Summarize disk device metrics, add some more READMEs.

This commit is contained in:
Mark Nellemann 2021-05-18 07:14:57 +02:00
parent cca1c099df
commit b6cae0da9e
12 changed files with 229 additions and 163 deletions

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@ -1,49 +1,18 @@
# System Monitor
# System Monitor / System Observer
... or some better name.
## Agent
## Client
Runs on your host and collects metrics. Metrics are aggregated and sent to central *collector*.
Runs on your hosts and collects metrics. Metrics are aggregated and sent to the central *server*.
## Collector
## Server
Receives aggregated measurements from agents and saves metrics info InfluxDB.
Receives aggregated measurements from clients and saves metrics into InfluxDB.
### Build & Test
Use the gradle build tool, which will download all required dependencies:
```shell
./gradlew clean build
```
### Local Testing
#### InfluxDB container
Start the InfluxDB container:
```shell
docker run --name=influxdb --rm -d -p 8086:8086 influxdb:1.8-alpine
```
To execute the Influx client from within the container:
```shell
docker exec -it influxdb influx
```
#### Grafana container
Start the Grafana container, linking it to the InfluxDB container:
```shell
docker run --name grafana --link influxdb:influxdb --rm -d -p 3000:3000 grafana/grafana:7.1.3
```
Setup Grafana to connect to the InfluxDB container by defining a new datasource on URL *http://influxdb:8086* named *sysmon*.
## Plugins
Loaded by the client and provides extensions for doing the actual metric monitoring.

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client/README.md Normal file
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# Client
Client component.
## Development
### Build & Test
Use the gradle build tool, which will download all required dependencies:
```shell
./gradlew clean build
```

3
plugins/README.md Normal file
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# Plugins
Collections of base plugins.

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@ -11,19 +11,19 @@ import java.util.regex.Pattern;
public class AixDiskStat {
private static final Logger log = LoggerFactory.getLogger(AixProcessorStat.class);
private static final Logger log = LoggerFactory.getLogger(AixDiskStat.class);
// Disks: % tm_act Kbps tps Kb_read Kb_wrtn
// hdisk0 1.0 752.0 81.0 740 12
private final Pattern pattern = Pattern.compile("^(hdisk\\d+)\\s+(\\d+\\.?\\d*)\\s+\\s+(\\d+\\.?\\d*)\\s+\\s+(\\d+\\.?\\d*)\\s+(\\d+)\\s+(\\d+)");
private String device;
private Float tmAct; // Indicates the percentage of time the physical disk/tape was active (bandwidth utilization for the drive).
private Float kbps; // Indicates the amount of data transferred (read or written) to the drive in KB per second.
private Float tps; // Indicates the number of transfers per second that were issued to the physical disk/tape. A transfer is an I/O request to the physical disk/tape. Multiple logical requests can be combined into a single I/O request to the disk. A transfer is of indeterminate size.
private Long kbRead; // The total number of KB read.
private Long kbWritten; // The total number of KB written.
//private String device;
//private Float tmAct = 0.0f; // Indicates the percentage of time the physical disk/tape was active (bandwidth utilization for the drive).
private Float kbps = 0.0f; // Indicates the amount of data transferred (read or written) to the drive in KB per second.
private Float tps = 0.0f; // Indicates the number of transfers per second that were issued to the physical disk/tape. A transfer is an I/O request to the physical disk/tape. Multiple logical requests can be combined into a single I/O request to the disk. A transfer is of indeterminate size.
private Long kbRead = 0l; // The total number of KB read.
private Long kbWritten = 0l; // The total number of KB written.
AixDiskStat(List<String> lines) {
@ -33,13 +33,12 @@ public class AixDiskStat {
if (line.startsWith("hdisk")) {
Matcher matcher = pattern.matcher(line);
if (matcher.find() && matcher.groupCount() == 6) {
device = matcher.group(1);
tmAct = Float.parseFloat(matcher.group(2));
kbps = Float.parseFloat(matcher.group(3));
tps = Float.parseFloat(matcher.group(4));
kbRead = Long.parseLong(matcher.group(5));
kbWritten = Long.parseLong(matcher.group(6));
break;
//device = matcher.group(1);
//tmAct = Float.parseFloat(matcher.group(2));
kbps += Float.parseFloat(matcher.group(3));
tps += Float.parseFloat(matcher.group(4));
kbRead += Long.parseLong(matcher.group(5));
kbWritten += Long.parseLong(matcher.group(6));
}
}
@ -50,16 +49,13 @@ public class AixDiskStat {
public Map<String, String> getTags() {
Map<String, String> tags = new HashMap<>();
tags.put("device", device);
return tags;
}
public Map<String, Object> getFields() {
Map<String, Object> fields = new HashMap<>();
fields.put("reads", kbRead * 1024); // from Kb to b
fields.put("writes", kbWritten * 1024); // from Kb to b
fields.put("reads", kbRead * 1024); // from Kb to bytes
fields.put("writes", kbWritten * 1024); // from Kb to bytes
return fields;
}
}

