主頁 > 作業系統 > SpringBoot應用程式啟動后立即關閉

SpringBoot應用程式啟動后立即關閉

2022-10-11 08:31:24 作業系統

我不明白為什么我的 dockerized Spring Boot 應用程式在啟動后立即終止。我研究了類似的問題,但找不到我失敗的原因。

docker 映像在本地運行正常,但在 Azure 容器應用程式上運行時會自動關閉。

這是 Hikari 在除錯時的日志:

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.7.4)

2022-10-02 23:09:00.444  INFO 1 --- [           main] io.pomatti.app.books.BookApplication     : Starting BookApplication v0.0.1-SNAPSHOT using Java 17.0.4.1 on app-books--sw6babs-6db8f449fb-n2pvt with PID 1 (/opt/app/*.jar started by root in /opt/app)
2022-10-02 23:09:00.509  INFO 1 --- [           main] io.pomatti.app.books.BookApplication     : No active profile set, falling back to 1 default profile: "default"
2022-10-02 23:09:02.933  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2022-10-02 23:09:03.111  INFO 1 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 169 ms. Found 1 JPA repository interfaces.
2022-10-02 23:09:04.535  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2022-10-02 23:09:04.542  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2022-10-02 23:09:04.542  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.65]
2022-10-02 23:09:04.715  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2022-10-02 23:09:04.715  INFO 1 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 4080 ms
2022-10-02 23:09:04.927 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : Driver class com.microsoft.sqlserver.jdbc.SQLServerDriver found in Thread context class loader TomcatEmbeddedWebappClassLoader
  context: ROOT
  delegate: true
----------> Parent Classloader:
org.springframework.boot.loader.LaunchedURLClassLoader@28c97a5

