Spring 启动应用程序无法在 Kubernetes 集群上运行
Spring Boot app not working on Kubernetes cluster
我正在使用 jhipster 开发具有微服务架构的应用程序。即使我收到此警告，我也可以 运行 我的服务处于开发模式，但是当我 运行 在 kubernetes 集群上收到此警告 pod 时，它会在循环中一遍又一遍地重新启动。我有 4 个微服务和一个网关。全部都一样。
提前谢谢你。
这是警告：
2020-05-06 06:06:51.415 WARN 1 --- [scoveryClient-1] c.netflix.discovery.TimedSupervisorTask : task supervisor timed out
java.util.concurrent.TimeoutException: null
at java.base/java.util.concurrent.FutureTask.get(Unknown Source)
at com.netflix.discovery.TimedSupervisorTask.run(TimedSupervisorTask.java:68)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
application.yml 文件：
# ===================================================================
# Spring Boot configuration.
#
# This configuration will be overridden by the Spring profile you use,
# for example application-dev.yml if you use the "dev" profile.
#
# More information on profiles: https://www.jhipster.tech/profiles/
# More information on configuration properties: https://www.jhipster.tech/common-application-properties/
# ===================================================================
# ===================================================================
# Standard Spring Boot properties.
# Full reference is available at:
# http://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html
# ===================================================================
eureka:
client:
enabled: true
healthcheck:
enabled: true
fetch-registry: true
register-with-eureka: true
instance-info-replication-interval-seconds: 10
registry-fetch-interval-seconds: 10
instance:
appname: derinconfiguration
instanceId: derinconfiguration:${spring.application.instance-id:${random.value}}
lease-renewal-interval-in-seconds: 5
lease-expiration-duration-in-seconds: 10
status-page-url-path: ${management.endpoints.web.base-path}/info
health-check-url-path: ${management.endpoints.web.base-path}/health
metadata-map:
zone: primary # This is needed for the load balancer
profile: ${spring.profiles.active}
version: #project.version#
git-version: ${git.commit.id.describe:}
git-commit: ${git.commit.id.abbrev:}
git-branch: ${git.branch:}
# See https://github.com/Netflix/Hystrix/wiki/Configuration
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 30000
ribbon:
ReadTimeout: 60000
connection-timeout: 3000
eureka:
enabled: true
zuul:
ignoredServices: '*'
host:
time-to-live: -1
connect-timeout-millis: 5000
max-per-route-connections: 10000
max-total-connections: 5000
socket-timeout-millis: 60000
semaphore:
max-semaphores: 500
management:
endpoints:
web:
base-path: /management
exposure:
include: ['configprops', 'env', 'health', 'info', 'jhimetrics', 'logfile', 'loggers', 'prometheus', 'threaddump']
endpoint:
health:
show-details: when_authorized
roles: 'ROLE_ADMIN'
jhimetrics:
enabled: true
info:
git:
mode: full
health:
mail:
enabled: false # When using the MailService, configure an SMTP server and set this to true
metrics:
export:
# Prometheus is the default metrics backend
prometheus:
enabled: true
step: 60
enable:
http: true
jvm: true
logback: true
process: true
system: true
distribution:
percentiles-histogram:
all: true
percentiles:
all: 0, 0.5, 0.75, 0.95, 0.99, 1.0
tags:
application: ${spring.application.name}
web:
server:
request:
autotime:
enabled: true
spring:
autoconfigure:
exclude: org.springframework.boot.actuate.autoconfigure.metrics.jdbc.DataSourcePoolMetricsAutoConfiguration
application:
name: derinconfiguration
jmx:
enabled: false
data:
jpa:
repositories:
bootstrap-mode: deferred
jpa:
open-in-view: false
properties:
hibernate.jdbc.time_zone: UTC
hibernate.id.new_generator_mappings: true
hibernate.connection.provider_disables_autocommit: true
hibernate.cache.use_second_level_cache: true
hibernate.cache.use_query_cache: false
hibernate.generate_statistics: false
# modify batch size as necessary
hibernate.jdbc.batch_size: 25
hibernate.order_inserts: true
hibernate.order_updates: true
hibernate.query.fail_on_pagination_over_collection_fetch: true
hibernate.query.in_clause_parameter_padding: true
hibernate.cache.region.factory_class: com.hazelcast.hibernate.HazelcastCacheRegionFactory
hibernate.cache.use_minimal_puts: true
hibernate.cache.hazelcast.instance_name: derinconfiguration
hibernate.cache.hazelcast.use_lite_member: true
hibernate:
ddl-auto: none
naming:
physical-strategy: org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy
implicit-strategy: org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy
messages:
basename: i18n/messages
main:
allow-bean-definition-overriding: true
mvc:
favicon:
enabled: false
task:
execution:
thread-name-prefix: derinconfiguration-task-
pool:
core-size: 2
max-size: 50
queue-capacity: 10000
scheduling:
thread-name-prefix: derinconfiguration-scheduling-
pool:
size: 2
thymeleaf:
mode: HTML
output:
ansi:
console-available: true
security:
oauth2:
client:
access-token-uri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/token
user-authorization-uri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/auth
client-id: web_app
client-secret: web_app
scope: openid profile email
resource:
filter-order: 3
user-info-uri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/userinfo
server:
servlet:
session:
cookie:
http-only: true
# Properties to be exposed on the /info management endpoint
info:
# Comma separated list of profiles that will trigger the ribbon to show
display-ribbon-on-profiles: 'dev'
# ===================================================================
# JHipster specific properties
#
# Full reference is available at: https://www.jhipster.tech/common-application-properties/
# ===================================================================
jhipster:
clientApp:
name: 'derinconfigurationApp'
