CouchDB starup problem and query on persistent data store.

[Ankur Verma]

Hi,

I am totally new to CouchDB and am facing some problems in installing and
running it from source on Ubuntu 9.04.

I have checked out the source from

URL: http://svn.apache.org/repos/asf/couchdb/trunk
Repository Root: http://svn.apache.org/repos/asf
Revision: 1024539

Referred the link http://guide.couchdb.org/draft/source.html for installing.
During installation i faced a make error:
*/usr/bin/erlc  mochiglobal.erl*
*./mochiglobal.erl:36: type boolean() undefined*
Changed boolean() to bool() and the installation was a success. Note that i
know nothing of erlang, so am not 100% sure if this was the correct thing to
do.

After having added the couchdb user and applying the right permissions, i am
running the couchdb server as
*#sudo -i -u couchdb couchdb -b*
got the message
*Apache CouchDB has started, time to relax.*
*
*
but upon checking the log i found an error during the couchdb startup which
is available in the attached log file. In brief:
{errorContext,start_error},
      {reason,shutdown},
      {offender,
          [{pid,undefined},
           {name,couch_secondary_services},
           {mfa,{couch_server_sup,start_secondary_services,[]}},
           {restart_type,permanent},
           {shutdown,infinity},
           {child_type,supervisor}]}]}}

After this, my browser cannot load Futon (
http://127.0.0.1:5984/_utils/index.html), unable to establish the connection
to localhost.
I am currently not sure whether this is a problem with my IP settings or an
issue with the couchdb server. I google'd quite a lot but was unable to get
to anything concrete. Any help with this will be highly appreciated.

Another question i have which is not related to the above problem is that, i
am interested to know the 'backend' to couchdb documents. Forgive me if i
sound stupid or something, but i'd like to know how couchdb stores the
persistent data -- does it back-end to something similar to SQLite  or just
plain text files? Where can i find these persistent files under a Linux
installation?

Request help for the 2 questions above. Many thanks in advance.

Regards,
Ankur

[Mon, 25 Oct 2010 13:18:03 GMT] [error] [<0.84.0>] {error_report,<0.30.0>,
    {<0.84.0>,supervisor_report,
     [{supervisor,{local,couch_secondary_services}},
      {errorContext,start_error},
      {reason,
          {'EXIT',
              {undef,
                  [{lists,keyfind,
                       [name,1,
                        [{loop,#Fun<mochiweb_http.0.65037361>},
                         {port,"5984"},
                         {name,couch_httpd},
                         {ip,"127.0.0.1"},
                         {nodelay,false}]]},
                   {mochilists,is_defined,2},
                   {mochilists,set_default,2},
                   {lists,foldl,3},
                   {mochiweb_http,start,1},
                   {couch_httpd,start_link,2},
                   {supervisor,do_start_child,2},
                   {supervisor,start_children,3}]}}},
      {offender,
          [{pid,undefined},
           {name,httpd},
           {mfa,{couch_httpd,start_link,[]}},
           {restart_type,permanent},
           {shutdown,1000},
           {child_type,worker}]}]}}
[Mon, 25 Oct 2010 13:18:03 GMT] [error] [<0.76.0>] {error_report,<0.30.0>,
    {<0.76.0>,supervisor_report,
     [{supervisor,{local,couch_server_sup}},
      {errorContext,start_error},
      {reason,shutdown},
      {offender,
          [{pid,undefined},
           {name,couch_secondary_services},
           {mfa,{couch_server_sup,start_secondary_services,[]}},
           {restart_type,permanent},
           {shutdown,infinity},
           {child_type,supervisor}]}]}}