From 97e0768dfae29caeb78acc6fe3427d01762315cf Mon Sep 17 00:00:00 2001 From: Alex Schultz Date: Wed, 8 Feb 2017 09:37:05 -0700 Subject: Reduce memcached memory configuration Previously the memcached configuration was set to use the defaults which would be 95% of the avaiable ram in the system. This can lead to memory contention issues if memcache is heavily utilized. This change reduces the default to 50% and exposes the ability to tune this configuration. Change-Id: Ie8a48ff4cf509e93d7c1487813d5feed5e5131a4 Closes-Bug: #1662941 --- puppet/services/memcached.yaml | 7 +++++++ releasenotes/notes/memcached-max-memory-ef6834d17953fca6.yaml | 7 +++++++ 2 files changed, 14 insertions(+) create mode 100644 releasenotes/notes/memcached-max-memory-ef6834d17953fca6.yaml diff --git a/puppet/services/memcached.yaml b/puppet/services/memcached.yaml index eba8a58b..146cc306 100644 --- a/puppet/services/memcached.yaml +++ b/puppet/services/memcached.yaml @@ -18,6 +18,12 @@ parameters: description: Mapping of service endpoint -> protocol. Typically set via parameter_defaults in the resource registry. type: json + MemcachedMaxMemory: + default: '50%' + description: The maximum amount of memory for memcached to be configured + to use when installed. This can be either a percentage ('50%') + or a fixed value ('2048'). + type: string MonitoringSubscriptionMemcached: default: 'overcloud-memcached' type: string @@ -35,6 +41,7 @@ outputs: # internal_api_uri -> [IP] # internal_api_subnet - > IP/CIDR memcached::listen_ip: {get_param: [ServiceNetMap, MemcachedNetwork]} + memcached::max_memory: {get_param: MemcachedMaxMemory} tripleo.memcached.firewall_rules: '121 memcached': dport: 11211 diff --git a/releasenotes/notes/memcached-max-memory-ef6834d17953fca6.yaml b/releasenotes/notes/memcached-max-memory-ef6834d17953fca6.yaml new file mode 100644 index 00000000..c14cefa0 --- /dev/null +++ b/releasenotes/notes/memcached-max-memory-ef6834d17953fca6.yaml @@ -0,0 +1,7 @@ +--- +features: + - | + Memcached max memory configuration is now exposed va MemcachedMaxMemory. +upgrade: + - | + Reduce the default memory configuration for memcached from 95% to 50%. -- cgit 1.2.3-korg