VirtualTam's bookmarks
14 bookmarks found
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BBS - The Documentary
2024-11-10 The BBS Documentary Video Collection is a varied set of video items collected by Jason Scott, curator of TEXTFILES.COM. These are recordings about and from the era of the domination of ASCII and Dial-up Bulletin Board Systems (roughly the 1970s through the 1990s, with examples far before and after that).
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79 AD Mount Vesuvius erupts. In Herculaneum, twenty meters of hot mud and ash bury an enormous villa once owned by the father-in-law of Julius Caesar. Inside, there is a vast library of papyrus scrolls. The scrolls are carbonized by the heat of the volcanic debris. But they are also preserved. For centuries, as virtually every ancient text exposed to the air decays and disappears, the library of the Villa of the Papyri waits underground, intact.
- Vesuvius Challenge 2023
- educelab/volume-cartographer - Volumetric processing toolkit and C++ libraries for the recovery and restoration of damaged cultural materials
- KhartesViewer/khartes - Explore, and then segment, the data volumes created by high-resolution X-ray tomography of the Herculaneum scrolls
- The Getty Villa
- Herculaneum Papyri
- Students Decipher 2,000-Year-Old Herculaneum Scrolls
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Mutagen Extension for Docker Desktop
2023-01-07 Create synchronized caches of macOS and Windows filesystem contents in ext4 volumes inside the Docker Desktop VM
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- https://grafana.com/docs/tempo/latest/getting-started/
- https://grafana.com/docs/tempo/latest/configuration/
- https://github.com/grafana/tempo
- https://grafana.com/blog/2020/10/27/announcing-grafana-tempo-a-massively-scalable-distributed-tracing-system/
- https://grafana.com/blog/2020/11/09/trace-discovery-in-grafana-tempo-using-prometheus-exemplars-loki-2.0-queries-and-more/
- https://grafana.com/go/observabilitycon/observability-with-logs-grafana/
- https://grafana.com/go/observabilitycon/tracing-made-simple-with-grafana/
- https://gouthamve.dev/tempo-a-game-of-trade-offs/
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Open questions, potential solutions or workarounds:
- Loki does not support out-of-order message ingestion
- There is not Java client for Loki
- The Wiced MQTT queue might be limited depending on the volume of logs
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The Maintainers
2019-04-16 The Maintainers is a global, interdisciplinary research network that takes a different approach, one whose conceptual starting point was a playful proposal for a counter-volume to Isaacson’s that could be titled The Maintainers: How a Group of Bureaucrats, Standards Engineers, and Introverts Made Technologies That Kind of Work Most of the Time. Network members come from a variety of fields, including academic historians and social scientists, as well as artists, activists, engineers, and business leaders. All share an interest in the concepts of maintenance, infrastructure, repair, and the myriad forms of labor and expertise that sustain our human-built world.
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Kubernetes plugin and examples:
Kubernetes pipeline plugin:
- https://github.com/jenkinsci/kubernetes-pipeline-plugin
- https://jenkins.io/doc/pipeline/steps/kubernetes-pipeline-steps/
Relevant issues:
- https://issues.jenkins-ci.org/browse/JENKINS-48135 - Multiple containers in declarative pipelines
- https://issues.jenkins-ci.org/browse/JENKINS-51353 - Request for volumes in declarative pipelines
Persisting volumes:
- https://kubernetes.io/docs/concepts/storage/persistent-volumes/
- https://cloud.google.com/kubernetes-engine/docs/concepts/persistent-volumes
- https://devopscube.com/persistent-volume-google-kubernetes-engine/
- http://www.monkeylittle.com/blog/2017/02/08/adding-persistent-volumes-to-jenkins-with-kubernetes-volumes.html
- https://stackoverflow.com/questions/48068973/volume-mounting-in-jenkins-on-kubernetes
Declarative pipelines with YAML spec:
- https://github.com/jenkinsci/kubernetes-plugin/blob/master/examples/declarative-multiple-containers.groovy
- https://stackoverflow.com/questions/47470498/how-to-define-multiple-containers-in-declarative-pipeline
Scripted pipelines:
XML (!):
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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
$ chrootto 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/fstabwith the output of$ lsblkand$ 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!
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Dracut emergency shell
2018-04-20 - https://superuser.com/questions/1244536/dracut-emerg-shell-mount-lvm2-volume
- https://unix.stackexchange.com/questions/207593/how-to-make-lvms-at-available-boot-kernel-panic-dracut-cannot-find-logical-vo
- https://serverfault.com/questions/893721/centos7-dracut-lvm-command-not-found
- https://www.novell.com/coolsolutions/appnote/19386.html
- https://fedoraproject.org/wiki/How_to_debug_Dracut_problems
- https://kb.vmware.com/s/article/1002402
- https://forums.fedoraforum.org/showthread.php?294909-Need-dracut-emergency-shell-help-regenerate
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PowerShell Survival Kit
2018-03-07 Home:
- https://docs.microsoft.com/en-us/powershell/
- https://docs.microsoft.com/en-us/powershell/scripting/getting-started/fundamental/using-windows-powershell-for-administration?view=powershell-6
Wikiversity:
- https://en.wikiversity.org/wiki/PowerShell
- https://en.wikiversity.org/wiki/PowerShell/Variables
- https://en.wikiversity.org/wiki/PowerShell/Arrays_and_Hash_Tables
- https://en.wikiversity.org/wiki/PowerShell/Loops
Basics:
- https://stackoverflow.com/questions/1825585/determine-installed-powershell-version
- https://stackoverflow.com/questions/8343767/how-to-get-the-current-directory-of-the-cmdlet-being-executed
- https://superuser.com/questions/237902/how-can-one-show-the-current-directory-in-powershell
- https://stackoverflow.com/questions/6138849/how-do-you-move-files-folders-across-volumes-with-powershell
Commands and executables:
HTTP:
ZIP archives:
- https://serverfault.com/questions/18872/how-to-zip-unzip-files-in-powershell
- https://stackoverflow.com/questions/27768303/how-to-unzip-a-file-in-powershell
- https://www.reddit.com/r/PowerShell/comments/454e4y/how_do_i_unzip_a_zip_file_with_powershell/
- https://github.com/auberginehill/unzip-silently
- To extract silently: https://github.com/auberginehill/unzip-silently/blob/master/Unzip-Silently.ps1#L352
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Docker and database persistence
2017-09-04 - https://myopsblog.wordpress.com/2017/02/06/why-databases-is-not-for-containers/
- https://stackoverflow.com/questions/18496940/how-to-deal-with-persistent-storage-e-g-databases-in-docker
- https://stackoverflow.com/questions/30109561/how-persistent-are-docker-data-only-containers
- https://kubernetes.io/docs/concepts/storage/persistent-volumes/
- http://rancher.com/introducing-convoy-a-docker-volume-driver-for-backup-and-recovery-of-persistent-data/
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