说明：基于环境mesos+marathon+docker+prometheus+grafana监控tomcat
一、配置环境
(1)dockerfile
from tomcat
COPY tomcat-users.xml /usr/local/tomcat/conf/
COPY server.xml /usr/local/tomcat/conf/
COPY context.xml /usr/local/tomcat/webapps/manager/META-INF/
COPY catalina.sh /usr/local/tomcat/bin/
COPY jmx_prometheus_javaagent-0.2.0.jar catalina.sh /usr/local/tomcat/
COPY config.yaml /usr/local/tomcat/
RUN mkdir /usr/local/tomcat/webapps/docker
COPY health.jsp /usr/local/tomcat/webapps/docker/health.jsp
ENV LANG C.UTF-8
RUN rm -rf /usr/local/tomcat/webapps/ROOT && rm -rf /usr/local/tomcat/webapps/docs && rm -rf /usr/local/tomcat/webapps/examples && rm -rf /usr/local/tomcat/webapps/host-manager && rm -rf /usr/local/tomcat/webapps/manager
EXPOSE 8080 1234
注释：基于tomcat8官方镜像，对于server.xml，tomcat-users.xml，context.xm自己配置
(2)catalina.sh
增加：JAVA_OPTS="$JAVA_OPTS -Duser.timezone=GMT+08 -javaagent:$PWD/jmx_prometheus_javaagent-0.2.0.jar=1234:$PWD/config.yaml -Djava.protocol.handler.pkgs=org.apache.catalina.webresources"
(3)创建docker镜像
docker build -t 192.168.10.81:5000/tomcat8:mytest .
二、prometheus配置
(1)添加监控
- job_name: tomcat
static_configs:
- targets: [‘192.168.10.81:5032‘]
labels:
instance: mytest说明： - targets: [‘192.168.10.81:5032‘] IP为创建虚拟机的mesos-slaveIP，端口为marathon-lb的端口
三、验证
curl http://192.168.10.81:5032/metrics#HELP jmx_config_reload_failure_total Number of times configuration have failed to be reloaded.
#TYPE jmx_config_reload_failure_total counter
jmx_config_reload_failure_total 0.0
#HELP jvm_memory_bytes_used Used bytes of a given JVM memory area.
#TYPE jvm_memory_bytes_used gauge
jvm_memory_bytes_used{area="heap",} 6.60999448E8
jvm_memory_bytes_used{area="nonheap",} 2.8583308E8
#HELP jvm_memory_bytes_committed Committed (bytes) of a given JVM memory area.
#TYPE jvm_memory_bytes_committed gauge
jvm_memory_bytes_committed{area="heap",} 8.45676544E8
jvm_memory_bytes_committed{area="nonheap",} 3.04611328E8
#HELP jvm_memory_bytes_max Max (bytes) of a given JVM memory area.
#TYPE jvm_memory_bytes_max gauge
jvm_memory_bytes_max{area="heap",} 2.14695936E9
jvm_memory_bytes_max{area="nonheap",} -1.0
#HELP jvm_memory_pool_bytes_used Used bytes of a given JVM memory pool.
#TYPE jvm_memory_pool_bytes_used gauge
jvm_memory_pool_bytes_used{pool="Code Cache",} 8.7307776E7
jvm_memory_pool_bytes_used{pool="Metaspace",} 1.7892812E8
jvm_memory_pool_bytes_used{pool="Compressed Class Space",} 1.9597184E7
jvm_memory_pool_bytes_used{pool="PS Eden Space",} 130976.0
jvm_memory_pool_bytes_used{pool="PS Survivor Space",} 131072.0
jvm_memory_pool_bytes_used{pool="PS Old Gen",} 6.607374E8
#HELP jvm_memory_pool_bytes_committed Committed bytes of a given JVM memory pool.
