Discuss October 2019

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120 discussions

CentOS 8: what changed (regular UNIX admin commands)?
by Valeri Galtsev 24 Oct '19

24 Oct '19

Hello Experts! I'm sure many of you run CentOS for some time already. My question is: is there some place that lists which of the most often used sysadmin commands are gone and what are replacements for them. Or what else one needs to do after successful installation. (in the past it was process accounting that was not enabled by default, but which gives you quite some handle in investigating compromise). I just tried quite ordinaly command of freshly installed CentOS 8: last and got an error: last: (default utx db): No such file or directory I realize that it could be just me, and I'll cope with that myself one way or another but this one prompted me to ask everybody: Is there anything I can read so I can learn what differenmt to expect on CentOS 8 from, say, CentOS 7? Thanks. Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++

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rsync: did not see server greeting.
by Ralf Prengel 24 Oct '19

24 Oct '19

Hallo, until last week I used a debian system for syncing debian and centos mirrors. Everything worked fine for years. After installing centos 7 rsync doesn t work any longer. The configuration of the firewall is the same as before. The message I see is rsync: did not see server greeting. Has anyone a hint for me? Are ther any main differences between rsync debian and rsync centos? Thanks Ralf

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CentOS-announce Digest, Vol 176, Issue 4
by centos-announce-request＠centos.org 23 Oct '19

