sixth slap: Backing up chef-server-v11

1) Backup Data bags, roles, and nodes

Use this Knife Exec script to perform a backup of an existing Chef Server:

cd ~/path/to/chef/repository   

curl -O https://raw.github.com/jtimberman/knife-scripts/master/chef_server_backup.rb

Run the knife exec script

knife exec chef_server_backup.rb

IMPROVEMENT: Instead of directly running from chef admin workstation, let there be another client :backup, and use it to do backup .

# Create new client on chef-server with given key and role

knife client create backup --admin --file "$HOME/.chef/backup.pem"

It will create new client named "backup" with admin privileges using backup.pem key. ( Generally we create this user for taking chef-server backup)

This will export your data bags, roles, and nodes stored on the chef server as JSON files within the .chef/chef_server_backup directory.

The following three areas should be backed up to ensure the chef server can be restored.

2) Chef Server Configuration Files

If the default configuration files are modified they must be backed up. For instance, the nginx configuration file could be modified to listen on a specific ip address. These files are in the /var/opt/chef-server directory. Also, backup user configuration from /etc/chef-server along with security keys(pem files)

3) Bookshelf Data

Data stored by Bookshelf must be protected. This data resides in the /var/opt/chef-server/bookshelf/data directory.

4) PostgreSQL Database

Many options are available to backup the PostgreSQL databases.

Find pg_dump on chef-server

find / -name pg_dump -type f 2>/dev/null

output: /opt/chef-server/embedded/bin/pg_dump etc etc

/opt/chef-server/embedded/bin/pg_dump    -h localhost  -p 5432 -U opscode_chef  > /tmp/chefserver.sql

Default values of chef-server-v11 components are here: http://docs.opscode.com/config_rb_chef_server_optional_settings.html

https://github.com/opscode/omnibus-chef-server/blob/master/files/chef-server-cookbooks/chef-server/attributes/default.rb

If hostname, port and database are different then change them here.

Find at which port postgresql is running:

sudo netstat -lp | grep postgresql

You may use chef-server-ctl show-config command to see your defined configuration.

sixth slap

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Thursday 13 February 2014

Backing up chef-server-v11