ZOOKEEPER-5029: Port unification for PrometheusMetricsProvider

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[PDavid]

Testing

Tested this locally as follows:

Created keystore:

keytool -genkeypair -alias zkAdmin -keyalg RSA -keysize 2048 \
  -dname "CN=your.server.com" -validity 365 \
  -keystore keystore.jks -storepass password -keypass password

Created truststore:

# Export the cert
keytool -export -alias zkAdmin -file zkAdmin.crt \
  -keystore keystore.jks -storepass password

# Import into truststore
keytool -import -alias zkAdmin -file zkAdmin.crt \
  -keystore truststore.jks -storepass password -noprompt

Added these to zoo.cfg:

...
metricsProvider.className=org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
metricsProvider.httpPort=7000
metricsProvider.httpsPort=7000
metricsProvider.ssl.keyStore.location=keystore.jks
metricsProvider.ssl.keyStore.password=password
metricsProvider.ssl.trustStore.location=truststore.jks
metricsProvider.ssl.trustStore.password=password
metricsProvider.ssl.need.client.auth=false

Started ZooKeeper:

mvn clean install -DskipTests && bin/zkServer.sh start

ZooKeeper log:

...
2026-03-19 16:52:27,546 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@167] - Reading configuration from: /home/david/projects/upstream/zookeeper/bin/../conf/zoo.cfg
2026-03-19 16:52:27,550 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@434] - clientPortAddress is 0.0.0.0:2181
2026-03-19 16:52:27,551 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@438] - secureClientPort is not set
2026-03-19 16:52:27,551 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@454] - observerMasterPort is not set
2026-03-19 16:52:27,551 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@471] - metricsProvider.className is org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
2026-03-19 16:52:27,552 [myid:] - INFO  [main:o.a.z.s.DatadirCleanupManager@78] - autopurge.snapRetainCount set to 3
2026-03-19 16:52:27,552 [myid:] - INFO  [main:o.a.z.s.DatadirCleanupManager@79] - autopurge.purgeInterval set to 0
2026-03-19 16:52:27,552 [myid:] - INFO  [main:o.a.z.s.DatadirCleanupManager@101] - Purge task is not scheduled.
2026-03-19 16:52:27,553 [myid:] - WARN  [main:o.a.z.s.q.QuorumPeerMain@139] - Either no config or no quorum defined in config, running in standalone mode
2026-03-19 16:52:27,553 [myid:] - INFO  [main:o.a.z.j.ManagedUtil@46] - Log4j 1.2 jmx support not found; jmx disabled.
2026-03-19 16:52:27,554 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@167] - Reading configuration from: /home/david/projects/upstream/zookeeper/bin/../conf/zoo.cfg
2026-03-19 16:52:27,554 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@434] - clientPortAddress is 0.0.0.0:2181
2026-03-19 16:52:27,554 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@438] - secureClientPort is not set
2026-03-19 16:52:27,554 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@454] - observerMasterPort is not set
2026-03-19 16:52:27,554 [myid:] - INFO  [main:o.a.z.s.q.QuorumPeerConfig@471] - metricsProvider.className is org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider
2026-03-19 16:52:27,554 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServerMain@122] - Starting server
2026-03-19 16:52:27,559 [myid:] - INFO  [main:o.a.z.m.p.PrometheusMetricsProvider@123] - Initializing Prometheus metrics with Jetty, configuration: {httpsPort=7000, ssl.keyStore.location=keystore.jks, ssl.trustStore.location=keystore.jks, ssl.keyStore.password=password, ssl.trustStore.password=password, ssl.need.client.auth=false, httpPort=7000, ssl.enabledProtocols=TLSv1.2,TLSv1.3, ssl.ciphersuites=TLS_AES_128_GCM_SHA256,TLS_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384}
2026-03-19 16:52:27,587 [myid:] - INFO  [main:o.a.z.m.p.PrometheusMetricsProvider@161] - Starting Prometheus Jetty server...
2026-03-19 16:52:27,592 [myid:] - INFO  [main:o.e.j.u.l.Log@170] - Logging initialized @313ms to org.eclipse.jetty.util.log.Slf4jLog
2026-03-19 16:52:27,645 [myid:] - INFO  [main:o.e.j.s.Server@375] - jetty-9.4.58.v20250814; built: 2025-08-14T02:28:49.637Z; git: 8f1440587e9e4ae7db3d74cf205643f3d707148d; jvm 1.8.0_422-b05
2026-03-19 16:52:27,662 [myid:] - INFO  [main:o.e.j.s.h.ContextHandler@921] - Started o.e.j.s.ServletContextHandler@2d1ef81a{/,null,AVAILABLE}
2026-03-19 16:52:27,759 [myid:] - INFO  [main:o.e.j.u.s.SslContextFactory@358] - x509=X509@4c39bec8(zkadmin,h=[your.server.com],a=[],w=[]) for Server@1f59a598[provider=null,keyStore=file:///home/david/projects/upstream/zookeeper/keystore.jks,trustStore=file:///home/david/projects/upstream/zookeeper/keystore.jks]
2026-03-19 16:52:27,799 [myid:] - INFO  [main:o.e.j.s.AbstractConnector@333] - Started ServerConnector@3835c46{SSL, (ssl, http/1.1)}{0.0.0.0:7000}
2026-03-19 16:52:27,799 [myid:] - INFO  [main:o.e.j.s.Server@415] - Started @521ms
2026-03-19 16:52:27,799 [myid:] - INFO  [main:o.a.z.m.p.PrometheusMetricsProvider@223] - Prometheus metrics provider with Jetty started. HTTP port: 7000, HTTPS port: 7000
2026-03-19 16:52:27,805 [myid:] - INFO  [main:o.a.z.s.ServerMetrics@64] - ServerMetrics initialized with provider org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider@68e965f5
2026-03-19 16:52:27,813 [myid:] - INFO  [main:o.a.z.s.a.DigestAuthenticationProvider@51] - ACL digest algorithm is: SHA1
2026-03-19 16:52:27,814 [myid:] - INFO  [main:o.a.z.s.a.DigestAuthenticationProvider@65] - zookeeper.DigestAuthenticationProvider.enabled = true
2026-03-19 16:52:27,815 [myid:] - INFO  [main:o.a.z.s.p.FileTxnSnapLog@124] - zookeeper.snapshot.trust.empty : false
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] - 
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -   ______                  _                                          
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -  |___  /                 | |                                         
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -     / /    ___     ___   | | __   ___    ___   _ __     ___   _ __   
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -    / /    / _ \   / _ \  | |/ /  / _ \  / _ \ | '_ \   / _ \ | '__|
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -   / /__  | (_) | | (_) | |   <  |  __/ |  __/ | |_) | |  __/ | |    
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -  /_____|  \___/   \___/  |_|\_\  \___|  \___| | .__/   \___| |_|
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -                                               | |                     
