Mercurial > hg > orthanc-book
annotate Sphinx/source/users/replication.rst @ 46:12b204ee328d
remark about replication
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 07 Oct 2016 08:07:24 +0200 |
parents | 901e8961f46e |
children | 16d516fdc642 |
rev | line source |
---|---|
0 | 1 .. highlight:: bash |
2 .. _replication: | |
3 | |
4 Replication and upgrade | |
5 ======================= | |
6 | |
7 This page explains how to replicate the content of one instance of | |
8 Orthanc to another instance of Orthanc. This is useful to **upgrade** | |
9 between :ref:`versions of the database schema <db-versioning>`, or to | |
10 create **mirrored DICOM servers**. | |
11 | |
12 Note that if you only want to automatically upgrade the database for | |
13 successive versions of Orthanc, you most probably only have to add the | |
14 ``--upgrade`` command-line option while starting Orthanc. | |
15 | |
16 | |
17 Direct access to the filesystem | |
18 ------------------------------- | |
19 | |
20 The most direct way to replicate consists in using the | |
21 `ImportDicomFiles | |
22 <https://bitbucket.org/sjodogne/orthanc/src/default/Resources/Samples/ImportDicomFiles/ImportDicomFiles.py>`_ | |
23 script of the Orthanc distribution. For instance, the following | |
24 command would recursively explore the content of the ``OrthancStorage`` | |
25 folder (where Orthanc stores its DICOM files by default), and send | |
26 each DICOM file inside this folder to the instance of Orthanc whose | |
27 REST API is listening on ``http://192.168.0.2:8042``:: | |
28 | |
29 $ python ImportDicomFiles.py 192.168.0.2 8042 OrthancStorage | |
30 | |
31 This method will only succeed if: | |
32 | |
33 * The source Orthanc uses the default SQLite back-end of Orthanc (and | |
34 not the `PostgreSQL plugin | |
35 <http://www.orthanc-server.com/static.php?page=postgresql>`_, for | |
36 instance), | |
37 * You have command-line access to the source Orthanc, and | |
38 * The transparent :ref:`compression` of the DICOM instances is | |
39 disabled (cf. option ``StorageCompression`` in the | |
40 :ref:`configuration file <configuration>`). | |
41 | |
46
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
42 **Important remark:** Because of :ref:`the way Orthanc stores its |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
43 database <orthanc-storage>` on the filesystem, it is *entirely normal* |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
44 that the ``ImportDicomFiles.py`` script ends by saying that only half |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
45 of the DICOM files were properly sent. This is because the JSON |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
46 summaries are not DICOM files, and are thus rejected by the target |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
47 Orthanc server. More information are available `on the discussion |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
48 group |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
49 <https://groups.google.com/d/msg/orthanc-users/Zlhtcpo76qQ/tp8EqaRCAQAJ>`__. |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
50 |
12b204ee328d
remark about replication
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
diff
changeset
|
51 |
0 | 52 Generic replication |
53 ------------------- | |
54 | |
55 If you cannot use the first method, you can use the `Replicate | |
56 <https://bitbucket.org/sjodogne/orthanc/src/default/Resources/Samples/Python/Replicate.py>`_ | |
57 script of the Orthanc distribution. This script will use the REST API | |
58 of both the source and target instances of Orthanc. For instance:: | |
59 | |
60 $ python Replicate.py http://orthanc:password@localhost:8042/ http://192.168.0.2/ | |
61 | |
62 Obviously, contrarily to the first method, the source instance of | |
63 Orthanc must be up and running during the replication. |