openstack/devstack
Code Issues Proposed changes

Correct keystone memcached host setting

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keystone was configured to connect to memcached on the host IP
address. Unfortunately, memcached is only listening on localhost,
so this setting actually hurts performance as keystone fails to
connect to the memcached server. There's no indication of this in
the keystone logs since this is just how memcache client works
(ignoring errors).

You can verify this by
1) in /etc/memcached.conf, set -vv
2) restart memcached: service memcached restart
3) watch /var/log/memcached.log
4) There will be no output

with this change, there will be output in /var/log/memcached.log

Also the performance should be a lot better.

Change-Id: I95d798d122e2a95e27eb1d2c4e786c3cd844440b
This commit is contained in:
Brant Knudson 2016-06-07 17:44:06 -05:00
parent 026cad84a3
commit 75ace7a5ed
1 changed files with 1 additions and 1 deletions
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2
lib/keystone
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@ -246,7 +246,7 @@ function configure_keystone {
# Enable caching
iniset $KEYSTONE_CONF cache enabled "True"
iniset $KEYSTONE_CONF cache backend "oslo_cache.memcache_pool"
iniset $KEYSTONE_CONF cache memcache_servers $SERVICE_HOST:11211
iniset $KEYSTONE_CONF cache memcache_servers localhost:11211
# Do not cache the catalog backend due to https://bugs.launchpad.net/keystone/+bug/1537617
iniset $KEYSTONE_CONF catalog caching "False"