#TYPE jvm_memory_pool_bytes_committed gauge
jvm_memory_pool_bytes_committed{pool="Code Cache",} 9.4633984E7
jvm_memory_pool_bytes_committed{pool="Metaspace",} 1.87957248E8
jvm_memory_pool_bytes_committed{pool="Compressed Class Space",} 2.2020096E7
jvm_memory_pool_bytes_committed{pool="PS Eden Space",} 524288.0
jvm_memory_pool_bytes_committed{pool="PS Survivor Space",} 524288.0
jvm_memory_pool_bytes_committed{pool="PS Old Gen",} 8.44627968E8
#HELP jvm_memory_pool_bytes_max Max bytes of a given JVM memory pool.
#TYPE jvm_memory_pool_bytes_max gauge
jvm_memory_pool_bytes_max{pool="Code Cache",} 2.5165824E8
jvm_memory_pool_bytes_max{pool="Metaspace",} -1.0
jvm_memory_pool_bytes_max{pool="Compressed Class Space",} 1.073741824E9
jvm_memory_pool_bytes_max{pool="PS Eden Space",} 524288.0
jvm_memory_pool_bytes_max{pool="PS Survivor Space",} 524288.0
jvm_memory_pool_bytes_max{pool="PS Old Gen",} 2.145910784E9
#HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.
#TYPE process_cpu_seconds_total counter
process_cpu_seconds_total 242475.12
#HELP process_start_time_seconds Start time of the process since unix epoch in seconds.
#TYPE process_start_time_seconds gauge
process_start_time_seconds 1.518703782033E9
#HELP process_open_fds Number of open file descriptors.
#TYPE process_open_fds gauge
process_open_fds 112.0
#HELP process_max_fds Maximum number of open file descriptors.
#TYPE process_max_fds gauge
process_max_fds 1048576.0
#HELP process_virtual_memory_bytes Virtual memory size in bytes.
#TYPE process_virtual_memory_bytes gauge
process_virtual_memory_bytes 1.0415075328E10
#HELP process_resident_memory_bytes Resident memory size in bytes.
#TYPE process_resident_memory_bytes gauge
process_resident_memory_bytes 1.464459264E9
#HELP jvm_threads_current Current thread count of a JVM
#TYPE jvm_threads_current gauge
jvm_threads_current 95.0
#HELP jvm_threads_daemon Daemon thread count of a JVM
#TYPE jvm_threads_daemon gauge
jvm_threads_daemon 92.0
#HELP jvm_threads_peak Peak thread count of a JVM
#TYPE jvm_threads_peak gauge
jvm_threads_peak 136.0
#HELP jvm_threads_started_total Started thread count of a JVM
#TYPE jvm_threads_started_total counter
jvm_threads_started_total 1583.0
#HELP jvm_threads_deadlocked Cycles of JVM-threads that are in deadlock waiting to acquire object monitors or ownable synchronizers
#TYPE jvm_threads_deadlocked gauge
jvm_threads_deadlocked 0.0
#HELP jvm_threads_deadlocked_monitor Cycles of JVM-threads that are in deadlock waiting to acquire object monitors
#TYPE jvm_threads_deadlocked_monitor gauge
jvm_threads_deadlocked_monitor 0.0
#HELP jvm_classes_loaded The number of classes that are currently loaded in the JVM
#TYPE jvm_classes_loaded gauge
jvm_classes_loaded 27069.0
#HELP jvm_classes_loaded_total The total number of classes that have been loaded since the JVM has started execution
#TYPE jvm_classes_loaded_total counter
jvm_classes_loaded_total 33493.0
#HELP jvm_classes_unloaded_total The total number of classes that have been unloaded since the JVM has started execution
#TYPE jvm_classes_unloaded_total counter
jvm_classes_unloaded_total 6424.0
#HELP jvm_info JVM version info
#TYPE jvm_info gauge
jvm_info{version="1.8.0_151-8u151-b12-1~deb9u1-b12",vendor="Oracle Corporation",} 1.0
#HELP tomcat_bytesreceived_total Tomcat global bytesReceived
#TYPE tomcat_bytesreceived_total counter
