Discuss June 2018

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93 participants
85 discussions

C 7: smpboot: CPU 16 is now offline
by m.roth＠5-cent.us 13 Jun '18

13 Jun '18

Current kernel, and I just booted, and dmesg shows, of the 32 cores, 0, 2, 4 and 6 ok, and *all* other show "is now offline. What's happening here? mark

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CentOS-announce Digest, Vol 160, Issue 2
by centos-announce-request＠centos.org 13 Jun '18

13 Jun '18

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://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. Announcing release of HAProxy 1.8 on CentOS 7 x86_64 (Jan Stan?k) 2. Announcing release of MongoDB 3.6 on CentOS 7 x86_64 (Jan Stan?k) 3. Announcing release of Perl 5.26 on CentOS 7 x86_64 (Jan Stan?k) 4. Announcing release of PostgreSQL 10.0 on CentOS 7 x86_64 (Jan Stan?k) 5. Announcing release of Ruby 2.5 on CentOS 7 x86_64 (Jan Stan?k) 6. Announcing release of Varnish Cache 5 on CentOS 7 x86_64 (Jan Stan?k) ---------------------------------------------------------------------- Message: 1 Date: Tue, 12 Jun 2018 15:20:13 +0200 From: Jan Stan?k <jstanek(a)redhat.com> To: centos-announce(a)centos.org Subject: [CentOS-announce] Announcing release of HAProxy 1.8 on CentOS 7 x86_64 Message-ID: <c2cb0e51-90f7-3c18-5dd1-884a545f2bdb(a)redhat.com> Content-Type: text/plain; charset="utf-8" I am pleased to announce the immediate availability of HAProxy in version 1.8 on CentOS Linux 7 x86_64, delivered via a Software Collection (SCL) built by the SCLo Special Interest Group (https://wiki.centos.org/SpecialInterestGroup/SCLo) QuickStart ---------- You can get started in three easy steps: # 1. Install a package with repository for your system: # On CentOS, install package centos-release-scl available in CentOS repository: $ sudo yum install centos-release-scl # On RHEL, enable RHSCL repository for you system: $ sudo yum-config-manager --enable rhel-server-rhscl-7-rpms # 2. Install the collection: $ sudo yum install rh-haproxy18 # 3. Start using software collections: $ scl enable rh-haproxy18 bash At this point you should be able to use varnish just as a normal application. Some usage examples follow: $ systemctl start rh-haproxy18-haproxy This collections is CentOS-based rebuild built by SCLo SIG community, and the packages have been available in Red Hat Software Collections 3.1 for RHEL: https://access.redhat.com/documentation/en-us/red_hat_software_collections/… So, for RHEL-based builds, follow the steps in the documentation above. About Software Collections -------------------------- Software Collections give you the power to build, install, and use multiple versions of software on the same system, without affecting system-wide installed packages. Each collection is delivered as a group of RPMs, with the grouping being done using the name of the collection as a prefix of all packages that are part of the software collection. The SCLo SIG in CentOS ---------------------- The Software Collections SIG group is an open community group co-ordinating the development of the SCL technology, and helping curate a reference set of collections. In addition to the collection NodeJS being released here, we also build and deliver databases, web servers, and language stacks including multiple versions of PostgreSQL, MariaDB, Apache HTTP Server, Python, Ruby, Ruby on Rails and others. You can learn more about Software Collections concepts at: http://softwarecollections.org You can find information on the SIG at https://wiki.centos.org/SpecialInterestGroup/SCLo ; this includes how to get involved and help with the effort. Enjoy! -- Jan Stan?k Associate Software Engineer, Brno Red Hat Czech jstanek(a)redhat.com IM: jstanek

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centos+unsubscribe@centos.org
by Ahmed Hassan 13 Jun '18

13 Jun '18

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Generic linux question: sysctl and swiotlb
by m.roth＠5-cent.us 12 Jun '18

12 Jun '18

Anyone know if I can increase the size of swiotlb using sysctl, rather than waiting to reboot? mark

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Articles on OpenSSH and Personal Git
by Alice Wonder 11 Jun '18

