[tor-bugs] #15475 [Tor Sysadmin Team]: Enable access to historical consensus health pages

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#15475: Enable access to historical consensus health pages
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 Reporter:  tom                |          Owner:
     Type:  defect             |         Status:  new
 Priority:  normal             |      Milestone:
Component:  Tor Sysadmin Team  |        Version:
 Keywords:                     |  Actual Points:
Parent ID:                     |         Points:
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 Currently consensus health has a little arrow next to a relay to jump to
 that fingerprint in the previous hour's consensus. (We store 3 weeks of
 consensuses).

 Clicking the arrow doesn't work, because the html files are stored gzipped
 on the server.  Apache must be modified to enable access to those files.

 Everyone I found was using the same trick to serve compressed content
 through Apache: trick Apache into sending gzip content but not compressing
 it, and then manually adding the gzip header.  I have this deployed on
 http://utternoncesense.com like so:

 {{{
 <VirtualHost [my IPs]>
         ServerName utternoncesense.com
         ServerAlias www.utternoncesense.com
         ServerAlias ipv6.utternoncesense.com

         DocumentRoot /var/www/localhost/htdocs/consensus-health
         <Directory "/var/www/localhost/htdocs/consensus-health">
                Options -Indexes
                AllowOverride All
                Require all granted
         </Directory>

         SetOutputFilter deflate
         Header set Content-Encoding gzip

         <FilesMatch "consensus-health-(.+)\.html$">
                 SetEnv no-gzip 1
         </FilesMatch>

         RewriteEngine On
         RewriteCond %{HTTP:Accept-Encoding} gzip
         RewriteCond %{REQUEST_FILENAME}.gz -f
         RewriteRule (.*\.html)$ $1.gz [L]
 </VirtualHost>
 }}}


 A symlink from a .html to the .html.gz must be present.  If the transfer
 script copies symlinks as files, that would be bad (well, double the size
 needlessly).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15475>
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