06f8577a61
The stein version of python-oslo.messaging (9.0.0+) has removed the following config options from the [oslo_messaging_rabbit] section: rabbit_host, rabbit_port, rabbit_hosts, rabbit_userid, rabbit_password, rabbit_virtual_host rabbit_max_retries, and rabbit_durable_queues. The above change requires a sync from charm-helpers. Additionally the transport_url directive has been moved to the [DEFAULT] section. These have been deprecated since Ocata, therefore this change will be provided to pre-Stein templates in order to drop deprecation warnings. See release notes at: https://docs.openstack.org/releasenotes/oslo.messaging/index.html Change-Id: I4e6bf7fa75bc2b445e2a7047ef7ca14a36478e78 Closes-Bug: #1817672 |
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README.md
Overview
Heat is the main project in the OpenStack Orchestration program. It implements an orchestration engine to launch multiple composite cloud applications based on templates in the form of text files that can be treated like code.
This charm deploys the Heat infrastructure.
Usage
Heat requires the existence of the other core OpenStack services deployed via Juju charms, specifically: mysql, rabbitmq-server, keystone and nova-cloud-controller. The following assumes these services have already been deployed.
After deployment of the cloud, the domain-setup action must be run to configure required domains, roles and users in the cloud for Heat stacks.
For juju 2.x deployments use:
juju run-action heat/0 domain-setup
If using juju 1.x run:
juju action do heat/0 domain-setup
This is only required for >= OpenStack Kilo.
HA/Clustering
There are two mutually exclusive high availability options: using virtual IP(s) or DNS. In both cases, a relationship to hacluster is required which provides the corosync back end HA functionality.
To use virtual IP(s) the clustered nodes must be on the same subnet such that the VIP is a valid IP on the subnet for one of the node's interfaces and each node has an interface in said subnet. The VIP becomes a highly-available API endpoint.
At a minimum, the config option 'vip' must be set in order to use virtual IP HA. If multiple networks are being used, a VIP should be provided for each network, separated by spaces. Optionally, vip_iface or vip_cidr may be specified.
To use DNS high availability there are several prerequisites. However, DNS HA does not require the clustered nodes to be on the same subnet. Currently the DNS HA feature is only available for MAAS 2.0 or greater environments. MAAS 2.0 requires Juju 2.0 or greater. The clustered nodes must have static or "reserved" IP addresses registered in MAAS. The DNS hostname(s) must be pre-registered in MAAS before use with DNS HA.
At a minimum, the config option 'dns-ha' must be set to true and at least one of 'os-public-hostname', 'os-internal-hostname' or 'os-internal-hostname' must be set in order to use DNS HA. One or more of the above hostnames may be set.
The charm will throw an exception in the following circumstances: If neither 'vip' nor 'dns-ha' is set and the charm is related to hacluster If both 'vip' and 'dns-ha' are set as they are mutually exclusive If 'dns-ha' is set and none of the os-{admin,internal,public}-hostname(s) are set
Network Space support
This charm supports the use of Juju Network Spaces, allowing the charm to be bound to network space configurations managed directly by Juju. This is only supported with Juju 2.0 and above.
API endpoints can be bound to distinct network spaces supporting the network separation of public, internal and admin endpoints.
Access to the underlying MySQL instance can also be bound to a specific space using the shared-db relation.
To use this feature, use the --bind option when deploying the charm:
juju deploy heat --bind "public=public-space internal=internal-space admin=admin-space shared-db=internal-space"
alternatively these can also be provided as part of a juju native bundle configuration:
heat:
charm: cs:xenial/heat
num_units: 1
bindings:
public: public-space
admin: admin-space
internal: internal-space
shared-db: internal-space
NOTE: Spaces must be configured in the underlying provider prior to attempting to use them.
NOTE: Existing deployments using os-*-network configuration options will continue to function; these options are preferred over any network space binding provided if set.