tomcat_bytesreceived_total{port="8080",protocol="http-nio",} 4799.0
tomcat_bytesreceived_total{port="8009",protocol="ajp-nio",} 0.0
#HELP tomcat_errorcount_total Tomcat global errorCount
#TYPE tomcat_errorcount_total counter
tomcat_errorcount_total{port="8080",protocol="http-nio",} 0.0
tomcat_errorcount_total{port="8009",protocol="ajp-nio",} 0.0
#HELP tomcat_requestcount_total Tomcat global requestCount
#TYPE tomcat_requestcount_total counter
tomcat_requestcount_total{port="8080",protocol="http-nio",} 74407.0
tomcat_requestcount_total{port="8009",protocol="ajp-nio",} 0.0
#HELP tomcat_session_sessioncounter_total Tomcat session sessionCounter total
#TYPE tomcat_session_sessioncounter_total counter
tomcat_session_sessioncounter_total{context="/supercode",host="localhost",} 0.0
tomcat_session_sessioncounter_total{context="/docker",host="localhost",} 60463.0
tomcat_session_sessioncounter_total{context="/",host="localhost",} 9526.0
#HELP tomcat_threadpool_pollerthreadcount Tomcat threadpool pollerThreadCount
#TYPE tomcat_threadpool_pollerthreadcount gauge
tomcat_threadpool_pollerthreadcount{port="8009",protocol="ajp-nio",} 2.0
tomcat_threadpool_pollerthreadcount{port="8080",protocol="http-nio",} 2.0
#HELP tomcat_session_rejectedsessions_total Tomcat session rejectedSessions total
#TYPE tomcat_session_rejectedsessions_total counter
tomcat_session_rejectedsessions_total{context="/supercode",host="localhost",} 0.0
tomcat_session_rejectedsessions_total{context="/docker",host="localhost",} 0.0
tomcat_session_rejectedsessions_total{context="/",host="localhost",} 0.0
#HELP tomcat_session_expiredsessions_total Tomcat session expiredSessions total
#TYPE tomcat_session_expiredsessions_total counter
tomcat_session_expiredsessions_total{context="/supercode",host="localhost",} 0.0
tomcat_session_expiredsessions_total{context="/docker",host="localhost",} 60341.0
tomcat_session_expiredsessions_total{context="/",host="localhost",} 9487.0
#HELP tomcat_session_processingtime_total Tomcat session processingTime total
#TYPE tomcat_session_processingtime_total counter
tomcat_session_processingtime_total{context="/supercode",host="localhost",} 61.0
tomcat_session_processingtime_total{context="/docker",host="localhost",} 2382.0
tomcat_session_processingtime_total{context="/",host="localhost",} 467.0
#HELP tomcat_maxtime_total Tomcat global maxTime
#TYPE tomcat_maxtime_total counter
tomcat_maxtime_total{port="8080",protocol="http-nio",} 10850.0
tomcat_maxtime_total{port="8009",protocol="ajp-nio",} 0.0
#HELP tomcat_servlet_processingtime_total Tomcat servlet processingTime total
#TYPE tomcat_servlet_processingtime_total counter
tomcat_servlet_processingtime_total{module="localhost/supercode",servlet="grailsDispatcherServlet",} 110025.0
tomcat_servlet_processingtime_total{module="localhost/docker",servlet="default",} 0.0
tomcat_servlet_processingtime_total{module="localhost/supercode",servlet="default",} 0.0
tomcat_servlet_processingtime_total{module="localhost/docker",servlet="jsp",} 250431.0
tomcat_servlet_processingtime_total{module="localhost/",servlet="default",} 0.0
tomcat_servlet_processingtime_total{module="localhost/",servlet="grailsDispatcherServlet",} 550705.0
tomcat_servlet_processingtime_total{module="localhost/",servlet="groovyPagesServlet",} 0.0
tomcat_servlet_processingtime_total{module="localhost/",servlet="jsp",} 0.0
