System Info Handler

This API provides the same information displayed on the Dashboard.

System information is available via two different URLs:

http://localhost:8983/solr/admin/system

and

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

the only difference being populating the core key in the result.

The keys in the result are:

mode: Either solrcloud or std, indicating the mode Solr is running in
lucene: An object containing Solr and Lucene version information
jvm: An object containing information on the JVM
system: Information on the system.
solr_home: Solr base directory. Only available under /solr/admin/system.
zkHost: Zookeeper host, when running in cloud mode.
node: Node name, when running cloud mode.
core: An object containing basic information on the core, only present if the core/collection name is provided

Lucene and Solr Information Object

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

lucene-spec-version: The specification version of the Lucene package.
lucene-impl-version: The implementation version of the Lucene package.
solr-spec-version: The specification version of the Solr package.
solr-impl-version: The implementation version of the Solr package.

JVM Information Object

The jvm key in the response is an object with these keys and more:

version: JVM specification version.
name: Name of the JVM.
memory: An object containing memory usage information.

System Information Object

The system key in the response is an object with these keys and more:

name: Operating system name.
uname: The result of running uname -a. Not available on Windows.
uptime: The result of running uptime. Not available on Windows.

Core Information Object

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.

System Information API Examples

Retrieve system information from a node in cloud mode.

curl http://localhost:8983/solr/admin/info/system

{
  "responseHeader":{
    "status":0,
    "QTime":13},
  "mode":"solrcloud",
  "zkHost":"192.168.32.3:2181",
  "solr_home":"/var/solr/data",
  "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":"396 MB",
      "total":"512 MB",
      "max":"512 MB",
      "used":"116 MB (%22.7)",
      "raw":{
        "free":415213560,
        "total":536870912,
        "max":536870912,
        "used":121657352,
        "used%":22.660447657108307}},
    "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",
        "-DzkClientTimeout=15000",
        "-DzkHost=192.168.32.3:2181",
        "-Dsolr.log.dir=/var/solr/logs",
        "-Djetty.port=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.default.confdir=/opt/solr/server/solr/configsets/_default/conf",
        "-Dlog4j.configurationFile=file:/var/solr/log4j2.xml",
        "-Xss256k",
        "-Dsolr.jetty.https.port=8983"],
      "startTime":"2019-07-18T11:16:00.769Z",
      "upTimeMS":1339007}},
  "system":{
    "name":"Linux",
    "arch":"amd64",
    "availableProcessors":4,
    "systemLoadAverage":0.92,
    "version":"4.9.0-9-amd64",
    "committedVirtualMemorySize":4317540352,
    "freePhysicalMemorySize":117563392,
    "freeSwapSpaceSize":11583721472,
    "processCpuLoad":0.0,
    "processCpuTime":42690000000,
    "systemCpuLoad":0.0,
    "totalPhysicalMemorySize":4005376000,
    "totalSwapSpaceSize":12884897792,
    "maxFileDescriptorCount":1048576,
    "openFileDescriptorCount":225,
    "uname":"Linux f0281c6ee880 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1+deb9u3 (2019-06-16) x86_64 GNU/Linux\n",
    "uptime":" 11:38:19 up 28 days, 22:41,  0 users,  load average: 0.92, 0.57, 0.51\n"},
  "node":"172.17.0.4:8983_solr"}

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.log.dir=/var/solr/logs",
        "-Djetty.port=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.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"}}