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72 lines
3.2 KiB
ReStructuredText
72 lines
3.2 KiB
ReStructuredText
WeeChat on-boot in a tmux session
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:author: Russell Ballestrini
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:slug: weechat-on-boot-in-a-tmux-session
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:date: 2020-09-15 13:32
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:tags: Automation, Salt
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:status: published
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Chronicles of a washed up systems administrator.
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In the basement, M. Bison (``mbision.foxhop.net.``), a T430 with a cracked screen runs quietly with his lid closed, acting as a SmartOS hypervisor to 3 Solaris derived zones and 4 KVM ubuntu guests.
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One of these guests is the oldest of the bunch and his name is Akuma (``akuma.foxhop.net.``).
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Akuma and I go way back, over 13 years now. At one point Akuma was a physical machine, who ran FreeBSD and then later Ubuntu 6.04 with it's own guest kernel virtual machines.
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Akuma has been "home base" for as long as I remember. A place where shit got done. A place to perform operations. A place to "jump" from with SSH.
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It makes sense that Akuma would evolve and gain many roles over the years.
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Akuma performs DNS caching and forwarding for my LAN, it acts as the internal authoritative Nameserver for ``foxhop.net.``, and is the Salt Master for all my hosts both internally (hosted at my house) and externally in the "cloud".
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Akuma uses ``tmux`` with default settings to allow for a "remote shell" vibe.
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This allows me attach to my session running on Akuma from anywhere in the world.
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Only problem is, Akuma reboots weekly when M. Bison `triggers a complete backup of all guests </backup-all-virtual-machines-on-a-smartos-hypervisor-with-smart-back-sh/>`_. Backups are stored on Guile, the FreeNAS server, uncompressed since disk space is cheap and this process allows for downtime, however I try to limit it.
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Since Akuma reboots each week, I needed a way to create tmux sessions on boot if I wanted to continue to use it as my "home base", and I did so using SaltStack:
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.. code-block:: yaml
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create-tmux-session-on-boot:
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cron.present:
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- comment: "create a new tmux session on system boot"
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- name: /bin/bash /home/fox/new-tmux
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- identifier: "create-tmux-session-on-boot"
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- special: "@reboot"
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- user: fox
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- require:
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- user: fox
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This salt state results in the following ``crontab -l`` entry:
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.. code-block:: bash
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# create a new tmux session on system boot SALT_CRON_IDENTIFIER:create-tmux-session-on-boot
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@reboot /bin/bash /home/fox/new-tmux
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And of course I what tutorial wouldn't be complete without a script! (``/home/fox/new-tmux``) :
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.. code-block:: bash
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#!/bin/bash
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# The -A flag makes new-session behave like attach-session if session-name
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# already exists; in this case, -D behaves like -d to attach-session.
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tmux new-session -d -A -s "remote-shell" "weechat-curses"
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# also create a couple windows to use as "remote shells".
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tmux new-window
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tmux new-window
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# finally attach to the new session!
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tmux a -t "remote-shell"
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Thanks for joining me on this escape into the world of computers.
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This website is hosted on Ryu (``ryu.foxhop.net``) another Ubuntu guest running on M. Bison, humming away downstairs on that T430 with a cracked screen, but thats a story for another time.
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Please feel free to comment below if you have suggestions for this post.
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.. contents::
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