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Add download_always_pull check and sha256 for docker images

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Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
This commit is contained in:
Bogdan Dobrelya
2016-12-19 15:50:04 +01:00
parent 11380769cd
commit b8bc8eee41
5 changed files with 113 additions and 22 deletions
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10
docs/large-deployments.md
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@@ -8,14 +8,8 @@ For a large scaled deployments, consider the following configuration changes:
* Override containers' `foo_image_repo` vars to point to intranet registry.
* Override the ``download_run_once: true`` to download container images only once
then push to cluster nodes in batches. The default delegate node
for pushing images is the first kube-master. Note, if you have passwordless sudo
and docker enabled on the separate admin node, you may want to define the
``download_localhost: true``, which makes that node a delegate for pushing images
while running the deployment with ansible. This maybe the case if cluster nodes
cannot access each over via ssh or you want to use local docker images as a cache
for multiple clusters.
* Override the ``download_run_once: true`` and/or ``download_localhost: true``.
See download modes for details.
* Adjust the `retry_stagger` global var as appropriate. It should provide sane
load on a delegate (the first K8s master node) then retrying failed