, Danny Smit <danny.smit.0(a)gmail.com> wrote: > Hi All, > > I'm trying to use yum with the downloadonly option to collect a set of > packages including dependencies. I noticed that even on CentOS 6 the > downloadonly option is currently a default feature of the core of yum > itself, which is nice. > > However something strange occurs when one of the repositories to > download from is a local repository, like: > > [custom-repo] > name=My custom repo > baseurl=file:///repositories/mycustomrepo/ > > I added such a repo to my yum configuration and then executed: > > yum install -y --downloadonly --downloaddir=downloads custom_package > > When executing the above the package in question is suddenly renamed from: > > /repositories/mycustomrepo/x86_64/custom_package-1.1-2.el6.x86_64.rpm > > to > > /repositories/mycustomrepo/x86_64/custom_package-1.1-2.el6 > > Note that the architecture part and file extension are removed with > the file in the local repo, where I wouldn't expect yum to even try to > change something there. > Also nothing is downloaded into the downloads dir as specified. > > Strangely when it concerns a package that comes from a repository that > is configured as an http URL, the download option works flawlessly. > > Has anyone else seen this behavior? Is it a bug? Or is there a way around this? > Actually I would even prefer not having to run yum as root for this, > unfortunately yum to require write access to lock files in /var/. > > Platform: CentOS 6.9 (also not working with CentOS 7, then it keeps > the file intact, but doesn't download either) > Yum: 3.2.29-81.el6.centos > > Kind regards, > Danny

1 0

selinux policy with rsyslog and tls/certs
by John Ratliff 13 Feb '18

13 Feb '18

I've setup my rsyslog server to forward traffic to another rsyslog server on my network. It's using gTLS to encrypt the messages in transit. selinux is not allowing rsyslogd to read the certificates. They are world readable, so I don't think that is the problem. When I turn selinux mode to permissive, it works fine. What context should the ssl certificates be in for rsyslog to be able to read them? thanks.

1 1

Two MACs for one IP
by m.roth＠5-cent.us 13 Feb '18

13 Feb '18

The reason I want to assign one IP to two MAC addresses is that I have one (and only one) user for whom I have to spoof the MAC address (it's a case of stupid software licensing). But... his system is encrypted. Now, we're using clevis to allow reboots without someone being at the keyboard to type in the password. Those of you who've looked at clevis see where this is going: clevis uses the *real* firmware MAC address to get the key from the latchset server... while currently, the dhcpd *only* knows the spoofed MAC address. After the system's unlocked, it boots, and comes up with the spoofed MAC address. It *appears* I can do this, but I thought I'd ask here if there were any issues that dhcpd itself would have if I do. mark

1 0

CentOS 6: Yum downloadonly changes local source repositories
by Danny Smit 13 Feb '18

13 Feb '18

Hi All, I'm trying to use yum with the downloadonly option to collect a set of packages including dependencies. I noticed that even on CentOS 6 the downloadonly option is currently a default feature of the core of yum itself, which is nice. However something strange occurs when one of the repositories to download from is a local repository, like: [custom-repo] name=My custom repo baseurl=file:///repositories/mycustomrepo/ I added such a repo to my yum configuration and then executed: yum install -y --downloadonly --downloaddir=downloads custom_package When executing the above the package in question is suddenly renamed from: /repositories/mycustomrepo/x86_64/custom_package-1.1-2.el6.x86_64.rpm to /repositories/mycustomrepo/x86_64/custom_package-1.1-2.el6 Note that the architecture part and file extension are removed with the file in the local repo, where I wouldn't expect yum to even try to change something there. Also nothing is downloaded into the downloads dir as specified. Strangely when it concerns a package that comes from a repository that is configured as an http URL, the download option works flawlessly. Has anyone else seen this behavior? Is it a bug? Or is there a way around this? Actually I would even prefer not having to run yum as root for this, unfortunately yum to require write access to lock files in /var/. Platform: CentOS 6.9 (also not working with CentOS 7, then it keeps the file intact, but doesn't download either) Yum: 3.2.29-81.el6.centos Kind regards, Danny

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