I am writing a chef script to automate setting dev environments. I can get a database created and grant privileges but I am trying to find out a way to import a mysql dump file
If it's a file path error, and you're using chef solo, try using the path specified within solo.rb, like:
/tmp/chef-solo/site-cookbooks/path_to_file.sql
As a general note, consider using the database cookbook for mysql user and database management tasks. Once you setup the necessary cookbook dependencies, you can put code like this into your main recipe's default.rb:
# externalize conection info in a ruby hash
mysql_connection_info = {
:host => "localhost",
:username => 'root',
:password => node['mysql']['server_root_password']
}
# drop if exists, then create a mysql database named DB_NAME
mysql_database 'DB_NAME' do
connection mysql_connection_info
action [:drop, :create]
end
# query a database from a sql script on disk
mysql_database "DB_NAME" do
connection mysql_connection_info
sql { ::File.open("/tmp/chef-solo/site-cookbooks/main/path/to/sql_script.sql").read }
action :query
end
#or import from a dump file
mysql_database "DB_NAME" do
connection mysql_connection_info
sql "source /tmp/chef-solo/site-cookbooks/main/path/to/sql_dump.sql;"
end
Haven't tested that last one because storing a database file within the chef directory really slows things down.
See also: Import SQL file into mysql
You can create a backup from the MySQL command line client, but not from within a SQL query. You need to execute the command from the shell. I believe the execute
resource might do the trick for you:
http://wiki.opscode.com/display/chef/Resources#Resources-Execute
I'm not really a Ruby guy, but I managed to get Chef to import a large .sql
file by leveraging the mysql
command line tool. Challenges I needed to solve:
.sql
file in the 100's of MB range (YMMV if you need GBs or TBs).sql
file has changedFirst I created a .my.cnf
file template to pass the credentials:
[client]
host=<%= @host %>
user=<%= @user %>
password="<%= @password %>"
Then I added a resource to my recipe that would populate the template:
template '/root/.my.cnf' do
mode 0600
variables({
:host => 'localhost',
:user => 'root',
:password => node[:your_cookbook][:db][:root_password],
})
end
(Where node[:your_cookbook][:db][:root_password]
is an attribute that contains the MySQL root password)
Security Note: for simplicity I'm doing the import as the root
user. If the .sql
file to be imported is not from a trusted source, you will want to run mysql
as a limited user and connect to MySQL with a limited db user that only has access to the database in question.
Finally, I added another resource to the recipe that actually executes the import:
backup_sql = '/path/to/the/db-backup.sql'
db_last_modified = "/etc/db-#{node[:your_cookbook][:db][:name]}.lastmodified"
execute 'restore backup' do
command "mysql #{node[:your_cookbook][:db][:name]} <'#{backup_sql}' && touch '#{db_last_modified}'"
not_if { FileUtils.uptodate?(db_last_modified, [backup_sql]) }
end
(Where node[:your_cookbook][:db][:name]
is the name of the MySQL database that will be restored.)