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dicom-web & main-dicom-tags
author Alain Mazy <am@osimis.io>
date Thu, 05 May 2022 12:27:09 +0200
parents c8afdaeb877a
children bca261dac7bb
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1 .. _log:
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3 Collecting logs
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4 ---------------
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5
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6 Standard logs
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7 =============
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8
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9 Everytime the Orthanc service starts, it will generate
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10 a new log file in ``C:\Program Files\Orthanc Server\Logs`` on Windows
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11 and in ``/var/log/orthanc/`` on Linux.
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12
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13 By default, on Windows, if the Orthanc service fails to start, it will
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14 retry to start 5 times and stop so it does not generate thousands of log files.
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16 Log files are named as ``Orthanc.log.YYYYMMDD-hhmmss.ffff`` including
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17 the date/time when Orthanc was started.
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18
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19 Orthanc is not removing old logs so these log files might accumulate
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20 and consume lot's of space. It's up to you to manage the logs folder
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21 to make sure you don't fill your disk with logs.
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24
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25 Generating an exploitable debug log
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26 ===================================
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27
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28 .. highlight:: bash
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29
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30 By default, the Orthanc logs contain only the ``WARNING`` and
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31 ``ERROR`` information levels. For your logs to be exploitable by the
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32 Orthanc community, you must include more information by adding the
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33 ``--verbose`` or ``--trace`` command-line options, which will add the
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34 ``INFO`` and ``TRACE`` information levels. If you are starting Orthanc
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35 from the command-line, simply add these flags and redirect the
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36 standard outputs to some log file. For instance::
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38 $ ./Orthanc --trace --logfile=orthanc.log
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39
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40 Note that the Orthanc command-line tool has many other options related
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41 to logging. Check out the :ref:`full manpage <manpage>`.
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42
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43 However, if you use packaged versions of Orthanc that starts the
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44 server in background (such as GNU/Linux packages or the Windows
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45 installers by Osimis), you will have to manually start Orthanc. The
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46 sections below explain how to achieve this goal with the officially
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47 supported packages.
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50 Under Windows
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51 ^^^^^^^^^^^^^
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52
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53 Under Windows, if you used the official installer by Osimis:
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55 1. Stop the Orthanc service. The actual process depends on your
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56 version of Windows.
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57
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58 2. Make sure you have a ``C:\Temp`` folder available to store the log file.
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59
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60 3. In a command-line shell, manually start Orthanc to generate the
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61 ``Orthanc.log`` file::
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62
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63 $ "C:\Program Files\Orthanc Server\Orthanc.exe" --verbose "C:\Program Files\Orthanc Server\Configuration" > C:\Temp\Orthanc.log 2<&1
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64
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65 This will start Orthanc with exactly the same configuration as your service,
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66 but in verbose mode.
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68 4. Once the log has been generated (in ``C:\Temp\Orthanc.log``), stop Orthanc
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69 and possibly restart the Orthanc service.
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72 Under Debian GNU/Linux
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73 ^^^^^^^^^^^^^^^^^^^^^^
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75 1. Stop the Orthanc service::
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77 $ sudo /etc/init.d/orthanc stop
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79 2. Manually start Orthanc (using the same configuration as the
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80 service) and generate the log::
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81
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82 $ sudo -u orthanc /usr/sbin/Orthanc --verbose /etc/orthanc/ > Orthanc.log 2>&1
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83
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84 3. Restart the Orthanc service::
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85
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86 $ sudo /etc/init.d/orthanc start
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89 Under Docker
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90 ^^^^^^^^^^^^
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91
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92 The command-line to be used is::
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93
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94 $ sudo docker run -a stderr -p 4242:4242 -p 8042:8042 --rm jodogne/orthanc --verbose /etc/orthanc > Orthanc.log 2>&1
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97 Changing the log level while Orthanc is running
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98 ===============================================
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100 Starting with Orthanc 1.6.0, you can dynamically change the log level
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101 while Orthanc is running using the :ref:`REST API <rest>`::
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102
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103 $ curl -X PUT http://localhost:8042/tools/log-level -d "verbose"
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104 $ curl -X PUT http://localhost:8042/tools/log-level -d "trace"
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105 $ curl -X PUT http://localhost:8042/tools/log-level -d "default"
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107
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108 Log categories
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109 ==============
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110
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111 Starting with Orthanc 1.8.2, log messages are associated with a
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112 **category**. The category indicates the subsystem of Orthanc from
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113 which the message comes (such as the embedded HTTP server, the DICOM
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114 communications, Lua scripts...).
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115
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116 It is possible to choose a different log level for each category. This
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117 can be done when starting Orthanc as follows::
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118
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119 $ ./Orthanc --verbose-http --trace-dicom
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120
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121 This command would start Orthanc in verbose mode for HTTP-related
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122 messages, and would enable debug messages related to DICOM. The full
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123 list of the available log categories (``http``, ``dicom``, ``lua``,
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124 ``plugins``...) can be found in the :ref:`manpage of Orthanc
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125 <manpage>` or by starting Orthanc with the ``--help`` flag.
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126
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127 It is also possible to dynamically change the log level of a category
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128 while Orthanc is running by using the :ref:`REST API <rest>`, for
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129 instance::
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130
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131 $ curl -X PUT http://localhost:8042/tools/log-level-http -d "verbose"
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132 $ curl -X PUT http://localhost:8042/tools/log-level-dicom -d "trace"
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133 $ curl -X PUT http://localhost:8042/tools/log-level-plugins -d "default"
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134
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135 The list of the available log categories is also available through the
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136 REST API, by inspecting the URIs that are prefixed by
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137 ``/tools/log-level``::
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138
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139 $ curl http://localhost:8042/tools/
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140 [...]
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141 "log-level",
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142 "log-level-dicom",
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143 "log-level-generic",
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144 "log-level-http",
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145 "log-level-jobs",
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146 [...]
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147
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148 **Remarks:**
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149
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150 * Messages that are not associated with a well-identified category are
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151 considered as belonging to the ``generic`` category.
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152
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153 * Using the ``--verbose`` or ``-trace`` command-line options, or
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154 changing the value of the ``/tools/log-level`` URI will reset the
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155 log level of **all** the categories. Note that the command-line
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156 options are applied from left to right.
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157