From f24247660e9f6539737d460c59ab66ec2068333b Mon Sep 17 00:00:00 2001 From: zhang-jun3g Date: Mon, 9 Nov 2015 16:31:16 +0800 Subject: Move files from doc to docs Move files to docs for automation html release. JIRA:ESCALATOR-27 Change-Id: I3654b18ad6c7fc94614fd55afe5e3140bf467752 Signed-off-by: zhang-jun3g --- docs/06-Information_Flows.rst | 56 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 docs/06-Information_Flows.rst (limited to 'docs/06-Information_Flows.rst') diff --git a/docs/06-Information_Flows.rst b/docs/06-Information_Flows.rst new file mode 100644 index 0000000..641b59b --- /dev/null +++ b/docs/06-Information_Flows.rst @@ -0,0 +1,56 @@ +Information Flows +----------------- + +This section describes the information flows among the function +entities when Escalator is in actions. + +1. Upgrade process of Compute nodes + +1.1 consider VIM as a whole + +.. figure:: images/figure4.png + :name: figure4 + :width: 100% + +process is: +1. Operators add new version files on the VIM,initiate the upgrade. +2. VIM chooses some compute nodes as the upgrade target nodes, and set them +into maintenance mode. VIM queries the list of running VMs on target nodes. +3. VIM notice VNFM corresponding to the virtual machine, to migrate the +business. +4. VNFM migrates the business. If the business is in active of active-standby +mode, it will initiate switch-over. If the business is in loading balance mode, +it will move the business to other node. +5. After VNFM moves business, it notifies the VIM. +6. VIM judges whether the business on the target VM has all been moved. If +not, VIM migrates the VM with business loaded to other free nodes. Then VIM +upgrades the target computer nodes. After upgrade, VIM set the target compute +nodes into normal nodes. +7. If there are computer nodes remained to be upgraded, goto step 2. + +4.2 from inside VIM + +.. figure:: images/figure5.png + :name: figure5 + :width: 100% + +.. figure:: images/figure6.png + :name: figure6 + :width: 100% + +process is: +1. Upgrade manager receives user operation commands. Add new version files. +Upgrade is began. +2. Upgrade Manager selects compute node A to Upgrade. Query list of the VMs +running the compute nodes A to the Cloud Manager, and set the node to +maintenance mode, that is to say creation or migration of new VM on this node +is impossible anymore. +3. Upgrade Manager notifies VNFM compute node A into maintenance mode by VIM +interface, temporarily disabling the inserting of business, and business on +compute node A need move to the other available compute nodes. +4. When receives the VNFM reply, or waited for a timeout, Upgrade Manager +notifies the system support on compute node A to do software upgrade. +5. After upgraded, Upgrade Manager removes maintenance mode for the compute +node A. +6. Upgrade Manager claims VNFM computing nodes A available. +7. Select computer node B to upgrade \ No newline at end of file -- cgit 1.2.3-korg