feat(k8s): mvp

k8s/DLU.Dockerfile

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+FROM gcc:12 AS build
+
+RUN --mount=type=cache,id=build-apt-cache,target=/var/cache/apt \
+    apt update && \
+    apt install -y libssl-dev libcurl4-openssl-dev uncrustify git cmake && \
+    rm -rf /var/lib/apt/lists/*
+
+WORKDIR /work
+RUN git clone https://libwebsockets.org/repo/libwebsockets --depth 1 --branch v4.2-stable
+RUN git clone https://github.com/yaml/libyaml --depth 1 --branch release/0.2.5
+
+WORKDIR /work/libwebsockets/build
+RUN cmake -DLWS_WITHOUT_TESTAPPS=ON -DLWS_WITHOUT_TEST_SERVER=ON -DLWS_WITHOUT_TEST_SERVER_EXTPOLL=ON \
+    -DLWS_WITHOUT_TEST_PING=ON -DLWS_WITHOUT_TEST_CLIENT=ON -DCMAKE_C_FLAGS="-fpic" -DCMAKE_INSTALL_PREFIX=/usr/local ..
+RUN make install
+
+WORKDIR /work/libyaml/build
+RUN cmake -DCMAKE_INSTALL_PREFIX=/usr/local -DBUILD_TESTING=OFF  -DBUILD_SHARED_LIBS=ON ..
+RUN make install
+
+COPY ../thirdparty/kubernetes-client-c/kubernetes /work/kubernetes-client-c/
+WORKDIR /work/kubernetes-client-c/build
+RUN cmake -DCMAKE_INSTALL_PREFIX=/usr/local ..
+RUN make install
+
+FROM debian:12
+
+RUN --mount=type=cache,id=build-apt-cache,target=/var/cache/apt \
+    apt update && \
+    apt install -y libssl3 libcurl4 && \
+    rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+COPY build/mariadbcpp/src/mariadb_connector_cpp-build/libmariadb/libmariadb/libmariadb.so.3 /usr/local/lib
+COPY --from=build /usr/local/lib/libkubernetes.so /usr/local/lib
+COPY --from=build /usr/local/lib/libyaml.so /usr/local/lib
+COPY --from=build /usr/local/lib/libwebsockets.so.18 /usr/local/lib
+COPY --from=build /usr/local/lib/libwebsockets.so /usr/local/lib
+COPY build/libmariadbcpp.so /usr/local/lib
+RUN ldconfig
+COPY build/MasterServerK8s /app/MasterServerK8s
+COPY build/MasterServer /app/MasterServer
+COPY build/AuthServer /app/AuthServer
+COPY build/ChatServer /app/ChatServer
+COPY build/WorldServer /app/WorldServer
+
+COPY build/migrations /app/migrations
+COPY build/navmeshes /app/navmeshes
+
+ENTRYPOINT ["/app/MasterServer"]

k8s/README.md

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+## Kubernetes Setup
+
+Debian
+```
+minikube start --driver kvm2
+minikube mount /path/to/client:/luclient
+```
+or
+```
+minikube start --mount --mount-options="ro" --mount-string="/path/to/client:/luclient"
+```
+
+Fish Shell
+```
+eval $(minikube -p minikube docker-env)
+```
+
+To Build
+```
+docker build -t ghcr.io/darkflameuniverse/darkflameserver -f ./k8s/DLU.Dockerfile .
+```
+
+Install
+```
+kubectl apply -k k8s
+```

k8s/common.env

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+EXTERNAL_IP=192.168.39.84
+MYSQL_HOST=mariadb-service
+MASTER_IP=master-service
+DLU_CONFIG_DIR=/app/config

