VirtualTam's bookmarks

21 bookmarks found

  1. fish shell - a smart and user-friendly command line shell for Linux, macOS, and the rest of the family 2024-11-08
    tags: command-line, programming/rust, programming/shell/fish, source-code-management/git
    [ permalink ]

    Reference:

    Configuration:

    Plugins:

  2. Git - git-for-each-ref Documentation 2023-02-25
    tags: command-line, source-code-management/git
    [ permalink ]
  3. macos - Option key does not work as Meta in tmux 2022-05-21
    tags: apple/macos, keyboard, terminal, tmux
    [ permalink ]

    Note: each input source (keyboard, external keyboards) must be configured separately

  4. embiggen-disk: live-resize a filesystem after first live-resizing any necessary layers below it: an optional LVM LV and PV, and an MBR or GPT partition table 2022-03-05
    tags: filesystem/lvm, linux, programming/go, virtualization, virtualization/qemu
    [ permalink ]
  5. Reining in the thundering herd ⛈ Getting to 80% CPU utilization with Django 2021-08-19
    tags: framework/django, gunicorn, network/http, network/http-server/haproxy, network/http-server/nginx, network/reverse-proxy, programming/python, protocol/fastcgi, uwsgi, web, wsgi
    [ permalink ]
  6. What is "AWS Security Scanner" in my server logs? 2020-07-31
    tags: cloud/aws, network, security
    [ permalink ]
  7. Load balancing and scaling Docker containers with Træfik 2018-07-18
    tags: linux/container/docker, network, network/http, network/proxy
    [ permalink ]

    Træfik options:

    Relevant backend labels:

    • traefik.port
    • traefik.docker.network
    • traefik.backend.loadbalancer.method
    • traefik.backend.loadbalancer.stickiness

    Examples:

    Gateway timeout and overlay network setup:

  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
    [ 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!
  9. python - Jinja has a "center" formatting option, but how about "right align"? - Stack Overflow 2017-06-16
    tags: format, jinja, programming/python, string, template
    [ permalink ]
  10. Lenovo Thinkpad 13 + Linux - Feedback 2017-04-15
    tags: fan, hardware, hardware/cpu, heat, laptop, lenovo, linux, noise
    [ permalink ]

    +++: backlit keyboard, battery ++: HDPI matte screen, touchpad+trackpad -: BIOS messages in approximative English --: no ethernet port ---: cooling / fan noise

    ETH available through:

    • 10$ generic USB-C adapter
    • 25$ Lenovo USB-C adapter
    • 150$ Lenovo USB-C dock
    • 180$ Lenovo docking station

    Cooling / fan control:

    • triggered when the CPU reaches approx. 46° / 20% load
    • slowest speed: 3400 RPM (!), goes up to 4000+ RPM

    TODO:

    • try updating BIOS/UEFI
    • use a laptop cooling pad
    • killall -9 firefox # not really an option tho

    User-contributed feedback:

  11. LaTeX / Beamer / Minted 2017-04-11
    tags: code, image/svg, programming/latex, programming/latex/beamer, pygments, text/font
    [ permalink ]

    Code / minted / listings

    Minted formatting

    Columns

    Icons / images

    Overlay / Pause / step-by-step

    Titles

    URL

  12. mypy: Optional static typing for Python 2 and 3 (PEP484) 2017-01-18
    tags: programming/python, static-analysis, type-hint
    [ permalink ]
  13. /r/python - Why optional type hinting in python is not that popular? 2017-01-12
    tags: code, duck, hint, metadata, programming/python, type, variable
    [ permalink ]
  14. Fabrication d'un lombricomposteur vertical | Autonomie alimentaire et énergétique 2017-01-05
    tags: compost, ecology, food, garbage, gerbable, ikea, lombric, natural, waste, worm
    [ permalink ]

    Fonctionnement :

    Trouver des vers :

    À essayer :

    Modèles :

    Composants :

    Options :

    Composter à Toulouse :

  15. PlantUML 2016-11-21
    tags: class, diagram, editor/vim, graphviz, plantuml, software-engineering/uml, text
    [ permalink ]

    Diagrams:

    Options:

  16. ggreer/the_silver_searcher: A code-searching tool similar to ack, but faster. 2016-06-02
    tags: ack, file, grep, index, linux, search, unix
    [ permalink ]

    Super-fast and efficient file searching tool, also quite convenient when it comes to its options ;-)

  17. Guide to pkg-config 2016-03-29
    tags: build, linux, make, option, package, programming/library
    [ permalink ]

    via https://www.freedesktop.org/wiki/Software/pkg-config/

  18. Jenkins Show Advanced | Greasemonkey script 2015-08-18
    tags: advanced, continuous-integration/jenkins, greasemonkey, internet/browser/firefox, option, script
    [ permalink ]

    via https://www.reddit.com/r/jenkinsci/comments/2yfiux/always_show_the_advanced_configuration_in_jenkins/ requires https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/

  19. ALSA: multiple USB sound cards 2015-01-12
    tags: audio, card, device, linux, linux/alsa, sound
    [ permalink ] 
    # /etc/modprobe.d/snd_usb_audio.conf
options snd_usb_audio vid=<vid1>,<vid2> pid=<pid1>,<pid2> index=<index1>,<index2> enable=1,1

    example:

    # 5: M-Audio Fast Track Pro 
# 6: Focusrite Scarlett 6i6
options snd_usb_audio vid=0x763,0x1235 pid=0x2012,0x8012 index=5,6 enable=1,1

    See also: http://alsa.opensrc.org/MultipleCards

  20. Starting and Accessing Jenkins 2015-01-09
    tags: continuous-integration, continuous-integration/jenkins, memory, performance, programming/java, service, virtual
    [ permalink ]

    To increase the memory allocated and available:

    # /etc/default/jenkins
JAVA_ARGS=&quot;-Xms4G -Xmx16G -Djava.awt.headless=true&quot;

    See also