diff --git a/.eslintrc.js b/.eslintrc.js
index 6d399e195a252..082fe77774e52 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -183,12 +183,6 @@ module.exports = {
         'react-hooks/exhaustive-deps': 'off',
       },
     },
-    {
-      files: ['x-pack/legacy/plugins/monitoring/**/*.{js,ts,tsx}'],
-      rules: {
-        'jsx-a11y/click-events-have-key-events': 'off',
-      },
-    },
     {
       files: ['x-pack/legacy/plugins/snapshot_restore/**/*.{js,ts,tsx}'],
       rules: {
@@ -827,21 +821,6 @@ module.exports = {
       },
     },
 
-    /**
-     * Monitoring overrides
-     */
-    {
-      files: ['x-pack/legacy/plugins/monitoring/**/*.js'],
-      rules: {
-        'no-unused-vars': ['error', { args: 'all', argsIgnorePattern: '^_' }],
-        'no-else-return': 'error',
-      },
-    },
-    {
-      files: ['x-pack/legacy/plugins/monitoring/public/**/*.js'],
-      env: { browser: true },
-    },
-
     /**
      * Canvas overrides
      */
diff --git a/x-pack/legacy/plugins/monitoring/index.js b/x-pack/legacy/plugins/monitoring/index.js
index 4d2ab3a9a06e5..37003ca058a63 100644
--- a/x-pack/legacy/plugins/monitoring/index.js
+++ b/x-pack/legacy/plugins/monitoring/index.js
@@ -22,7 +22,7 @@ export const monitoring = kibana =>
     id: 'monitoring',
     configPrefix: 'xpack.monitoring',
     publicDir: resolve(__dirname, 'public'),
-    init(server, _options) {
+    init(server) {
       const configs = [
         'xpack.monitoring.ui.enabled',
         'xpack.monitoring.kibana.collection.enabled',
diff --git a/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.js b/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.js
index c3ca241c73cc0..5c9cddf9c2902 100644
--- a/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.js
+++ b/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.js
@@ -46,7 +46,7 @@ export class ChartTarget extends React.Component {
         return seriesToShow.some(id => id.toLowerCase() === metric.id.toLowerCase());
       };
     }
-    return _metric => true;
+    return () => true;
   }
 
   UNSAFE_componentWillReceiveProps(newProps) {
diff --git a/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.test.js b/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.test.js
index bf0d5fdd24879..56eb52fa86235 100644
--- a/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.test.js
+++ b/x-pack/legacy/plugins/monitoring/public/components/chart/chart_target.test.js
@@ -38,8 +38,8 @@ const props = {
     max: 1562962539851,
   },
   hasLegend: true,
-  onBrush: _ => void 0,
-  tickFormatter: _ => void 0,
+  onBrush: () => void 0,
+  tickFormatter: () => void 0,
   updateLegend: () => void 0,
 };
 
diff --git a/x-pack/legacy/plugins/monitoring/public/components/elasticsearch/shard_allocation/components/assigned.js b/x-pack/legacy/plugins/monitoring/public/components/elasticsearch/shard_allocation/components/assigned.js
index 012bc81135e34..897c20edc3f74 100644
--- a/x-pack/legacy/plugins/monitoring/public/components/elasticsearch/shard_allocation/components/assigned.js
+++ b/x-pack/legacy/plugins/monitoring/public/components/elasticsearch/shard_allocation/components/assigned.js
@@ -46,6 +46,8 @@ export class Assigned extends React.Component {
 
