Initialize kubeshark pinned eBPF resources inside init container (#1665)

* Clean kubeshark pinned bpf resources inside init container

* Clean kubeshark pinned bpf resources inside init container

* Update 09-worker-daemon-set.yaml

* add IPC_LOCK capability to sniffer

* add init container to mount bpf filesystem

* add init container to mount bpf filesystem

---------

Co-authored-by: Alon Girmonsky <1990761+alongir@users.noreply.github.com>

helm-chart/templates/09-worker-daemon-set.yaml

@@ -25,6 +25,39 @@ spec:
       name: kubeshark-worker-daemon-set
       namespace: kubeshark
     spec:
+      initContainers:
+        - command:
+          - /bin/sh
+          - -c
+          - mkdir -p /sys/fs/bpf && mount | grep -q '/sys/fs/bpf' || mount -t bpf bpf /sys/fs/bpf
+        {{- if .Values.tap.docker.overrideTag.worker }}
+          image: '{{ .Values.tap.docker.registry }}/worker:{{ .Values.tap.docker.overrideTag.worker }}{{ include "kubeshark.dockerTagDebugVersion" . }}'
+        {{ else }}
+          image: '{{ .Values.tap.docker.registry }}/worker:{{ not (eq .Values.tap.docker.tag "") | ternary .Values.tap.docker.tag (include "kubeshark.defaultVersion" .) }}{{ include "kubeshark.dockerTagDebugVersion" . }}'
+        {{- end }}
+          imagePullPolicy: {{ .Values.tap.docker.imagePullPolicy }}
+          name: check-bpf
+          securityContext:
+            privileged: true
+          volumeMounts:
+          - mountPath: /sys
+            name: sys
+            mountPropagation: Bidirectional
+        - command:
+          - ./tracer
+          - -init-bpf
+        {{- if .Values.tap.docker.overrideTag.worker }}
+          image: '{{ .Values.tap.docker.registry }}/worker:{{ .Values.tap.docker.overrideTag.worker }}{{ include "kubeshark.dockerTagDebugVersion" . }}'
+        {{ else }}
+          image: '{{ .Values.tap.docker.registry }}/worker:{{ not (eq .Values.tap.docker.tag "") | ternary .Values.tap.docker.tag (include "kubeshark.defaultVersion" .) }}{{ include "kubeshark.dockerTagDebugVersion" . }}'
+        {{- end }}
+          imagePullPolicy: {{ .Values.tap.docker.imagePullPolicy }}
+          name: init-bpf
+          securityContext:
+            privileged: true
+          volumeMounts:
+          - mountPath: /sys
+            name: sys
       containers:
         - command:
             - ./worker

helm-chart/values.yaml

@@ -121,6 +121,7 @@ tap:
     - SYS_ADMIN
     - SYS_PTRACE
     - DAC_OVERRIDE
+    - IPC_LOCK
     ebpfCapture:
     - SYS_ADMIN
     - SYS_PTRACE

manifests/complete.yaml

@@ -490,6 +490,31 @@ spec:
       name: kubeshark-worker-daemon-set
       namespace: kubeshark
     spec:
+      initContainers:
+        - command:
+          - /bin/sh
+          - -c
+          - mkdir -p /sys/fs/bpf && mount | grep -q '/sys/fs/bpf' || mount -t bpf bpf /sys/fs/bpf
+          image: 'docker.io/kubeshark/worker:v52.3.92'
+          imagePullPolicy: Always
+          name: check-bpf
+          securityContext:
+            privileged: true
+          volumeMounts:
+          - mountPath: /sys
+            name: sys
+            mountPropagation: Bidirectional
+        - command:
+          - ./tracer
+          - -init-bpf
+          image: 'docker.io/kubeshark/worker:v52.3.92'
+          imagePullPolicy: Always
+          name: init-bpf
+          securityContext:
+            privileged: true
+          volumeMounts:
+          - mountPath: /sys
+            name: sys
       containers:
         - command:
             - ./worker
@@ -559,6 +584,7 @@ spec:
                 - SYS_ADMIN
                 - SYS_PTRACE
                 - DAC_OVERRIDE
+                - IPC_LOCK
               drop:
                 - ALL
           readinessProbe: