cupsd-logs(5)

1cupsd-logs(5)                    OpenPrinting                    cupsd-logs(5)
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NAME

6       cupsd-logs - cupsd log files (access_log, error_log, and page_log)
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DESCRIPTION

9       cupsd(8)  normally  maintains  three log files: access_log to track re‐
10       quests that are submitted to the scheduler, error_log to track progress
11       and  errors,  and page_log to track pages that are printed.  Configura‐
12       tion directives in cupsd.conf(5) and  cups-files.conf(5)  control  what
13       information is logged and where it is stored.
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15   ACCESS LOG FILE FORMAT
16       The  access_log file lists each HTTP resource that is accessed by a web
17       browser or client.  Each line is in an  extended  version  of  the  so-
18       called  "Common  Log Format" used by many web servers and web reporting
19       tools:
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21           host group user date-time "method resource version" status bytes
22             ipp-operation ipp-status
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24       For example:
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26           10.0.1.2 - - [01/Dec/2005:21:50:28 +0000] "POST / HTTP/1.1" 200 317
27             CUPS-Get-Printers successful-ok-ignored-or-substituted-attributes
28           localhost - - [01/Dec/2005:21:50:32 +0000] "GET /admin HTTP/1.1"
29             200 0 - -
30           localhost - - [01/Dec/2005:21:50:32 +0000] "POST / HTTP/1.1"
31             200 157 CUPS-Get-Printers
32             successful-ok-ignored-or-substituted-attributes
33           localhost - - [01/Dec/2005:21:50:32 +0000] "POST / HTTP/1.1"
34             200 1411 CUPS-Get-Devices -
35           localhost - - [01/Dec/2005:21:50:32 +0000] "GET /admin HTTP/1.1"
36             200 6667 - -
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38       The host field will normally only be an IP address unless you have  en‐
39       abled the HostNameLookups directive in the cupsd.conf file or if the IP
40       address corresponds to your local machine.
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42       The group field always contains "-".
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44       The user field is the authenticated username of  the  requesting  user.
45       If no username and password is supplied for the request then this field
46       contains "-".
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48       The date-time field is the date and time of the request in  local  time
49       and is in the format "[DD/MON/YYYY:HH:MM:SS +ZZZZ]".
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51       The  method  field  is  the HTTP method used: "GET", "HEAD", "OPTIONS",
52       "POST", or "PUT".  "GET" requests  are  used  to  get  files  from  the
53       server,  both  for  the  web interface and to get configuration and log
54       files.  "HEAD" requests are used to get information  about  a  resource
55       prior  to  a "GET".  "OPTIONS" requests are used to upgrade connections
56       to TLS encryption.  "POST" requests are used for  web  interface  forms
57       and  IPP  requests.   "PUT"  requests  are used to upload configuration
58       files.
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60       The resource field is the filename of the requested resource.
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62       The version field is the HTTP specification version used by the client.
63       For CUPS clients this will always be "HTTP/1.1".
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65       The  status  field  contains  the HTTP result status of the request, as
66       follows:
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68            200  Successful operation.
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70            201  File created/modified successfully.
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72            304  The requested file has not changed.
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74            400  Bad HTTP request; typically this means that you have a  mali‐
75                 cious program trying to access your server.
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77            401  Unauthorized,  authentication  (username  +  password) is re‐
78                 quired.
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80            403  Access is forbidden; typically this means that a client tried
81                 to  access  a file or resource they do not have permission to
82                 access.
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84            404  The file or resource does not exist.
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86            405  URL access method is not allowed; typically  this  means  you
87                 have a web browser using your server as a proxy.
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89            413  Request  too  large; typically this means that a client tried
90                 to print a file larger than the MaxRequestSize allows.
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92            426  Upgrading to TLS-encrypted connection.
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94            500  Server error; typically this happens when the server  is  un‐
95                 able  to  open/create a file - consult the error_log file for
96                 details.
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98            501  The client requested encryption but encryption support is not
99                 enabled/compiled in.
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101            505  HTTP  version number not supported; typically this means that
102                 you have a malicious program trying to access your server.
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104       The bytes field contains the number of bytes in the request.  For  POST
105       requests  the  bytes field contains the number of bytes of non-IPP data
106       that is received from the client.
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108       The ipp-operation field contains either "-" for non-IPP requests or the
109       IPP operation name for POST requests containing an IPP request.
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111       The  ipp-status  field  contains either "-" for non-IPP requests or the
112       IPP status code name for POST requests containing an IPP response.
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114   ERROR LOG FILE FORMAT
115       The error_log file lists messages from the scheduler  -  errors,  warn‐
116       ings,  etc.  The  LogLevel directive in the cupsd.conf(5) file controls
117       which messages are logged:
118
119           level date-time message
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121       For example:
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123           I [20/May/1999:19:18:28 +0000] [Job 1] Queued on 'DeskJet' by 'mike'.
124           D [20/May/1999:19:18:28 +0000] [Job 1] argv[0]="DeskJet"
125           D [20/May/1999:19:18:28 +0000] [Job 1] argv[1]="1"
126           D [20/May/1999:19:18:28 +0000] [Job 1] argv[2]="mike"
127           D [20/May/1999:19:18:28 +0000] [Job 1] argv[3]="myjob"
128           D [20/May/1999:19:18:28 +0000] [Job 1] argv[4]="1"
129           D [20/May/1999:19:18:28 +0000] [Job 1] argv[5]="media=
130             na_letter_8.5x11in sides=one-sided"
131           D [20/May/1999:19:18:28 +0000] [Job 1] argv[6]="/var/spool/cups/
132             d000001-001"
133           I [20/May/1999:19:21:02 +0000] [Job 2] Queued on 'DeskJet' by 'mike'.
134           I [20/May/1999:19:22:24 +0000] [Job 2] Canceled by 'mike'.
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136       The level field contains the type of message:
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138       A    Alert message (LogLevel alert)
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140       C    Critical error message (LogLevel crit)
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142       D    Debugging message (LogLevel debug)
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144       d    Detailed debugging message (LogLevel debug2)
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146       E    Normal error message (LogLevel error)
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148       I    Informational message (LogLevel info)
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150       N    Notice message (LogLevel notice)
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152       W    Warning message (LogLevel warn)
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154       X    Emergency error message (LogLevel emerg)
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156       The date-time field contains the date and time of when the page started
157       printing.  The format of this field is identical to the data-time field
158       in the access_log file.
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160       The message field contains a free-form textual message.  Messages  from
161       job filters are prefixed with "[Job NNN]" where "NNN" is the job ID.
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163   PAGE LOG FILE FORMAT
164       The  page_log  file  lists  the total number of pages (sheets) that are
165       printed.  By default, each line contains the following information:
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167           printer user job-id date-time total num-sheets job-billing
168             job-originating-host-name job-name media sides
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170       For example the entry for a two page  job  called  "myjob"  might  look
171       like:
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173           DeskJet root 1 [20/May/1999:19:21:06 +0000] total 2 acme-123
174             localhost myjob na_letter_8.5x11in one-sided
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176       The  PageLogFormat  directive  in the cupsd.conf(5) file can be used to
177       change this information.
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179       The printer field contains the name of the  printer  that  printed  the
180       page.   If  you  send a job to a printer class, this field will contain
181       the name of the printer that was assigned the job.
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183       The user field contains the name of the user (the IPP  requesting-user-
184       name attribute) that submitted this file for printing.
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186       The job-id field contains the job number of the page being printed.
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188       The date-time field contains the date and time of when the page started
189       printing.  The format of this field is identical to the data-time field
190       in the access_log file.
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192       The  num-sheets  field provides the total number of pages (sheets) that
193       have been printed on for the job.
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195       The job-billing field contains a copy of  the  job-billing  or  job-ac‐
196       count-id  attributes  provided with the IPP Create-Job or Print-Job re‐
197       quests or "-" if neither was provided.
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199       The job-originating-host-name field contains the hostname or IP address
200       of the client that printed the job.
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202       The  job-name  field contains a copy of the job-name attribute provided
203       with the IPP Create-Job or Print-Job requests or "-" if none  was  pro‐
204       vided.
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206       The  media  field  contains a copy of the media or media-col/media-size
207       attribute provided with the IPP Create-Job or Print-Job requests or "-"
208       if none was provided.
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210       The  sides  field  contains a copy of the sides attribute provided with
211       the IPP Create-Job or Print-Job requests or "-" if none was provided.
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COPYRIGHT

218       Copyright © 2021-2023 by OpenPrinting.
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2222021-02-28                           CUPS                        cupsd-logs(5)

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