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You can pay attention to some dry goods. Build jar package with dependency <plugin> <artifactId>maven-assembly-plugin</artifactId> <configuration> <appendAssemblyId>false</appendAssemblyId> <descriptorRefs> ...

order This paper mainly studies the consumemode.order of rocketmq ConsumeMode.ORDERLY rocketmq-spring-boot-2.0.4-sources.jar!/org/apache/rocketmq/spring/annotation/ConsumeMode.java public enum ConsumeMode { /** * Receive asynchronously delivered messages concurrently */ CONCURRENTLY, /** * Receive asynchronously deli ...

brief introduction log server Improving security Centralized storage of logs Defect: Difficulty in log analysis ELK Log Analysis System Elasticsearch: Storage, Index Pool Logstash: Log Collector Kibana: Data visualization Log Processing Steps 1, centralize log management 2, Logstash and output to Elasticsearch 3. Index and store the f ...

order This paper mainly studies the CleanCommitLogService of rocketmq CleanCommitLogService rocketmq-all-4.6.0-source-release/store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java class CleanCommitLogService { private final static int MAX_MANUAL_DELETE_FILE_TIMES = 20; private final double diskSpaceWarningL ...

order This paper mainly studies service not available of rocketmq SERVICE_NOT_AVAILABLE rocketmq-all-4.6.0-source-release/common/src/main/java/org/apache/rocketmq/common/protocol/ResponseCode.java public class ResponseCode extends RemotingSysResponseCode { public static final int FLUSH_DISK_TIMEOUT = 10; public static final int SLAVE_ ...

I. origin Historically, Linux startup Always used init Process. The following command is used to start the service. $ sudo /etc/init.d/apache2 start # perhaps $ service apache2 start This method has two disadvantages. First, it takes a long time to start. init process is started serially. The next process will be started only afte ...

order This paper mainly studies the leader elector of storm nimbus Nimbus org/apache/storm/daemon/nimbus/Nimbus.java public static void main(String[] args) throws Exception { Utils.setupDefaultUncaughtExceptionHandler(); launch(new StandaloneINimbus()); } public static Nimbus launch(INimbus inimbus) throws Exception ...

zabbix monitoring service zabbix: it is an enterprise level open source solution based on WEB interface that provides distributed system monitoring and network monitoring functions. It can monitor various network parameters to ensure the safe operation of the server system, and provide flexible notification mechanism to enabl ...

Machine preparation Two independent linux hosts with IP of 172.31.175.142/143 172.31.175.142 NameServer1, Broker Master1 172.31.175.143 NameServer2, Broker Master2 Installation configuration install Download the binary version and extract it wget http://mirrors.hust.edu.cn/apache/rocketmq/4.3.0/rocketmq-all-4.3.0-bin-r ...

order This paper mainly studies the start-up of storm supervisor Supervisor.launch storm-core-1.2.2-sources.jar!/org/apache/storm/daemon/supervisor/Supervisor.java /** * Launch the supervisor */ public void launch() throws Exception { LOG.info("Starting Supervisor with conf {}", conf); String path = ConfigUtils ...