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Commandes de Docker

Commandes de bases

run

La commande run permet d'instancier un container à partir d'une image. Executer une instruction dans un container :

docker run ubuntu:14.04 echo "hello world"

Affiche : hello world

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---
# This has been tested with ansible 1.3 with these commands:
#   ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts isFirstRun=false"
#   ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts isFirstRun=true"
#   ansible-playbook -i hosts ansible_conditionals_examples.yaml --extra-vars="hosts=myhosts"
# NB: The type of the variable is crucial!

- name: Ansible Conditionals Examples
  hosts: $hosts
  vars_files:

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# {{ ansible_managed }}

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

{% if ansible_interfaces|length > 2 %}

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# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

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# This is just a cheat sheet:

# On production
sudo -u postgres pg_dump database | gzip -9 > database.sql.gz

# On local
scp -C production:~/database.sql.gz
dropdb database && createdb database
gunzip < database.sql.gz | psql database

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#
# Working with branches
#

# Get the current branch name (not so useful in itself, but used in
# other aliases)
branch-name = "!git rev-parse --abbrev-ref HEAD"
# Push the current branch to the remote "origin", and set it to track
# the upstream branch
publish = "!git push -u origin $(git branch-name)"

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[alias]
	co = checkout
	cob = checkout -b
	coo = !git fetch && git checkout
	br = branch
	brd = branch -d
	brD = branch -D
	merged = branch --merged
	dmerged = "git branch --merged | grep -v '\\*' | xargs -n 1 git branch -d"
	st = status

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Regular expression cheat sheet for Varnish

Varnish regular expressions are NOT case sensitive. Varnish uses POSIX
regular expressions, for a complete guide, see: "man 7 regex"

Basic matching:
	req.url ~ "searchterm"
	True if req.url contains "searchterm" anywhere.

	req.url == "searchterm"

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In GCP Console, create VPC networks named vpn-1 and vpn-2 in us-east1 and europe-west1

In Cloud Shell:

Create VPN gateways

gcloud compute target-vpn-gateways \
create vpn-1 \

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# filter by request host header
varnishlog -q 'ReqHeader ~ "Host: example.com"'

# filter by request url
varnishlog -q 'ReqURL ~ "^/some/path/"'

# filter by client ip (behind reverse proxy)
varnishlog -q 'ReqHeader ~ "X-Real-IP: .*123.123.123.123"'

# filter by request host header and show request url and referrer header