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@ -15,7 +15,7 @@ class AixDiskTest extends Specification {
AixDiskStat stats = extension.processCommandOutput(lines)
then:
stats.getTags().get("device") == "hdisk0"
//stats.getTags().get("device") == "hdisk0"
stats.getFields().get("reads") == 757760l
stats.getFields().get("writes") == 12288l

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@ -72,16 +72,17 @@ public class LinuxDiskExtension implements MetricExtension {
protected LinuxDiskProcLine processFileOutput(List<String> inputLines) {
List<String> lines = new ArrayList<>(inputLines.size());
for(String line : inputLines) {
String[] splitStr = line.trim().split("\\s+");
String device = splitStr[2];
if (device.matches("[sv]d[a-z]{1}") || device.matches("nvme[0-9]n[0-9]")) {
//log.warn("Going for: " + line);
return new LinuxDiskProcLine(line);
lines.add(line);
}
}
return null;
return new LinuxDiskProcLine(lines);
}
}

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@ -1,9 +1,17 @@
package org.sysmon.plugins.sysmon_linux;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
public class LinuxDiskProcLine {
// Sectors to bytes - each sector is 512 bytes - https://lkml.org/lkml/2015/8/17/269
static final private int SECTOR_BYTE_SIZE = 512;
private static final int SECTOR_BYTE_SIZE = 512;
private static final Logger log = LoggerFactory.getLogger(LinuxDiskProcLine.class);
/*
== ===================================
@ -41,76 +49,71 @@ public class LinuxDiskProcLine {
== =====================================
*/
private final int major;
private final int minor;
private final String device; // device name
private final Long readsCompleted; // successfully
private final Long readsMerged;
private final Long sectorsRead; // 512 bytes pr. sector
private final Long timeSpentReading; // ms
private final Long writesCompleted; // successfully
private final Long writesMerged;
private final Long sectorsWritten; // 512 bytes pr. sector
private final Long timeSpentWriting; // ms
private final Long ioInProgress;
private final Long timeSpentOnIo; // ms
private final Long timeSpentOnIoWeighted;
private Long readsCompleted = 0l; // successfully
private Long readsMerged = 0l;
private Long sectorsRead = 0l; // 512 bytes pr. sector
private Long timeSpentReading = 0l; // ms
private Long writesCompleted = 0l; // successfully
private Long writesMerged = 0l;
private Long sectorsWritten = 0l; // 512 bytes pr. sector
private Long timeSpentWriting = 0l; // ms
private Long ioInProgress = 0l;
private Long timeSpentOnIo = 0l; // ms
private Long timeSpentOnIoWeighted = 0l;
private final Long discardsCompleted; // successfully
private final Long discardsMerged;
private final Long sectorsDiscarded; // 512 bytes pr. sector
private final Long timeSpentDiscarding; // ms
private Long discardsCompleted = 0l; // successfully
private Long discardsMerged = 0l;
private Long sectorsDiscarded = 0l; // 512 bytes pr. sector
private Long timeSpentDiscarding = 0l; // ms
private final Long flushRequestsCompleted;
private final Long timeSpentFlushing; // ms
private Long flushRequestsCompleted = 0l;
private Long timeSpentFlushing = 0l; // ms
LinuxDiskProcLine(String procString) {
LinuxDiskProcLine(List<String> procLines) {
String[] splitStr = procString.trim().split("\\s+");
if(splitStr.length < 14) {
throw new UnsupportedOperationException("Linux proc DISK string error: " + procString);
for(String procLine : procLines) {
String[] splitStr = procLine.trim().split("\\s+");
if (splitStr.length < 14) {
throw new UnsupportedOperationException("Linux proc DISK string error: " + procLine);
}
//this.major = Integer.parseInt(splitStr[0]);
//this.minor = Integer.parseInt(splitStr[1]);
//this.device = splitStr[2];
this.readsCompleted += Long.parseLong(splitStr[3]);
this.readsMerged += Long.parseLong(splitStr[4]);
this.sectorsRead += Long.parseLong(splitStr[5]);
this.timeSpentReading += Long.parseLong(splitStr[6]);
this.writesCompleted += Long.parseLong(splitStr[7]);
this.writesMerged += Long.parseLong(splitStr[8]);
this.sectorsWritten += Long.parseLong(splitStr[9]);
this.timeSpentWriting += Long.parseLong(splitStr[10]);
this.ioInProgress += Long.parseLong(splitStr[11]);
this.timeSpentOnIo += Long.parseLong(splitStr[12]);
this.timeSpentOnIoWeighted += Long.parseLong(splitStr[13]);
if (splitStr.length >= 18) {
this.discardsCompleted += Long.parseLong(splitStr[10]);
this.discardsMerged += Long.parseLong(splitStr[11]);
this.sectorsDiscarded += Long.parseLong(splitStr[12]);
this.timeSpentDiscarding += Long.parseLong(splitStr[13]);
} else {
this.discardsCompleted = null;
this.discardsMerged = null;
this.sectorsDiscarded = null;
this.timeSpentDiscarding = null;
}
if (splitStr.length == 20) {
this.flushRequestsCompleted += Long.parseLong(splitStr[14]);
this.timeSpentFlushing += Long.parseLong(splitStr[15]);
} else {
this.flushRequestsCompleted = null;
this.timeSpentFlushing = null;
}
}
this.major = Integer.parseInt(splitStr[0]);
this.minor = Integer.parseInt(splitStr[1]);
this.device = splitStr[2];
this.readsCompleted = Long.parseLong(splitStr[3]);
this.readsMerged = Long.parseLong(splitStr[4]);
this.sectorsRead = Long.parseLong(splitStr[5]);
this.timeSpentReading = Long.parseLong(splitStr[6]);
this.writesCompleted = Long.parseLong(splitStr[7]);
this.writesMerged = Long.parseLong(splitStr[8]);
this.sectorsWritten = Long.parseLong(splitStr[9]);
this.timeSpentWriting = Long.parseLong(splitStr[10]);
this.ioInProgress = Long.parseLong(splitStr[11]);
this.timeSpentOnIo = Long.parseLong(splitStr[12]);
this.timeSpentOnIoWeighted = Long.parseLong(splitStr[13]);
if(splitStr.length >= 18) {
this.discardsCompleted = Long.parseLong(splitStr[10]);
this.discardsMerged = Long.parseLong(splitStr[11]);
this.sectorsDiscarded = Long.parseLong(splitStr[12]);
this.timeSpentDiscarding = Long.parseLong(splitStr[13]);
} else {
this.discardsCompleted = null;
this.discardsMerged = null;
this.sectorsDiscarded = null;
this.timeSpentDiscarding = null;
}
if(splitStr.length == 20) {
this.flushRequestsCompleted = Long.parseLong(splitStr[14]);
this.timeSpentFlushing = Long.parseLong(splitStr[15]);
} else {
this.flushRequestsCompleted = null;
this.timeSpentFlushing = null;
}
}
public String getDevice() {
return device;
}
public Long getTimeSpentOnIo() {

