SpringBoot + Kafka + ELK 完成海量日志收集（超詳細）-有解無憂

整體流程大概如下：

服務器準備

在這先列出各服務器節點，方便同學們在下文中對照節點查看相應內容

SpringBoot專案準備

引入log4j2替換SpringBoot默認log，demo專案結構如下：

pom

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <!--  排除spring-boot-starter-logging -->
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency> 
 <!-- log4j2 -->
 <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-log4j2</artifactId>
 </dependency> 
   <dependency>
     <groupId>com.lmax</groupId>
     <artifactId>disruptor</artifactId>
     <version>3.3.4</version>
   </dependency> 
</dependencies>

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="INFO" schema="Log4J-V2.0.xsd" monitorInterval="600" >
    <Properties>
        <Property name="LOG_HOME">logs</Property>
        <property name="FILE_NAME">collector</property>
        <property name="patternLayout">[%d{yyyy-MM-dd'T'HH:mm:ss.SSSZZ}] [%level{length=5}] [%thread-%tid] [%logger] [%X{hostName}] [%X{ip}] [%X{applicationName}] [%F,%L,%C,%M] [%m] ## '%ex'%n</property>
    </Properties>
    <Appenders>
        <Console name="CONSOLE" target="SYSTEM_OUT">
            <PatternLayout pattern="${patternLayout}"/>
        </Console>  
        <RollingRandomAccessFile name="appAppender" fileName="${LOG_HOME}/app-${FILE_NAME}.log" filePattern="${LOG_HOME}/app-${FILE_NAME}-%d{yyyy-MM-dd}-%i.log" >
          <PatternLayout pattern="${patternLayout}" />
          <Policies>
              <TimeBasedTriggeringPolicy interval="1"/>
              <SizeBasedTriggeringPolicy size="500MB"/>
          </Policies>
          <DefaultRolloverStrategy max="20"/>         
        </RollingRandomAccessFile>
        <RollingRandomAccessFile name="errorAppender" fileName="${LOG_HOME}/error-${FILE_NAME}.log" filePattern="${LOG_HOME}/error-${FILE_NAME}-%d{yyyy-MM-dd}-%i.log" >
          <PatternLayout pattern="${patternLayout}" />
          <Filters>
              <ThresholdFilter level="warn" onMatch="ACCEPT" onMismatch="DENY"/>
          </Filters>              
          <Policies>
              <TimeBasedTriggeringPolicy interval="1"/>
              <SizeBasedTriggeringPolicy size="500MB"/>
          </Policies>
          <DefaultRolloverStrategy max="20"/>         
        </RollingRandomAccessFile>            
    </Appenders>
    <Loggers>
        <!-- 業務相關 異步logger -->
        <AsyncLogger name="com.bfxy.*" level="info" includeLocation="true">
          <AppenderRef ref="appAppender"/>
        </AsyncLogger>
        <AsyncLogger name="com.bfxy.*" level="info" includeLocation="true">
          <AppenderRef ref="errorAppender"/>
        </AsyncLogger>       
        <Root level="info">
            <Appender-Ref ref="CONSOLE"/>
            <Appender-Ref ref="appAppender"/>
            <AppenderRef ref="errorAppender"/>
        </Root>         
    </Loggers>
</Configuration>

IndexController

測驗Controller，用以列印日志進行除錯

@Slf4j
@RestController
public class IndexController {

 @RequestMapping(value = "https://www.cnblogs.com/index")
 public String index() {
  InputMDC.putMDC();
  
  log.info("我是一條info日志");
  
  log.warn("我是一條warn日志");

  log.error("我是一條error日志");
  
  return "idx";
 }


 @RequestMapping(value = "https://www.cnblogs.com/err")
 public String err() {
  InputMDC.putMDC();
  try {
   int a = 1/0;
  } catch (Exception e) {
   log.error("算術例外", e);
  }
  return "err";
 }
 
}

InputMDC

用以獲取log中的[%X{hostName}]、[%X{ip}]、[%X{applicationName}]三個欄位值

@Component
public class InputMDC implements EnvironmentAware {

 private static Environment environment;
 
 @Override
 public void setEnvironment(Environment environment) {
  InputMDC.environment = environment;
 }
 
 public static void putMDC() {
  MDC.put("hostName", NetUtil.getLocalHostName());
  MDC.put("ip", NetUtil.getLocalIp());
  MDC.put("applicationName", environment.getProperty("spring.application.name"));
 }

