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-rw-r--r--puppet/services/README.rst21
1 files changed, 18 insertions, 3 deletions
diff --git a/puppet/services/README.rst b/puppet/services/README.rst
index 9c2d8c5c..223c3ed0 100644
--- a/puppet/services/README.rst
+++ b/puppet/services/README.rst
@@ -19,8 +19,21 @@ environment to set per service parameters.
Config Settings
---------------
-Each service may define a config_settings output variable which returns
-Hiera settings to be configured.
+Each service may define three ways in which to output variables to configure Hiera
+settings on the nodes.
+
+ * config_settings: the hiera keys will be pushed on all roles of which the service
+ is a part of.
+
+ * global_config_settings: the hiera keys will be distributed to all roles
+
+ * service_config_settings: Takes an extra key to wire in values that are
+ defined for a service that need to be consumed by some other service.
+ For example:
+ service_config_settings:
+ haproxy:
+ foo: bar
+ This will set the hiera key 'foo' on all roles where haproxy is included.
Deployment Steps
----------------
@@ -91,7 +104,9 @@ step, "step2" for the second, etc.
2) Stop all control-plane services, ready for upgrade
- 3) Perform a package update, (either specific packages or the whole system)
+ 3) Perform a package update and install new packages: A general
+ upgrade is done, and only new package should go into service
+ ansible tasks.
4) Start services needed for migration tasks (e.g DB)