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Accessing KRB5 NFS from local system accounts
by Gordon Messmer 30 Nov '17

30 Nov '17

I recently noticed that spamassassin (running as the local "daemon" account) will hang some of the time when processing messages, and tracked it to the process attempting to access ~user/.spamassassin/user_prefs. I believe that should return an access failure, but sometimes the process stalls instead. In any case, I'd like to allow access, but my understanding is that processes without a Kerberos ticket cannot access an NFS4 filesystem with sec=krb5. Is that correct? If so, how would I allow a local system account to access globally readable files? Should I create a keytab, and set KRB5_KTNAME in the spamassassin environment? Does anyone working with NFS and krb5 have any tips?

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C 7, docker, and storage
by m.roth＠5-cent.us 30 Nov '17

30 Nov '17

I may have missed some overnight replies to my question from yesterday - if so, sorry. >From my googling, it looks like I should change from the loopback device to overlayFS (with overlay2). What I haven't found is, first and foremost, more clarity on configuring storage. It *appears* that the loopback storage is just a directory under /var/lib/docker (yet I see a reference in someone's blog to ~docker - *is* /var/lib/docker intended as ~docker? Can I make a docker directory elsewhere, on another filesystem that has a lot of space, and configure docker to use that, or do I need to symlink from /var/lib/docker to the new place? And should I move all the old stuff under /var/lib/docker to the new location (of course have shut down docker)? mark

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Admins supporting both RHEL and CentOS
by Joseph L. Casale 30 Nov '17

30 Nov '17

With a few exceptions, I see most admins treat CentOS as a single rolling release and rely on the ABI commitment assuming things just work between point releases. On the other hand I see the opposite with RHEL where admins constrain installations to the point release. What is the case with users on this list who support both? Thanks, Joseph L. Casale

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Failed attempts
by Jerry Geis 29 Nov '17

29 Nov '17

hi All, I happened to login to one of my servers today and saw 96000 failed login attempts. shown below is the address its coming from. I added it to my firewall to drop. Failed password for root from 123.183.209.135 port 14299 ssh2 FYI - others might be seeing it also. Jerry

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Missing /usr/share/perl5 in C7
by Mark Haney 29 Nov '17

29 Nov '17

I'm under a bit of a crunch here, so any immediate help would be appreciated. We kickstart our customer boxes and have started migrating to CentOS 7. We're running Radiator 4.6 1 (I know, but bear with me) and we just deployed our first radius box to a customer to be turned up today. (I know, I know. I had no idea it wasn't being tested sooner than this.) I was brought in because the strict.pm perl module was missing and causing compilation errors. It turns out nearly the entire /usr/share/perl5/ directory was pretty much empty. I ended up having to copy that directory over from another C7 server which was intact. yum whatprovides /usr/share/perl5/strict.pm tells me it's the base perl-5.16.x package, which is installed on this box. Any idea what happened? -- Mark Haney Network Engineer at NeoNova 919-460-3330 option 1 mark.haney(a)neonova.net www.neonova.net

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Perl fun part 2
by Mark Haney 29 Nov '17

29 Nov '17

I figured this needed it's own thread, so apologies for spamming the list. Along with the /usr/share/perl5 issues (which I did kinda fix with a manual copy of the directory from another box), we're having an issue with SystemD (go figure) stopping the radiator service, but failing to unbind the ports (1645/1646). It's complaining about 'killproc' not found. Is there a package that's in? Or how do I get this to work with SystemD properly? We can't have this thing jacked up like this. Any ideas? -- Mark Haney Network Engineer at NeoNova 919-460-3330 option 1 mark.haney(a)neonova.net www.neonova.net

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C 7, lockd issue
by m.roth＠5-cent.us 29 Nov '17

29 Nov '17

I thnk I posted this last week, but to refresh your minds (for Americans, after all the turkey): two C7 boxes, updated. box 1 is exporting directories; box 2 is not running nfs. From box 1, every minute, I get <...> kernel: lockd: server fred.local not responding, timed out Now, on box 2, fred is eth0:fred, and is one of five secondaries on eth0. When I do an ip a, it shows as the last one. Further, df shows no directory from box 1 being mounted. So, does anyone have a clue on this? mark

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CentOS-announce Digest, Vol 153, Issue 7
by centos-announce-request＠centos.org 29 Nov '17