}

NetUtil

public class NetUtil {   
 
 public static String normalizeAddress(String address){
  String[] blocks = address.split("[:]");
  if(blocks.length > 2){
   throw new IllegalArgumentException(address + " is invalid");
  }
  String host = blocks[0];
  int port = 80;
  if(blocks.length > 1){
   port = Integer.valueOf(blocks[1]);
  } else {
   address += ":"+port; //use default 80
  } 
  String serverAddr = String.format("%s:%d", host, port);
  return serverAddr;
 }
 
 public static String getLocalAddress(String address){
  String[] blocks = address.split("[:]");
  if(blocks.length != 2){
   throw new IllegalArgumentException(address + " is invalid address");
  } 
  String host = blocks[0];
  int port = Integer.valueOf(blocks[1]);
  
  if("0.0.0.0".equals(host)){
   return String.format("%s:%d",NetUtil.getLocalIp(), port);
  }
  return address;
 }
 
 private static int matchedIndex(String ip, String[] prefix){
  for(int i=0; i<prefix.length; i++){
   String p = prefix[i];
   if("*".equals(p)){ //*, assumed to be IP
    if(ip.startsWith("127.") ||
       ip.startsWith("10.") || 
       ip.startsWith("172.") ||
       ip.startsWith("192.")){
     continue;
    }
    return i;
   } else {
    if(ip.startsWith(p)){
     return i;
    }
   } 
  }
  
  return -1;
 }
 
 public static String getLocalIp(String ipPreference) {
  if(ipPreference == null){
   ipPreference = "*>10>172>192>127";
  }
  String[] prefix = ipPreference.split("[> ]+");
  try {
   Pattern pattern = Pattern.compile("[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+");
   Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
   String matchedIp = null;
   int matchedIdx = -1;
   while (interfaces.hasMoreElements()) {
    NetworkInterface ni = interfaces.nextElement();
    Enumeration<InetAddress> en = ni.getInetAddresses(); 
    while (en.hasMoreElements()) {
     InetAddress addr = en.nextElement();
     String ip = addr.getHostAddress();  
     Matcher matcher = pattern.matcher(ip);
     if (matcher.matches()) {  
      int idx = matchedIndex(ip, prefix);
      if(idx == -1) continue;
      if(matchedIdx == -1){
       matchedIdx = idx;
       matchedIp = ip;
      } else {
       if(matchedIdx>idx){
        matchedIdx = idx;
        matchedIp = ip;
       }
      }
     } 
    } 
   } 
   if(matchedIp != null) return matchedIp;
   return "127.0.0.1";
  } catch (Exception e) { 
   return "127.0.0.1";
  }
 }
 
 public static String getLocalIp() {
  return getLocalIp("*>10>172>192>127");
 }
 
 public static String remoteAddress(SocketChannel channel){
  SocketAddress addr = channel.socket().getRemoteSocketAddress();
  String res = String.format("%s", addr);
  return res;
 }
 
 public static String localAddress(SocketChannel channel){
  SocketAddress addr = channel.socket().getLocalSocketAddress();
  String res = String.format("%s", addr);
  return addr==null? res: res.substring(1);
 }
 
 public static String getPid(){
  RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
        String name = runtime.getName();
        int index = name.indexOf("@");
        if (index != -1) {
            return name.substring(0, index);
        }
  return null;
 }
 
 public static String getLocalHostName() {
        try {
            return (InetAddress.getLocalHost()).getHostName();
        } catch (UnknownHostException uhe) {
            String host = uhe.getMessage();
            if (host != null) {
                int colon = host.indexOf(':');
                if (colon > 0) {
                    return host.substring(0, colon);
                }
            }
            return "UnknownHost";
        }
    }
}

啟動專案，訪問/index和/ero介面，可以看到專案中生成了app-collector.log和error-collector.log兩個日志檔案：

我們將Springboot服務部署在192.168.11.31這臺機器上，

Kafka安裝和啟用

kafka下載地址：

http://kafka.apache.org/downloads.html

kafka安裝步驟：首先kafka安裝需要依賴與zookeeper，所以小伙伴們先準備好zookeeper環境（三個節點即可），然后我們來一起構建kafka broker，