tomcat_servlet_processingtime_total{module="localhost/supercode",servlet="jsp",} 0.0
tomcat_servlet_processingtime_total{module="localhost/supercode",servlet="groovyPagesServlet",} 0.0
#HELP tomcat_threadpool_connectioncount Tomcat threadpool connectionCount
#TYPE tomcat_threadpool_connectioncount gauge
tomcat_threadpool_connectioncount{port="8009",protocol="ajp-nio",} 1.0
tomcat_threadpool_connectioncount{port="8080",protocol="http-nio",} 1.0
#HELP tomcat_bytessent_total Tomcat global bytesSent
#TYPE tomcat_bytessent_total counter
tomcat_bytessent_total{port="8080",protocol="http-nio",} 3413490.0
tomcat_bytessent_total{port="8009",protocol="ajp-nio",} 0.0
#HELP tomcat_servlet_errorcount_total Tomcat servlet errorCount total
#TYPE tomcat_servlet_errorcount_total counter
tomcat_servlet_errorcount_total{module="localhost/supercode",servlet="grailsDispatcherServlet",} 0.0
tomcat_servlet_errorcount_total{module="localhost/docker",servlet="default",} 0.0
tomcat_servlet_errorcount_total{module="localhost/supercode",servlet="default",} 0.0
tomcat_servlet_errorcount_total{module="localhost/docker",servlet="jsp",} 0.0
tomcat_servlet_errorcount_total{module="localhost/",servlet="default",} 0.0
tomcat_servlet_errorcount_total{module="localhost/",servlet="grailsDispatcherServlet",} 0.0
tomcat_servlet_errorcount_total{module="localhost/",servlet="groovyPagesServlet",} 0.0
tomcat_servlet_errorcount_total{module="localhost/",servlet="jsp",} 0.0
tomcat_servlet_errorcount_total{module="localhost/supercode",servlet="jsp",} 0.0
tomcat_servlet_errorcount_total{module="localhost/supercode",servlet="groovyPagesServlet",} 0.0
#HELP tomcat_servlet_maxtime_total Tomcat servlet maxTime total
#TYPE tomcat_servlet_maxtime_total counter
tomcat_servlet_maxtime_total{module="localhost/supercode",servlet="grailsDispatcherServlet",} 10850.0
tomcat_servlet_maxtime_total{module="localhost/docker",servlet="default",} 0.0
tomcat_servlet_maxtime_total{module="localhost/supercode",servlet="default",} 0.0
tomcat_servlet_maxtime_total{module="localhost/docker",servlet="jsp",} 4425.0
tomcat_servlet_maxtime_total{module="localhost/",servlet="default",} 0.0
tomcat_servlet_maxtime_total{module="localhost/",servlet="grailsDispatcherServlet",} 8451.0
tomcat_servlet_maxtime_total{module="localhost/",servlet="groovyPagesServlet",} 0.0
tomcat_servlet_maxtime_total{module="localhost/",servlet="jsp",} 0.0
tomcat_servlet_maxtime_total{module="localhost/supercode",servlet="jsp",} 0.0
tomcat_servlet_maxtime_total{module="localhost/supercode",servlet="groovyPagesServlet",} 0.0
#HELP tomcat_servlet_requestcount_total Tomcat servlet requestCount total
#TYPE tomcat_servlet_requestcount_total counter
tomcat_servlet_requestcount_total{module="localhost/supercode",servlet="grailsDispatcherServlet",} 345.0
tomcat_servlet_requestcount_total{module="localhost/docker",servlet="default",} 0.0
tomcat_servlet_requestcount_total{module="localhost/supercode",servlet="default",} 0.0
tomcat_servlet_requestcount_total{module="localhost/docker",servlet="jsp",} 60465.0
tomcat_servlet_requestcount_total{module="localhost/",servlet="default",} 0.0
tomcat_servlet_requestcount_total{module="localhost/",servlet="grailsDispatcherServlet",} 13597.0
tomcat_servlet_requestcount_total{module="localhost/",servlet="groovyPagesServlet",} 0.0
tomcat_servlet_requestcount_total{module="localhost/",servlet="jsp",} 0.0
