Store backups

• Local disk
• Remote storage - copy by scp
• Remote storage - sync using Rsync

• Installing Chef Client with Test Kitchen

• Node is a test kitchen

• Create kitchen

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

• install ChefDK

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

/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"

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

• 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.

• setup manually with brctl

~/.config/lxc/default.conf

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

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.

sudo apt-get install pdns-server pdns-recursor

• 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

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

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