## 解壓命令：
tar -zxvf kafka_2.12-2.1.0.tgz -C /usr/local/
## 改名命令：
mv kafka_2.12-2.1.0/ kafka_2.12
## 進入解壓后的目錄，修改server.properties檔案：
vim /usr/local/kafka_2.12/config/server.properties
## 修改配置：
broker.id=0
port=9092
host.name=192.168.11.51
advertised.host.name=192.168.11.51
log.dirs=/usr/local/kafka_2.12/kafka-logs
num.partitions=2
zookeeper.connect=192.168.11.111:2181,192.168.11.112:2181,192.168.11.113:2181

## 建立日志檔案夾：
mkdir /usr/local/kafka_2.12/kafka-logs

##啟動kafka：
/usr/local/kafka_2.12/bin/kafka-server-start.sh /usr/local/kafka_2.12/config/server.properties &

創建兩個topic

## 創建topic
kafka-topics.sh --zookeeper 192.168.11.111:2181 --create --topic app-log-collector --partitions 1  --replication-factor 1
kafka-topics.sh --zookeeper 192.168.11.111:2181 --create --topic error-log-collector --partitions 1  --replication-factor 1

我們可以查看一下topic情況

kafka-topics.sh --zookeeper 192.168.11.111:2181 --topic app-log-test --describe

可以看到已經成功啟用了app-log-collector和error-log-collector兩個topic

filebeat安裝和啟用

filebeat下載

cd /usr/local/software
tar -zxvf filebeat-6.6.0-linux-x86_64.tar.gz -C /usr/local/
cd /usr/local
mv filebeat-6.6.0-linux-x86_64/ filebeat-6.6.0

配置filebeat，可以參考下方yml組態檔

vim /usr/local/filebeat-5.6.2/filebeat.yml
###################### Filebeat Configuration Example #########################
filebeat.prospectors:

- input_type: log

  paths:
    ## app-服務名稱.log, 為什么寫死，防止發生輪轉抓取歷史資料
    - /usr/local/logs/app-collector.log
  #定義寫入 ES 時的 _type 值
  document_type: "app-log"
  multiline:
    #pattern: '^\s*(\d{4}|\d{2})\-(\d{2}|[a-zA-Z]{3})\-(\d{2}|\d{4})'   # 指定匹配的運算式（匹配以 2017-11-15 08:04:23:889 時間格式開頭的字串）
    pattern: '^\['                              # 指定匹配的運算式（匹配以 "{ 開頭的字串）
    negate: true                                # 是否匹配到
    match: after                                # 合并到上一行的末尾
    max_lines: 2000                             # 最大的行數
    timeout: 2s                                 # 如果在規定時間沒有新的日志事件就不等待后面的日志
  fields:
    logbiz: collector
    logtopic: app-log-collector   ## 按服務劃分用作kafka topic
    evn: dev

- input_type: log

  paths:
    - /usr/local/logs/error-collector.log
  document_type: "error-log"
  multiline:
    #pattern: '^\s*(\d{4}|\d{2})\-(\d{2}|[a-zA-Z]{3})\-(\d{2}|\d{4})'   # 指定匹配的運算式（匹配以 2017-11-15 08:04:23:889 時間格式開頭的字串）
    pattern: '^\['                              # 指定匹配的運算式（匹配以 "{ 開頭的字串）
    negate: true                                # 是否匹配到
    match: after                                # 合并到上一行的末尾
    max_lines: 2000                             # 最大的行數
    timeout: 2s                                 # 如果在規定時間沒有新的日志事件就不等待后面的日志
  fields:
    logbiz: collector
    logtopic: error-log-collector   ## 按服務劃分用作kafka topic
    evn: dev
    
output.kafka:
  enabled: true
  hosts: ["192.168.11.51:9092"]
  topic: '%{[fields.logtopic]}'
  partition.hash:
    reachable_only: true
  compression: gzip
  max_message_bytes: 1000000
  required_acks: 1
logging.to_files: true

filebeat啟動：

檢查配置是否正確

cd /usr/local/filebeat-6.6.0
./filebeat -c filebeat.yml -configtest
## Config OK

啟動filebeat

/usr/local/filebeat-6.6.0/filebeat &

檢查是否啟動成功

ps -ef | grep filebeat

可以看到filebeat已經啟動成功

然后我們訪問192.168.11.31:8001/index和192.168.11.31:8001/err，再查看kafka的logs檔案，可以看到已經生成了app-log-collector-0和error-log-collector-0檔案，說明filebeat已經幫我們把資料收集好放到了kafka上，

