普罗米修斯-连接：没有通往主机的路由。即使服务已经停止

Question

我正在使用docker和Spring。我创建的Rest服务运行良好。（myIP是代码和图像中的本地主机）。

我的docker配置如下图所示。

docker-compose.yml

  mysql:
    image: mysql:8.0.22
    container_name: mysql
    ports:
      - 3306:3306
    environment:
      MYSQL_USER: atendente
      MYSQL_PASSWORD: atendente
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: plano_saude_db
  jaeger:
    image: jaegertracing/all-in-one:1.21
    container_name: jaeger
    ports:
      - 5775:5775/udp
      - 6831:6831/udp
      - 5778:5778
      - 16686:16686
      - 14268:14268
      - 14250:14250
      - 9411:9411
  prometheus:
    image: prom/prometheus:v2.24.1
    container_name: prometheus
    ports:
      - 9090:9090
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    command:
      '--config.file=/etc/prometheus/prometheus.yml'

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:9090']
  - job_name: 'planosaude-sys'
    scrape_interval: 5s
    metrics_path: '/actuator/prometheus'
    static_configs:
      - targets: ['<myIp>:8080']

访问http://myip:8080/Actuator/Prometheus，我得到以下信息：

nmethods‘“，}1.2288 e8 jvm_memory_max_bytes{area=”heap“，id=”g1 Survivor space“，}-1.0 jvm_memory_max_bytes{area=”heap“，id=”g1 Old gen“，}1.579155456 e9 jvm_memory_max_bytes{area=”nonheap“，id=”metaspace“，}-1.0 jvm_memory_max_bytes{area=”nonheap“，id=”non-n methods“，}Eden space”,}-1.0 jvm_memory_max_bytes{area=“nonheap”,id=“compressed Class space”,}1.073741824 e9 jvm_memory_max_bytes{area=“nonheap”,id=“codeheap'non-profiled nmethods”,}1.2288 e8

jvm_threads_states_threads{state=“blocked”，}0.0 jvm_threads_states_threads{state=“waiting”，}5.0 jvm_threads_states_threads{state=“timed-waiting”，}6.0 jvm_threads_states_threads{state=“new”，}0.0 jvm_threads_states_threads{state=“terminated”，}0.0 jvm_threads_states_threads

logback_events_total{level=“debug”，}0.0 logback_events_total{level=“error”，}0.0 logback_events_total{level=“trace”，}0.0 logback_events_total{level=“info”，}15.0

hikaricp_connections_usage_seconds_sum{pool=“hikaripool-1”,}0.0

0.0 jvm_buffer_total_capacity_bytes{id=“mapped”，}0.0 jvm_buffer_total_capacity_bytes{id=“direct”，}32768.0

nmethods‘“，}1.1297792 e7 jvm_memory_used_bytes{area=”heap“，id=”G1幸存者空间“，}1651760.0 jvm_memory_used_bytes{area=”heap“，id=”G1 Old gen“，}2.7873792 e7 jvm_memory_used_bytes{area=”nonheap“，id=”metaspace“，}7.0095672 e7 jvm_memory_used_bytes{area=”nonheap“，id=”codeheap“”heap“，id=”G1 Eden Space“，}1.2582912 e7 jvm_memory_used_bytes{area=”nonheap“，id=”压缩类空间“，}8883800.0 jvm_memory_used_bytes{area=”nonheap“，id=”codeheap'non-profiled nmethods“，}4293632.0

jvm_buffer_count_buffers{id=“mapped”,}0.0 jvm_buffer_count_buffers{id=“direct”,}4.0

hikaricp_connections_creation_seconds_sum{pool=“hikaripool-1”,}0.943

1.0http_server_requests_seconds_sum{exception=“none”,method=“get”,outcome=“success”,status=“200”,uri=“/actuator/prometheus”,}2.7254424

0.0

hikaricp_connections_acquire_seconds_sum{pool=“hikaripool-1”,}0.0

jvm_buffer_memory_used_bytes{id=“mapped”，}0.0 jvm_buffer_memory_used_bytes{id=“direct”，}32768.0

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>2.5.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.planosaude</groupId>
    <artifactId>planosaude-sys</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>planosaude-sys</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>io.micrometer</groupId>
            <artifactId>micrometer-registry-prometheus</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-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
                
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

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

</project>

如果我使用host.docker.internal来代替，它就可以工作了。

Answer 1

在字段 中，应该使用MySQL。

如《组网》中所述

服务的每个容器都加入默认网络，该网络上的其他容器都可以访问，并且可以在与容器名称相同的主机名处发现。