diff options
Diffstat (limited to 'puppet/services/README.rst')
| -rw-r--r-- | puppet/services/README.rst | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/puppet/services/README.rst b/puppet/services/README.rst index 9c2d8c5c..f19b6cca 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 ---------------- @@ -87,11 +100,26 @@ step, "step2" for the second, etc. Steps/tages correlate to the following: - 1) Quiesce the control-plane, e.g disable LoadBalancer, stop pacemaker cluster - - 2) Stop all control-plane services, ready for upgrade - - 3) Perform a package update, (either specific packages or the whole system) + 1) Stop all control-plane services. + + 2) Quiesce the control-plane, e.g disable LoadBalancer, stop + pacemaker cluster: this will stop the following resource: + - ocata: + - galera + - rabbit + - redis + - haproxy + - vips + - cinder-volumes + - cinder-backup + - manilla-share + - rbd-mirror + + The exact order is controlled by the cluster constraints. + + 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) |