23 Oct '19

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. CEEA-2019:3090 CentOS 6 microcode_ctl Enhancement Update (Johnny Hughes) 2. CESA-2019:3158 Moderate CentOS 6 java-1.7.0-openjdk Security Update (Johnny Hughes) 3. CESA-2019:3136 Important CentOS 6 java-1.8.0-openjdk Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 22 Oct 2019 23:50:21 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEEA-2019:3090 CentOS 6 microcode_ctl Enhancement Update Message-ID: <20191022235021.GA31681(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2019:3090 Upstream details at : https://access.redhat.com/errata/RHEA-2019:3090 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 725d3cdafeeb4a7a628d326bceb056e839aec477684b591cac789a1d6ff5fafe microcode_ctl-1.17-33.17.el6_10.i686.rpm x86_64: 353cc5758e1c8a947f013e9a02724711545a96addd13c4f514bf3cd4f0b7445b microcode_ctl-1.17-33.17.el6_10.x86_64.rpm Source: 01db206c25a54073966543146d3f0b021c616e82a820dd73c109ad35f5c57d7d microcode_ctl-1.17-33.17.el6_10.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 2 Date: Tue, 22 Oct 2019 23:51:11 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2019:3158 Moderate CentOS 6 java-1.7.0-openjdk Security Update Message-ID: <20191022235111.GA31878(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2019:3158 Moderate Upstream details at : https://access.redhat.com/errata/RHSA-2019:3158 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 920db5e1a1a95dc4f3f3728b5a529f727016386cb36b160395873bb40a985978 java-1.7.0-openjdk-1.7.0.241-2.6.20.0.el6_10.i686.rpm c9942f1791ee8623f79f4fd99807fa62393c1060c4f950c0366b4f04c037893a java-1.7.0-openjdk-demo-1.7.0.241-2.6.20.0.el6_10.i686.rpm 20668b5e1c9c7dfd623eea1618ef55665c4e7c372ecf0709c17614850d188330 java-1.7.0-openjdk-devel-1.7.0.241-2.6.20.0.el6_10.i686.rpm 64a3f1ec71a01e81a4e51477a08ee15fc875bb6cd0f10b6844d8c1380f2efca0 java-1.7.0-openjdk-javadoc-1.7.0.241-2.6.20.0.el6_10.noarch.rpm fee025d3e052f9f47a269fd03bff36e7f981ef26e893058ee8bf91ed797a82d9 java-1.7.0-openjdk-src-1.7.0.241-2.6.20.0.el6_10.i686.rpm x86_64: d6b7995bc1a50a721518ebf798c318f787241678cb45522505a25b7fbf42de6b java-1.7.0-openjdk-1.7.0.241-2.6.20.0.el6_10.x86_64.rpm 6eecff6ad0c2bd7969d9447f4bf2a0d31a68b0b57ca2cd45ec4fd4987c69814e java-1.7.0-openjdk-demo-1.7.0.241-2.6.20.0.el6_10.x86_64.rpm e838744014ea5b6df216b644c739e6bb84829a59d2ef19cf9275aa52f18fb6cc java-1.7.0-openjdk-devel-1.7.0.241-2.6.20.0.el6_10.x86_64.rpm 64a3f1ec71a01e81a4e51477a08ee15fc875bb6cd0f10b6844d8c1380f2efca0 java-1.7.0-openjdk-javadoc-1.7.0.241-2.6.20.0.el6_10.noarch.rpm 89739d98fc1c0c559a56fe1b66253bea13f0fee0f11ebafc1ba021f178994f20 java-1.7.0-openjdk-src-1.7.0.241-2.6.20.0.el6_10.x86_64.rpm Source: 4d2fe39bf8ae6fc4baf16908fcc8dd1a1dd3c83d634407d3d4b4535b81489b85 java-1.7.0-openjdk-1.7.0.241-2.6.20.0.el6_10.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 3 Date: Tue, 22 Oct 2019 23:52:58 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2019:3136 Important CentOS 6 java-1.8.0-openjdk Security Update Message-ID: <20191022235258.GA32230(a)bstore1.rdu2.centos.