dominicsayers

What I actually did

/etc/security/limits.conf

elasticsearch hard memlock 100000

/etc/default/elasticsearch

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$ git config --global --list
user.name=Dominic Sayers
user.email=dominic@sayers.cc
user.signingkey=C7750E92
commit.gpgsign=true
core.editor=code --wait
rebase.autosquash=true
pull.rebase=true
tag.gpgsign=true

dominicsayers

Instance setup

1. Make sure the security group is allowing through any ports you need for SMTP & IMAP. Also open port 10000 for Webmin.
2. You'll want to give it an Elastic IP address so it doesn't wander aimlessly round the IPv4 address space.

Webmin setup

1. sudo apt-get install ntp ntpdate dkms htop - optional: these are just my favourite things
2. sudo pico /etc/apt/sources.list and add at the end:

dominicsayers

Installing docker on a Raspberry Pi running Ubuntu

Basic docker

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo \
  "deb [arch=arm64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

dominicsayers

Installing Webmin on Ubuntu 22.04

The canonical instructions here are pretty good but there's a glaring error. Actually it's not glaring, it took me many hours of frustration to spot it. But you're not interested in my emotional issues, you're here for the solution. Here it is:

The instructions tell you to create a webmin.list file containing this:

deb [signed-by=/usr/share/keyrings/jcameron-key.gpg] https://download.webmin.com/download/repository sarge contrib

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First install Virtualbox

1. sudo pico /etc/apt/sources.list.d/virtualbox.list
2. Add deb http://download.virtualbox.org/virtualbox/debian saucy contrib non-free
3. wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -
4. sudo apt-get update
5. sudo apt-get install dkms unzip
6. sudo apt-get install virtualbox-4.3 --no-install-recommends
7. wget http://download.virtualbox.org/virtualbox/4.3.6/Oracle_VM_VirtualBox_Extension_Pack-4.3.6.vbox-extpack
8. sudo VBoxManage extpack install Oracle_VM_VirtualBox_Extension_Pack-4.3.6.vbox-extpack

dominicsayers

TigerGraph Docker cheatsheet

Information

docker ps -a | grep tiger

List all containers with tiger in their name or image name.

docker logs -f tiger-local-development

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Gem::Specification.new do |spec|
  spec.name    = "oc-events-jobs"
  spec.version = ""
  spec.summary = ""
  spec.authors = ""
  spec.files   = []
end

dominicsayers

1. sudo apt-get install python-setuptools
2. wget http://downloads.sourceforge.net/project/s3tools/s3cmd/1.5.0-alpha1/s3cmd-1.5.0-alpha1.tar.gz
3. tar xvfz s3cmd-1.5.0-alpha1.tar.gz
4. cd s3cmd-1.5.0-alpha1
5. python setup.py install
6. s3cmd --configure

dominicsayers

$ git bisect start
$ git bisect bad
$ git bisect good dd9b00ad73d71a84e11523c062048daaa8e590e9
Bisecting: 14 revisions left to test after this (roughly 4 steps)
[e6ac8fb2b6c9ee04d0600690f477e785f6c02330] Delegate create_graph_node to the graph client
$ git bisect run rspec ./spec/integration/company_branch_spec.rb:49

...