VirtualTam's bookmarks

1. Podman | Daemonless container engine for developing, managing, and running OCI Containers 2021-08-21

   tags: linux, linux/container/docker, linux/container/podman, linux/red-hat

   [ permalink ]

   • https://github.com/containers/podman
   • https://podman.io/talks/2018/10/01/talk-replace-docker-with-podman.html
   • https://developers.redhat.com/blog/2019/04/24/how-to-run-systemd-in-a-container
   • https://developers.redhat.com/blog/2014/05/05/running-systemd-within-docker-container
2. Two Quarkus Books for Christmas 2021-01-05

   tags: book, framework/quarkus, programming/java, red-hat

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   • https://developers.redhat.com/books/understanding-quarkus
   • https://developers.redhat.com/books/practising-quarkus
3. Federation with Keycloak and FreeIPA - Red Hat Customer Portal 2019-07-22

   tags: network/ldap, red-hat, security/authentication, security/authorization, single-sign-on, user

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4. Quarkus - Supersonic Subatomic Java 2019-03-15

   tags: jvm, performance, programming/java, red-hat, web

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   • https://github.com/quarkusio/quarkus
   • https://www.graalvm.org/
   • https://github.com/graalvm
   • https://developers.redhat.com/blog/2019/03/07/quarkus-next-generation-kubernetes-native-java-framework/
5. 7.5. Configuring System Memory Capacity - Red Hat Customer Portal 2018-11-15

   tags: linux, linux/kernel, linux/red-hat, memory, performance

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6. PipeWire - audio and video graph processing engine 2018-10-03

   tags: audio, desktop/gnome, desktop/kde, fosdem, jack, linux, linux/fedora, linux/red-hat, pulseaudio, video

   [ permalink ]

   • https://github.com/PipeWire
   • https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Configuration
   • https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/JACK
   • https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/PulseAudio
   • https://wiki.gentoo.org/wiki/Pipewire
   • https://wiki.archlinux.org/index.php/PipeWire
   • https://bootlin.com/blog/an-introduction-to-pipewire/

   FOSDEM:

   • https://archive.fosdem.org/2019/schedule/event/pipewire/
   • https://archive.fosdem.org/2020/schedule/event/ema_pipewire/

   Fedora adoption:

   • https://fedoraproject.org/wiki/Releases/34/ChangeSet#Route_all_Audio_to_PipeWire
   • https://fedoraproject.org/wiki/Changes/DefaultPipeWire

   Articles:

   • https://blogs.gnome.org/uraeus/2018/09/24/getting-the-team-together-to-revolutionize-linux-audio/
   • https://www.collabora.com/news-and-blog/blog/2020/03/05/pipewire-the-media-service-transforming-the-linux-multimedia-landscape/
   • https://www.reddit.com/r/linux/comments/9k89bm/getting_the_team_together_to_revolutionize_linux/

   Troubleshooting:

   • pipewire#2354 Frequent audio popping/crackling/skipping
   • https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Troubleshooting
7. Keycloak - Open Source Identity and Access Management 2018-07-23

   tags: red-hat, security, security/authentication, security/authorization, single-sign-on, user

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   • https://github.com/keycloak
   • https://github.com/keycloak/keycloak
   • https://developers.redhat.com/blog/2018/03/19/sso-made-easy-keycloak-rhsso/
   • https://github.com/keycloak/keycloak-quickstarts
   • https://github.com/ibuetler/docker-keycloak-traefik-workshop
8. Centos/RHEL 7 - Fix LVM boot issues after migration from ESXi to VirtualBox 2018-04-20

   tags: boot, bootloader/grub, filesystem, filesystem/lvm, fstab, linux, linux/centos, linux/kernel, linux/red-hat

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   Here are the steps I used to migrate a CentOS 7 VM from (presumably?) an ESXi server, to a local VirtualBox environment.

   The LVM volumes were not detected at boot, and after the boot timeout, the OS fell back to the Dracut emergency shell.

   • get a CentOS minimal installation CD
   • check the VM's resources and peripherals:
     • ensure there are no floppy drives (!)
     • setup CPU and RAM resources
     • check virtual drives
     • add an SCSI optical drive if needed
   • optional: convert the virtual drive images from VMDK to VDI
   • mount the CentOS installation disc
   • boot on the installation disc:
     • select "Troubleshooting", then "Rescue"
     • let the rescue utility detect filesystems and mountpoints
   • $ chroot to the detected environment
   • backup files:
     • /etc/fstab
     • /boot/grub/grub.cfg
   • under /boot, backup the initrd and initramfs for the current configuration (these will be overwritten)
   • compare the current /etc/fstab with the output of $ lsblk and $ blkid
   • if needed, manually edit /etc/fstab to use the appropriate block device UUIDs, identifiers and mountpoints
   • regenerate GRUB configuration:
     • $ grub2-mkconfig -o /boot/grub2/grub.cfg
   • if needed, reinstall GRUB:
     • $ grub-install /dev/sda
   • rebuild initrd:
     • $ mkinitrd --force /boot/<initrd_image> <kernel_version>
   • rebuild initramfs:
     • $ dracut --force <kernel_version>
   • exit the chroot
   • unmount the installation disc
   • reboot
   • optional but highly recommended: cross your fingers
   • ...
   • profit!
9. ansible-lockdown: Ansible playbook roles for security 2018-04-05

   tags: configuration-management/ansible, linux, linux/red-hat, security

   [ permalink ]

