diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/Dockerfile b/spring-cloud/spring-cloud-kubernetes/liveness-example/Dockerfile new file mode 100644 index 0000000000..0fc0a9bd64 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/Dockerfile @@ -0,0 +1,11 @@ +FROM openjdk:8-jdk-alpine + +# Create app directory +RUN mkdir -p /usr/opt/service + +# Copy app +COPY target/*.jar /usr/opt/service/service.jar + +EXPOSE 8080 + +ENTRYPOINT exec java -jar /usr/opt/service/service.jar \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/pom.xml b/spring-cloud/spring-cloud-kubernetes/liveness-example/pom.xml new file mode 100644 index 0000000000..e963dafe67 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/pom.xml @@ -0,0 +1,51 @@ + + + + + org.springframework.boot + spring-boot-starter-parent + 1.5.17.RELEASE + + + + 4.0.0 + + liveness-example + 1.0-SNAPSHOT + + + UTF-8 + UTF-8 + 1.8 + + + + + org.springframework.boot + spring-boot-starter-web + + + + org.springframework.boot + spring-boot-starter-actuator + + + + org.springframework.boot + spring-boot-starter-test + test + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + + \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/java/com/baeldung/liveness/Application.java b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/java/com/baeldung/liveness/Application.java new file mode 100644 index 0000000000..2cfa242965 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/java/com/baeldung/liveness/Application.java @@ -0,0 +1,12 @@ +package com.baeldung.liveness; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class Application { + + public static void main(String[] args) { + SpringApplication.run(Application.class, args); + } +} \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/java/com/baeldung/liveness/health/CustomHealthIndicator.java b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/java/com/baeldung/liveness/health/CustomHealthIndicator.java new file mode 100644 index 0000000000..715c4cb178 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/java/com/baeldung/liveness/health/CustomHealthIndicator.java @@ -0,0 +1,27 @@ +package com.baeldung.liveness.health; + +import org.springframework.boot.actuate.health.Health; +import org.springframework.boot.actuate.health.HealthIndicator; +import org.springframework.stereotype.Component; + +import java.util.concurrent.Executors; +import java.util.concurrent.ScheduledExecutorService; +import java.util.concurrent.TimeUnit; + +@Component +public class CustomHealthIndicator implements HealthIndicator { + + private boolean isHealthy = true; + + public CustomHealthIndicator() { + ScheduledExecutorService scheduled = Executors.newSingleThreadScheduledExecutor(); + scheduled.schedule(() -> { + isHealthy = false; + }, 30, TimeUnit.SECONDS); + } + + @Override + public Health health() { + return isHealthy ? Health.up().build() : Health.down().build(); + } +} diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/resources/resources/application.properties b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/resources/resources/application.properties new file mode 100644 index 0000000000..a3ac65cee5 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/resources/resources/application.properties @@ -0,0 +1 @@ +server.port=8080 \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/resources/resources/logback.xml b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/resources/resources/logback.xml new file mode 100644 index 0000000000..7d900d8ea8 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/main/resources/resources/logback.xml @@ -0,0 +1,13 @@ + + + + + %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + + + + + + \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/liveness-example/src/test/java/com/baeldung/SpringContextIntegrationTest.java b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/test/java/com/baeldung/SpringContextIntegrationTest.java new file mode 100644 index 0000000000..60b4a28aa6 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/liveness-example/src/test/java/com/baeldung/SpringContextIntegrationTest.java @@ -0,0 +1,17 @@ +package com.baeldung; + +import com.baeldung.liveness.Application; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.junit4.SpringRunner; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = Application.class) +public class SpringContextIntegrationTest { + + @Test + public void contextLoads() { + } + +} diff --git a/spring-cloud/spring-cloud-kubernetes/object-configurations/liveness-example-k8s-template.yaml b/spring-cloud/spring-cloud-kubernetes/object-configurations/liveness-example-k8s-template.yaml new file mode 100644 index 0000000000..9fd3fd5674 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/object-configurations/liveness-example-k8s-template.yaml @@ -0,0 +1,54 @@ +apiVersion: v1 +kind: Service +metadata: + name: liveness-example +spec: + selector: + app: liveness-example + ports: + - port: 8080 + +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: liveness-example +spec: + selector: + matchLabels: + app: liveness-example + replicas: 1 + strategy: + rollingUpdate: + maxUnavailable: 0 + template: + metadata: + labels: + app: liveness-example + spec: + containers: + - name: liveness-example + image: dbdock/liveness-example:1.0.0 + imagePullPolicy: IfNotPresent + resources: + requests: + memory: 400Mi + cpu: 400m + ports: + - containerPort: 8080 + readinessProbe: + httpGet: + path: /health + port: 8080 + initialDelaySeconds: 10 + timeoutSeconds: 2 + periodSeconds: 3 + failureThreshold: 1 + livenessProbe: + httpGet: + path: /health + port: 8080 + initialDelaySeconds: 20 + timeoutSeconds: 2 + periodSeconds: 8 + failureThreshold: 1 \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/object-configurations/readiness-example-k8s-template.yaml