2022-10-02 23:09:05.833  INFO 1 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2022-10-02 23:09:06.014  INFO 1 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.6.11.Final
2022-10-02 23:09:06.327  INFO 1 --- [           main] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
2022-10-02 23:09:06.617 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : HikariPool-1 - configuration:
2022-10-02 23:09:06.620 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : allowPoolSuspension................................false
2022-10-02 23:09:06.620 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : autoCommit................................true
2022-10-02 23:09:06.620 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : catalog................................none
2022-10-02 23:09:06.620 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : connectionInitSql................................none
2022-10-02 23:09:06.620 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : connectionTestQuery................................none
2022-10-02 23:09:06.620 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : connectionTimeout................................30000
2022-10-02 23:09:06.620 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : dataSource................................none
2022-10-02 23:09:06.621 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : dataSourceClassName................................none
2022-10-02 23:09:06.621 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : dataSourceJNDI................................none
2022-10-02 23:09:06.621 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : dataSourceProperties................................{password=<masked>}
2022-10-02 23:09:06.621 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : driverClassName................................"com.microsoft.sqlserver.jdbc.SQLServerDriver"
2022-10-02 23:09:06.621 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : exceptionOverrideClassName................................none
2022-10-02 23:09:06.621 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : healthCheckProperties................................{}
2022-10-02 23:09:06.622 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : healthCheckRegistry................................none
2022-10-02 23:09:06.622 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : idleTimeout................................600000
2022-10-02 23:09:06.622 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : initializationFailTimeout................................1
2022-10-02 23:09:06.622 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : isolateInternalQueries................................false
2022-10-02 23:09:06.622 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : jdbcUrl................................jdbc:sqlserver://sql-autoscale-2996.database.windows.net:1433;database=sqldb-autoscale-2996;user=dbadmin@sql-autoscale-2996;password=<masked>#777;encrypt=true;trustServerCertificate=false;hostNameInCertificate=*.database.windows.net;loginTimeout=30;
2022-10-02 23:09:06.622 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : keepaliveTime................................0
2022-10-02 23:09:06.622 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : leakDetectionThreshold................................0
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : maxLifetime................................1800000
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : maximumPoolSize................................10
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : metricRegistry................................none
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : metricsTrackerFactory................................com.zaxxer.hikari.metrics.micrometer.MicrometerMetricsTrackerFactory@5e8a459
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : minimumIdle................................10
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : password................................<masked>
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : poolName................................"HikariPool-1"
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : readOnly................................false
2022-10-02 23:09:06.623 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : registerMbeans................................false
2022-10-02 23:09:06.624 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : scheduledExecutor................................none
2022-10-02 23:09:06.624 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : schema................................none
2022-10-02 23:09:06.624 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : threadFactory................................internal
2022-10-02 23:09:06.624 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : transactionIsolation................................default
2022-10-02 23:09:06.624 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : username................................none
2022-10-02 23:09:06.624 DEBUG 1 --- [           main] com.zaxxer.hikari.HikariConfig           : validationTimeout................................5000
2022-10-02 23:09:06.624  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2022-10-02 23:09:07.726 DEBUG 1 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:1 ClientConnectionId: 1061c2f8-febf-4f1f-b9f6-86ee6dd22af4
2022-10-02 23:09:07.732  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2022-10-02 23:09:07.824  INFO 1 --- [           main] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.SQLServer2012Dialect
2022-10-02 23:09:07.832 DEBUG 1 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Pool stats (total=1, active=1, idle=0, waiting=0)
2022-10-02 23:09:08.027 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:2 ClientConnectionId: 5035df48-1a77-406f-95b1-99d289e2d70e
2022-10-02 23:09:08.227 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:3 ClientConnectionId: 2f01f8bb-e542-4351-9b5c-dcf7cd6084ef
2022-10-02 23:09:08.411 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:4 ClientConnectionId: fd8950e7-85e8-4ae2-80be-8d88d3a7c84d
2022-10-02 23:09:08.614 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:5 ClientConnectionId: 73205252-2e69-4a7d-b347-9ba7d8e6458f
2022-10-02 23:09:08.737 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:6 ClientConnectionId: 0814ccbd-f55c-4442-925d-be9046619eb5
2022-10-02 23:09:08.921 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:7 ClientConnectionId: f5fb5f48-1c99-4b0c-9b58-828627cfaac2
2022-10-02 23:09:09.119 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:8 ClientConnectionId: 730e1bf3-1e7b-4416-980e-9a64cda711ea
2022-10-02 23:09:09.319 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:9 ClientConnectionId: 23786119-d561-4da6-a59e-08ceb76c7065
2022-10-02 23:09:09.519 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection ConnectionID:10 ClientConnectionId: 9cc6c870-b6a2-4ee3-bc06-14d81bd03471
2022-10-02 23:09:09.519 DEBUG 1 --- [onnection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - After adding stats (total=10, active=0, idle=10, waiting=0)
2022-10-02 23:09:09.826  INFO 1 --- [           main] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2022-10-02 23:09:09.832  INFO 1 --- [           main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2022-10-02 23:09:10.419  WARN 1 --- [           main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2022-10-02 23:09:11.224  INFO 1 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 1 endpoint(s) beneath base path '/actuator'
2022-10-02 23:09:11.314  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2022-10-02 23:09:11.325  INFO 1 --- [           main] io.pomatti.app.books.BookApplication     : Started BookApplication in 11.913 seconds (JVM running for 12.911)
2022-10-02 23:09:11.412  INFO 1 --- [ionShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2022-10-02 23:09:11.415  INFO 1 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2022-10-02 23:09:11.415 DEBUG 1 --- [ionShutdownHook] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Before shutdown stats (total=10, active=0, idle=10, waiting=0)
2022-10-02 23:09:11.416 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:1 ClientConnectionId: 1061c2f8-febf-4f1f-b9f6-86ee6dd22af4: (connection evicted)
2022-10-02 23:09:11.416 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:2 ClientConnectionId: 5035df48-1a77-406f-95b1-99d289e2d70e: (connection evicted)
2022-10-02 23:09:11.417 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:3 ClientConnectionId: 2f01f8bb-e542-4351-9b5c-dcf7cd6084ef: (connection evicted)
2022-10-02 23:09:11.417 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:4 ClientConnectionId: fd8950e7-85e8-4ae2-80be-8d88d3a7c84d: (connection evicted)
2022-10-02 23:09:11.418 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:5 ClientConnectionId: 73205252-2e69-4a7d-b347-9ba7d8e6458f: (connection evicted)
2022-10-02 23:09:11.418 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:6 ClientConnectionId: 0814ccbd-f55c-4442-925d-be9046619eb5: (connection evicted)
2022-10-02 23:09:11.419 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:7 ClientConnectionId: f5fb5f48-1c99-4b0c-9b58-828627cfaac2: (connection evicted)
2022-10-02 23:09:11.419 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:8 ClientConnectionId: 730e1bf3-1e7b-4416-980e-9a64cda711ea: (connection evicted)
2022-10-02 23:09:11.420 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:9 ClientConnectionId: 23786119-d561-4da6-a59e-08ceb76c7065: (connection evicted)
2022-10-02 23:09:11.420 DEBUG 1 --- [nnection closer] com.zaxxer.hikari.pool.PoolBase          : HikariPool-1 - Closing connection ConnectionID:10 ClientConnectionId: 9cc6c870-b6a2-4ee3-bc06-14d81bd03471: (connection evicted)
2022-10-02 23:09:11.421 DEBUG 1 --- [ionShutdownHook] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - After shutdown stats (total=0, active=0, idle=0, waiting=0)
2022-10-02 23:09:11.421  INFO 1 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.

我的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.4</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>io.pomatti.app</groupId>
    <artifactId>order</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>order</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>17</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <!-- Spring -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
            <version>11.2.1.jre17</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

主類:

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
@RequestMapping("/api/books")
public class BookApplication {

    public static void main(String[] args) {
        SpringApplication.run(BookApplication.class, args);
    }

    @Autowired
    BookRepository repository;

    @PostMapping("/")
    public Book post(@RequestBody Book order) {
        var book = new Book();
        book.setName("Eternal Sunshine");
        book.setAuthor("Anonymous");
        return repository.save(book);
    }

}

Dockerfile:

# syntax=docker/dockerfile:1

FROM eclipse-temurin:17-jdk-jammy as builder
WORKDIR /opt/app
COPY .mvn/ .mvn
COPY mvnw pom.xml ./
RUN ./mvnw dependency:go-offline
COPY ./src ./src
RUN ./mvnw clean install
 
 
FROM eclipse-temurin:17-jre-jammy
WORKDIR /opt/app
EXPOSE 8080
COPY --from=builder /opt/app/target/*.jar /opt/app/*.jar
ENTRYPOINT ["java", "-jar", "/opt/app/*.jar" ]

uj5u.com熱心網友回復:

由于我為3s. 我已經將它增加到10s并解決了這個問題。

probes = [
  {
    type = "Liveness"
    httpGet = {
      path = "/actuator/health"
      port = var.ingress_target_port
      httpHeaders = [
        {
          name  = "Custom-Header"
          value = "Awesome"
        }
      ]
    }
    initialDelaySeconds = 10
    periodSeconds       = 5
  }
]

我通過查看每個容器可用的系統日志發現了這一點。

Spring Boot應用程式啟動后立即關閉

轉載請註明出處,本文鏈接:https://www.uj5u.com/caozuo/513214.html

標籤:爪哇弹簧靴码头工人休眠天蓝色容器应用

上一篇:HibernateCriteriaJoin與2個表

下一篇:即使在POST請求期間,JPA也會呼叫默認建構式

標籤雲
其他(157675) Python(38076) JavaScript(25376) Java(17977) C(15215) 區塊鏈(8255) C#(7972) AI(7469) 爪哇(7425) MySQL(7132) html(6777) 基礎類(6313) sql(6102) 熊猫(6058) PHP(5869) 数组(5741) R(5409) Linux(5327) 反应(5209) 腳本語言(PerlPython)(5129) 非技術區(4971) Android(4554) 数据框(4311) css(4259) 节点.js(4032) C語言(3288) json(3245) 列表(3129) 扑(3119) C++語言(3117) 安卓(2998) 打字稿(2995) VBA(2789) Java相關(2746) 疑難問題(2699) 细绳(2522) 單片機工控(2479) iOS(2429) ASP.NET(2402) MongoDB(2323) 麻木的(2285) 正则表达式(2254) 字典(2211) 循环(2198) 迅速(2185) 擅长(2169) 镖(2155) 功能(1967) .NET技术(1958) Web開發(1951) python-3.x(1918) HtmlCss(1915) 弹簧靴(1913) C++(1909) xml(1889) PostgreSQL(1872) .NETCore(1853) 谷歌表格(1846) Unity3D(1843) for循环(1842)