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] -                                               |_|                     
2026-03-19 16:52:27,820 [myid:] - INFO  [main:o.a.z.ZookeeperBanner@42] - 
2026-03-19 16:52:27,821 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:zookeeper.version=3.10.0-SNAPSHOT-9dcea1921e24a1065bc7d56e2c13056da36d6ad5-dirty, built on 2026-03-19 15:52 UTC
2026-03-19 16:52:27,821 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:host.name=paksyd-5680-ubuntu
2026-03-19 16:52:27,821 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:java.version=1.8.0_422
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:java.vendor=Temurin
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:java.home=/home/david/.sdkman/candidates/java/8.0.422-tem/jre
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:java.class.path=/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/classes:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/classes:/home/david/projects/upstream/zookeeper/bin/../build/classes:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/zookeeper-jute-3.10.0-SNAPSHOT.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/zookeeper-3.10.0-SNAPSHOT.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/slf4j-api-2.0.13.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-tracer-otel-agent-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-tracer-otel-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-tracer-initializer-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-tracer-common-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-model-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-instrumentation-jvm-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exposition-textformats-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exposition-formats-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exporter-servlet-javax-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exporter-httpserver-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exporter-common-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-core-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-config-1.3.10.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/opentest4j-1.2.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/objenesis-3.3.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-native-unix-common-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-native-epoll-4.1.130.Final-linux-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-classes-epoll-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-classes-2.0.74.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-windows-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-aarch_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-aarch_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-resolver-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-handler-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-common-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-codec-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-buffer-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/mockito-core-4.9.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/logback-core-1.3.15.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/logback-classic-1.3.15.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-suite-api-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-runner-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-launcher-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-engine-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-commons-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-jupiter-engine-5.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-jupiter-api-5.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-4.13.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-util-ajax-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-util-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-servlet-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-server-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-security-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-io-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-http-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/javax.servlet-api-3.1.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/hamcrest-core-1.3.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/dnsjava-3.5.1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/commons-io-2.17.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/byte-buddy-agent-1.12.16.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/byte-buddy-1.12.16.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/audience-annotations-0.12.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/apiguardian-api-1.1.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/zookeeper-jute-3.10.0-SNAPSHOT.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/tools-0.25.4.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/token-provider-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/spotbugs-annotations-4.0.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/snappy-java-1.1.10.5.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/slf4j-api-2.0.13.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/opentest4j-1.2.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/objenesis-3.3.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/nimbus-jose-jwt-4.41.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-native-unix-common-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-native-epoll-4.1.130.Final-linux-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-classes-epoll-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-classes-2.0.74.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-windows-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-aarch_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-x86_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-aarch_64.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-resolver-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-handler-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-common-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-codec-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/netty-buffer-4.1.130.Final.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/mockito-inline-4.9.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/mockito-core-4.9.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/metrics-core-4.1.12.1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/logback-core-1.3.15.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/logback-classic-1.3.15.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerby-xdr-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerby-util-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerby-pkix-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerby-config-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerby-asn1-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-util-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-simplekdc-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-server-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-identity-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-crypto-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-core-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-common-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-client-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/kerb-admin-2.0.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jvm-driver-9.4.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jvm-driver-8.14.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-suite-api-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-runner-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-launcher-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-engine-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-commons-1.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-jupiter-params-5.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-jupiter-engine-5.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-jupiter-api-5.6.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/junit-4.13.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jsr305-3.0.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/json-smart-2.3.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jmockit-1.48.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jline-3.25.1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-util-ajax-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-util-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-servlet-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-server-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-security-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-io-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-http-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jetty-client-9.4.58.v20250814.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jcip-annotations-1.0-1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/javax.servlet-api-3.1.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jackson-databind-2.18.1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jackson-core-2.18.1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/jackson-annotations-2.18.1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/hamcrest-library-2.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/hamcrest-core-2.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/hamcrest-2.2.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/dnsjava-3.5.1.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/core-12.62.5.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/commons-io-2.17.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/commons-collections4-4.4.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/commons-cli-1.5.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/byte-buddy-agent-1.12.16.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/byte-buddy-1.12.16.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/bcutil-jdk18on-1.78.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/bcprov-jdk18on-1.78.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/bcpkix-jdk18on-1.78.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/audience-annotations-0.12.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/asm-5.0.4.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/apiguardian-api-1.1.0.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/target/lib/accessors-smart-1.2.jar:/home/david/projects/upstream/zookeeper/bin/../build/lib/*.jar:/home/david/projects/upstream/zookeeper/bin/../lib/*.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-*.jar:/home/david/projects/upstream/zookeeper/bin/../zookeeper-server/src/main/resources/lib/*.jar:/home/david/projects/upstream/zookeeper/bin/../conf:
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:java.io.tmpdir=/tmp
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:java.compiler=<NA>
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:os.name=Linux
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:os.arch=amd64
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:os.version=6.17.0-19-generic
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:user.name=david
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:user.home=/home/david
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:user.dir=/home/david/projects/upstream/zookeeper
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:jvm.memory.free=858MB
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:jvm.memory.max=958MB
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.Environment@98] - Server environment:jvm.memory.total=958MB
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@151] - zookeeper.enableEagerACLCheck = false
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@164] - zookeeper.digest.enabled = true
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@168] - zookeeper.closeSessionTxn.enabled = true
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@2237] - zookeeper.serializeLastProcessedZxid.enabled = true
2026-03-19 16:52:27,822 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@1585] - zookeeper.flushDelay = 0 ms
2026-03-19 16:52:27,823 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@1594] - zookeeper.maxWriteQueuePollTime = 0 ms
2026-03-19 16:52:27,823 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@1603] - zookeeper.maxBatchSize=1000
2026-03-19 16:52:27,823 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@289] - zookeeper.intBufferStartingSizeBytes = 1024
2026-03-19 16:52:27,823 [myid:] - INFO  [main:o.a.z.s.BlueThrottle@141] - Weighed connection throttling is disabled
2026-03-19 16:52:27,824 [myid:] - INFO  [main:o.a.z.s.AuthenticationHelper@66] - zookeeper.enforce.auth.enabled = false
2026-03-19 16:52:27,824 [myid:] - INFO  [main:o.a.z.s.AuthenticationHelper@67] - zookeeper.enforce.auth.schemes = []
2026-03-19 16:52:27,824 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@1395] - minSessionTimeout set to 4000 ms
