memcached config item in Installation Guide for Object Storage Service is wrong

[Johnny]

The memcached config item looks wrong:
In the [filter:cache] section, configure the memcached location:

[filter:cache]
use = egg:swift#memcache
...
memcache_servers = controller:11211

Should it be memcached_servers = controller:11211?
I think yes and please confirm.

-----------------------------------
Release: 2.12.1.dev49 on 2017-01-21 01:33
SHA: a1c88b906b9b056aa3f8b56be1eb000935fc0be4
Source: http://git.openstack.org/cgit/openstack/swift/tree/install-guide/source/controller-install-ubuntu.rst
URL: http://docs.openstack.org/project-install-guide/object-storage/draft/controller-install-ubuntu.html

[Alistair Coles (alistair-coles)]

The doc is correct, the swift memcache middleware conf item is memcache_servers, read here

That is different from the keystone authtoken middleware which uses memcached_servers, but it's curious that the install guide specifies that at all - in swift's sample proxy-server conf [2] authtoken is shown to use swift's cache service rather than memcached directly.

[1] https://github.com/openstack/swift/blob/e24d7c36fa9758618ef88ed1a8e19f4d7bb0404f/swift/common/middleware/memcache.py#L31-L31
[2] https://github.com/openstack/swift/blob/f850ff065e70fb56f9b9e224194553770787f516/etc/proxy-server.conf-sample#L325-L348

[Alistair Coles (alistair-coles)]

The doc is correct, the swift memcache middleware conf item is memcache_servers, read here [1]

That is different from the keystone authtoken middleware which uses memcached_servers, but it's curious that the install guide specifies that at all - in swift's sample proxy-server conf [2] authtoken is shown to use swift's cache service rather than memcached directly.

[1] https://github.com/openstack/swift/blob/e24d7c36fa9758618ef88ed1a8e19f4d7bb0404f/swift/common/middleware/memcache.py#L31-L31
[2] https://github.com/openstack/swift/blob/f850ff065e70fb56f9b9e224194553770787f516/etc/proxy-server.conf-sample#L325-L348