tomcat_servlet_requestcount_total{module="localhost/supercode",servlet="jsp",} 0.0
tomcat_servlet_requestcount_total{module="localhost/supercode",servlet="groovyPagesServlet",} 0.0
#HELP tomcat_threadpool_keepalivecount Tomcat threadpool keepAliveCount
#TYPE tomcat_threadpool_keepalivecount gauge
tomcat_threadpool_keepalivecount{port="8009",protocol="ajp-nio",} 0.0
tomcat_threadpool_keepalivecount{port="8080",protocol="http-nio",} 0.0
#HELP tomcat_threadpool_currentthreadcount Tomcat threadpool currentThreadCount
#TYPE tomcat_threadpool_currentthreadcount gauge
tomcat_threadpool_currentthreadcount{port="8009",protocol="ajp-nio",} 10.0
tomcat_threadpool_currentthreadcount{port="8080",protocol="http-nio",} 10.0
#HELP tomcat_threadpool_currentthreadsbusy Tomcat threadpool currentThreadsBusy
#TYPE tomcat_threadpool_currentthreadsbusy gauge
tomcat_threadpool_currentthreadsbusy{port="8009",protocol="ajp-nio",} 0.0
tomcat_threadpool_currentthreadsbusy{port="8080",protocol="http-nio",} 0.0
#HELP tomcat_processingtime_total Tomcat global processingTime
#TYPE tomcat_processingtime_total counter
tomcat_processingtime_total{port="8080",protocol="http-nio",} 950611.0
tomcat_processingtime_total{port="8009",protocol="ajp-nio",} 0.0
#HELP jmx_scrape_duration_seconds Time this JMX scrape took, in seconds.
#TYPE jmx_scrape_duration_seconds gauge
jmx_scrape_duration_seconds 1.82782075
#HELP jmx_scrape_error Non-zero if this scrape failed.
#TYPE jmx_scrape_error gauge
jmx_scrape_error 0.0
#HELP jmx_config_reload_success_total Number of times configuration have successfully been reloaded.
#TYPE jmx_config_reload_success_total counter
jmx_config_reload_success_total 0.0
#HELP jvm_gc_collection_seconds Time spent in a given JVM garbage collector in seconds.
#TYPE jvm_gc_collection_seconds summary
jvm_gc_collection_seconds_count{gc="PS Scavenge",} 7920380.0
jvm_gc_collection_seconds_sum{gc="PS Scavenge",} 49157.027
jvm_gc_collection_seconds_count{gc="PS MarkSweep",} 1211.0
jvm_gc_collection_seconds_sum{gc="PS MarkSweep",} 404.145
四、grafana画图
#cat mytestjvm.json
{
"__inputs": [
{
"name": "DS_PROMETHEUS",
"label": "Prometheus",
"description": "",
"type": "datasource",
"pluginId": "prometheus",
"pluginName": "Prometheus"
}
],
"__requires": [
{
"type": "grafana",
"id": "grafana",
"name": "Grafana",
"version": "4.6.3"
},
{
"type": "panel",
"id": "graph",
"name": "Graph",
"version": ""
},
{
"type": "datasource",
"id": "prometheus",
"name": "Prometheus",
"version": "1.0.0"
},
{
"type": "panel",
"id": "singlestat",
"name": "Singlestat",
"version": ""
}
],
"annotations": {
"list": [
{
"builtIn": 1,
"datasource": "-- Grafana --",
"enable": true,
"hide": true,
"iconColor": "rgba(0, 211, 255, 1)",
"name": "Annotations & Alerts",
"type": "dashboard"
}
]
},
"description": "Dashboard for JVM metrics with Prometheus / JMX Exporter",
"editable": true,
"gnetId": 3066,
"graphTooltip": 0,
"hideControls": true,
"id": null,
"links": [
{
"asDropdown": true,
"icon": "external link",
"includeVars": true,
"keepTime": true,
"tags": [
"llzgnode"
],
"targetBlank": true,
"title": "OS",
"type": "dashboards"
},
{
"asDropdown": true,
"icon": "external link",
"includeVars": true,
"keepTime": true,
"tags": [
"mysql"
],
"targetBlank": true,
"title": "mysql",
"type": "dashboards"
},
{
"asDropdown": true,
"icon": "external link",