2026-03-19 16:52:27,824 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@1404] - maxSessionTimeout set to 40000 ms
2026-03-19 16:52:27,825 [myid:] - INFO  [main:o.a.z.s.ResponseCache@50] - getData response cache size is initialized with value 400.
2026-03-19 16:52:27,825 [myid:] - INFO  [main:o.a.z.s.ResponseCache@50] - getChildren response cache size is initialized with value 400.
2026-03-19 16:52:27,826 [myid:] - INFO  [main:o.a.z.s.u.RequestPathMetricsCollector@109] - zookeeper.pathStats.slotCapacity = 60
2026-03-19 16:52:27,826 [myid:] - INFO  [main:o.a.z.s.u.RequestPathMetricsCollector@110] - zookeeper.pathStats.slotDuration = 15
2026-03-19 16:52:27,826 [myid:] - INFO  [main:o.a.z.s.u.RequestPathMetricsCollector@111] - zookeeper.pathStats.maxDepth = 6
2026-03-19 16:52:27,826 [myid:] - INFO  [main:o.a.z.s.u.RequestPathMetricsCollector@112] - zookeeper.pathStats.initialDelay = 5
2026-03-19 16:52:27,826 [myid:] - INFO  [main:o.a.z.s.u.RequestPathMetricsCollector@113] - zookeeper.pathStats.delay = 5
2026-03-19 16:52:27,826 [myid:] - INFO  [main:o.a.z.s.u.RequestPathMetricsCollector@114] - zookeeper.pathStats.enabled = false
2026-03-19 16:52:27,827 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@1622] - The max bytes for all large requests are set to 104857600
2026-03-19 16:52:27,827 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@1636] - The large request threshold is set to -1
2026-03-19 16:52:27,827 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@387] - Created server with tickTime 2000 ms minSessionTimeout 4000 ms maxSessionTimeout 40000 ms clientPortListenBacklog -1 dataLogdir /tmp/zookeeper/version-2 snapdir /tmp/zookeeper/version-2
2026-03-19 16:52:27,829 [myid:] - INFO  [main:o.a.z.c.X509Util@85] - Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation
2026-03-19 16:52:27,855 [myid:] - INFO  [main:o.a.z.c.X509Util@109] - Default TLS protocol is TLSv1.3, supported TLS protocols are [TLSv1.3, TLSv1.2, TLSv1.1, TLSv1, SSLv3, SSLv2Hello]
2026-03-19 16:52:27,890 [myid:] - INFO  [main:o.a.z.s.a.JettyAdminServer@143] - Successfully loaded private key from keystore.jks
2026-03-19 16:52:27,890 [myid:] - INFO  [main:o.a.z.s.a.JettyAdminServer@144] - Successfully loaded certificate authority from truststore.jks
2026-03-19 16:52:27,893 [myid:] - WARN  [main:o.e.j.s.h.ContextHandler@1662] - o.e.j.s.ServletContextHandler@696da30b{/,null,STOPPED} contextPath ends with /*
2026-03-19 16:52:27,893 [myid:] - WARN  [main:o.e.j.s.h.ContextHandler@1673] - Empty contextPath
2026-03-19 16:52:27,898 [myid:] - INFO  [main:o.e.j.s.Server@375] - jetty-9.4.58.v20250814; built: 2025-08-14T02:28:49.637Z; git: 8f1440587e9e4ae7db3d74cf205643f3d707148d; jvm 1.8.0_422-b05
2026-03-19 16:52:27,901 [myid:] - INFO  [main:o.e.j.s.s.DefaultSessionIdManager@334] - DefaultSessionIdManager workerName=node0
2026-03-19 16:52:27,901 [myid:] - INFO  [main:o.e.j.s.s.DefaultSessionIdManager@339] - No SessionScavenger set, using defaults
2026-03-19 16:52:27,902 [myid:] - INFO  [main:o.e.j.s.s.HouseKeeper@132] - node0 Scavenging every 660000ms
2026-03-19 16:52:27,904 [myid:] - WARN  [main:o.e.j.s.ConstraintSecurityHandler@759] - ServletContext@o.e.j.s.ServletContextHandler@696da30b{/,null,STARTING} has uncovered http methods for path: /*
2026-03-19 16:52:27,905 [myid:] - INFO  [main:o.e.j.s.h.ContextHandler@921] - Started o.e.j.s.ServletContextHandler@696da30b{/,null,AVAILABLE}
2026-03-19 16:52:27,905 [myid:] - INFO  [main:o.e.j.u.s.SslContextFactory@358] - x509=X509@6f46426d(zkadmin,h=[your.server.com],a=[],w=[]) for Server@73700b80[provider=null,keyStore=null,trustStore=null]
2026-03-19 16:52:27,922 [myid:] - INFO  [main:o.e.j.s.AbstractConnector@333] - Started ServerConnector@2e222612{SSL, (ssl, http/1.1)}{0.0.0.0:8080}
2026-03-19 16:52:27,922 [myid:] - INFO  [main:o.e.j.s.Server@415] - Started @643ms
2026-03-19 16:52:27,922 [myid:] - INFO  [main:o.a.z.s.a.JettyAdminServer@201] - Started AdminServer on address 0.0.0.0, port 8080 and command URL /commands
2026-03-19 16:52:27,924 [myid:] - INFO  [main:o.a.z.s.ServerCnxnFactory@172] - Using org.apache.zookeeper.server.NIOServerCnxnFactory as server connection factory
2026-03-19 16:52:27,925 [myid:] - WARN  [main:o.a.z.s.ServerCnxnFactory@337] - maxCnxns is not configured, using default value 0.
2026-03-19 16:52:27,926 [myid:] - INFO  [main:o.a.z.s.NIOServerCnxnFactory@652] - Configuring NIO connection handler with 10s sessionless connection timeout, 3 selector thread(s), 40 worker threads, and 64 kB direct buffers.
2026-03-19 16:52:27,927 [myid:] - INFO  [main:o.a.z.s.NIOServerCnxnFactory@660] - binding to port 0.0.0.0/0.0.0.0:2181
2026-03-19 16:52:27,934 [myid:] - INFO  [main:o.a.z.s.w.WatchManagerFactory@42] - Using org.apache.zookeeper.server.watch.WatchManager as watch manager
2026-03-19 16:52:27,934 [myid:] - INFO  [main:o.a.z.s.w.WatchManagerFactory@42] - Using org.apache.zookeeper.server.watch.WatchManager as watch manager
2026-03-19 16:52:27,934 [myid:] - INFO  [main:o.a.z.s.ZKDatabase@137] - zookeeper.snapshotSizeFactor = 0.33
2026-03-19 16:52:27,934 [myid:] - INFO  [main:o.a.z.s.ZKDatabase@157] - zookeeper.commitLogCount=500
2026-03-19 16:52:27,936 [myid:] - INFO  [main:o.a.z.s.p.SnapStream@61] - zookeeper.snapshot.compression.method = CHECKED
2026-03-19 16:52:27,936 [myid:] - INFO  [main:o.a.z.s.p.FileSnap@86] - Reading snapshot /tmp/zookeeper/version-2/snapshot.0
2026-03-19 16:52:27,938 [myid:] - INFO  [main:o.a.z.s.DataTree@1706] - The digest value is empty in snapshot
2026-03-19 16:52:27,949 [myid:] - INFO  [main:o.a.z.s.p.FileTxnSnapLog@372] - 15 txns loaded in 5 ms
2026-03-19 16:52:27,949 [myid:] - INFO  [main:o.a.z.s.ZKDatabase@294] - Snapshot loaded in 15 ms, highest zxid is 0xf, digest is 2901938155
2026-03-19 16:52:27,950 [myid:] - INFO  [main:o.a.z.s.p.FileTxnSnapLog@480] - Snapshotting: 0xf to /tmp/zookeeper/version-2/snapshot.f
2026-03-19 16:52:27,951 [myid:] - INFO  [main:o.a.z.s.ZooKeeperServer@588] - Snapshot taken in 1 ms
2026-03-19 16:52:27,983 [myid:] - INFO  [main:o.a.z.s.RequestThrottler@75] - zookeeper.request_throttler.shutdownTimeout = 10000 ms
2026-03-19 16:52:27,983 [myid:] - INFO  [ProcessThread(sid:0 cport:2181)::o.a.z.s.PrepRequestProcessor@135] - PrepRequestProcessor (sid:0) started, reconfigEnabled=false
2026-03-19 16:52:27,991 [myid:] - INFO  [main:o.a.z.s.ContainerManager@97] - Using checkIntervalMs=60000 maxPerMinute=10000 maxNeverUsedIntervalMs=300000
2026-03-19 16:52:27,992 [myid:] - INFO  [main:o.a.z.a.ZKAuditProvider@42] - ZooKeeper audit is disabled.

