Upgrading a Lino production site¶
This document gives generic instructions for upgrading a Lino production site to a new version. This procedure is suitable for smaller sites with one contact person. See Installing a preview site for are more sophisticated approach on sites with many users. See also Data migrations à la Lino for technical background information.
Go to your project directory:
$ go myproject
goif you don't know that command.
Activate the python environment (we usually have a shell alias
awhich expands to
Stop any services that might want to write to the database (web server, supervisor):
$ sudo service apache2 stop # not needed when the server runs nginx $ sudo service supervisor stop
make_snapshot.shto make a snapshot of your database:
See Making a snapshot of a Lino database for details.
pull.shto update the source code:
installcommand to install any new Python dependencies if needed:
$ python manage.py install
$ python manage.py collectstatic
This step can be skipped if there were no changes in the static files.
That's all if there is no change in the database structure. But if there was (or if you don't know whether there was) some change which requires a data migration, then you must continue:
Restore the snapshot:
$ python manage.py run snapshot/restore.py
Note that a
restore.py can take considerable time depending
on the size of your database. So if you believe but are not
absolutely sure there was no change in the database structure, then
you can check whether you need to run
restore.py by doing a
second temporary snapshot and then comparing their
files. If nothing has changed, then you don't need to run it:
$ python manage.py dump2py -o t $ diff snapshot/restore.py t/restore.py
Start the web server and supervisor:
$ sudo service apache2 start $ sudo service supervisor start
Shell scripts generated by getlino¶
Make a snapshot of the site's database.
Usage: See Making a snapshot of a Lino database.
Update the Python packages used by this virtualenv.
This includes both the packages installed from cloned source code repositories and those installed via PyPI.