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File GNUHealth.README.SUSE of Package gnuhealth (Revision c71f4acb95750b789cdbad5d225e9a6a)

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GNUHealth for openSUSE
======================

How to get it running (Without reading the instructions)
========================================================

You have already installed the package gnuhealth and found this documentation. Good.

1) Log in as root and start the database
> su
> systemctl start postgresql

2) Change postgres parameters. You need to log in as user postgres, in order to avoid authorisation issues. Assuming we have nano as editor:
<you are logged in as user 'root'>

> su postgres
> nano /var/lib/pgsql/data/pg_hba.conf

FOR LOCAL CONNECTIONS (Database on the same machine) change the line
    local   all             all                                     md5
to
    local   all             all                                     trust

Save your input. This will make sure that Tryton/GNUHealth server can connect to the database

3) Create a role for 'tryton' in the database (sill as user postgres)
> psql -c "CREATE USER tryton WITH CREATEDB;"

4) exit as user postgres and restart postgres
> exit
> systemctl restart postgresql

5) start gnuhealth/trytond:
> systemctl start gnuhealth

6) Install the tryton client:
> zypper in tryton

7) Open the tryton client:
> tryton
go to 'manage profiles' -> add -> name it 'localhost' -> Host: localhost
-> you should now see a selection of available databases

Note: From Tryton Release 4.2 onwards it is not possible anymore to create databases 
from the Frontend. You need to do this manually (see /usr/share/doc/packages/trytond/tryton-server.README.SUSE)

DONE.

Upgrade
-------

* openSUSE supports online upgrade (zypper dup) between releases. In case you
    are updating your installation from openSUSE Leap 42.2 to 42.3, the following message will appear:
    
    Problem: gnuhealth-3.2.0-12.1.noarch requires python3-PyWebDAV3-GNUHealth, but this requirement cannot be provided
    uninstallable providers: python3-PyWebDAV3-GNUHealth-0.10.1-1.1.noarch[repo-oss]
    Solution 1: keep obsolete gnuhealth-3.0.8-11.6.1.noarch
    Solution 2: deinstallation of python-PyWebDAV-0.9.8-1.1.noarch
    Solution 3: break gnuhealth-3.2.0-12.1.noarch by ignoring some of its dependencies

This message is somewhat misleading, as the new python3-PyWebDAV3-GNUHealth conflicts with python-PyWebDAV. 
    Go for Solution 2

* In case you upgrade from a previous GNU Health make sure you apply the 
    upgrade procedures described in /usr/share/doc/packages/gnuhealth/upgrade.

As user tryton, run tryton-admin:

> /usr/bin/trytond-admin -c /etc/tryton/trytond.conf --all -d mydb
    
  * GNU_Health 3.0 on openSUSE delivered 2 modules, which are not (yet) in 3.2
    anymore: pdq and hl7. You need to delete them first

Delete the 2 modules:
    > psql mydb
    delete from ir_module where name='pdq';
    delete from ir_module where name='hl7';
    
    Quit with CRTL-D
    Apply the database patch:
    
    > psql mydb < /usr/share/doc/packages/gnuhealth/upgrade/3.2/upgrade_32.sql
    
    Remember to replace mydb with the name of your database.

GNUHealth for openSUSE (a bit more in detail)
=============================================

GNUHealth is a free Health and Hospital Information system build on top of Tryton, an OpenSource ERP framework.

This is the openSUSE package for GNUHealth. Starting with openSUSE Leap 42.2, it is shipped with the standard distribution. It was build to simplify the installation and maintenance of a system, to make it useable for 'end-users' as well.

To achieve this goal, the openSUSE package handles some things different than the GNUHealth standard:

1) No installation from source code
GNUHealth has an installation script (gnuhealth_install.sh) that installs the Software from the source code.
It has shown that this can cause a lot of trouble with dependencies (other software packages that are required to run GNUHealth and the Tryton Server), as they may be named slightly different in your Linux-distribution, or are just not listed.

To avoid hassle for each and every end user, openSUSE uses the Open Build Service [1] to create a package where all dependencies are resolved for you.

As a consequence, you install the package 'gnuhealth' with the openSUSE package manager, and the system does the rest for you. See [2] for installation advise.

In GNU Health installation from source, the program gnuhealth_control is used to perform updates, maintenance etc. The openSUSE packages come with a modified gnuhealth_control to distinguish between activities performed by system tools (zypper) and those that safely can be handled by gnuhealth_control. Try it, its save!

2) GNUHealth depends on Tryton
Tryton [3] is the technical backend for GNUHealth. Tryton can run as ERP-System on its own. For the reasons explained under 1) , Tryton is build as well as package for openSUSE, following the same philosophy. See [4]for details.

See as well: /usr/share/doc/packages/trytond/tryton-server.README.SUSE to set up your local installation.

3) GNUHealth is build on top of Tryton
Unlike the standard GNUHealth setup, openSUSE treats GNUHealth as add-on (additional modules) to a Tryton standard installation. The implications are:

- The Tryton Server (basis for GNUHealth) runs under the user 'tryton', not under the user 'gnuhealth'
- you can use the openSUSE standard tools to start and stop the server [4]
- you can use the openSUSE package manager (zypper or YaST) to install upgrades. 
- all Tryton and GNUHealth modules are installed in the python directory /usr/lib/python/site-packages/trytond

Nevertheless, you can use gnuhealth-control to create database backups, install languages and updates. Make sure the version of gnuhealth-control ends on -openSUSE. gnuhealth-control should run as root, if in doubt.

In case you want to install additional Tryton modules, you need to include the Tryton repository:
zypper ar -f http://download.opensuse.org/repositories/Application:/ERP:/Tryton:/4.2/openSUSE_Leap_42.3 tryton

You may use the GNUHealth mailing list (health@gnu.org) for remarks or questions.

gnuhealth-webdav@.service
=========================

Starting with GNU Health 3.2, GNU Health comes with its own WebDAV-Server that can be used for shared calendars. In order to enable the WebDAV server, it comes with a systemd-service. As input parameter for the service the database-name on which to operate must be passed. Say your database is called mydb, invoke the service with

> systemctl enable gnuhealth-webdav@mydb.service

You can start multiple webdav services for different databases in parallel.

Digital Signatures
==================

In order to make use of GNUHealth's capabilities to digitally sign documents, you need to create a PGP-key for the user logged in to the operating system.

From the start menu, start the program Kgpg and follow the instructions, it will guide you through the process of key generation. Choose the maximal key length (4096).
Use a passphrase with Capital letters, small letters, numbers and special characters (like %$§ etc) and have at least 12 digits for the passphrase - the more, the better.
Keep the passphrase in a secure location, and take a backup of the PGP keys (located in ~/gnupg - in the live CD this is /home/gnuhealth/.gnupg ).

Have fun and keep the neighborhood well and fit!

[1] https://build.opensuse.org
[2] http://en.wikibooks.org/wiki/GNU_Health/Operating_System-Specific_Notes#OpenSUSE
[3] http://www.tryton.org
[4] https://github.com/mbehrle/tryton/blob/wiki/InstallationonopenSUSE.md

-- Axel Braun <axel.braun@gmx.de>  THU Sep 14 19:14:04 UTC 2017

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