11 Jun '18

Hi, Wrote a couple articles on OpenSSH and on running your Git server in a CentOS 7 environment https://notrackers.com/the-command-line/openssh-primer/ and https://notrackers.com/the-command-line/setting-up-your-own-git-server/ And the domain name is honest, there no trackers on that blog. None. (that blog is actually for a WordPress project not ready for general use but it seemed like a good place for the articles too) -=- I am sure they aren't perfect, but they may be of assistance to some. Any blatant mistakes, I am not above correction. Git article needs SELinux instructions added for web content served outside of /var/www/html and the public web git viewer I'm planning to fork to fix some issues I have it (I'll contribute patches back if they want them) I still need to find a CI solution (alternate to Travis-CI) that works just from standard Git - e.g. a git hook when pushing commits or tagging a release that pings the CI solution causing it to do a standard git pull to run the build and unit tests.

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/etc/gai.conf fails to prefer IPv4 over IPv6 for NFS
by sr＠genyosha.net 11 Jun '18

11 Jun '18

Using CentOS 6.9 with IPv4 configured, and _not_ disabling IPv6 yet, we want this NFS client system to prefer the IPv4 address of a dual-stack remote NFS server, which has both A and AAAA records in DNS. Otherwise we get a minutes long pause while automounter tries to mount the IPv6 address -- I can see automounter's '/bin/mount' running, using the AAAA record of the server, until that times-out and the IPv4 address of the server mounts successfully. Disabling IPv6 altogether works around the problem as expected, but is a bigger hammer than we wanted to use. :-) I found posts from others in a similar situation, and proposed solutions included modifying /etc/gai.conf to use: precedence ::ffff:0:0/96 100 I cp'd /usr/share/doc/glibc-common-2.12/gai.conf to /etc/ and tried that, with several other permutations (e.g. uncommenting other blocks of "label" and "precedence" settings) but none achieved the desired effect. Am I misunderstanding how this is supposed to work? Cheers, sr. -- || Steve Rikli ||| Well, we've stared at it... that oughta || || Systems Administrator ||| fix it! Let's get outta here. || || Genyosha Networks ||| || || sr(a)genyosha.net ||| - Crow, MST3K ||

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squishy bell
by Michael Hennebry 11 Jun '18

11 Jun '18

Both Gnome and KDE give me a loud squishy bell at the thought of the drop of a hat. I did not get that in C6. I infer it is a C7-specific thing. Short of disabling my audio altogether, how do I make it go away? Not one of C7's better features. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

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C7, kernel oops, sllub.c
by m.roth＠5-cent.us 11 Jun '18

11 Jun '18

Anyone else seeing this: I've seen it with different line # as an upstream bug: kernel BUG at mm/slub.c:3601. When I look for slub.c, I think I found a slightly different version, since that's a blank line, but it's in the function slab_memory_callbac. On a possibly related note, one of my users who runs debian has been getting a ton of radeon errors... and guess what, it's to do with slab_callback. Anyone want me to post the backtrace from the abort? mark

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Problem with bugs.centos.org
by Nicolas Kovacs 11 Jun '18

11 Jun '18

Hi, I wanted to create an account on bugs.centos.org to report a minor but annoying bug with Dolphin. After trying to register by providing the login (kikinovak) and email address (info(a)microlinux.fr) I'm told that the email is already in use. Uh oh. Maybe I already created an account years ago and then forgot about it. So I click on the field for forgotten passwords, only to be told that there is no one under that name or email address. So I'm hitting a wall. Maybe one of the admins of bugs.centos.org is reading this and can help me out? Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Blog : https://blog.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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Centos 7 and priorities
by Michael Hennebry 11 Jun '18

11 Jun '18

I've recently changed to Centos 7. My recollection from C6 is that a couple useful repositories need yum priorities to prevent some mixups. I do not remember what they are. My C6 is gone. Google has not told me what C6 repositories were. In the near future, I will be installing nux and epel. My understanding is that they do play well with each other and with base. Are there common useful C7 repositories that need help playing well with the aforementioned repos? Is there a FAQ or a FM on this? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

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Discuss June 2018