logstash安裝

我們在logstash的安裝目錄下新建一個檔案夾

mkdir scrpit

然后cd進該檔案，創建一個logstash-script.conf檔案

cd scrpit
vim logstash-script.conf
## multiline 插件也可以用于其他類似的堆疊式資訊，比如 linux 的內核日志，
input {
  kafka {
    ## app-log-服務名稱
    topics_pattern => "app-log-.*"
    bootstrap_servers => "192.168.11.51:9092"
 codec => json
 consumer_threads => 1 ## 增加consumer的并行消費執行緒數
 decorate_events => true
    #auto_offset_rest => "latest"
 group_id => "app-log-group"
   }
   
   kafka {
    ## error-log-服務名稱
    topics_pattern => "error-log-.*"
    bootstrap_servers => "192.168.11.51:9092"
 codec => json
 consumer_threads => 1
 decorate_events => true
    #auto_offset_rest => "latest"
 group_id => "error-log-group"
   }
   
}

filter {
  
  ## 時區轉換
  ruby {
 code => "event.set('index_time',event.timestamp.time.localtime.strftime('%Y.%m.%d'))"
  }

  if "app-log" in [fields][logtopic]{
    grok {
        ## 運算式,這里對應的是Springboot輸出的日志格式
        match => ["message", "\[%{NOTSPACE:currentDateTime}\] \[%{NOTSPACE:level}\] \[%{NOTSPACE:thread-id}\] \[%{NOTSPACE:class}\] \[%{DATA:hostName}\] \[%{DATA:ip}\] \[%{DATA:applicationName}\] \[%{DATA:location}\] \[%{DATA:messageInfo}\] ## (\'\'|%{QUOTEDSTRING:throwable})"]
    }
  }

  if "error-log" in [fields][logtopic]{
    grok {
        ## 運算式
        match => ["message", "\[%{NOTSPACE:currentDateTime}\] \[%{NOTSPACE:level}\] \[%{NOTSPACE:thread-id}\] \[%{NOTSPACE:class}\] \[%{DATA:hostName}\] \[%{DATA:ip}\] \[%{DATA:applicationName}\] \[%{DATA:location}\] \[%{DATA:messageInfo}\] ## (\'\'|%{QUOTEDSTRING:throwable})"]
    }
  }
  
}

## 測驗輸出到控制臺：
output {
  stdout { codec => rubydebug }
}


## elasticsearch：
output {

  if "app-log" in [fields][logtopic]{
 ## es插件
 elasticsearch {
       # es服務地址
        hosts => ["192.168.11.35:9200"]
        # 用戶名密碼      
        user => "elastic"
        password => "123456"
        ## 索引名，+ 號開頭的，就會自動認為后面是時間格式：
        ## javalog-app-service-2019.01.23 
        index => "app-log-%{[fields][logbiz]}-%{index_time}"
        # 是否嗅探集群ip：一般設定true；http://192.168.11.35:9200/_nodes/http?pretty
        # 通過嗅探機制進行es集群負載均衡發日志訊息
        sniffing => true
        # logstash默認自帶一個mapping模板，進行模板覆寫
        template_overwrite => true
    } 
  }
  
  if "error-log" in [fields][logtopic]{
 elasticsearch {
        hosts => ["192.168.11.35:9200"]    
        user => "elastic"
        password => "123456"
        index => "error-log-%{[fields][logbiz]}-%{index_time}"
        sniffing => true
        template_overwrite => true
    } 
  }
  

}

啟動logstash

/usr/local/logstash-6.6.0/bin/logstash -f /usr/local/logstash-6.6.0/script/logstash-script.conf &

等待啟動成功，我們再次訪問192.168.11.31:8001/err

可以看到控制臺開始列印日志

ElasticSearch與Kibana

ES和Kibana的搭建之前沒寫過博客，網上資料也比較多，大家可以自行搜索，

搭建完成后，訪問Kibana的管理頁面192.168.11.35:5601，選擇Management -> Kinaba - Index Patterns

然后Create index pattern

index pattern 輸入 app-log-*
Time Filter field name 選擇 currentDateTime

這樣我們就成功創建了索引，

我們再次訪問192.168.11.31:8001/err，這個時候就可以看到我們已經命中了一條log資訊

里面展示了日志的全量資訊

到這里，我們完整的日志收集及可視化就搭建完成了！

原文鏈接：https://blog.csdn.net/lt326030434/article/details/107361190

著作權宣告：本文為CSDN博主「簡單隨風」的原創文章，遵循CC 4.0 BY-SA著作權協議，轉載請附上原文出處鏈接及本宣告，

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