feat: cadvisor - options to enable\disable metrics and docker-only mode

Signed-off-by: Oleg Klyuchkin <anviar@users.noreply.github.com>

roles/cadvisor/defaults/main.yml

@@ -9,6 +9,10 @@ cadvisor_listen_ip: "0.0.0.0"
 cadvisor_port: "8080"
 cadvisor_prometheus_endpoint: "/metrics"
 
+cadvisor_enable_metrics: []
+cadvisor_disable_metrics: []
+cadvisor_docker_only: false
+
 cadvisor_binary_install_dir: "/usr/local/bin"
 cadvisor_system_group: "root"
 cadvisor_system_user: "{{ cadvisor_system_group }}"

roles/cadvisor/meta/argument_specs.yml

@@ -32,6 +32,42 @@ argument_specs:
       cadvisor_prometheus_endpoint:
         description: "Path under which to expose metrics"
         default: "/metrics"
+      cadvisor_disable_metrics:
+        description: 
+          - "comma-separated list of metrics to be disabled"
+          - "(default advtcp,cpu_topology,cpuset,hugetlb,memory_numa,process,referenced_memory,resctrl,sched,tcp,udp)"
+        type: "list"
+        default: []
+        choices: &metrics_choices
+          - advtcp
+          - app
+          - cpu
+          - cpuLoad
+          - cpu_topology
+          - cpuset
+          - disk
+          - diskIO
+          - hugetlb
+          - memory
+          - memory_numa
+          - network
+          - oom_event
+          - percpu
+          - perf_event
+          - process
+          - referenced_memory
+          - resctrl
+          - sched
+          - tcp
+      cadvisor_enable_metrics:
+        description: "comma-separated list of metrics to be enabled. If set, overrides 'cadvisor_disable_metrics'"
+        default: []
+        type: "list"
+        choices: *metrics_choices
+      cadvisor_docker_only:
+        description: "do not report raw cgroup metrics, except the root cgroup"
+        type: "bool"
+        default: false
       cadvisor_binary_install_dir:
         description:
           - "I(Advanced)"

roles/cadvisor/templates/cadvisor.service.j2

@@ -9,6 +9,15 @@ Type=simple
 User={{ cadvisor_system_user }}
 Group={{ cadvisor_system_group }}
 ExecStart={{ cadvisor_binary_install_dir }}/cadvisor \
+{% if cadvisor_disable_metrics | length > 0 %}
+    '--disable_metrics={{ cadvisor_disable_metrics | join(',') }}' \
+{% endif -%}
+{% if cadvisor_enable_metrics | length > 0 %}
+    '--enable_metrics={{ cadvisor_enable_metrics | join(',') }}' \
+{% endif -%}
+{% if cadvisor_docker_only %}
+    '--docker_only={{ cadvisor_docker_only | lower }}' \
+{% endif -%}
     '--listen_ip={{ cadvisor_listen_ip }}' \
     '--port={{ cadvisor_port }}' \
     '--prometheus_endpoint={{ cadvisor_prometheus_endpoint }}'