熱門瀏覽
  • CA和證書

    1、在 CentOS7 中使用 gpg 創建 RSA 非對稱密鑰對 gpg --gen-key #Centos上生成公鑰/密鑰對(存放在家目錄.gnupg/) 2、將 CentOS7 匯出的公鑰,拷貝到 CentOS8 中,在 CentOS8 中使用 CentOS7 的公鑰加密一個檔案 gpg -a ......

    uj5u.com 2020-09-10 00:09:53 more
  • Kubernetes K8S之資源控制器Job和CronJob詳解

    Kubernetes的資源控制器Job和CronJob詳解與示例 ......

    uj5u.com 2020-09-10 00:10:45 more
  • VMware下安裝CentOS

    VMware下安裝CentOS 一、軟硬體準備 1 Centos鏡像準備 1.1 CentOS鏡像下載地址 下載地址 1.2 CentOS鏡像下載程序 點擊下載地址進入如下圖的網站,選擇需要下載的版本,這里選擇的是Centos8,點擊如圖所示。 決定選擇Centos8后,選擇想要的鏡像源進行下載,此 ......

    uj5u.com 2020-09-10 00:12:10 more
  • 如何使用Grep命令查找多個字串

    如何使用Grep 命令查找多個字串 大家好,我是良許! 今天向大家介紹一個非常有用的技巧,那就是使用 grep 命令查找多個字串。 簡單介紹一下,grep 命令可以理解為是一個功能強大的命令列工具,可以用它在一個或多個輸入檔案中搜索與正則運算式相匹配的文本,然后再將每個匹配的文本用標準輸出的格式 ......

    uj5u.com 2020-09-10 00:12:28 more
  • git配置http代理

    git配置http代理 經常遇到克隆 github 慢的問題,這里記錄一下幾種配置 git 代理的方法,解決 clone github 過慢。 目錄 git配置代理 git單獨配置github代理 git配置全域代理 配置終端環境變數 git配置代理 主要使用 git config 命令 git單獨 ......

    uj5u.com 2020-09-10 00:12:33 more
  • Linux npm install 裝包時提示Error EACCES permission denied解

    npm install 裝包時提示Error EACCES permission denied解決辦法 ......

    uj5u.com 2020-09-10 00:12:53 more
  • Centos 7下安裝nginx,使用yum install nginx,提示沒有可用的軟體包

    Centos 7下安裝nginx,使用yum install nginx,提示沒有可用的軟體包。 18 (flaskApi) [root@67 flaskDemo]# yum -y install nginx 19 已加載插件:fastestmirror, langpacks 20 Loading ......

    uj5u.com 2020-09-10 00:13:13 more
  • Linux查看服務器暴力破解ssh IP

    在公網的服務器上經常遇到別人爆破你服務器的22埠,用來挖礦或者干其他嘿嘿嘿的事情~ 這種情況下正確的做法是: 修改默認ssh的22埠 使用設定密鑰登錄或者白名單ip登錄 建議服務器密碼為復雜密碼 創建普通用戶登錄服務器(root權限過大) 建立堡壘機,實作統一管理服務器 統計爆破IP [root ......

    uj5u.com 2020-09-10 00:13:17 more
  • CentOS 7系統常見快捷鍵操作方式

    Linux系統中一些常見的快捷方式,可有效提高操作效率,在某些時刻也能避免操作失誤帶來的問題。 ......

    uj5u.com 2020-09-10 00:13:31 more
  • CentOS 7作業系統目錄結構介紹

    作業系統存在著大量的資料檔案資訊,相應檔案資訊會存在于系統相應目錄中,為了更好的管理資料資訊,會將系統進行一些目錄規劃,不同目錄存放不同的資源。 ......

    uj5u.com 2020-09-10 00:13:35 more
最新发布
  • vim的常用命令

    Vim的6種基本模式 1. 普通模式在普通模式中,用的編輯器命令,比如移動游標,洗掉文本等等。這也是Vim啟動后的默認模式。這正好和許多新用戶期待的操作方式相反(大多數編輯器默認模式為插入模式)。 2. 插入模式在這個模式中,大多數按鍵都會向文本緩沖中插入文本。大多數新用戶希望文本編輯器編輯程序中一 ......

