couchdb

info

Recommended PREFERRED_VERSION for couchdb:

couchdb	Erlang/OTP	Elixir
3.2.2	24%	1.13%
3.3.3	25.3%	1.14%

In this guide we are using the plain meta-erlang layer to build the couchdb.

The recipe couchdb.inc builds the couchdb using a crosscompile approach. couchdb prefers to work with a full erlang release instead of use the Erlang packages installed on the final image.

As a final result, we are able to run an embedded couchdb using qemu.

Follow the quickstart guide to get a basic working environment and then:

• Add erlang preferred version 22.x in conf/local.conf (check the full list of Erlang supported versions here Dependencies)

echo 'PREFERRED_VERSION_erlang = "22%"

• Add couchdb package to IMAGE_INSTAL in conf/local.conf

echo 'IMAGE_INSTALL:append = " couchdb"' >> conf/local.conf

• Now its time to build the image:

bitbake core-image-minimal

• And check the results with qemu:

runqemu core-image-minimal

couchdb needs two additional manual configurations in the config file (/opt/couchdb/etc/local.ini).

• The first one is to enable the dashboard remote access. Find the session chttpd and change the bind_address. Like this:

[chttpd]
port = 5984
bind_address = 0.0.0.0

• The second one is necessary to add a administrator user to the couchdb instance. Like this:

[admins]
admin = mysecretpassword

Restart or start the couchdb service using the init scripts (/etc/init.d/couchdb restart or systemctl restart couchdb).

couchdb has a nice dashboard where we can check the database and do all the maintenance as well creating documents. Access the address http://192.168.7.2:5984/_utils/index.html to get into the dashboard: