VirtualTam's bookmarks

1. Fixing a Bug in PyPy's Incremental GC 2024-03-28

   tags: debugging/gdb, linux/kernel, memory/garbage-collection, programming/python

   [ permalink ]
2. Debian Package Repository - Instructions to connect to a third-party repository (with Ansible) 2024-01-06

   tags: configuration-management/ansible, cryptography/pgp, cryptography/pgp/gnupg, linux/debian, linux/ubuntu, packaging

   [ permalink ]

   • apt_key deprecated in Debian/Ubuntu - how to fix in Ansible
   • ansible.builtin.deb822_repository - Add and remove deb822 formatted repositories
   • ansible/ansible#78063 - ansible.builtin.apt_key adds keys to a deprecated location
   • Example usages of the new deb822_repository Ansible module
   • Ubuntu [Spec] APT deb822 sources by default
3. Fixing stutters in Papers Please on Linux 2022-08-28

   tags: audio, linux, linux/kernel/ebpf, observability/tracing, performance, programming/c

   [ permalink ]
4. Recapping and restoring a Harman Kardon 330C 2022-06-05

   tags: audio, diy, electronics, noise

   [ permalink ]

   • Harman Kardon 330C Stereo Receiver Repair and Service - BG020
   • Harman Kardon HK 330c - Fixing Noisy Transistor Issue
   • https://drive.google.com/drive/folders/1BnK_k1osh5Qrh0_jvQ-hdS4oiHbICk57
   • https://audiokarma.org/forums/index.php?threads/harman-kardon-330c-repair-random-buzzing.530928/
5. Fixing a MongoDB Replication Protocol Bug with TLA+ - William Schultz 2022-05-31

   tags: database/mongodb, distributed, distributed-system/cluster, formal-specification/tla+, protocol

   [ permalink ]

   • https://www.youtube.com/watch?v=x9zSynTfLDE
6. What is "AWS Security Scanner" in my server logs? 2020-07-31

   tags: cloud/aws, network, security

   [ permalink ]

   • https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html
   • https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html
   • https://docs.aws.amazon.com/cli/latest/reference/ec2/modify-instance-metadata-options.html
   • https://aws.amazon.com/blogs/security/defense-in-depth-open-firewalls-reverse-proxies-ssrf-vulnerabilities-ec2-instance-metadata-service/
   • https://aws.amazon.com/blogs/aws/new-host-based-routing-support-for-aws-application-load-balancers/
   • https://aws.amazon.com/about-aws/whats-new/2018/07/elastic-load-balancing-announces-support-for-redirects-and-fixed-responses-for-application-load-balancer/
   • https://www.reddit.com/r/aws/comments/e18e5n/botexploit_what_is_this_trying_to_do_and_how
   • https://www.reddit.com/r/aws/comments/e18e5n/botexploit_what_is_this_trying_to_do_and_how/f8qympp/
   • https://forums.aws.amazon.com/thread.jspa?threadID=316889
   • https://owasp.org/www-community/attacks/Server_Side_Request_Forgery
   • https://www.wired.com/story/capital-one-paige-thompson-case-hacking-spree/
   • https://krebsonsecurity.com/2019/08/what-we-can-learn-from-the-capital-one-hack/
   • https://krebsonsecurity.com/2019/07/capital-one-data-theft-impacts-106m-people/
   • http://www.thecloudavenue.com/2019/08/how-capital-one-hack-was-achieved-in-aws.html
   • http://www.thecloudavenue.com/2019/11/changes-to-aws-ec2-instance-metadata-service.html
7. Docker & UFW 2019-10-24

   tags: linux/container/docker, linux/iptables, network, security, ufw

   [ permalink ]