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2019:3136 Important Upstream details at : https://access.redhat.com/errata/RHSA-2019:3136 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 4a033eb620235ed90ba9cdd872220ce0b5541d1aa53f9488e33da31d39b6a837 java-1.8.0-openjdk-1.8.0.232.b09-1.el6_10.i686.rpm 84b02feb3c00f5964bbd462a1dfa36f69cb04e12363c3a08ddc49520350644e1 java-1.8.0-openjdk-debug-1.8.0.232.b09-1.el6_10.i686.rpm ecf653c29a99a7fdc2592b19742dbc5ce2323ff61f6c741e83c7c7fd2b896af8 java-1.8.0-openjdk-demo-1.8.0.232.b09-1.el6_10.i686.rpm fab4ca01f29c3fc9726105b9219cf428164d0c73805034e11569faed98079983 java-1.8.0-openjdk-demo-debug-1.8.0.232.b09-1.el6_10.i686.rpm e5230283370e6e6dc438b0a7b9dfac1ea083e50ea571914133aa9c7176cc48d9 java-1.8.0-openjdk-devel-1.8.0.232.b09-1.el6_10.i686.rpm a6ab154e5f62b016d35cb362a827590e899cefa2d04effe4b359c917b13c604e java-1.8.0-openjdk-devel-debug-1.8.0.232.b09-1.el6_10.i686.rpm c8e59462ba88aa263f43f305444d1c1dbcb0f8b4afdbcc9ecbf47611bc2027a3 java-1.8.0-openjdk-headless-1.8.0.232.b09-1.el6_10.i686.rpm c30274dbf23416a6009cbf84063cdd6ded0d8a96003075f50af7fec91c7b86bc java-1.8.0-openjdk-headless-debug-1.8.0.232.b09-1.el6_10.i686.rpm 0898c60f1e01f648d21cf5d6cb9c822c4475ad508351657b5f7f5e8116f74df3 java-1.8.0-openjdk-javadoc-1.8.0.232.b09-1.el6_10.noarch.rpm 588a685b40fb9d41f051e9b137cbeebc3cc00cd917d44c199e77921a42c81fe1 java-1.8.0-openjdk-javadoc-debug-1.8.0.232.b09-1.el6_10.noarch.rpm 188f0b490f8f21811ba2a34297e679ad93288b673167445e4afd94014f4dafdf java-1.8.0-openjdk-src-1.8.0.232.b09-1.el6_10.i686.rpm b19f88a0c41a66452e180eb3a5d9c92cbd1d858c4ebb18c8565e2c35a12caeae java-1.8.0-openjdk-src-debug-1.8.0.232.b09-1.el6_10.i686.rpm x86_64: 91c59406e1ce01c8b69191419d2cb55413ae7492c17dd5df859088e0f1610ef6 java-1.8.0-openjdk-1.8.0.232.b09-1.el6_10.x86_64.rpm 80c97d5faf0e35d30ccbcbe4299fef26b9774ed2068f432f22cb25d0c089b1ac java-1.8.0-openjdk-debug-1.8.0.232.b09-1.el6_10.x86_64.rpm da1b163304559ce426aac61660fb7166db498381e60ba4f5c807a4d75d8e8bb1 java-1.8.0-openjdk-demo-1.8.0.232.b09-1.el6_10.x86_64.rpm 0cd2b5c5b0c05fb7b3212a02aa4dcdd5c681e6f1d8f3ada4f887257bdce70ccf java-1.8.0-openjdk-demo-debug-1.8.0.232.b09-1.el6_10.x86_64.rpm 0996a5c3af15cc20c278594d40c6c258a040cbe44a177b36b153c63d36314590 java-1.8.0-openjdk-devel-1.8.0.232.b09-1.el6_10.x86_64.rpm dd4e8489ba89893c034478fd4dc25ae501a3532182e4be4ed82a9bac4940af95 java-1.8.0-openjdk-devel-debug-1.8.0.232.b09-1.el6_10.x86_64.rpm 6ad5a612a66e7025b144c4d61f5bb615e4ca4166f7a7281bc090e579839a0b2c java-1.8.0-openjdk-headless-1.8.0.232.b09-1.el6_10.x86_64.rpm 69332c911f7dbda5e53d41a9e4042f87d061e4f982108c71531ba0c0256fcdee java-1.8.0-openjdk-headless-debug-1.8.0.232.b09-1.el6_10.x86_64.rpm 0898c60f1e01f648d21cf5d6cb9c822c4475ad508351657b5f7f5e8116f74df3 java-1.8.0-openjdk-javadoc-1.8.0.232.b09-1.el6_10.noarch.rpm 588a685b40fb9d41f051e9b137cbeebc3cc00cd917d44c199e77921a42c81fe1 java-1.8.0-openjdk-javadoc-debug-1.8.0.232.b09-1.el6_10.noarch.rpm 7c1ca36c37f1f7352736d5dd9989ab3c07cb95a14d9ce06f1888b7957a332510 java-1.8.0-openjdk-src-1.8.0.232.b09-1.el6_10.x86_64.rpm 1d5951f315be0786a2f660f4ee2647b2fb4da177798706d71dc99cab906b1ba0 java-1.8.0-openjdk-src-debug-1.8.0.232.b09-1.el6_10.x86_64.rpm Source: fa4e2743b9b227ebfe07febffbf1bef70ea080cb440c064dd19151f81731e4c4 java-1.8.0-openjdk-1.8.0.232.b09-1.el6_10.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 176, Issue 4 ***********************************************

