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Example of idempotent (pseudo-)random() usage. (#31048)

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Add note to use idempotent random() seed based on inventory_hostname.
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Daniel Linder
2017-09-28 14:59:10 -05:00
committed by scottb
parent d07d9390d7
commit 90dd698b86
1 changed files with 3 additions and 0 deletions
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docs/docsite/rst/playbooks_filters.rst
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@@ -451,7 +451,10 @@ To get a sha512 password hash (random salt)::
To get a sha256 password hash with a specific salt::
{{ 'secretpassword'|password_hash('sha256', 'mysecretsalt') }}
An idempotent method to generate unique hashes per system is to use a salt that is consistent between runs::
{{ 'secretpassword'|password_hash('sha512', 65534|random(seed=inventory_hostname)|string) }}
Hash types available depend on the master system running ansible,
'hash' depends on hashlib password_hash depends on passlib (http://passlib.readthedocs.io/en/stable/lib/passlib.hash.html).