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Run Chef recipes on test kitchen

• Installing Chef Client with Test Kitchen

• Node is a test kitchen

• Create kitchen

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Install Chef

• download Chefdk from here: https://downloads.chef.io/chefdk

• install ChefDK

sudo dpkg -i chefdk_1.0.3-1_amd64.deb

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Ubuntu 16.04 network rules for interfaces

/etc/udev/rules.d/70-persistent-net.rules

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:25:90:24:6b:ec", ATTR{dev_id}=="0x0", ATTR{type}=="1", NAME="eth0"
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:25:90:24:6b:ed", ATTR{dev_id}=="0x0", ATTR{type}=="1", NAME="eth1"

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Nginx server configuration for PHP sites

 server {
      listen       80;
      server_name  www.mysite.com;
      return       301 http://mysite.com$request_uri;
  }

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Network for LXC container

Host device as bridge

• persisted in host's /etc/network/interfaces the container's veth virtual ethernet interface can share the network link on the physical interface of the host (eth0). So the container resides on the same ethernet segment and talks to the same dhcp server as the host does.

Additonal bridge device

• setup manually with brctl

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Install LXC

Config LXC

~/.config/lxc/default.conf

lxc.network.type = veth
lxc.network.link = lxcbr0

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PowerDNS

PowerDNS is not designed to provide recursive results. It is intended to act only as an authoritative server for the domains it serves. This implies it will be serving domain data to other hosts.

Install pdns and pdns-recursor

sudo apt-get install pdns-server pdns-recursor

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Add history for Sensu metrics with Kafka

• Sensu stores in Redis only last check results and history of exit codes for that check.

• there is log file in Sensu where history of ALL checks is written. It can be used for extracting data, but it is not intended for user log.

• We will use Sensu handler, which is triggered after every check (metric handler is triggered after every run, but other handler types are triggered after exit code changes value from previous execution!) run and provided with check results.

• It is up to user to decide what to do with results, should he add data to log file, store data to Redis, or something else.

• Our handler will store data in Kafka

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Writing better code in Chef recipes

Libraries are Ruby files placed in /libraries directory for the cookbook: .../cookbooks/mycookbook/libraries/

Helpers

Custom Resources

• https://docs.chef.io/custom_resources.html

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We want to create an instance on Amazon and provision (setup) oit using Chef provisioning. We will use gem chef-provisioning-fog to work with Amazon EC2.

Install

• Install ChefDK read install ChefDK