beside the fact that naming the variable to specify the number of machines executed in *parallel* is named *serial* - the number of hosts chosen in this example is not optimal, either: 2x2 = 4; so - 3 hosts in 2 batches should clear things up a little
* play, block, task: New attribute forks
With this it is possible to limit the number of concurrent task runs.
forks can now be used in play, block and task. If forks is set in different
levels in the chain, then the smallest value will be used for the task.
The attribute has been added to the Base class as a list to easily provide
all the values that have been set in the different levels of the chain.
A warning has been added because of the conflict with run_once. forks will
be ignored in this case.
The forks limitation in StrategyBase._queue_task is not used for the free
strategy.
Signed-off-by: Thomas Woerner <twoerner@redhat.com>
* Handle forks in free strategy
The forks attribute for the free strategy is handled in run in the free
StrategyModule. This is dony by counting the amount of tasks where the uuid
is the same as the current task, that should be queued next. If this amount
is bigger or equal to the forks attribute from the chain (task, block,
play), then it will be skipped to the next host. Like it is also done with
blocked_hosts.
Signed-off-by: Thomas Woerner <twoerner@redhat.com>
* Test cases for forks with linear and free strategy
With ansible_python_interpreter defined in inventory file using
ansible_playbook_python.
Signed-off-by: Thomas Woerner <twoerner@redhat.com>
* Changing forks keyword to throttle and adding some more docs
* Update playbooks_strategies.rst
##### SUMMARY
This page is very confusing and may suggest, that there is still a `serial` strategy (like it used to), but now it is just a directive of `linear` strategy. Multiple people reported this to me and it needs change.
##### ISSUE TYPE
- Docs Pull Request
+label: docsite_pr
* Update docs/docsite/rst/user_guide/playbooks_strategies.rst
Co-Authored-By: Sam Doran <sdoran@redhat.com>
* Update docs/docsite/rst/user_guide/playbooks_strategies.rst
Co-Authored-By: Sam Doran <sdoran@redhat.com>
* Updates strategies page more broadly
* incorporate samdoran feedback
* fixes broken link
* new page title, focus on user intent
* more sdoran feedback
* adds details on setting the number of forks
* Docs refactor as outlined in https://github.com/ansible/proposals/issues/79. Moves content into 'guides'; refactors TOC; fixes CSS; design tweaks to layout and CSS; fixes generated plugin, CLI and module docs to fix links accodingly; more.
* Adding extra blank line for shippable
2018-02-13 07:23:55 -08:00
Renamed from docs/docsite/rst/playbooks_strategies.rst (Browse further)