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@ -19,7 +19,6 @@ public class LinuxDiskStat {
LinuxDiskStat(LinuxDiskProcLine proc1, LinuxDiskProcLine proc2) {
device = proc1.getDevice();
iotime = proc2.getTimeSpentOnIo() - proc1.getTimeSpentOnIo();
writes = proc2.getBytesWritten() - proc1.getBytesWritten();
reads = proc2.getBytesRead() - proc1.getBytesRead();
@ -28,7 +27,6 @@ public class LinuxDiskStat {
public Map<String, String> getTags() {
Map<String, String> tags = new HashMap<>();
tags.put("device", device);
return tags;
}

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@ -16,8 +16,7 @@ class LinuxDiskTest extends Specification {
LinuxDiskProcLine procLine = extension.processFileOutput(lines)
then:
procLine.getDevice() == "nvme0n1"
procLine.getTimeSpentOnIo() == 79560l
procLine.getTimeSpentOnIo() == 11145860l
}
@ -34,10 +33,9 @@ class LinuxDiskTest extends Specification {
LinuxDiskStat diskStat = new LinuxDiskStat(procLine1, procLine2)
then:
diskStat.getTags().get("device") == "nvme0n1"
diskStat.getFields().get("iotime") == 272l
diskStat.getFields().get("writes") == 40407040l
diskStat.getFields().get("reads") == 80896l
diskStat.getFields().get("iotime") == 180l
diskStat.getFields().get("writes") == 108371968l
diskStat.getFields().get("reads") == 69632l
}
}

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@ -1,15 +1,37 @@
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41
server/README.md Normal file
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@ -0,0 +1,41 @@
# Server
Server component.
## Development
### Build & Test
Use the gradle build tool, which will download all required dependencies:
```shell
./gradlew clean build
```
### Local Testing
#### InfluxDB container
Start the InfluxDB container:
```shell
docker run --name=influxdb --rm -d -p 8086:8086 influxdb:1.8-alpine
```
To execute the Influx client from within the container:
```shell
docker exec -it influxdb influx
```
#### Grafana container
Start the Grafana container, linking it to the InfluxDB container:
```shell
docker run --name grafana --link influxdb:influxdb --rm -d -p 3000:3000 grafana/grafana:7.1.3
```
Setup Grafana to connect to the InfluxDB container by defining a new datasource on URL *http://influxdb:8086* named *sysmon*.