b/spring-cloud/spring-cloud-kubernetes/object-configurations/readiness-example-k8s-template.yaml new file mode 100644 index 0000000000..010c468107 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/object-configurations/readiness-example-k8s-template.yaml @@ -0,0 +1,54 @@ +apiVersion: v1 +kind: Service +metadata: + name: readiness-example +spec: + selector: + app: readiness-example + ports: + - port: 8080 + +--- +apiVersion: apps/v1 +kind: Deployment +metadata: + name: readiness-example +spec: + selector: + matchLabels: + app: readiness-example + replicas: 1 + strategy: + rollingUpdate: + maxUnavailable: 0 + template: + metadata: + labels: + app: readiness-example + spec: + containers: + - name: readiness-example + image: dbdock/readiness-example:1.0.0 + imagePullPolicy: IfNotPresent + resources: + requests: + memory: 400Mi + cpu: 400m + ports: + - containerPort: 8080 + readinessProbe: + httpGet: + path: /health + port: 8080 + initialDelaySeconds: 40 + timeoutSeconds: 2 + periodSeconds: 3 + failureThreshold: 5 + livenessProbe: + httpGet: + path: /health + port: 8080 + initialDelaySeconds: 100 + timeoutSeconds: 2 + periodSeconds: 8 + failureThreshold: 1 \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/pom.xml b/spring-cloud/spring-cloud-kubernetes/pom.xml index 984b3811dd..de0718633e 100644 --- a/spring-cloud/spring-cloud-kubernetes/pom.xml +++ b/spring-cloud/spring-cloud-kubernetes/pom.xml @@ -11,6 +11,8 @@ demo-frontend demo-backend + liveness-example + readiness-example diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/Dockerfile b/spring-cloud/spring-cloud-kubernetes/readiness-example/Dockerfile new file mode 100644 index 0000000000..0fc0a9bd64 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/Dockerfile @@ -0,0 +1,11 @@ +FROM openjdk:8-jdk-alpine + +# Create app directory +RUN mkdir -p /usr/opt/service + +# Copy app +COPY target/*.jar /usr/opt/service/service.jar + +EXPOSE 8080 + +ENTRYPOINT exec java -jar /usr/opt/service/service.jar \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/pom.xml b/spring-cloud/spring-cloud-kubernetes/readiness-example/pom.xml new file mode 100644 index 0000000000..fa85120d21 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/pom.xml @@ -0,0 +1,49 @@ + + + + org.springframework.boot + spring-boot-starter-parent + 1.5.17.RELEASE + + + 4.0.0 + + readiness-example + 1.0-SNAPSHOT + + + UTF-8 + UTF-8 + 1.8 + + + + + org.springframework.boot + spring-boot-starter-web + + + + org.springframework.boot + spring-boot-starter-actuator + + + + org.springframework.boot + spring-boot-starter-test + test + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + + \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/Application.java b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/Application.java new file mode 100644 index 0000000000..11ffe577c3 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/Application.java @@ -0,0 +1,12 @@ +package com.baeldung.readiness; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class Application { + + public static void main(String[] args) { + SpringApplication.run(Application.class, args); + } +} \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/health/CustomHealthIndicator.java b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/health/CustomHealthIndicator.java new file mode 100644 index 0000000000..d37a1905f6 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/java/com/baeldung/readiness/health/CustomHealthIndicator.java @@ -0,0 +1,27 @@ +package com.baeldung.readiness.health; + +import org.springframework.boot.actuate.health.Health; +import org.springframework.boot.actuate.health.HealthIndicator; +import org.springframework.stereotype.Component; + +import java.util.concurrent.Executors; +import java.util.concurrent.ScheduledExecutorService; +import java.util.concurrent.TimeUnit; + +@Component +public class CustomHealthIndicator implements HealthIndicator { + + private boolean isHealthy = false; + + public CustomHealthIndicator() { + ScheduledExecutorService scheduled = Executors.newSingleThreadScheduledExecutor(); + scheduled.schedule(() -> { + isHealthy = true; + }, 40, TimeUnit.SECONDS); + } + + @Override + public Health health() { + return isHealthy ? Health.up().build() : Health.down().build(); + } +} diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/application.properties b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/application.properties new file mode 100644 index 0000000000..a3ac65cee5 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/application.properties @@ -0,0 +1 @@ +server.port=8080 \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/logback.xml b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/logback.xml new file mode 100644 index 0000000000..7d900d8ea8 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/main/resources/resources/logback.xml @@ -0,0 +1,13 @@ + + + + + %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + + + + + + \ No newline at end of file diff --git a/spring-cloud/spring-cloud-kubernetes/readiness-example/src/test/java/com/baeldung/SpringContextIntegrationTest.java b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/test/java/com/baeldung/SpringContextIntegrationTest.java new file mode 100644 index 0000000000..18458182c7 --- /dev/null +++ b/spring-cloud/spring-cloud-kubernetes/readiness-example/src/test/java/com/baeldung/SpringContextIntegrationTest.java @@ -0,0 +1,17 @@ +package com.baeldung; + +import com.baeldung.readiness.Application; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.junit4.SpringRunner; + +@RunWith(SpringRunner.class) +@SpringBootTest(classes = Application.class) +public class SpringContextIntegrationTest { + + @Test + public void contextLoads() { + } + +}