we're suddenly a python thing :)

.project

@@ -5,7 +5,13 @@
 	<projects>
 	</projects>
 	<buildSpec>
+		<buildCommand>
+			<name>org.python.pydev.PyDevBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>org.python.pydev.pythonNature</nature>
 	</natures>
 </projectDescription>

.pydevproject

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<?eclipse-pydev version="1.0"?><pydev_project>
+    <pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
+    <pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python interpreter</pydev_property>
+</pydev_project>

_scripts/get_resources.py

@@ -0,0 +1,73 @@
+#!/usr/bin/python3
+import kubernetes as k8s
+
+from pint        import UnitRegistry
+from collections import defaultdict
+
+__all__ = ["compute_allocated_resources"]
+
+
+def compute_allocated_resources():
+    ureg = UnitRegistry()
+    ureg.load_definitions('kubernetes_units.txt')
+
+    Q_ = ureg.Quantity
+    data = {}
+
+    # doing this computation within a k8s cluster
+    k8s.config.load_kube_config()
+    core_v1 = k8s.client.CoreV1Api()
+    
+#     print("Listing pods with their IPs:")
+#     ret = core_v1.list_pod_for_all_namespaces(watch=False)
+#     for i in ret.items:
+#         print("%s\t%s\t%s" % (i.status.pod_ip, i.metadata.namespace, i.metadata.name))
+
+    for node in core_v1.list_node().items:
+        
+        stats = {}
+        node_name = node.metadata.name
+        allocatable = node.status.allocatable
+        max_pods = int(int(allocatable["pods"]) * 1.5)
+#         print("{} ALLOC: {} MAX_PODS: {}".format(node_name,allocatable,max_pods))
+        field_selector = ("status.phase!=Succeeded,status.phase!=Failed," + 
+                          "spec.nodeName=" + node_name)
+
+        stats["cpu_alloc"] = Q_(allocatable["cpu"])
+        stats["mem_alloc"] = Q_(allocatable["memory"])
+
+        pods = core_v1.list_pod_for_all_namespaces(limit=max_pods,
+                                                   field_selector=field_selector).items
+
+        # compute the allocated resources
+        cpureqs, cpulmts, memreqs, memlmts = [], [], [], []
+        for pod in pods:
+            for container in pod.spec.containers:
+                res = container.resources
+                reqs = defaultdict(lambda: 0, res.requests or {})
+                lmts = defaultdict(lambda: 0, res.limits or {})
+                cpureqs.append(Q_(reqs["cpu"]))
+                memreqs.append(Q_(reqs["memory"]))
+                cpulmts.append(Q_(lmts["cpu"]))
+                memlmts.append(Q_(lmts["memory"]))
+
+        stats["cpu_req"] = sum(cpureqs)
+        stats["cpu_lmt"] = sum(cpulmts)
+        stats["cpu_req_per"] = (stats["cpu_req"] / stats["cpu_alloc"] * 100)
+        stats["cpu_lmt_per"] = (stats["cpu_lmt"] / stats["cpu_alloc"] * 100)
+
+        stats["mem_req"] = sum(memreqs)
+        stats["mem_lmt"] = sum(memlmts)
+        stats["mem_req_per"] = (stats["mem_req"] / stats["mem_alloc"] * 100)
+        stats["mem_lmt_per"] = (stats["mem_lmt"] / stats["mem_alloc"] * 100)
+
+        data[node_name] = stats
+
+    return data
+
+if __name__ == "__main__":
+    # execute only if run as a script
+    print(compute_allocated_resources())
+    
+    
+    

_scripts/kubernetes_units.txt

@@ -0,0 +1,20 @@
+# memory units
+
+kmemunits = 1 = [kmemunits]
+Ki = 1024 * kmemunits
+Mi = Ki^2
+Gi = Ki^3
+Ti = Ki^4
+Pi = Ki^5
+Ei = Ki^6
+
+# cpu units
+
+kcpuunits = 1 = [kcpuunits]
+m = 1/1000 * kcpuunits
+k = 1000 * kcpuunits
+M = k^2
+G = k^3
+T = k^4
+P = k^5
+E = k^6

apps/gitea.yaml

@@ -1,3 +1,7 @@
+#we use postgresql:
+#create database gitea;
+#create user gitea with encrypted password 'secret';
+#grant all privileges on database gitea to gitea;
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -46,13 +50,13 @@ spec:
             httpGet:
               path: /
               port: http
-#           resources:
+          resources:
-#             requests:
+            requests:
-#               memory: "256Mi"
+              memory: "256Mi"
-#               cpu: "250m"
+              cpu: "250m"
-#             limits:
+            limits:
-#               memory: "1000Mi"
+              memory: "1000Mi"
-#               cpu: "500m"
+              cpu: "500m"
       volumes:
       - name: gitea
         persistentVolumeClaim:
@@ -78,14 +82,14 @@ metadata:
   name: gitea
   labels:
     app: gitea
-    release: latest
 spec:
+  type: LoadBalancer
   ports:
     - port: 3000
       targetPort: http
       protocol: TCP
       name: http
-    - port: 2222
+    - port: 22
       targetPort: 22
       name: ssh
   selector:
@@ -98,7 +102,7 @@ metadata:
     name: gitea
 spec:
     rules:
-    - host: git.lan
+    - host: git-ui.lan
       http:
           paths:
           - backend:

apps/postgresql/postgresql-deploy.yaml

@@ -0,0 +1,74 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+    env: live
+spec:
+  selector:
+    matchLabels:
+      app: postgres
+      env: live
+  serviceName: postgres-service
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: postgres
+        env: live
+    spec:
+      containers:
+      - name: postgres
+        image: postgres
+        volumeMounts:
+        - name: postgres-disk
+          mountPath: /var/lib/postgresql/data
+        env:
+        - name: POSTGRES_PASSWORD
+          value: pg2020
+        - name: PGDATA
+          value: /var/lib/postgresql/data/pgdata
+      volumes:
+      - name: postgres-disk
+        persistentVolumeClaim:
+          claimName: postgres
+#  volumeClaimTemplates:
+#  - metadata:
+#      name: postgres-disk
+#    spec:
+#      accessModes:
+#      - ReadWriteOnce
+#      resources:
+#        requests:
+#          storage: 10Gi
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+spec:
+  storageClassName: nfs-ssd
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 20Mi
+# service.yml
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres
+  labels:
+    app: postgres
+    env: live
+spec:
+  selector:
+    env: live
+  type: LoadBalancer
+  ports:
+  - port: 5432
+    targetPort: 5432