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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. (c) by Yingjun Li (HUAWEI) and Harry Huang (HUAWEI)
+
+Opera Installation Instructions
+===============================
+
+This document providing guidelines on how to deploy a working Open-O
+environment using opera project.
+
+The audience of this document is assumed to have good knowledge in
+OpenStack and Linux.
+
+
+Preconditions
+-------------
+
+There are some preconditions before starting the Opera deployment
+
+
+A functional OpenStack environment
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+OpenStack should be deployed before opera deploy.
+
+Getting the deployment scripts
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Retrieve the repository of Opera using the following command:
+
+- git clone https://gerrit.opnfv.org/gerrit/opera
+
+
+Machine requirements
+--------------------
+
+1.     Ubuntu OS (Pre-installed).
+
+2.     Root access.
+
+3.     Minimum 1 NIC (internet access)
+
+4.     CPU cores: 32
+
+5.     64 GB free memory
+
+6.     100G free disk
+
+
+Deploy Instruction
+------------------
+
+After opera deployment, Open-O dockers will be launched on local
+server as orchestrator and juju vm will be launched on OpenStack
+as VNFM.
+
+Add OpenStack Admin Openrc file
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Add the admin openrc file of your local openstack into opera/conf
+directory with the name of admin-openrc.sh.
+
+Config open-o.yml
+~~~~~~~~~~~~~~~~~
+
+Set openo_version to specify Open-O version.
+
+Set openo_ip to specify an external ip to access Open-O services.
+(leave the value unset will use local server's external ip)
+
+Set ports in openo_docker_net to specify Open-O's exposed service
+ports.
+
+Set enable_sdno to specify if use Open-O 's sdno services.
+(set this value false will not launch Open-O sdno dockers and reduce
+deploy duration)
+
+Set vnf_type to specify the vnf type need to be deployed.
+(currently only support clearwater deployment, leave this unset will
+not deploy any vnf)
+
+Run opera_launch.sh
+~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: bash
+
+    ./opera_launch.sh
+