     // TODO: redesign for shard allocation, possibly giving shard display the
     // ability to use the euiLink CSS class (blue link text instead of white link text)
+    // Disabling eslint because EuiKeyboardAccessible does it for us
+    /* eslint-disable jsx-a11y/click-events-have-key-events */
     const name = (
       <EuiKeyboardAccessible>
         <a onClick={changeUrl}>
@@ -53,6 +55,7 @@ export class Assigned extends React.Component {
         </a>
       </EuiKeyboardAccessible>
     );
+    /* eslint-enable jsx-a11y/click-events-have-key-events */
     const master =
       data.node_type === 'master' ? <EuiIcon type="starFilledSpace" color="primary" /> : null;
     const shards = sortBy(data.children, 'shard').map(this.createShard);
diff --git a/x-pack/legacy/plugins/monitoring/public/components/logstash/pipeline_viewer/views/detail_drawer.js b/x-pack/legacy/plugins/monitoring/public/components/logstash/pipeline_viewer/views/detail_drawer.js
index cd9fe5229b640..73faa81af7b55 100644
--- a/x-pack/legacy/plugins/monitoring/public/components/logstash/pipeline_viewer/views/detail_drawer.js
+++ b/x-pack/legacy/plugins/monitoring/public/components/logstash/pipeline_viewer/views/detail_drawer.js
@@ -164,7 +164,7 @@ function renderPluginBasicStats(vertex, timeseriesTooltipXValueFormatter) {
   );
 }
 
-function renderIfBasicStats(_vertex) {
+function renderIfBasicStats() {
   return (
     <p>
       <FormattedMessage
@@ -175,7 +175,7 @@ function renderIfBasicStats(_vertex) {
   );
 }
 
-function renderQueueBasicStats(_vertex) {
+function renderQueueBasicStats() {
   return (
     <p>
       <FormattedMessage
@@ -253,7 +253,7 @@ function renderIfBasicInfo(vertex) {
   );
 }
 
-function renderQueueBasicInfo(_vertex) {
+function renderQueueBasicInfo() {
   return (
     <p>
       <FormattedMessage
diff --git a/x-pack/legacy/plugins/monitoring/public/services/executor_provider.js b/x-pack/legacy/plugins/monitoring/public/services/executor_provider.js
index cb176917ff025..b2192496ed272 100644
--- a/x-pack/legacy/plugins/monitoring/public/services/executor_provider.js
+++ b/x-pack/legacy/plugins/monitoring/public/services/executor_provider.js
@@ -72,7 +72,7 @@ export function executorProvider(Promise, $timeout) {
     ).finally(reset);
   }
 
-  function reFetch(_changes) {
+  function reFetch() {
     cancel();
     run();
   }
diff --git a/x-pack/legacy/plugins/monitoring/public/views/elasticsearch/nodes/index.js b/x-pack/legacy/plugins/monitoring/public/views/elasticsearch/nodes/index.js
index 4b3c961b15583..d201e2cc8b5e9 100644
--- a/x-pack/legacy/plugins/monitoring/public/views/elasticsearch/nodes/index.js
+++ b/x-pack/legacy/plugins/monitoring/public/views/elasticsearch/nodes/index.js
@@ -39,6 +39,7 @@ uiRoutes.when('/elasticsearch/nodes', {
         }) || {};
 
       const getPageData = ($injector, _api = undefined, routeOptions = {}) => {
+        _api; // to fix eslint
         const $http = $injector.get('$http');
         const globalState = $injector.get('globalState');
         const timeBounds = timefilter.getBounds();
diff --git a/x-pack/legacy/plugins/monitoring/public/views/logstash/node/pipelines/index.js b/x-pack/legacy/plugins/monitoring/public/views/logstash/node/pipelines/index.js
index bc5ac75931fce..7bfcddf8f283a 100644
--- a/x-pack/legacy/plugins/monitoring/public/views/logstash/node/pipelines/index.js
+++ b/x-pack/legacy/plugins/monitoring/public/views/logstash/node/pipelines/index.js
@@ -23,6 +23,7 @@ import { DetailStatus } from '../../../../components/logstash/detail_status';
 import { CODE_PATH_LOGSTASH } from '../../../../../common/constants';
 