    uj5u.com 2023-04-20 08:43:21 more
  • vim的常用命令

    Vim的6種基本模式 1. 普通模式在普通模式中,用的編輯器命令,比如移動游標,洗掉文本等等。這也是Vim啟動后的默認模式。這正好和許多新用戶期待的操作方式相反(大多數編輯器默認模式為插入模式)。 2. 插入模式在這個模式中,大多數按鍵都會向文本緩沖中插入文本。大多數新用戶希望文本編輯器編輯程序中一 ......

    uj5u.com 2023-04-20 08:42:36 more
  • docker學習

    ###Docker概述 真實專案部署環境可能非常復雜,傳統發布專案一個只需要一個jar包,運行環境需要單獨部署。而通過Docker可將jar包和相關環境(如jdk,redis,Hadoop...)等打包到docker鏡像里,將鏡像發布到Docker倉庫,部署時下載發布的鏡像,直接運行發布的鏡像即可。 ......

    uj5u.com 2023-04-19 09:26:53 more
  • 設定Windows主機的瀏覽器為wls2的默認瀏覽器

    這里以Chrome為例。 1. 準備作業 wsl是可以使用Windows主機上安裝的exe程式,出于安全考慮,默認情況下改功能是無法使用。要使用的話,終端需要以管理員權限啟動。 我這里以Windows Terminal為例,介紹如何默認使用管理員權限打開終端,具體操作如下圖所示: 2. 操作 wsl ......

    uj5u.com 2023-04-19 09:25:49 more
  • docker學習

    ###Docker概述 真實專案部署環境可能非常復雜,傳統發布專案一個只需要一個jar包,運行環境需要單獨部署。而通過Docker可將jar包和相關環境(如jdk,redis,Hadoop...)等打包到docker鏡像里,將鏡像發布到Docker倉庫,部署時下載發布的鏡像,直接運行發布的鏡像即可。 ......

    uj5u.com 2023-04-19 09:19:04 more
  • Linux學習筆記

    IP地址和主機名 IP地址 ifconfig可以用來查詢本機的IP地址,如果不能使用,可以通過install net-tools安裝。 Centos系統下ens33表示主網卡;inet后表示IP地址;lo表示本地回環網卡; 127.0.0.1表示代指本機;0.0.0.0可以用于代指本機,同時在放行設 ......

    uj5u.com 2023-04-18 06:52:01 more
  • 解決linux系統的kdump服務無法啟動的問題

    問題:專案麒麟系統服務器的kdump服務無法啟動,沒有相關日志無法定位問題。 1、查看服務狀態是關閉的,重啟系統也無法啟動 systemctl status kdump 2、修改grub引數,修改“crashkernel”為“512M(有的機器數值太大太小都會導致報錯,建議從128M開始試,或者加個 ......

    uj5u.com 2023-04-12 09:59:50 more
  • 解決linux系統的kdump服務無法啟動的問題

    問題:專案麒麟系統服務器的kdump服務無法啟動,沒有相關日志無法定位問題。 1、查看服務狀態是關閉的,重啟系統也無法啟動 systemctl status kdump 2、修改grub引數,修改“crashkernel”為“512M(有的機器數值太大太小都會導致報錯,建議從128M開始試,或者加個 ......

    uj5u.com 2023-04-12 09:59:01 more
  • 你是不是暴露了?

    作者:袁首京 原創文章,轉載時請保留此宣告,并給出原文連接。 如果您是計算機相關從業人員,那么應該經歷不止一次網路安全專項檢查了,你肯定是收到過資訊系統技術檢測報告,要求你加強風險監測,確保你提供的系統服務堅實可靠了。 沒檢測到問題還好,檢測到問題的話,有些處理起來還是挺麻煩的,尤其是線上正在運行的 ......

    uj5u.com 2023-04-05 16:52:56 more
  • 細節拉滿,80 張圖帶你一步一步推演 slab 記憶體池的設計與實作

    1. 前文回顧 在之前的幾篇記憶體管理系列文章中,筆者帶大家從宏觀角度完整地梳理了一遍 Linux 記憶體分配的整個鏈路,本文的主題依然是記憶體分配,這一次我們會從微觀的角度來探秘一下 Linux 內核中用于零散小記憶體塊分配的記憶體池 —— slab 分配器。 在本小節中,筆者還是按照以往的風格先帶大家簡單 ......

    uj5u.com 2023-04-05 16:44:11 more