   • https://iase.disa.mil/stigs/os/unix-linux/Pages/index.aspx
   • https://www.cisecurity.org/cis-benchmarks/
10. PatternFly | open interface project 2018-03-27

    tags: framework, linux/red-hat, programming/css, user-experience, web

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    • http://blog.patternfly.org/
11. Command Line Heroes 2018-01-31

    tags: command-line, linux, linux/red-hat, podcast

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12. Pairwise Testing 2018-01-29

    tags: linux, linux/red-hat, microsoft, operating-system, programming/testing

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    • http://atodorov.org/blog/2017/04/14/testing-red-hat-enterprise-linux-the-microsoft-way/
    • https://fosdem.org/2018/schedule/event/pairwise_testing/
13. Ansible AWX & Ansible Tower Documentation 2017-09-26

    tags: configuration-management/ansible, linux, linux/red-hat, tower, user-interface, web

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    • https://github.com/ansible/awx

    • https://www.ansible.com/awx-project-faq

    • https://www.ansible.com/blog/2013/08/05/supercharge-ansible-with-ansibleworks-awx-1-2

    • https://www.redhat.com/en/about/press-releases/red-hat-advances-enterprise-and-network-automation-new-ansible-offerings

    • https://www.ansible.com/blog/5-things-you-can-do-with-awx

    • https://jpmens.net/2017/10/20/a-few-notes-on-ansible-awx/

    • https://jpmens.net/2017/10/23/trigger-awx-job-runs-on-scm-commit/

    • https://www.jeffgeerling.com/blog/2017/ansible-open-sources-ansible-tower-awx

    • https://www.jeffgeerling.com/blog/2017/get-started-using-ansible-awx-open-source-tower-version-one-minute

    • https://github.com/geerlingguy/awx-container

    • https://www.reddit.com/r/ansible/comments/6ymmny/awx_ansible_towers_upstream_open_source_project/

14. Red Hat Directory Server - Chapter 14. Managing Replication 2017-09-20

    tags: 389-ds, linux, linux/centos, linux/red-hat, network/ldap, network/transport-layer-security, replication, security/authentication

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    • http://directory.fedoraproject.org/docs/389ds/howto/howto-replicationmonitoring.html
    • http://directory.fedoraproject.org/docs/389ds/howto/howto-walkthroughmultimasterssl.html
    • http://www.port389.org/docs/389ds/FAQ/faq.html#how-does-the-389-multi-master-replication-work
15. How To Set Up Centralized Linux Authentication with FreeIPA on CentOS 7 | DigitalOcean 2017-09-20

    tags: 389-ds, cryptography/certificate, linux, linux/centos, linux/red-hat, network/dns, network/ldap, security/authentication, single-sign-on

    [ permalink ]

    • https://www.freeipa.org/page/HowTos
16. Home - CHAOSS 2017-09-12

    tags: contribution, data, framework/django, linux/red-hat, observability/metrics, open-source, statistics

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    • https://www.redhat.com/en/blog/red-hat-open-sources-prospector-part-project-chaoss
    • https://opensource.com/article/17/9/prospector-chaoss
    • https://github.com/chaoss/prospector
17. CentOS 7.0 - man page for update-ca-trust (centos section 8) - Unix & Linux Commands 2017-06-30

    tags: cryptography/certificate, linux, linux/centos, linux/red-hat, network/transport-layer-security

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18. Guide to the Secure Configuration of Debian 8 | OpenSCAP Security Guide 2017-06-16

    tags: configuration-management/ansible, linux, linux/debian, linux/red-hat, openscap, scap, security

    [ permalink ]

    • https://wiki.debian.org/SCAPGuide
    • https://wiki.debian.org/UsingSCAP
    • https://packages.debian.org/source/jessie/openscap
    • https://clasohm.com/wp/2016/08/16/linux-security-hardening-with-openscap-and-ansible/
    • https://github.com/OpenSCAP/scap-security-guide
19. Guidance for Docker Image Authors —Project Atomic 2017-05-30

    tags: guidelines, linux, linux/container, linux/container/docker, linux/red-hat

    [ permalink ]

    via https://developers.redhat.com/blog/2016/02/24/10-things-to-avoid-in-docker-containers/

20. Spacewalk: Free & Open Source Linux Systems Management 2017-04-25

    tags: linux, linux/red-hat, management, operating-system

    [ permalink ]

    • https://github.com/spacewalkproject/spacewalk
    • https://www.redhat.com/en/technologies/management/satellite