29 Nov '17

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 MongoDB 3.4 on CentOS Linux 6 x86_64 (Jan Stan?k) 2. Announcing release of MongoDB 3.4 on CentOS Linux 7 x86_64 (Jan Stan?k) 3. Announcing release of NodeJS 8 on CentOS Linux 7 x86_64 (Jan Stan?k) 4. Announcing release of Python 3.6 on CentOS Linux 7 x86_64 (Jan Stan?k) 5. Announcing release of PHP 7.1 on CentOS Linux 7 x86_64 (Jan Stan?k) 6. Announcing release of Maven 3.5 on CentOS Linux 7 x86_64 (Jan Stan?k) 7. Announcing release of nginx 1.12 on CentOS Linux 7 x86_64 (Jan Stan?k) 8. Announcing release of Developer Toolset 7 on CentOS Linux 6 x86_64 SCL (Jan Stan?k) 9. Announcing release of MariaDB 10.2 on CentOS Linux 7 x86_64 SCL (Jan Stan?k) 10. Announcing release of Developer Toolset 7 on CentOS Linux 7 x86_64 SCL (Jan Stan?k) 11. Announcing release of MariaDB 10.2 on CentOS Linux 6 x86_64 SCL (Jan Stan?k) 12. Announcing release of PostgreSQL 9.6 on CentOS Linux 7 x86_64 (Jan Stan?k) 13. Announcing release of PostgreSQL 9.6 on CentOS Linux 6 x86_64 (Jan Stan?k) 14. CESA-2017:3270 Important CentOS 6 apr Security Update (Johnny Hughes) 15. CESA-2017:3270 Important CentOS 7 apr Security Update (Johnny Hughes) 16. CESA-2017:3269 Important CentOS 7 procmail Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 28 Nov 2017 15:34:31 +0100 From: Jan Stan?k <jstanek(a)redhat.com> To: centos-announce(a)centos.org Subject: [CentOS-announce] Announcing release of MongoDB 3.4 on CentOS Linux 6 x86_64 Message-ID: <a94452c1-7413-77ef-c148-23ed76b6a79f(a)redhat.com> Content-Type: text/plain; charset="utf-8" I am pleased to announce the immediate availability of MongoDB in version 3.4 on CentOS Linux 6 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: $ sudo yum install centos-release-scl $ sudo yum install rh-mongodb34 $ scl enable rh-mongodb34 bash At this point you should be able to use MongoDB just as a normal application. Some examples of usage follows: $ service rh-mongodb34-mongod start $ mongo In order to view the individual components included in this collection, including additional subpackages, you can run: $ sudo yum list rh-mongodb34\* This collections is CentOS-based rebuild built by SCLo SIG community, and the packages have been available in Red Hat Software Collections 3.0 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 howto 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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Migrating From CentOS-6 To CentOS-7
by Eugene Poole 29 Nov '17

29 Nov '17

I've a system that has been running CentOS 6 64-bit for almost 4-years and I want to start the move to CentOS 7 64-bit. I run software RAID-1 with LVM everywhere except /boot which is a standard partition RAID-1. There are 2 areas that concern me greatly about this migration: 1. How do I duplicate my current grub configuration file that supports a failure of /dev/sda to grub2? 2. How do I install CentOS 7 but use my existing hard drive layout so I only format specific OS file systems. My drive layout goes back to the original proposed FHS layout. The separate partitions are: /boot 1GB / 6GB /home 4GB /opt 4GB /tmp 2GB /usr 12GB /usr/local 2GB /var 8GB swap 16GB Plus many other file system dedicated to specific applications and data. When I moved from CentOS 5 to CentOS 6 all of the OS partitions were formatted except /home. All went extremely well then. But I don't see a way to do that with CentOS 7. Is there some detailed installation instructions showing some advanced methods? TIA Gene -- Eugene Poole Woodstock, Georgia

1 0

Chromium on CentOS 6
by H 29 Nov '17

29 Nov '17

I have chromium installed on CentOS 7 and it works fine, I now need to install it on a CentOS 6 workstation. However, it is not available in EPEL as it is for C 7. From what I understand, this is because it is already available in a supplementary channel from RHEL for C 6. Is this the recommended method for installing it on C 6? https://www.tecmint.com/install-google-chrome-on-redhat-centos-fedora-linux/

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