   • https://github.com/moby/moby#4737
   • https://github.com/docker/for-linux/issues/690
   • https://stackoverflow.com/questions/30383845/what-is-the-best-practice-of-docker-ufw-under-ubuntu
   • https://www.mkubaczyk.com/2017/09/05/force-docker-not-bypass-ufw-rules-ubuntu-16-04/
   • https://www.techrepublic.com/article/how-to-fix-the-docker-and-ufw-security-flaw/
   • https://www.linux.com/news/how-fix-docker-and-ufw-security-flaw/
   • https://svenv.nl/unixandlinux/dockerufw/
   • https://blog.viktorpetersson.com/2014/11/03/the-dangers-of-ufw-docker.html
   • https://news.ycombinator.com/item?id=27613217
8. console - Fix terminal after displaying a binary file - Unix & Linux Stack Exchange 2018-08-01

   tags: command-line, linux, programming/shell

   [ permalink ]
9. Logitech M705 left mouse button doesn't stay down when pressed - Super User 2018-05-16

   tags: click, diy, electronics, hardware, logitech, mouse

   [ permalink ]

   • http://zalbee.intricus.net/2014/02/how-i-fixed-my-logitech-g500-mouse/
10. 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

    [ permalink ]

    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!
11. scrum - Can fixed scope + fixed deadline + fixed price contract ever be made to work with "agile"? - Software Engineering Stack Exchange 2018-03-07

    tags: agile, agile/scrum, engineering, management, progect, waterfall

    [ permalink ]

    • https://softwareengineering.stackexchange.com/questions/367203/is-scrum-incompatible-with-public-tenders
    • https://en.wikipedia.org/wiki/Project_management_triangle
    • https://en.wikipedia.org/wiki/Hofstadter%27s_law
12. Windows - Locate & fix the MBR 2018-01-05

    tags: boot, microsoft/windows, partition, storage

    [ permalink ]

    • https://superuser.com/questions/510485/how-to-tell-which-physical-disks-have-bootable-mbr
    • https://neosmart.net/wiki/fix-mbr/
    • https://neosmart.net/wiki/reboot-and-select-proper-boot-device/
    • https://askubuntu.com/questions/859685/how-to-delete-the-bootable-flag-of-a-partition
    • https://superuser.com/questions/596919/how-to-set-boot-disk-flag-with-diskpart
13. Don't drown in your open source project! | Jeff Geerling 2017-06-16

    tags: open, open-source, project, source

    [ permalink ]

    • https://www.jeffgeerling.com/blog/2017/follow-questions-dont-drown-your-open-source-project
    • http://www.michaelbromley.co.uk/blog/529/why-i-havent-fixed-your-issue-yet
    • https://nolanlawson.com/2017/03/05/what-it-feels-like-to-be-an-open-source-maintainer/
    • http://blog.ffwll.ch/2017/01/maintainers-dont-scale.html
14. Fixing nginx client body temp permission denied errors · wincent.com 2017-06-02

    tags: file, linux, linux/container/docker, network/http-server/nginx, permission, user

    [ permalink ]

    • https://github.com/dockerfile/nginx/issues/4
    • https://nginx.org/en/docs/http/ngx_http_core_module.html#client_body_temp_path
15. Mistakes I Made Writing a Django App (and How I Fixed Them) 2017-02-15

    tags: framework/django, lintly, programming/python, web

    [ permalink ]

    https://medium.com/@gmcconnaughey/launching-lintly-one-month-in-959078221048#.nkh1vnn8n

16. xkcd: Fixing Problems 2016-10-04

    tags: comics, development, fix, xkcd

    [ permalink ]
17. Fix conflicts only once with git rerere 2015-06-11

    tags: conflict, diff, merge, rebase, source-code-management/git

    [ permalink ]

    Original article: http://www.git-attitude.fr/2014/11/04/git-rerere/ Official doc: http://git-scm.com/docs/git-rerere

18. Microtonal Guitar (Fixed Fret) - Tolgahan Çoğulu 2015-05-31

    tags: classical, instrument/guitar, maqam, microtonal

    [ permalink ]
19. Roystan Ross - Blogging about the problems of game development so others can fix them for me 2015-05-02

    tags: development, engine/unity, game, graphics/3d, indie, learning

    [ permalink ]
20. JIRA ticket or GTFO 2015-04-04

    tags: bug, development, issue, jira, mustache, tracker

    [ permalink ]

    http://assets.diylol.com/hfs/201/c6c/de5/resized/bad-advice-cat-meme-generator-submit-a-jira-i-will-fix-it-4002c7.jpg