macros

# Conventions

How this wiki works — for humans and agents. This is the contract that keeps
the wiki the source of truth.

## Source of truth

This wiki (`computers.wiki.git`) is the single source of truth for fleet
documentation. Humans read and edit via the web UI. Agents work in a
persistent clone at `~/fastly/computers-wiki`:

macros

{
  config,
  lib,
  pkgs,
  ...
}: let
  cfg = config.kernel.autofdo;

  profileExists =
    cfg.profilePath

macros

# Rebuild the package with nftables support
# Module expects scripts named iptables_ so copy nft versions to those names
nixpkgs.config.packageOverrides = pkgs: {
  miniupnpd = pkgs.miniupnpd.overrideAttrs (o:{
    buildInputs = o.buildInputs ++ [ pkgs.libmnl pkgs.libnftnl pkgs.openssl ];
    makefile = "Makefile.linux_nft";
    configureFlags = [ "--firewall=nftables" ];
    postFixup = ''
      cp $out/etc/miniupnpd/nft_init.sh $out/etc/miniupnpd/iptables_init.sh
      cp $out/etc/miniupnpd/nft_removeall.sh $out/etc/miniupnpd/iptables_removeall.sh

macros

#include <stdio.h>
#include <fcntl.h>
#include <stdint.h>

int main(int argc, char **argv) {
 int32_t l;
 int fd;

 if (argc != 2) {
 fprintf(stderr, "Usage: %s <latency in us>\n", argv[0]);

macros

#!/usr/bin/ruby

require 'socket'

PROCESS_METRICS = {
  'Uptime_sec' => %w(uptime seconds),
  'ConnRate' => %w(connection_rate connections rate),
  'SessRate' => %w(session_rate sessions rate),
  'SslFrontendKeyRate' => %w(sslkey_rate lookups rate),
  'SslCacheLookups' => %w(sslcache_lookups lookups counter),

macros

#!/usr/bin/ruby

require 'openssl'

cert = OpenSSL::X509::Certificate.new File.read(ARGV[0])
cn = cert.subject.to_a.select{|oid, value| oid == "CN"}[0][1]

puts "Cert metadata"
puts cert.serial
puts cert.issuer

macros

!
! Zebra configuration saved from vty
!   2012/03/15 02:25:13
!
hostname bgpd
log file /var/log/quagga/bgpd.log
log stdout
!
router bgp 31377
 bgp router-id 17.16.0.1

macros

   Hi Jason,
   I wanted to reach out to see if you are open to exploring engineering
   opportunities with Google. ?I support Google.com engineering and thought
   your experience with ops engineering and keeping Fastly's systems up and
   running would be a good fit for our team.
   If you're interested, please let me know when you have a few minutes to
   chat. ?Even If you aren't looking for a change at the moment let's still
   connect on LinkedIn so we can follow up at a later date.
   Regards,
   ?

macros

APT
{
        Install-Recommends “false”;
        Install-Suggests "false";
};

Dpkg::Options {
   "--force-confdef";
   "--force-confold";
}

macros

Device:         rrqm/s   wrqm/s     r/s     w/s    rMB/s    wMB/s avgrq-sz avgqu-sz   await  svctm  %util
xvda              0.00     3.60    0.00    3.40     0.00     0.03    16.47     0.90  263.82 117.65  40.00