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author Alain Mazy <am@orthanc.team>
date Wed, 23 Oct 2024 16:52:30 +0200
parents f049d19e3109
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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 <https://www.orthanc-server.com/download-windows.php>`__),
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46 you will have to manually start Orthanc. The sections below explain
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47 how to achieve this goal with the officially supported packages.
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49
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50 With Orthanc Explorer 2 installed
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51 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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52
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53 If you have the :ref:`Orthanc Explorer 2 plugin <orthanc-explorer-2>`
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54 enabled, open the settings pane at `http://localhost:8042/ui/app/#/settings
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55 <http://localhost:8042/ui/app/#/settings>`__ and change the verbose level
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56 from there without restarting Orthanc:
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59 .. image:: ../images/OE2-settings-logs.png
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60 :align: center
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61 :width: 800px
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64
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65 Under Windows
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66 ^^^^^^^^^^^^^
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69 If you used the `official Windows installers
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70 <https://www.orthanc-server.com/download-windows.php>`__:
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71
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72 1. Stop the Orthanc service. The actual process depends on your
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73 version of Windows.
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74
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75 2. Make sure you have a ``C:\Temp`` folder available to store the log file.
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77 3. In a command-line shell, manually start Orthanc to generate the
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78 ``Orthanc.log`` file::
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80 $ "C:\Program Files\Orthanc Server\Orthanc.exe" --verbose "C:\Program Files\Orthanc Server\Configuration" > C:\Temp\Orthanc.log 2<&1
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82 This will start Orthanc with exactly the same configuration as your service,
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83 but in verbose mode.
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84
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85 4. Once the log has been generated (in ``C:\Temp\Orthanc.log``), stop Orthanc
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86 and possibly restart the Orthanc service.
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88
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89 By default, the Orthanc service will always start in the default ``Warning`` log level.
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90 If you want to make it start in ``Verbose`` mode at every start, you should set this Registry
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91 Key to 1::
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92
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93 Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Orthanc\Orthanc Server\Verbose
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96
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97 Under Debian GNU/Linux
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98 ^^^^^^^^^^^^^^^^^^^^^^
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99
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100 1. Stop the Orthanc service::
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101
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102 $ sudo /etc/init.d/orthanc stop
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103
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104 2. Manually start Orthanc (using the same configuration as the
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105 service) and generate the log::
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106
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107 $ sudo -u orthanc /usr/sbin/Orthanc --verbose /etc/orthanc/ > Orthanc.log 2>&1
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108
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109 3. Restart the Orthanc service::
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110
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111 $ sudo /etc/init.d/orthanc start
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114 Under Docker
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115 ^^^^^^^^^^^^
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116
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117 With ``orthancteam/orthanc`` images, simply define the ``VERBOSE_ENABLED`` environment
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118 variable to ``true`` when starting your container and then, run this command to
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119 retrieve the logs in a file::
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120
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121 $ sudo docker logs your_container_name &> /tmp/orthanc.log
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122
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123
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124 With ``jodogne/orthanc`` images, use this command line::
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125
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126 $ 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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127
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129 Changing the log level while Orthanc is running
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130 ===============================================
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131
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132 Starting with Orthanc 1.6.0, you can dynamically change the log level
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133 while Orthanc is running using the :ref:`REST API <rest>`::
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134
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135 $ curl -X PUT http://localhost:8042/tools/log-level -d "verbose"
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136 $ curl -X PUT http://localhost:8042/tools/log-level -d "trace"
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137 $ curl -X PUT http://localhost:8042/tools/log-level -d "default"
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140 Log categories
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141 ==============
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142
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143 Starting with Orthanc 1.8.2, log messages are associated with a
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144 **category**. The category indicates the subsystem of Orthanc from
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145 which the message comes (such as the embedded HTTP server, the DICOM
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146 communications, Lua scripts...).
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147
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148 It is possible to choose a different log level for each category. This
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149 can be done when starting Orthanc as follows::
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150
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151 $ ./Orthanc --verbose-http --trace-dicom
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152
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153 This command would start Orthanc in verbose mode for HTTP-related
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154 messages, and would enable debug messages related to DICOM. The full
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155 list of the available log categories (``http``, ``dicom``, ``lua``,
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156 ``plugins``...) can be found in the :ref:`manpage of Orthanc
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157 <manpage>` or by starting Orthanc with the ``--help`` flag.
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158
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159 It is also possible to dynamically change the log level of a category
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160 while Orthanc is running by using the :ref:`REST API <rest>`, for
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161 instance::
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162
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163 $ curl -X PUT http://localhost:8042/tools/log-level-http -d "verbose"
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164 $ curl -X PUT http://localhost:8042/tools/log-level-dicom -d "trace"
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165 $ curl -X PUT http://localhost:8042/tools/log-level-plugins -d "default"
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166
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167 The list of the available log categories is also available through the
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168 REST API, by inspecting the URIs that are prefixed by
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169 ``/tools/log-level``::
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170
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171 $ curl http://localhost:8042/tools/
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172 [...]
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173 "log-level",
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174 "log-level-dicom",
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175 "log-level-generic",
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176 "log-level-http",
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177 "log-level-jobs",
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178 [...]
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179
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180 **Remarks:**
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181
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182 * Messages that are not associated with a well-identified category are
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183 considered as belonging to the ``generic`` category.
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184
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185 * Using the ``--verbose`` or ``--trace`` command-line options, or
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186 changing the value of the ``/tools/log-level`` URI will reset the
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187 log level of **all** the categories. Note that the command-line
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188 options are applied from left to right.
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189
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190 * Provided that you have left the ``DeidentifyLogs`` configuration to
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191 its ``true`` default value, Orthanc logs will not contain any sensitive
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192 patient information.
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193
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194 * Starting from Orthanc 1.12.2, Orthanc is logging the thread name in the
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195 logs. If you need to revert back to the previous format, add the
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196 ``--logs-no-thread`` command line option at startup.