How to modify Apache config on polyanthum?

Trac:
Parent Ticket: #30472 (moved)

added component::internal services/services admin team owner::phw parent::30472 points::0.5 priority::medium resolution::fixed severity::normal status::closed type::defect labels

just in case it's only under our control, could you specify exactly the line you want to have added so i can just do it instead of bounce it back to you here later? :)

thanks

I think this is what I want. I didn't actually test it because I filed this ticket instead :) Basically, I want requests going to bridges.torproject.org/scan/ to be redirected to another web server that listens on 127.0.0.1:4000.

--- bridges.torproject.org.conf.orig	2019-05-30 18:24:26.506273388 +0000
+++ bridges.torproject.org.conf.diff	2019-05-30 18:26:19.231435195 +0000
@@ -26,6 +26,7 @@
 
 		ProxyPass /meek/ http://127.0.0.1:2000/
 		ProxyPass /moat/ http://127.0.0.1:3881/moat/
+		ProxyPass /scan/ http://127.0.0.1:4000/
 
 		ProxyPass / http://127.0.0.1:3880/ retry=10
 		ProxyPassReverse / http://127.0.0.1:3880/

so. er. there are actually two version control systems in there:

all of /etc is managed through git, by a tool called etckeeper which does daily autocommits and has hooks that run after package installs and so on
the /etc/apache2/sites-available directory, on top of that is also managed through RCS

The last commit on that file in RCS is:

----------------------------
revision 1.15	locked by: root;
date: 2017/11/15 23:27:10;  author: root;  state: Exp;  lines: +1 -0
update run by root(isis) at Wed, 15 Nov 2017 23:27:10 +0000 on polyanthum.torproject.org

The diff is:

root@polyanthum:/etc/apache2/sites-available# rcsdiff -u -r1.14 -r1.15 ./bridges.torproject.org.conf 
===================================================================
RCS file: ./RCS/bridges.torproject.org.conf,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -r1.14 -r1.15
--- ./bridges.torproject.org.conf	2017/04/27 00:57:53	1.14
+++ ./bridges.torproject.org.conf	2017/11/15 23:27:10	1.15
@@ -25,6 +25,7 @@
 		</Proxy>
 
 		ProxyPass /meek/ http://127.0.0.1:2000/
+		ProxyPass /moat/ http://127.0.0.1:3881/moat/
 
 		ProxyPass / http://127.0.0.1:3880/ retry=10
 		ProxyPassReverse / http://127.0.0.1:3880/

Those changes were also committed into git, through the daily autocommit. Hilarious. :)

In any case, those files are only writable by root, so I guess you need to ask me or other tpa to make changes.

So I just implemented your change. I grepped through the access log and it seems the /scan prefix wasn't in use anywhere, so it's a safe bet. The thing gives us a 404 right now, but I guess that's to be expected because it doesn't seem like anything is running on port 4000. Here's the error log in apache:

[Fri May 31 00:43:11.833004 2019] [proxy:error] [pid 17339:tid 140323233597184] (111)Connection refused: AH00957: HTTP: attempt to connect to 127.0.0.1:4000 (127.0.0.1) failed

I've committed the change into RCS and git, for good measure.

Then I'll try to forget what I have seen here, for mental health reasons. :p

I hope that helps!

Trac:
Status: assigned to closed
Resolution: N/A to fixed

and, and for the record, those are the commands to commit the file:

co -l bridges.torproject.org.conf # unlock the file (ie. make it writable. yes, this is a thing in RCS.)
ci -m'... commit message ...' -u bridges.torproject.org.conf # this commits the file, and unlocks it
git commit -m'...commit message...' . # also commit everything into git, including the RCS directory of course

watch out for the ci command. by default, it removes the committed file if you don't use any flags, which might be... surprising, to say the least, for people used to more... modern VCS.

closed

changed time estimate to 4h

mentioned in issue #34089 (moved)

mentioned in issue #30472 (moved)

How to modify Apache config on polyanthum?

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