k8s/darkflame.yml

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+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: master-server
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: pod-creator
+rules:
+- apiGroups: [""]
+  resources: ["pods"]
+  verbs: ["create", "update", "patch", "get", "watch", "list", "delete"]
+- apiGroups: [""]
+  resources: ["podtemplates"]
+  verbs: ["get", "watch", "list"]
+- apiGroups: ["apps"]
+  resources: ["daemonsets", "deployments"]
+  verbs: ["create", "update", "patch", "get", "watch", "list", "delete"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: master-server-pod-creator
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: pod-creator
+subjects:
+- kind: ServiceAccount
+  name: master-server
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: master-server-deployment
+  labels:
+    app: master-server
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: master-server
+  template:
+    metadata:
+      labels:
+        app: master-server
+    spec:
+      serviceAccountName: master-server
+      volumes:
+      - name: game-config
+        configMap:
+          name: game-config
+      - name: luclient
+        hostPath:
+          path: /luclient
+      - name: res-server
+        hostPath:
+          path: /resServer
+      containers:
+      - name: master-server
+        image: ghcr.io/darkflameuniverse/darkflameserver
+        imagePullPolicy: IfNotPresent
+        command: ["/app/MasterServerK8s"]
+        ports:
+        - containerPort: 2000
+          protocol: UDP
+          name: master
+        envFrom:
+        - configMapRef:
+            name: env-common
+        - secretRef:
+            name: db-secret
+          prefix: MYSQL_
+        volumeMounts:
+        - mountPath: "/app/res"
+          name: luclient
+        - mountPath: "/app/resServer"
+          name: res-server
+        - mountPath: "/app/config"
+          name: game-config
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: master-service
+spec:
+  selector:
+    app: master-server
+  ports:
+  - name: master
+    protocol: UDP
+    port: 2000
+    targetPort: master

k8s/kustomization.yml

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+resources:
+  - mariadb.yml
+  - ../resources
+  - ../vanity
+  - pod-template.yml
+  - darkflame.yml
+secretGenerator:
+- name: db-secret
+  literals:
+  - DATABASE=darkflame
+  - USER=darkflame # for MariaDB
+  - USERNAME=darkflame # for DLU
+  - PASSWORD=gjN@5#TTE&H&Yees5Q3a%tTC
+configMapGenerator:
+- name: env-common
+  envs:
+  - common.env

k8s/mariadb.yml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: pv0001
+spec:
+  storageClassName: manual
+  accessModes:
+    - ReadWriteOnce
+  capacity:
+    storage: 5Gi
+  hostPath:
+    path: /data/pv0001/
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: db-pv-claim
+spec:
+  storageClassName: manual
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 3Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mariadb-deployment
+  labels:
+    app: mariadb
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: mariadb
+  template:
+    metadata:
+      labels:
+        app: mariadb
+    spec:
+      volumes:
+      - name: db-pv-storage
+        persistentVolumeClaim:
+          claimName: db-pv-claim
+      containers:
+      - name: mariadb
+        image: mariadb:11
+        ports:
+        - containerPort: 3306
+          name: tcp-db-svc
+        envFrom:
+        - secretRef:
+            name: db-secret
+          prefix: MARIADB_
+        env:
+        - name: MARIADB_RANDOM_ROOT_PASSWORD
+          value: "1"
+        volumeMounts:
+        - mountPath: "/var/lib/mysql"
+          name: db-pv-storage
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: mariadb-service
+spec:
+  selector:
+    app: mariadb
+  ports:
+  - name: mariadb
+    protocol: TCP
+    port: 3306
+    targetPort: tcp-db-svc

k8s/pod-template.yml

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+apiVersion: v1
+kind: PodTemplate
+metadata:
+  name: pod-template
+template:
+  metadata:
+    labels:
+      app: darkflame-server
+  spec:
+    restartPolicy: OnFailure
+    volumes:
+    - name: game-config
+      configMap:
+        name: game-config
+    - name: vanity
+      configMap:
+        name: vanity
+    - name: luclient
+      hostPath:
+        path: /luclient
+    - name: res-server
+      hostPath:
+        path: /resServer
+    containers:
+    - name: darkflame-server
+      image: ghcr.io/darkflameuniverse/darkflameserver
+      imagePullPolicy: IfNotPresent
+      ports:
+      - containerPort: 3000
+        protocol: UDP
+        name: raknet
+      envFrom:
+      - configMapRef:
+          name: env-common
+      - secretRef:
+          name: db-secret
+        prefix: MYSQL_
+      volumeMounts:
+      - mountPath: "/app/res"
+        readOnly: true
+        name: luclient
+      - mountPath: "/app/resServer"
+        readOnly: true
+        name: res-server
+      - mountPath: "/app/config"
+        readOnly: true
+        name: game-config
+      - mountPath: "/app/vanity"
+        readOnly: true
+        name: vanity