b47116d7aa
This refactors resource dependencies to improve the following points. - Avoid unnecessary dependencies across services. For example aodh service does not require cinder db. - Restart only api service when config files like paste.ini, which are used only be api service is changed. Change-Id: Id4916244bdf4cd4ff2b45a45ec3e25fb0d115249
101 lines
4.3 KiB
Puppet
101 lines
4.3 KiB
Puppet
# == Class: nova::deps
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#
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# Nova anchors and dependency management
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#
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class nova::deps {
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# Setup anchors for install, config and service phases of the module. These
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# anchors allow external modules to hook the begin and end of any of these
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# phases. Package or service management can also be replaced by ensuring the
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# package is absent or turning off service management and having the
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# replacement depend on the appropriate anchors. When applicable, end tags
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# should be notified so that subscribers can determine if installation,
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# config or service state changed and act on that if needed.
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anchor { 'nova::install::begin': }
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-> Package<| tag == 'nova-package'|>
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~> anchor { 'nova::install::end': }
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-> anchor { 'nova::config::begin': }
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-> Nova_config<||>
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~> anchor { 'nova::config::end': }
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-> anchor { 'nova::db::begin': }
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-> anchor { 'nova::db::end': }
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~> anchor { 'nova::dbsync::begin': }
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-> anchor { 'nova::dbsync::end': }
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~> anchor { 'nova::service::begin': }
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~> Service<| tag == 'nova-service' |>
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~> anchor { 'nova::service::end': }
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Anchor['nova::config::begin']
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-> Nova_api_paste_ini<||>
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-> Anchor['nova::config::end']
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Anchor['nova::config::begin']
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-> Nova_rootwrap_config<||>
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~> Anchor['nova::config::end']
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Anchor['nova::config::begin']
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-> Nova_api_uwsgi_config<||>
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-> Anchor['nova::config::end']
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Anchor['nova::config::begin']
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-> Nova_api_metadata_uwsgi_config<||>
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-> Anchor['nova::config::end']
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# Support packages need to be installed in the install phase, but we don't
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# put them in the chain above because we don't want any false dependencies
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# between packages with the nova-package tag and the nova-support-package
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# tag. Note: the package resources here will have a 'before' relationship on
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# the nova::install::end anchor. The line between nova-support-package and
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# nova-package should be whether or not Nova services would need to be
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# restarted if the package state was changed.
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Anchor['nova::install::begin']
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-> Package<| tag == 'nova-support-package'|>
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-> Anchor['nova::install::end']
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# Start libvirt services during the service phase
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Anchor['nova::service::begin']
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-> Exec<| tag == 'libvirt-service'|>
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-> Service<| tag == 'libvirt-service'|>
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-> Anchor['nova::service::end']
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# We need openstackclient before marking service end so that nova
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# will have clients available to create resources. This tag handles the
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# openstackclient but indirectly since the client is not available in
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# all catalogs that don't need the client class (like many spec tests)
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Package<| tag == 'openstackclient'|>
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-> Anchor['nova::service::end']
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# Manage libvirt configurations during the config phase
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Anchor['nova::config::begin'] -> Libvirtd_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Virtlogd_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Virtlockd_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Virtnodedevd_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Virtproxyd_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Virtqemud_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Virtsecretd_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Virtstoraged_config<||> -> Anchor['nova::config::end']
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Anchor['nova::config::begin'] -> Qemu_config<||> -> Anchor['nova::config::end']
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# Installation or config changes will always restart services.
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Anchor['nova::install::end'] ~> Anchor['nova::service::begin']
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Anchor['nova::config::end'] ~> Anchor['nova::service::begin']
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# Nova requres separate sync operation for API db, and it should be executed
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# before non-API db sync.
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Anchor['nova::db::end']
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~> anchor { 'nova::dbsync_api::begin': }
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-> anchor { 'nova::dbsync_api::end': }
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~> Anchor['nova::dbsync::begin']
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Anchor['nova::dbsync_api::end'] ~> Anchor['nova::service::begin']
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Anchor['nova::dbsync_api::end']
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~> anchor { 'nova::cell_v2::begin': }
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~> anchor { 'nova::cell_v2::end': }
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~> Anchor['nova::dbsync::begin']
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Anchor['nova::dbsync_api::end']
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~> anchor { 'nova::db_online_data_migrations::begin': }
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-> anchor { 'nova::db_online_data_migrations::end': }
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~> Anchor['nova::service::begin']
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}
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