# By default CORS is disabled. Uncomment to enable.
# cors:
# allowed-origins: "*"
# allowed-methods: "*"
# allowed-headers: "*"
# exposed-headers: "Authorization,Link,X-Total-Count"
# allow-credentials: true
# max-age: 1800
mail:
from: derinconfiguration@localhost
swagger:
default-include-pattern: /api/.*
title: derinconfiguration API
description: derinconfiguration API documentation
version: 0.0.1
terms-of-service-url:
contact-name:
contact-url:
contact-email:
license:
license-url:
kafka:
bootstrap-servers: localhost:9092
consumer:
key.deserializer: org.apache.kafka.common.serialization.StringDeserializer
value.deserializer: org.apache.kafka.common.serialization.StringDeserializer
group.id: derinconfiguration
auto.offset.reset: earliest
producer:
key.serializer: org.apache.kafka.common.serialization.StringSerializer
value.serializer: org.apache.kafka.common.serialization.StringSerializer
# ===================================================================
# Application specific properties
# Add your own application properties here, see the ApplicationProperties class
# to have type-safe configuration, like in the JHipsterProperties above
#
# More documentation is available at:
# https://www.jhipster.tech/common-application-properties/
# ===================================================================
# application:
Kubernetes 配置：
apiVersion: apps/v1
kind: Deployment
metadata:
name: derinconfiguration
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: derinconfiguration
version: 'v1'
template:
metadata:
labels:
app: derinconfiguration
version: 'v1'
spec:
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- podAffinityTerm:
labelSelector:
matchExpressions:
- key: app
operator: In
values:
- derinconfiguration
topologyKey: kubernetes.io/hostname
weight: 100
initContainers:
- name: init-ds
image: busybox:latest
command:
- '/bin/sh'
- '-c'
- |
while true
do
rt=$(nc -z -w 1 192.168.1.156 5432)
if [ $? -eq 0 ]; then
echo "DB is UP"
break
fi
echo "DB is not yet reachable;sleep for 10s before retry"
sleep 10
done
containers:
- name: derinconfiguration-app
image: 192.168.1.150:5000/derin/derinconfiguration
env:
- name: SPRING_PROFILES_ACTIVE
value: prod
- name: SPRING_CLOUD_CONFIG_URI
value: http://admin:${jhipster.registry.password}@jhipster-registry.default.svc.cluster.local:8761/config
- name: JHIPSTER_REGISTRY_PASSWORD
valueFrom:
secretKeyRef:
name: registry-secret
key: registry-admin-password
- name: EUREKA_CLIENT_SERVICE_URL_DEFAULTZONE
value: http://admin:${jhipster.registry.password}@jhipster-registry.default.svc.cluster.local:8761/eureka/
- name: SPRING_DATASOURCE_URL
value: jdbc:postgresql://192.168.1.156:5432/derinfw
- name: SPRING_DATASOURCE_USERNAME
value: admin
- name: SPRING_DATASOURCE_PASSWORD
valueFrom:
secretKeyRef:
name: postgresql-secret
key: postgresql-admin-password
- name: KAFKA_CONSUMER_KEY_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: KAFKA_CONSUMER_VALUE_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: KAFKA_CONSUMER_BOOTSTRAP_SERVERS
value: 'jhipster-kafka.default.svc.cluster.local:9092'
- name: KAFKA_CONSUMER_GROUP_ID
