Core Info Handler

This API provides the same information displayed on the Dashboard.

Core information is available via:

http://localhost:8983/solr/<collection-name>/admin/info

The core key in the response is an object with these keys:

schema

Schema name.

host

Hostname. null if not available.

start

Core start time.

now

Current time on the core’s host.

directory

Object with directories relevant to the core.

Core Information API Examples

Retrieve core information from a node in cloud mode.

curl http://localhost:8983/solr/techproducts/admin/info
{
  "responseHeader":{
    "status":0,
    "QTime":9
  },
  "core":{
    "schema":"techprodducts",
    "now":"2026-01-31T17:47:54.199Z",
    "start":"2026-01-31T17:41:52.034Z",
    "directory":{
      "cwd":"/var/solr/server",
      "instance":"/var/solr/server/solr/techproducts_shard1_replica_n1",
      "data":"/var/solr/server/solr/techproducts_shard1_replica_n1/data",
      "dirimpl":"org.apache.solr.core.NRTCachingDirectoryFactory",
      "index":"/var/solr/server/solr/techproducts_shard1_replica_n1/data/index"
    }
  }
}

Retrieve system information from a core, without cloud mode.

curl http://localhost:8983/solr/gettingstarted/admin/system
{
  "responseHeader":{
    "status":0,
    "QTime":23},
  "core":{
    "schema":"default-config",
    "host":"fd7fbdff8b3e",
    "now":"2019-07-18T11:56:51.472Z",
    "start":"2019-07-18T11:54:52.509Z",
    "directory":{
      "cwd":"/opt/solr-8.1.1/server",
      "instance":"/var/solr/data/gettingstarted",
      "data":"/var/solr/data/gettingstarted/data",
      "dirimpl":"org.apache.solr.core.NRTCachingDirectoryFactory",
      "index":"/var/solr/data/gettingstarted/data/index"}},
  "mode":"std",
  "lucene":{
    "solr-spec-version":"8.1.1",
    "solr-impl-version":"8.1.1 fcbe46c28cef11bc058779afba09521de1b19bef - ab - 2019-05-22 15:20:01",
    "lucene-spec-version":"8.1.1",
    "lucene-impl-version":"8.1.1 fcbe46c28cef11bc058779afba09521de1b19bef - ab - 2019-05-22 15:15:24"},
  "jvm":{
    "version":"11.0.3 11.0.3+7",
    "name":"Oracle Corporation OpenJDK 64-Bit Server VM",
    "spec":{
      "vendor":"Oracle Corporation",
      "name":"Java Platform API Specification",
      "version":"11"},
    "jre":{
      "vendor":"Oracle Corporation",
      "version":"11.0.3"},
    "vm":{
      "vendor":"Oracle Corporation",
      "name":"OpenJDK 64-Bit Server VM",
      "version":"11.0.3+7"},
    "processors":4,
    "memory":{
      "free":"394.9 MB",
      "total":"512 MB",
      "max":"512 MB",
      "used":"117.1 MB (%22.9)",
      "raw":{
        "free":414074904,
        "total":536870912,
        "max":536870912,
        "used":122796008,
        "used%":22.87253886461258}},
    "jmx":{
      "classpath":"start.jar",
      "commandLineArgs":["-Xms512m",
        "-Xmx512m",
        "-XX:+UseG1GC",
        "-XX:+PerfDisableSharedMem",
        "-XX:+ParallelRefProcEnabled",
        "-XX:MaxGCPauseMillis=250",
        "-XX:+UseLargePages",
        "-XX:+AlwaysPreTouch",
        "-Xlog:gc*:file=/var/solr/logs/solr_gc.log:time,uptime:filecount=9,filesize=20M",
        "-Dcom.sun.management.jmxremote",
        "-Dcom.sun.management.jmxremote.local.only=false",
        "-Dcom.sun.management.jmxremote.ssl=false",
        "-Dcom.sun.management.jmxremote.authenticate=false",
        "-Dcom.sun.management.jmxremote.port=18983",
        "-Dcom.sun.management.jmxremote.rmi.port=18983",
        "-Dsolr.logs.dir=/var/solr/logs",
        "-Dsolr.port.listen=8983",
        "-DSTOP.PORT=7983",
        "-DSTOP.KEY=solrrocks",
        "-Duser.timezone=UTC",
        "-Djetty.home=/opt/solr/server",
        "-Dsolr.solr.home=/var/solr/data",
        "-Dsolr.data.home=",
        "-Dsolr.install.dir=/opt/solr",
        "-Dsolr.configset.default.confdir=/opt/solr/server/solr/configsets/_default/conf",
        "-Dlog4j.configurationFile=file:/var/solr/log4j2.xml",
        "-Xss256k",
        "-Dsolr.jetty.https.port=8983"],
      "startTime":"2019-07-16T05:52:16.213Z",
      "upTimeMS":194675370}},
  "system":{
    "name":"Linux",
    "arch":"amd64",
    "availableProcessors":4,
    "systemLoadAverage":0.88,
    "version":"4.9.0-9-amd64",
    "committedVirtualMemorySize":4306059264,
    "freePhysicalMemorySize":144179200,
    "freeSwapSpaceSize":11626409984,
    "processCpuLoad":0.0,
    "processCpuTime":557920000000,
    "systemCpuLoad":0.0,
    "totalPhysicalMemorySize":4005376000,
    "totalSwapSpaceSize":12884897792,
    "maxFileDescriptorCount":1048576,
    "openFileDescriptorCount":223,
    "uname":"Linux fd7fbdff8b3e 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u3 (2019-06-16) x86_64 GNU/Linux\n",
    "uptime":" 11:56:51 up 28 days, 23:00,  0 users,  load average: 0.88, 0.65, 0.62\n"}}