This feature adds a new RPC backend for communication between
sysinv-api, sysinv-conductor and sysinv-agent processes.
This backend is implemented using a patched zerorpc library [1],
which is built on top of ZeroMQ and message-pack.
The motivation behind this change is to decouple sysinv from RabbitMQ,
and use a brokerless solution for RPC instead.
The key points are:
- All imports of rpcapi.py are replaced by rpcapiproxy.py, which
decides the backend to use (rabbitmq or zeromq) according to
configuration.
- During an upgrade process the rpc service listens to both rabbitmq
and zeromq. For communication between hosts, the client backend api
is chosen according to host software version.
- In future versions, the usage of RabbitMQ will no longer be
necessary and its usage can be removed. I have marked these parts of
code with "TODO(RPCHybridMode)" to easily track it.
[1] https://review.opendev.org/c/starlingx/integ/+/864310
TEST PLAN:
PASS: Bootstrap and host-unlock on AIO-SX, AIO-Duplex, Standard
PASS: Bootstrap and host-unlock on DC system-controller and subcloud
PASS: Verify sysinv.log and confirm no error occurs in RPC communication
PASS: Perform system cli commands that interacts with sysinv RPCs:
- system host-cpu-max-frequency-modify
- system license-install
- system storage-backend-add ceph-external
- system host-swact
PASS: Backup & Restore on AIO-SX
PASS: Bootstrap replay (updating mgmt and cluster subnet) on AIO-SX
PASS: Platform upgrade on AIO-DX (22.06 -> 22.12)
PASS: Platform upgrade on AIO-DX+ (22.06 -> 22.12)
PASS: Platform upgrade on AIO-SX (22.06 -> 22.12)
Depends-On: https://review.opendev.org/c/starlingx/tools/+/859576
Depends-On: https://review.opendev.org/c/starlingx/stx-puppet/+/859575
Depends-On: https://review.opendev.org/c/starlingx/ansible-playbooks/+/862609
Story: 2010087
Task: 46444
Change-Id: I5cd61b541a6d8c62628a0f99db0e35af1eae5961
Signed-off-by: Alyson Deives Pereira <alyson.deivespereira@windriver.com>
Signed-off-by: Eduardo Juliano Alberti <eduardo.alberti@windriver.com>
c6a41c20a9