Call PrometheusMetricsProvider using http:

curl -k -v http://localhost:7000/metrics       
* Host localhost:7000 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:7000...
* Connected to localhost (::1) port 7000
* using HTTP/1.x
> GET /metrics HTTP/1.1
> Host: localhost:7000
> User-Agent: curl/8.15.0
> Accept: */*
> 
* Request completely sent off
< HTTP/1.1 200 OK
< Date: Thu, 19 Mar 2026 15:53:44 GMT
< Content-Type: text/plain; version=0.0.4; charset=utf-8
< Content-Length: 38880
< Server: Jetty(9.4.58.v20250814)
< 
# HELP add_dead_watcher_stall_time_total add_dead_watcher_stall_time counter
# TYPE add_dead_watcher_stall_time_total counter
add_dead_watcher_stall_time_total 0.0
# HELP approximate_data_size approximate_data_size
# TYPE approximate_data_size gauge
approximate_data_size 44.0
# HELP auth_failed_count auth_failed_count
# TYPE auth_failed_count gauge
auth_failed_count 0.0
# HELP avg_latency avg_latency
# TYPE avg_latency gauge
avg_latency 0.0
# HELP bytes_received_count_total bytes_received_count counter
# TYPE bytes_received_count_total counter
bytes_received_count_total 0.0
# HELP close_session_prep_time close_session_prep_time summary
# TYPE close_session_prep_time summary
close_session_prep_time{quantile="0.5"} NaN
close_session_prep_time{quantile="0.95"} NaN
close_session_prep_time{quantile="0.99"} NaN
close_session_prep_time_count 0
close_session_prep_time_sum 0.0
...
write_per_namespace_sum{key="acl_auth_test"} 28.0
# HELP znode_count znode_count
# TYPE znode_count gauge
znode_count 5.0
* Connection #0 to host localhost left intact