 const getPageData = ($injector, _api = undefined, routeOptions = {}) => {
+  _api; // fixing eslint
   const $route = $injector.get('$route');
   const $http = $injector.get('$http');
   const globalState = $injector.get('globalState');
diff --git a/x-pack/legacy/plugins/monitoring/public/views/logstash/pipelines/index.js b/x-pack/legacy/plugins/monitoring/public/views/logstash/pipelines/index.js
index ce49fc2fac97b..03cf7383d1d02 100644
--- a/x-pack/legacy/plugins/monitoring/public/views/logstash/pipelines/index.js
+++ b/x-pack/legacy/plugins/monitoring/public/views/logstash/pipelines/index.js
@@ -23,6 +23,7 @@ import { CODE_PATH_LOGSTASH } from '../../../../common/constants';
  */
 
 const getPageData = ($injector, _api = undefined, routeOptions = {}) => {
+  _api; // to fix eslint
   const $http = $injector.get('$http');
   const globalState = $injector.get('globalState');
   const Private = $injector.get('Private');
diff --git a/x-pack/legacy/plugins/monitoring/server/cloud/cloud_service.js b/x-pack/legacy/plugins/monitoring/server/cloud/cloud_service.js
index dcc8ad8fc8b64..2a408f5295aef 100644
--- a/x-pack/legacy/plugins/monitoring/server/cloud/cloud_service.js
+++ b/x-pack/legacy/plugins/monitoring/server/cloud/cloud_service.js
@@ -48,7 +48,7 @@ export class CloudService {
    * @param {Object} _request 'request' HTTP handler.
    * @return {Promise} Never {@code null} {@code CloudServiceResponse}.
    */
-  _checkIfService(_request) {
+  _checkIfService() {
     return Promise.reject(new Error('not implemented'));
   }
 
diff --git a/x-pack/legacy/plugins/monitoring/server/lib/metrics/elasticsearch/classes.js b/x-pack/legacy/plugins/monitoring/server/lib/metrics/elasticsearch/classes.js
index 755b89a0409d0..d3a43ed651827 100644
--- a/x-pack/legacy/plugins/monitoring/server/lib/metrics/elasticsearch/classes.js
+++ b/x-pack/legacy/plugins/monitoring/server/lib/metrics/elasticsearch/classes.js
@@ -116,7 +116,7 @@ export class LatencyMetric extends ElasticsearchMetric {
       },
     };
 
-    this.calculation = (bucket, _key, _metric, _bucketSizeInSeconds) => {
+    this.calculation = bucket => {
       const timeInMillisDeriv = _.get(bucket, 'event_time_in_millis_deriv.normalized_value', null);
       const totalEventsDeriv = _.get(bucket, 'event_total_deriv.normalized_value', null);
 
diff --git a/x-pack/legacy/plugins/monitoring/server/lib/metrics/logstash/classes.js b/x-pack/legacy/plugins/monitoring/server/lib/metrics/logstash/classes.js
index c76edf9061396..eddcfabe83b1b 100644
--- a/x-pack/legacy/plugins/monitoring/server/lib/metrics/logstash/classes.js
+++ b/x-pack/legacy/plugins/monitoring/server/lib/metrics/logstash/classes.js
@@ -90,7 +90,7 @@ export class LogstashEventsLatencyClusterMetric extends LogstashClusterMetric {
       },
     };
 
-    this.calculation = (bucket, _key, _metric, _bucketSizeInSeconds) => {
+    this.calculation = bucket => {
       const timeInMillisDeriv = _.get(bucket, 'events_time_in_millis_deriv.normalized_value', null);
       const totalEventsDeriv = _.get(bucket, 'events_total_deriv.normalized_value', null);
 
@@ -189,7 +189,7 @@ export class LogstashEventsLatencyMetric extends LogstashMetric {
       },
     };
 
-    this.calculation = (bucket, _key, _metric, _bucketSizeInSeconds) => {
+    this.calculation = bucket => {
       const timeInMillisDeriv = _.get(bucket, 'events_time_in_millis_deriv.normalized_value', null);
       const totalEventsDeriv = _.get(bucket, 'events_total_deriv.normalized_value', null);