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Commit20bbbfb

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[#43121095] Add puppet.loadhosts task
Loads hosts that use given Puppet class(es). This differs from the `class` taskwhich only returns nodes of a given "role". It uses the functionality addedto `govuk_node_list` in:https://github.gds/gds/puppet/commit/d986313df235af0ac225f8e7f3e5838574a3dec0For example, to run a command on machines that include the `redis` and`govuk::apps::govuk_crawler_worker` hosts. Note there is `logs-redis-N` inaddition to `redis-N`: (fabric)➜ fabric-scripts git:(puppet_loadhosts_by_classes) fab --hide=running,status preview puppet.loadhosts:redis,govuk::apps::govuk_crawler_worker hosts logs-redis-1.management.production logs-redis-2.management.production mirrorer-1.management.production redis-1.backend.production redis-2.backend.production
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‎puppet.py‎

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fromfabric.apiimport*
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@task
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defloadhosts(*classnames):
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"""Load hosts that include given Puppet class(es)"""
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classnames=','.join(classnames)
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withhide('running','stdout'):
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withsettings(host_string=env.gateway,gateway=None):
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env.hosts=run('govuk_node_list -C %s'%classnames).splitlines()
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defpuppet(*args):
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sudo('govuk_puppet %s'%' '.join(args))
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