Remove Filesystem check metrics that use too much CPU to handle requests

app/services/metrics_service.rb

@@ -6,8 +6,7 @@ class MetricsService
     Gitlab::HealthChecks::Redis::RedisCheck,
     Gitlab::HealthChecks::Redis::CacheCheck,
     Gitlab::HealthChecks::Redis::QueuesCheck,
-    Gitlab::HealthChecks::Redis::SharedStateCheck,
-    Gitlab::HealthChecks::FsShardsCheck
+    Gitlab::HealthChecks::Redis::SharedStateCheck
   ].freeze
 
   def prometheus_metrics_text

changelogs/unreleased/pawel-disable_nfs_metrics_checks_39730.yml

+---
+title: Remove Filesystem check metrics that use too much CPU to handle requests
+merge_request:
+author:
+type: performance

spec/controllers/metrics_controller_spec.rb

@@ -59,17 +59,6 @@ describe MetricsController do
         expect(response.body).to match(/^redis_shared_state_ping_latency_seconds [0-9\.]+$/)
       end
 
-      it 'returns file system check metrics' do
-        get :index
-
-        expect(response.body).to match(/^filesystem_access_latency_seconds{shard="default"} [0-9\.]+$/)
-        expect(response.body).to match(/^filesystem_accessible{shard="default"} 1$/)
-        expect(response.body).to match(/^filesystem_write_latency_seconds{shard="default"} [0-9\.]+$/)
-        expect(response.body).to match(/^filesystem_writable{shard="default"} 1$/)
-        expect(response.body).to match(/^filesystem_read_latency_seconds{shard="default"} [0-9\.]+$/)
-        expect(response.body).to match(/^filesystem_readable{shard="default"} 1$/)
-      end
-
       context 'prometheus metrics are disabled' do
         before do
           allow(Gitlab::Metrics).to receive(:prometheus_metrics_enabled?).and_return(false)