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moving from centos 8 to stream? (and possibly back again?)
by Robert P. J. Day 23 Oct '19

23 Oct '19

just installed stock centos 8 x86_64 and did "dnf update", now reading up on centos stream, and wondering: 1) can i, at any time, decide to convert this system to centos stream, notwithstanding any normal updates i've done in the meantime? 2) if i'm running centos stream and decide it's just too progressive for me, can i dial it back to "regular" centos down the road? rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================

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Centos 8 hardware compatibility testing?
by Frank Cox 23 Oct '19

23 Oct '19

With Centos 7 and earlier I've been using the Live CD image to test new hardware (laptops etc) for compatibility. That way I can get a desktop up and try the sound and the networking and whatnot without affecting what is already installed on the machine, and then if everything looks good I can just run the installer right from the Live CD image. There's no Live CD image for Centos 8, so what would be a good way to accomplish the task of testing new hardware with Centos 8 before attempting to install the operating system? -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

2 1

Stream not installing centos-release-stream
by Rich Greenwood 22 Oct '19

22 Oct '19

It looks like anaconda isn't installing centos-release-stream when you install CentOS 8 Stream. I just did a minimal install through PXE and it pulled everything from the 8-stream repository and installed the stream versions, but didn't install centos-release-stream. (Below is the output of yum list \*release\* immediately after install.) This means that it will not get updates from stream. Is this intentional or is this a bug? --Rich Last metadata expiration check: 0:06:02 ago on Tue 22 Oct 2019 11:02:55 AM PDT. Installed Packages centos-release.x86_64 8.0-0.1905.0.9.el8 @anaconda Available Packages centos-release.i686 8.0-0.1905.0.9.el8 BaseOS centos-release-stream.x86_64 8.0-0.1905.0.9.el8 extras elrepo-release.noarch 8.0-2.el8.elrepo extras epel-release.noarch 8-5.el8 extras -- Rich Greenwood Network Engineer Shasta County Office of Education 530-225-0161

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C8 regression / tmp on tmpfs
by Leon Fauster 22 Oct '19

22 Oct '19

Does someone have a working tmp on tmpfs via systemctl enable tmp.mount under CentOS8/RHEL8? This seems to work straight in EL7 ... # LANG=C systemctl enable tmp.mount The unit files have no installation config (WantedBy, RequiredBy, Also, Alias settings in the [Install] section, and DefaultInstance for template units). This means they are not meant to be enabled using systemctl. Possible reasons for having this kind of units are: 1) A unit may be statically enabled by being symlinked from another unit's .wants/ or .requires/ directory. 2) A unit's purpose may be to act as a helper for some other unit which has a requirement dependency on it. 3) A unit may be started when needed via activation (socket, path, timer, D-Bus, udev, scripted systemctl call, ...). 4) In case of template units, the unit is meant to be enabled with some instance name specified. -- Leon

2 4

Migrating users to new server
by Kenneth Porter 22 Oct '19

22 Oct '19

An age-old problem and there are some simple awk/grep-based scripts to handle the easy cases. Are there any more sophisticated tools that can extract all non-system users and groups and then merge the result into the password/group/shadow/gshadow files of a new server? I don't need home directories or mbox inboxes created because I'll rsync those over once I've created the users. Tricky problems include merging entries for existing users and groups, and renumbering if one is moving from a 500-based system to a 1000-based system. (I did the latter long ago so don't need it this time.) Red Hat's page with some simple commands to handle the easy cases: <https://access.redhat.com/solutions/179753>

1 0

Failure to install boot loader on Dell PowerEdge R720xd
by Kenneth Porter 21 Oct '19

21 Oct '19

What command does the installer use to install the boot loader? I sucessfully installed CentOS 8 to the server, with /usr on a mirrored SSD pair on the RAID controller and /boot on the internal SD card (where Dell wants one to boot from). Before rebooting, I inspected the installation at /mnt/sysimage and the disk usage looked reasonable. I saw a grub directory in /boot but no second stage boot loader nor any config files for it. At the end of the process, I got an error message that the installer failed to install the boot loader and the resulting system wouldn't boot. It didn't. There were no details useful for diagnosis. So now I'm about to boot the installer DVD into rescue mode to manually install the boot loader and see the real error message. So what command do I issue?

2 4

how to reinit an own repo after adding files?
by Ralf Prengel 21 Oct '19

21 Oct '19

Hallo, I try to use my own repo. The problem: The repo is working when using it while installing a fresh system using pxe and kickstart. When changing the content and rebuilding the repo new packages are not found. My question: What is the right way to reinit a repo complete? I tried several hints I found in the web but new packages are never found. Thanks Ralf Von meinem iPad gesendet

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