value: 'derinconfiguration'
- name: KAFKA_CONSUMER_AUTO_OFFSET_RESET
value: 'earliest'
- name: KAFKA_PRODUCER_BOOTSTRAP_SERVERS
value: 'jhipster-kafka.default.svc.cluster.local:9092'
- name: KAFKA_PRODUCER_KEY_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: KAFKA_PRODUCER_VALUE_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: JHIPSTER_METRICS_LOGS_ENABLED
value: 'true'
- name: JHIPSTER_LOGGING_LOGSTASH_ENABLED
value: 'true'
- name: JHIPSTER_LOGGING_LOGSTASH_HOST
value: jhipster-logstash
- name: SPRING_ZIPKIN_ENABLED
value: 'true'
- name: SPRING_ZIPKIN_BASE_URL
value: http://jhipster-zipkin
- name: SPRING_SLEUTH_PROPAGATION_KEYS
value: 'x-request-id,x-ot-span-context'
- name: JAVA_OPTS
value: ' -Xmx256m -Xms256m'
resources:
requests:
memory: '512Mi'
cpu: '500m'
limits:
memory: '1Gi'
cpu: '1'
ports:
- name: http
containerPort: 8084
readinessProbe:
httpGet:
path: /management/health
port: http
initialDelaySeconds: 20
periodSeconds: 15
failureThreshold: 6
livenessProbe:
httpGet:
path: /management/health
port: http
initialDelaySeconds: 120
我怀疑你的健康端点 /management/health 无法 return 200 提示 K8s 重新创建 Pod。
have you been trying disabling readiness and liveness probes? – Nick
After I removed readiness and liveness probes, it working now. It seems that needs extra time to run. – mehmet
这是很常见的情况，由于某种原因需要很长时间才能探测到 return 结果。
有时，您必须处理遗留应用程序，这些应用程序在首次初始化时可能需要额外的启动时间。在这种情况下，在不影响对激发此类探测的死锁的快速响应的情况下设置活性探测参数可能会很棘手。
诀窍是使用相同的命令、HTTP 或 TCP 检查设置启动探测，failureThreshold * periodSeconds 足够长以覆盖最坏情况下的启动时间。
livenessProbe:
httpGet:
path: /healthz
port: liveness-port
failureThreshold: 1
periodSeconds: 10
Probes 有许多字段可用于更精确地控制活动和就绪检查的行为：
initialDelaySeconds：容器启动后到启动活动或就绪探测之前的秒数。默认为 0 秒。最小值为 0。
periodSeconds：执行探测的频率（以秒为单位）。默认为 10 秒。最小值为 1。
查看您的 YAML 文件，我会首先对 readiness probe 进行更改
readinessProbe:
httpGet:
path: /management/health
initialDelaySeconds: 20
periodSeconds: 15
failureThreshold: 6
livenessProbe:
httpGet:
path: /management/health
initialDelaySeconds: 120
这意味着在 20+(6*15)=110 秒后，就绪探测将失败。同时，liveness 探测延迟设置为 120 秒。我将 readiness 探测的延迟增加到与 livenes 相同的值，以防止流量发送到未完全启动且 运行 的 Pod 的情况。 =26=]
以下是来自 Kubernetes official documentation 关于探测的一些信息：
活性探测
许多应用程序 运行 很长一段时间最终都会转换为损坏状态，并且只能通过重新启动才能恢复。 Kubernetes 提供了 liveness probes 来检测和补救这种情况。
就绪探测
有时，应用程序暂时无法处理流量。例如，应用程序可能需要在启动时加载大量数据或配置文件，或者在启动后依赖于外部服务。在这种情况下，您不想终止应用程序，但也不想向它发送请求。 Kubernetes 提供就绪探测器来检测和缓解这些情况。报告未就绪的容器的 Pod 不会通过 Kubernetes 服务接收流量。
Note: Readiness probes runs on the container during its whole lifecycle.
就绪探测器的配置类似于活动探测器。唯一的区别是您使用 readinessProbe 字段而不是 livenessProbe 字段。
readinessProbe:
exec:
command:
- cat
- /tmp/healthy
initialDelaySeconds: 5
periodSeconds: 5
希望对您有所帮助。
我正在使用 jhipster 开发具有微服务架构的应用程序。即使我收到此警告，我也可以 运行 我的服务处于开发模式，但是当我 运行 在 kubernetes 集群上收到此警告 pod 时，它会在循环中一遍又一遍地重新启动。我有 4 个微服务和一个网关。全部都一样。 提前谢谢你。
这是警告：
2020-05-06 06:06:51.415 WARN 1 --- [scoveryClient-1] c.netflix.discovery.TimedSupervisorTask : task supervisor timed out
java.util.concurrent.TimeoutException: null
at java.base/java.util.concurrent.FutureTask.get(Unknown Source)
at com.netflix.discovery.TimedSupervisorTask.run(TimedSupervisorTask.java:68)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