Call PrometheusMetricsProvider using https:

curl -k -v https://localhost:7000/metrics      
* Host localhost:7000 was resolved.
* IPv6: ::1
* IPv4: 127.0.0.1
*   Trying [::1]:7000...
* ALPN: curl offers h2,http/1.1
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Request CERT (13):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS handshake, Certificate (11):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384 / secp256r1 / RSASSA-PSS
* ALPN: server did not agree on a protocol. Uses default.
* Server certificate:
*  subject: CN=your.server.com
*  start date: Mar 10 12:58:28 2026 GMT
*  expire date: Mar 10 12:58:28 2027 GMT
*  issuer: CN=your.server.com
*  SSL certificate verify result: self-signed certificate (18), continuing anyway.
*   Certificate level 0: Public key type RSA (2048/112 Bits/secBits), signed using sha256WithRSAEncryption
* Connected to localhost (::1) port 7000
* using HTTP/1.x
> GET /metrics HTTP/1.1
> Host: localhost:7000
> User-Agent: curl/8.15.0
> Accept: */*
> 
* Request completely sent off
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
< HTTP/1.1 200 OK
< Date: Thu, 19 Mar 2026 15:54:49 GMT
< Strict-Transport-Security: max-age=86400; includeSubDomains
< Content-Type: text/plain; version=0.0.4; charset=utf-8
< Content-Length: 38884
< Server: Jetty(9.4.58.v20250814)
< 
# HELP add_dead_watcher_stall_time_total add_dead_watcher_stall_time counter
# TYPE add_dead_watcher_stall_time_total counter
add_dead_watcher_stall_time_total 0.0
# HELP approximate_data_size approximate_data_size
# TYPE approximate_data_size gauge
approximate_data_size 44.0
# HELP auth_failed_count auth_failed_count
# TYPE auth_failed_count gauge
auth_failed_count 0.0
...
# HELP write_per_namespace write_per_namespace summary
# TYPE write_per_namespace summary
write_per_namespace{key="acl_auth_test",quantile="0.5"} 14.0
write_per_namespace_count{key="acl_auth_test"} 2
write_per_namespace_sum{key="acl_auth_test"} 28.0
# HELP znode_count znode_count
# TYPE znode_count gauge
znode_count 5.0
* Connection #0 to host localhost left intact