"includeVars": true,
"keepTime": true,
"tags": [
"tomcat"
],
"targetBlank": true,
"title": "jvm",
"type": "dashboards"
}
],
"refresh": "30s",
"rows": [
{
"collapse": false,
"height": 35,
"panels": [
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": false,
"colors": [
"#d683ce",
"#d683ce",
"#d683ce"
],
"datasource": "${DS_PROMETHEUS}",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"id": 13,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"span": 2,
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false
},
"tableColumn": "",
"targets": [
{
"expr": "tomcat_requestcount_total{port=\"8080\",instance=~\"$instance\"}",
"format": "time_series",
"intervalFactor": 2,
"refId": "A"
}
],
"thresholds": "",
"title": "requestcount",
"type": "singlestat",
"valueFontSize": "80%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "total"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": false,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": "${DS_PROMETHEUS}",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"id": 14,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"span": 2,
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false
},
"tableColumn": "",
"targets": [
{
"expr": "tomcat_requestcount_total{port=\"8080\",instance=~\"$instance\"}",
"format": "time_series",
"hide": false,
"intervalFactor": 2,
"refId": "A"
}
],
"thresholds": "",
"title": "Requestcount Current",
"type": "singlestat",
"valueFontSize": "80%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "current"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": false,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": "${DS_PROMETHEUS}",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"id": 15,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"span": 2,
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false
},
"tableColumn": "",
"targets": [
{
"expr": "tomcat_requestcount_total{port=\"8080\",instance=~\"$instance\"}",
"format": "time_series",
"intervalFactor": 2,
"refId": "A"
}
],
"thresholds": "",
"title": "Requestcount Average",
"type": "singlestat",
"valueFontSize": "80%",
"valueMaps": [
{
"op": "=",
"text": "N/A",
"value": "null"
}
],
"valueName": "avg"
},
{
"cacheTimeout": null,
"colorBackground": false,
"colorValue": false,
"colors": [
"#299c46",
"rgba(237, 129, 40, 0.89)",
"#d44a3a"
],
"datasource": "${DS_PROMETHEUS}",
"format": "none",
"gauge": {
"maxValue": 100,
"minValue": 0,
"show": false,
"thresholdLabels": false,
"thresholdMarkers": true
},
"id": 16,
"interval": null,
"links": [],
"mappingType": 1,
"mappingTypes": [
{
"name": "value to text",
"value": 1
},
{
"name": "range to text",
"value": 2
}
],
"maxDataPoints": 100,
"nullPointMode": "connected",
"nullText": null,
"postfix": "",
"postfixFontSize": "50%",
"prefix": "",
"prefixFontSize": "50%",
"rangeMaps": [
{
"from": "null",
"text": "N/A",
"to": "null"
}
],
"span": 2,
"sparkline": {
"fillColor": "rgba(31, 118, 189, 0.18)",
"full": false,
"lineColor": "rgb(31, 120, 193)",
"show": false
},
"tableColumn": "",
"targets": [
{
"expr": "tomcat_errorcount_total{port=\"8080\",instance=~\"$instance\"}",
"format": "time_series",
"hide": false,
"intervalFactor": 2,
"refId": "A"
}
],
"thresholds": "",
"title": "Errorcount",
"type": "singlestat",
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}原文地址：http://blog.51cto.com/11578535/2073001