Rafael Calleja rafaelcalleja

Upgrade systemd on Ubuntu 18.04

In this document, I will explain how to upgrade the default systemd version from 237 to 242.

Install required dependencies

# Install required dependencies
sudo apt install build-essential devscripts python3-pip cmake libssl-dev libpcre2-dev
sudo apt purge meson -yq

using Ansible command line:

ansible-playbook --connection=local 127.0.0.1 playbook.yml

using inventory:

127.0.0.1 ansible_connection=local

Adjusting child processes for PHP-FPM (Nginx)

When setting these options consider the following:

How long is your average request?
What is the maximum number of simultaneous visitors the site(s) get?
How much memory on average does each child process consume?

Determine if the max_children limit has been reached.

sudo grep max_children /var/log/php?.?-fpm.log.1 /var/log/php?.?-fpm.log

end time 2020.1.25

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	MAKE := make --no-print-directory

	DESCRIBE := $(shell git describe --match "v*" --always --tags)
	DESCRIBE_PARTS := $(subst -, ,$(DESCRIBE))

	VERSION_TAG := $(word 1,$(DESCRIBE_PARTS))
	COMMITS_SINCE_TAG := $(word 2,$(DESCRIBE_PARTS))

	VERSION := $(subst v,,$(VERSION_TAG))
	VERSION_PARTS := $(subst ., ,$(VERSION))



	Movement:

	j, k down, up
	h, l left, right (in some contexts)
	space page down
	pg up/down page up/down
	arrows up, down, left, right

	# File: etc/default/docker

	# Use DOCKER_OPTS to modify the daemon startup options.
	#DOCKER_OPTS=""
	DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4 -H tcp://127.0.0.1:2375 -H unix:///var/run/docker.sock"

	gcloud compute instance-groups unmanaged create taiwan \
	--zone asia-east1-a

	gcloud compute instance-groups unmanaged add-instances taiwan \
	--instances $(kubectl get nodes \
	--context taiwan \
	--output=jsonpath='{range .items[*]}{.metadata.name},{end}') \
	--zone asia-east1-a

	gcloud compute instance-groups set-named-ports taiwan \

	########################################
	# BASH DEPENDENCY CHECKER
	#
	########################################

	# create an array of packages depended on
	declare -a DEPENDENCIES=(
	'pwd' 'curl' 'missing-package'
	)

	Install WireGuard via whatever package manager you use. For me, I use apt.

	$ sudo add-apt-repository ppa:wireguard/wireguard
	$ sudo apt-get update
	$ sudo apt-get install wireguard

	MacOS
	$ brew install wireguard-tools

	Generate key your key pairs. The key pairs are just that, key pairs. They can be