This is a monitoring system give us the ability of monitoring latency between Kubernetes Nodes. Metrics then is exported to Prometheus with metrics latency_between_nodes

Kubernetes Nodes need to be labeled

chmod +x label.sh
./label.sh add # add labels
./label.sh delete # delete labels

Agents are deployed in each nodes by 3 Pod manifest (instead of DaemonSet, I think the reason is our colaborator is so lazy). Pod's manifests are rendered automatically. Let's take a quick look in file render.sh

...
#####CONFIG HERE#####
N_NODES=3 # number of node in Kubernetes Cluster, once again, our colaborator is so lazy
SLEEP=2 # agents will sent ICMP packet to each other every 2 seconds
#####################
...

After configuring two above constant, let's render Pods' manifests

chmod +x render.sh
./render.sh

A new file named manifest/monlat-agents.yaml has been created!

Rebuild image of monlat component if you need. Let's take a quick view in src/build.sh. Then, rebuild image if you need.

cd src
vi build.sh
...
#####CONFIG HERE#####
HUB="bonavadeur" # docker.io/$HUB/$NAME:$TAG
TAG="latest"
NAME="monlat"
#####################
...

chmod +x build.sh
./build.sh image # build from Golang code to Docker image
./build.sh push # push Docker image to Docker Hub
cd ..

Specify image you use to run monlat and specified Nodes you want to deploy it in Deployment in file manifest/monlat.yaml

kubectl apply -f manifest/rbac.yaml
kubectl apply -f manifest/monlat-agents.yaml
kubectl apply -f manifest/monlat.yaml

Assume that Your Kubernetes run Prometheus before. Metrics are updated to prometheus immediately with metrics latency_between_nodes.

My colaborators who write this system is chungtd203338. His original code is monitor-delay-nodes-k8s