cloudsim_k8s_launcher

cloudsim_k8s_launcher is responsible for creating and closing k8s resources containing unreal engine pixel streaming application in the cluster

Deploy for CloudSim

1. Edit the dockerfile to setup the environment variable (important)

• PORT - the port the launcher listen to(no need to change)
• HOST - the ip address of the host running the k8s cluster. The host runs the cloudsim_k8s_launcher.
• MONGO_IP - ip address of the mongodb for keeping world state data, usually the same host \
• MONGO_PORT - port of mongodb
• IMAGE_REPO - when launcher create the resource, it will pull images from the docker hub. This specify where to pull the image. Default: robcog or xiaojunll

2. Build the image

docker build -t robcog/cloudsim_k8s_launcher .
docker push robcog/cloudsim_k8s_launcher

3. Deploy the image, the launcher will listen to port 30002, you can change that in cloudsim_k8s_launcher.yaml

kubectl apply -f cloudsim_k8s_launcher.yaml

4. How to use the launcher Send HTTP POST request to the launcher with JSON data, one does not need to send post request directly, use the Prolog query in knowrob_ameva:

ag_create_clients(Num, LevelName, ClientId) 

once the launcher receives the request from knowrob_ameva, it will create an unreal engine application in k8s, and pass the ip address of knowrob, so the unreal engine application can connect to knowrob_ameva

JSON data:

{
	'KRServerPort' : xxx,             // it depends on the port  that knowrob listen to
	                                  // ue_start_src(Port) knowrob use this to specify port	                                      
	'KRProtocol' : 'kr_websocket',   // default, you can change the value in knowrob_ameva
	'LevelName' : xxxx                 // the image name of the unreal engine image, it is usually named with level name
}

PS: there is no need to pass the ip of the knowrob_ameva

5. configuration in knowrob_ameva in knowrob_ameva, ag_create_clients(Num, LevelName, ClientId) is used to post request to the launcher to create k8s resources. After deploying the launcher, one needs to configure the ip address and port of the launcher in ag_conn.cpp