jamesbjackson

Retrieve hosted zones with aws route53 list-hosted-zones then enter the zone Id below:

TSV

aws route53 list-resource-record-sets --hosted-zone-id "/hostedzone/xxxxxxxxxxx" | jq -r '.ResourceRecordSets[] | [.Name, .Type, (.ResourceRecords[]? | .Value), .AliasTarget.DNSName?]  | @tsv'

CSV

jamesbjackson

// Ensure we have a default reading
lastreading <- { "pm10":0, "pm25":0, "pm100":0 };

// Code to convert particlate density to AQI index
// based on https://gist.github.com/kfury/822bbba2cb0f946abb73baa156722ab1
function Linear(AQIhigh, AQIlow, Conchigh, Conclow, Conc) {
    local a=((Conc-Conclow)/(Conchigh-Conclow))*(AQIhigh-AQIlow)+AQIlow;
    return math.floor(a+0.5);
}

jamesbjackson

LInux

Three system configuration parameters must be set to support a large number of open files and TCP connections with large bursts of messages. Changes can be made using the /etc/rc.d/rc.local or /etc/sysctl.conf script to preserve changes after reboot.

1. /proc/sys/fs/file-max: The maximum number of concurrently open files.

fs.file-max = 1000000

2. /proc/sys/net/ipv4/tcp_max_syn_backlog: Maximum number of remembered connection requests, which are still did not receive an acknowledgment from connecting client. The default value is 1024 for systems with more than 128Mb of memory, and 128 for low memory machines.

net.ipv4.tcp_max_syn_backlog = 3240000

3. /proc/sys/net/core/somaxconn: Limit of socket listen() backlog, known in userspace as SOMAXCONN. Defaults to 128.

net.core.somaxconn = 3240000

jamesbjackson

• Maximum Open Files

You requested maxclients of 10000 requiring at least 10032 max file descriptors.
Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'.

jamesbjackson

-- Requires the `redis-cell` module to be installed in Redis: https://github.com/brandur/redis-cell
local redis = require "nginx.redis"

local red = redis:new()
red:set_timeout(1000)

local ok, err = red:connect("127.0.0.1", 6379)
if not ok then
    ngx.log(ngx.ERR, "failed to connect to redis: ", err)
    ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)

jamesbjackson

#!/usr/bin/env elixir
# Convert an Elixir config.exs to an erlang sys.config
# 
# Usage:  elixir_to_sys_config config.exs > sys.config
#   First argument is the Elixir config.exs file
#   Writes to stdout
#   You probably want to set MIX_ENV accordingly
#
# 2015 by Dan Swain, dan.t.swain@gmail.com

jamesbjackson

#
# Tasks to keep your repository in sync with your Chef Server
#
# Author:: Matthew Kent (<mkent@magoazul.com>)
# Copyright:: Copyright (c) 2010 Matthew Kent
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

jamesbjackson

# Put *unversioned* requirements in `requirements-to-freeze.txt` as described below.
# `requirements.txt` will be automatically generated from `pip freeze`
# https://www.kennethreitz.org/essays/a-better-pip-workflow

venv/bin/activate: requirements-to-freeze.txt
	rm -rf venv/
	test -f venv/bin/activate || virtualenv -p $(shell which python3) venv
	. venv/bin/activate ;\
	pip install -Ur requirements-to-freeze.txt ;\
	pip freeze | sort > requirements.txt

jamesbjackson

default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'

jamesbjackson

FROM netdata/netdata:latest

MAINTAINER YOUR_EMAIL

# add netdata user to root group (access volumne mounts from host)
RUN apk --no-cache add shadow
RUN usermod -a -G root netdata

ENTRYPOINT ["/usr/sbin/run.sh"]