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author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 26 Dec 2020 10:59:40 +0100
parents 090cc988c35e
children eaa6cdfa7ba6
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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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53 Under Windows, if you used the official installer by Osimis:
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55 1. Download the `precompiled command-line version
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56 <https://www.orthanc-server.com/download-windows.php>`__ of Orthanc.
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57
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58 2. Stop the Orthanc service. The actual process depends on your
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59 version of Windows.
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60
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61 3. Copy the just-downloaded ``Orthanc-1.8.2-Release.exe`` together
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62 with your configuration file (that is by default located in
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63 ``C:\Orthanc\Configuration.json``) into the same folder
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64 (e.g. ``C:\Temp``).
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65
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66 4. In a command-line shell, manually start Orthanc to generate the
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67 ``Orthanc.log`` file::
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69 $ cd C:\Temp
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70 $ Orthanc-1.8.2-Release.exe --verbose Configuration.json > Orthanc.log 2<&1
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72 5. Once the log has been generated (by default, it is available as
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73 ``C:\Temp\Orthanc.log``), stop Orthanc and possibly restart the
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74 Orthanc service.
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77 Under Debian GNU/Linux
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78 ^^^^^^^^^^^^^^^^^^^^^^
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79
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80 1. Stop the Orthanc service::
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81
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82 $ sudo /etc/init.d/orthanc stop
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83
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84 2. Manually start Orthanc (using the same configuration as the
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85 service) and generate the log::
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86
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87 $ sudo -u orthanc /usr/sbin/Orthanc --verbose /etc/orthanc/ > Orthanc.log 2>&1
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88
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89 3. Restart the Orthanc service::
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90
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91 $ sudo /etc/init.d/orthanc start
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93
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94 Under Docker
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95 ^^^^^^^^^^^^
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96
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97 The command-line to be used is::
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98
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99 $ 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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101
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102 Changing the log level while Orthanc is running
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103 ===============================================
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104
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105 Starting with Orthanc 1.6.0, you can dynamically change the log level
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106 while Orthanc is running using the :ref:`REST API <rest>`::
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107
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108 $ curl -X PUT http://localhost:8042/tools/log-level -d "verbose"
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109 $ curl -X PUT http://localhost:8042/tools/log-level -d "trace"
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110 $ curl -X PUT http://localhost:8042/tools/log-level -d "default"
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112
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113 Log categories
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114 ==============
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115
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116 Starting with Orthanc 1.8.2, log messages are associated with a
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117 **category**. The category indicates the subsystem of Orthanc from
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118 which the message comes (such as the embedded HTTP server, the DICOM
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119 communications, Lua scripts...).
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120
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121 It is possible to choose a different log level for each category. This
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122 can be done when starting Orthanc as follows::
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123
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124 $ ./Orthanc --verbose-http --trace-dicom
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125
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126 This command would start Orthanc in verbose mode for HTTP-related
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127 messages, and would enable debug messages related to DICOM. The full
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128 list of the available log categories (``http``, ``dicom``, ``lua``,
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129 ``plugins``...) can be found in the :ref:`manpage of Orthanc
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130 <manpage>` or by starting Orthanc with the ``--help`` flag.
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131
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132 It is also possible to dynamically change the log level of a category
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133 while Orthanc is running by using the :ref:`REST API <rest>`, for
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134 instance::
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135
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136 $ curl -X PUT http://localhost:8042/tools/log-level-http -d "verbose"
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137 $ curl -X PUT http://localhost:8042/tools/log-level-dicom -d "trace"
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138 $ curl -X PUT http://localhost:8042/tools/log-level-plugins -d "default"
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139
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140 The list of the available log categories is also available through the
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141 REST API, by inspecting the URIs that are prefixed by
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142 ``/tools/log-level``::
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143
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144 $ curl http://localhost:8042/tools/
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145 [...]
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146 "log-level",
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147 "log-level-dicom",
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148 "log-level-generic",
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149 "log-level-http",
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150 "log-level-jobs",
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151 [...]
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152
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153 **Remarks:**
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154
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155 * Messages that are not associated with a well-identified category are
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156 considered as belonging to the ``generic`` category.
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157
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158 * Using the ``--verbose`` or ``-trace`` command-line options, or
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159 changing the value of the ``/tools/log-level`` URI will reset the
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160 log level of **all** the categories. Note that the command-line
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161 options are applied from left to right.
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162