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rpmbuild --define | some rpm sorcerer around?
by lejeczek 15 Jun '18

15 Jun '18

hi how do you pass vars to rpmbuild for definition? eg rpmbuild --define \'"${_definition2}"\' I've been fiddling with ways to escape, but none is fricking working.. I mean, rpmbuild rushes to work(no errors nor failure) so if you try just the command line do not believe it, because later as it executes %if you will see process does not see these definitions. many thanks, L

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Custom ISO With Post Installation Scripts
by Earl Ramirez 15 Jun '18

15 Jun '18

Dear All I have been working on a custom ISO with kickstart and a couple of post installation scripts and would like to have the script run before the login prompt. The custom ISO works; however, the scripts fails because some of the services, e.g. mariadb does not start before the server installation has been completed and rebooted; therefore, I have been putting the scripts in /etc/profile.d/ and after logging in the scripts will execute and upon completion of the script will be deleted from /etc/profile.d/. DuckDuckGo suggested that I copy the script to /etc/rc.d/rc.local and make it executable; however, I have tried that a few times and the script simply does not execute. Below is an excerpt from the ks.cfg. export SRCDIR="/run/install/repo" export DSTDIR="/mnt/sysimage" # copy scripts to the destintion of the server cp -v $SRCDIR/postinstall/script1.sh $DSTDIR/etc/rc.d/rc.local/script1.sh # Make scripts executable chmod +x $DSTDIR/etc/rc.d/rc.local.sh Since this is a ISO for a community project, don't think that tools such as Ansible, Chef, Puppet, etc. will work here. Also, it is a one time execution; therefore, I did not consider using systemd because the goal would be to have visibility while the script is running just as I see after I login; however, just need the script to be executed after the OS was installed and restarted and before the login prompt. All suggestions are welcome. Thanks in advance. -- Earl Ramirez <earlaramirez(a)gmail.com>

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Difficulty configuring RDMA in CentOS
by Pat Haley 13 Jun '18

13 Jun '18

Hi We are trying to configure RDMA for an infiniband connection between our data server (running CentOS 6.8) and our compute nodes (running CentOS 6.6). We have been trying to follow the instructions in https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/ht… however we are getting conflicting information on whether the RDMA is correctly configured. Some of what we have done and some of the data are below. Can you suggest what other tests and what other data we should get to debug this problem? /etc/rdma/mlx4.conf to set the port types properly for RoCE/IBoE usage. Edit /etc/modprobe.d/mlx4.conf to instruct the driver on which packet priority is configured for the “no-drop” service on the Ethernet switches the cards are plugged into. vim /etc/rdma/mlx4.conf You can find the right pci device to use for any given card by loading # the mlx4_core module, then going to /sys/bus/pci/drivers/mlx4_core and # seeing what possible PCI devices are listed there.The possible values # for ports are: ib, eth, and auto.However, not all cards support all # types, so if you get messages from the kernel that your selected port # type isn't supported, there's nothing this script can do about it. [root@mseas-data2 mlx4_core]# ls /sys/bus/pci/drivers/mlx4_core 0000:81:00.0bindmodulenew_idremove_idueventunbind mstconfig -d 81:00.0 query Device #1: ---------- Device type:ConnectX3Pro PCI device:81:00.0 Configurations:Current SRIOV_EN1 NUM_OF_VFS8 LINK_TYPE_P13 LINK_TYPE_P23 LOG_BAR_SIZE3 BOOT_PKEY_P10 BOOT_PKEY_P20 BOOT_OPTION_ROM_EN_P11 BOOT_VLAN_EN_P10 BOOT_RETRY_CNT_P10 LEGACY_BOOT_PROTOCOL_P11 BOOT_VLAN_P11 BOOT_OPTION_ROM_EN_P21 BOOT_VLAN_EN_P20 BOOT_RETRY_CNT_P20 LEGACY_BOOT_PROTOCOL_P21 BOOT_VLAN_P21 Needed packages: Most if not all packages appear to be installed on server [root@mseas-data2 ~]# service rdma status Low level hardware support loaded: mlx4_ib Upper layer protocol modules: ib_ipoib User space access modules: rdma_ucm ib_ucm ib_uverbs ib_umad Connection management modules: rdma_cm ib_cm iw_cm Configured IPoIB interfaces: none Currently active IPoIB interfaces: ib0

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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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