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chef/moser

moser

erchef couch migration tool

This tool migrates data from the couchdb data schema used by various versions of chef to the sql schema used by chef.

This is named in honor of Leo Moser who first formulated the moving sofa problem. [http://en.wikipedia.org/wiki/Moving_sofa_problem] Hopefully moving this couch will be easier.

Usage

Build in dev-vm with

sudo make relclean rel

Verify that you are using the right database and service in rel/moser/etc/app.confing

  • Specifically, pgsql service, port and password,
  • db_name should be opscode_chef_test for early testing

Run in console with

sudo rel/moser/bin/moser console

First things first, load the opscode_account database into DETS tables:

moser_acct_processor:process_account_file().

The next step is to process the organization database into an ETS table:

f(Db), Db = moser_chef_processor:process_organization("ponyville").

Will return an org_info record for that :

{org_info,<<"ponyville">>,
          "3f0cbfe0b0c0474d9ac86a8fd51d6a30",
          "/srv/piab/mounts/moser/chef_3f0cbfe0b0c0474d9ac86a8fd51d6a30.couch",
          65569,69666,
          {user_to_authz,orgname_to_guid,authz_to_user,account_db},
          {1358,878871,354636}}

To do the db insert:

moser_chef_converter:insert(Db).

Test sweep

f(CL), f(CLS), f(CO), f(CO2), f(T), f(R), f(X).
CL = moser_converter:get_chef_list(), length(CL).
CO = moser_converter:file_list_to_orginfo(CL), length(CO).
CO2 = moser_converter:filter_out_precreated_orgs(CO), length(CO2).
{T, R} = timer:tc(fun() -> moser_converter:process_insert_orgs(CO2) end).

All orgs should complete with an "ok", but some orgs may have failed objects. Review the logs for error messages.

Full sweep migration

%% should only have to do this once?
%% moser_acct_processor:process_account_file().
CL = moser_converter:get_chef_list(), length(CL).
CO = moser_converter:file_list_to_orginfo(CL), length(CO).
CO2 = moser_converter:filter_out_precreated_orgs(CO), length(CO2).
{T, R} = timer:tc(fun() -> moser_converter:process_insert_orgs(CO2) end).
> X = lists:zip(R,CO2)
> IsFail = fun({{ok, _},_}) -> false; (_) -> true end.
> Fails = [ PP || PP <- Out, IsFail(PP)].
> file:write_file("/home/mark/failures",io_lib:fwrite("~p.\n",[Fails])).
sudo su postgres
dropdb opscode_chef_test
createdb -O opscode_chef opscode_chef_test
psql -h localhost -U opscode_chef opscode_chef_test < /home/seth/opscode_chef_schema.sql

Contributing

For information on contributing to this project see https://github.com/chef/chef/blob/master/CONTRIBUTING.md

License

  • Author:: Mark Anderson mark@chef.io
  • Copyright:: Copyright (c) 2012-2016 Chef Software, Inc.
  • License:: Apache License, Version 2.0
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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Chef Server CouchDB Migration Utility: a dependency of chef/chef-server

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