openstack/zun
Code Issues Proposed changes

Using --hint option for scheduling

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The key-value pair(s) of hint option is for scheduler to select host.

Change-Id: Ife06688f1ad8bb9faf0a2763774861ddf04561d0
This commit is contained in:
Feng Shengqin 2017-11-17 13:51:28 +08:00
parent a4fadf792f
commit 0d5f8b9813
1 changed files with 3 additions and 3 deletions
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6
specs/local-volume-integration.rst
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@ -42,7 +42,7 @@ This spec proposes the following changes.
Operators can tune this config to restrict the path for bind-mounting. Operators can tune this config to restrict the path for bind-mounting.
4. The administrator would be aware that a special container should be scheduled 4. The administrator would be aware that a special container should be scheduled
on which nodes. Users may combine --mount and --label options to create a container. on which nodes. Users may combine --mount and --hint options to create a container.
Workflow Workflow
============= =============
@ -52,14 +52,14 @@ following:
1. A user calls Zun APIs to create a container with a local volume:: 1. A user calls Zun APIs to create a container with a local volume::
$ zun run --mount type=local,source=/proc,destination=/proc \ $ zun run --mount type=local,source=/proc,destination=/proc \
--label <key=value> centos --hint <key=value> centos
2. After receiving this request, Zun will check if the mount info has local volumes. 2. After receiving this request, Zun will check if the mount info has local volumes.
Then it will check the user has administrator permissions operation. Then it will check the user has administrator permissions operation.
3. Zun will create an item for local volume, and store in the volume_mapping table. 3. Zun will create an item for local volume, and store in the volume_mapping table.
4. Zun will choose a node by the option --label, and check the local volume whether in 4. Zun will choose a node by the option --hint, and check the local volume whether in
the volume lists in forbidden_volume.conf. the volume lists in forbidden_volume.conf.
5. Zun will calls Docker API to create a container and use the option "-v". 5. Zun will calls Docker API to create a container and use the option "-v".