Added support for couchdb v3.

CHANGELOG.next.asciidoc

@@ -57,6 +57,7 @@ https://github.com/elastic/beats/compare/v8.8.1\...main[Check the HEAD diff]
 - Add support of Graphite series 1.1.0+ tagging extension for statsd module. {pull}39619[39619]
 - Allow metricsets to report their status via control v2 protocol. {pull}40025[40025]
 - Remove fallback to the node limit for the `kubernetes.pod.cpu.usage.limit.pct` and `kubernetes.pod.memory.usage.limit.pct` metrics calculation
+- Add support for CouchDB v3 {issue}22743[22743] {pull}26950[26950]
 - Add support for Kibana status metricset in v8 format {pull}40275[40275]
 - Mark system process metricsets as running if metrics are partially available {pull}40565[40565]
 - Added back `elasticsearch.node.stats.jvm.mem.pools.*` to the `node_stats` metricset {pull}40571[40571]

metricbeat/docs/modules/couchdb.asciidoc

@@ -45,6 +45,8 @@ metricbeat.modules:
   metricsets: ["server"]
   period: 10s
   hosts: ["localhost:5984"]
+  username: "admin"
+  password: "password"
 ----
 
 This module supports TLS connections when using `ssl` config field, as described in <<configuration-ssl>>.

metricbeat/metricbeat.reference.yml

@@ -237,6 +237,8 @@ metricbeat.modules:
   metricsets: ["server"]
   period: 10s
   hosts: ["localhost:5984"]
+  username: "admin"
+  password: "password"
 
 #-------------------------------- Docker Module --------------------------------
 - module: docker

metricbeat/module/couchdb/_meta/Dockerfile

@@ -1,5 +1,6 @@
 ARG COUCHDB_VERSION
 FROM apache/couchdb:${COUCHDB_VERSION}
-COPY ./local.ini /etc/couchdb/local.ini
-EXPOSE 5984 
+
 HEALTHCHECK --interval=1s --retries=90 CMD curl -f http://localhost:5984/ | grep Welcome
+
+EXPOSE 5984

metricbeat/module/couchdb/_meta/config.yml

@@ -2,3 +2,5 @@
   metricsets: ["server"]
   period: 10s
   hosts: ["localhost:5984"]
+  username: "admin"
+  password: "password"

metricbeat/module/couchdb/_meta/supported-versions.yml

@@ -0,0 +1,4 @@
+variants:
+  - COUCHDB_VERSION: 1.7
+  - COUCHDB_VERSION: 2.3
+  - COUCHDB_VERSION: 3.1

metricbeat/module/couchdb/docker-compose.yml

@@ -1,4 +1,4 @@
-version: '2.3'
+version: "2.3"
 
 services:
   couchdb:
@@ -7,5 +7,8 @@ services:
       context: ./_meta
       args:
         COUCHDB_VERSION: ${COUCHDB_VERSION:-1.7}
+    environment:
+      COUCHDB_USER: admin
+      COUCHDB_PASSWORD: password
     ports:
       - 5984

metricbeat/module/couchdb/server/server.go

@@ -127,11 +127,13 @@
 		m.fetcher = &V1{}
 	case 2:
 		m.fetcher = &V2{}
+	case 3:
+		m.fetcher = &V3{}
 	default:
 		m.fetcher = nil
 	}
 
 	return
 }
 
 // CommonInfo defines the data you receive when you make a GET request to the root path of a Couchdb server
@@ -155,7 +157,7 @@
 		return nil, fmt.Errorf("error using host parser: %w", err)
 	}
 
 	res, err := c.Get(hostdata.URI)
 	if err != nil {
 		return nil, fmt.Errorf("error trying to do GET request to couchdb: %w", err)
 	}

metricbeat/module/couchdb/server/v3.go

@@ -0,0 +1,22 @@
+// Licensed to Elasticsearch B.V. under one or more contributor
+// license agreements. See the NOTICE file distributed with
+// this work for additional information regarding copyright
+// ownership. Elasticsearch B.V. licenses this file to you under
+// the Apache License, Version 2.0 (the "License"); you may
+// not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package server
+
+type V3 struct {
+	V2
+}

metricbeat/modules.d/couchdb.yml.disabled

@@ -5,3 +5,5 @@
   metricsets: ["server"]
   period: 10s
   hosts: ["localhost:5984"]
+  username: "admin"
+  password: "password"

x-pack/metricbeat/metricbeat.reference.yml

@@ -482,6 +482,8 @@ metricbeat.modules:
   metricsets: ["server"]
   period: 10s
   hosts: ["localhost:5984"]
+  username: "admin"
+  password: "password"
 
 #-------------------------------- Docker Module --------------------------------
 - module: docker