erlup

Upgrade tools for Erlang/OTP. Contains rebar3 plugin and escript.

Overview

It is a tool to support the upgrade and downgrade of OTP application.

1. Automatic generation of the appup files. See also.
2. Automatic generation of the relup file. See also.
3. Create a rel file in the tar file for the upgrade / downgrade. See also
4. Display the release vsn. See also.

Some of the library already exists, but they has many defects. For example, supporting downgrade and create the more safety appup. If you want to know in detail, please refer to the documentation of each command.

Usage

Using rebar3

%% rebar.config
{plugins, [erlup]}.

$ git checkout v0.0.1
$ rebar3 release        # make a previous version package

$ git checkout v0.0.2
$ rebar3 release        # make a current version package

$ rebar3 erlup appup    # generate the appup files (v0.0.1 -> v0.0.2)
$ rebar3 erlup relup    # generate the relup file  (v0.0.1 -> v0.0.2)

Using escript

$ git clone https://github.com/soranoba/erlup
$ cd erlup
$ make escriptize

$ ls /usr/local/myapp/releases         # previous versions
0.0.1 0.0.2 RELEASES  start_erl.data
$ ls /tmp/myapp/releases               # a new version
0.0.3 RELEASES start_erl.data

$ erlup appup -p 0.0.1 -c 0.0.2 -d /tmp/myapp -d /usr/local/myapp
$ erlup relup -c 0.0.2 -d /tmp/myapp -d /usr/local/myapp

More information

Documents

Configure file

If you use the rebar3.

%% rebar.config
{erlup,
 [
  {appup, [{extra, {[], []}}]},
  {relup, []}
 ]}.

If you use the escript.

%% erlup.config
{appup, [{extra, {[], []}}]}.
{relup, []}.

The escript can read in the form of a rebar3.config.

Contribute

Pull request is welcome =D

License

MIT License