application.yml 文件：
# ===================================================================
# Spring Boot configuration.
#
# This configuration will be overridden by the Spring profile you use,
# for example application-dev.yml if you use the "dev" profile.
#
# More information on profiles: https://www.jhipster.tech/profiles/
# More information on configuration properties: https://www.jhipster.tech/common-application-properties/
# ===================================================================
# ===================================================================
# Standard Spring Boot properties.
# Full reference is available at:
# http://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html
# ===================================================================
eureka:
client:
enabled: true
healthcheck:
enabled: true
fetch-registry: true
register-with-eureka: true
instance-info-replication-interval-seconds: 10
registry-fetch-interval-seconds: 10
instance:
appname: derinconfiguration
instanceId: derinconfiguration:${spring.application.instance-id:${random.value}}
lease-renewal-interval-in-seconds: 5
lease-expiration-duration-in-seconds: 10
status-page-url-path: ${management.endpoints.web.base-path}/info
health-check-url-path: ${management.endpoints.web.base-path}/health
metadata-map:
zone: primary # This is needed for the load balancer
profile: ${spring.profiles.active}
version: #project.version#
git-version: ${git.commit.id.describe:}
git-commit: ${git.commit.id.abbrev:}
git-branch: ${git.branch:}
# See https://github.com/Netflix/Hystrix/wiki/Configuration
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 30000
ribbon:
ReadTimeout: 60000
connection-timeout: 3000
eureka:
enabled: true
zuul:
ignoredServices: '*'
host:
time-to-live: -1
connect-timeout-millis: 5000
max-per-route-connections: 10000
max-total-connections: 5000
socket-timeout-millis: 60000
semaphore:
max-semaphores: 500
management:
endpoints:
web:
base-path: /management
exposure:
include: ['configprops', 'env', 'health', 'info', 'jhimetrics', 'logfile', 'loggers', 'prometheus', 'threaddump']
endpoint:
health:
show-details: when_authorized
roles: 'ROLE_ADMIN'
jhimetrics:
enabled: true
info:
git:
mode: full
health:
mail:
enabled: false # When using the MailService, configure an SMTP server and set this to true
metrics:
export:
# Prometheus is the default metrics backend
prometheus:
enabled: true
step: 60
enable:
http: true
jvm: true
logback: true
process: true
system: true
distribution:
percentiles-histogram:
all: true
percentiles:
all: 0, 0.5, 0.75, 0.95, 0.99, 1.0
tags:
application: ${spring.application.name}
web:
server:
request:
autotime:
enabled: true
spring:
autoconfigure:
exclude: org.springframework.boot.actuate.autoconfigure.metrics.jdbc.DataSourcePoolMetricsAutoConfiguration
application:
name: derinconfiguration
jmx:
enabled: false
data:
jpa:
repositories:
bootstrap-mode: deferred
jpa:
open-in-view: false
properties:
hibernate.jdbc.time_zone: UTC
hibernate.id.new_generator_mappings: true
hibernate.connection.provider_disables_autocommit: true
hibernate.cache.use_second_level_cache: true
hibernate.cache.use_query_cache: false
hibernate.generate_statistics: false
# modify batch size as necessary
hibernate.jdbc.batch_size: 25
hibernate.order_inserts: true
hibernate.order_updates: true
hibernate.query.fail_on_pagination_over_collection_fetch: true
hibernate.query.in_clause_parameter_padding: true
hibernate.cache.region.factory_class: com.hazelcast.hibernate.HazelcastCacheRegionFactory
hibernate.cache.use_minimal_puts: true
hibernate.cache.hazelcast.instance_name: derinconfiguration
hibernate.cache.hazelcast.use_lite_member: true
hibernate:
ddl-auto: none
naming:
physical-strategy: org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy
implicit-strategy: org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy
messages:
basename: i18n/messages
main:
allow-bean-definition-overriding: true
mvc:
favicon:
enabled: false
task:
execution:
thread-name-prefix: derinconfiguration-task-
pool:
core-size: 2
max-size: 50
queue-capacity: 10000
scheduling:
thread-name-prefix: derinconfiguration-scheduling-
pool:
size: 2
thymeleaf:
mode: HTML
output:
ansi:
console-available: true
security:
oauth2:
client:
access-token-uri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/token
user-authorization-uri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/auth
client-id: web_app
client-secret: web_app
scope: openid profile email
resource:
filter-order: 3
user-info-uri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/userinfo
server:
servlet:
session:
cookie:
http-only: true
# Properties to be exposed on the /info management endpoint
info:
# Comma separated list of profiles that will trigger the ribbon to show
display-ribbon-on-profiles: 'dev'
# ===================================================================
# JHipster specific properties
#
# Full reference is available at: https://www.jhipster.tech/common-application-properties/
# ===================================================================
jhipster:
clientApp:
name: 'derinconfigurationApp'
# By default CORS is disabled. Uncomment to enable.
# cors:
# allowed-origins: "*"
# allowed-methods: "*"
# allowed-headers: "*"
# exposed-headers: "Authorization,Link,X-Total-Count"
# allow-credentials: true
# max-age: 1800
mail:
from: derinconfiguration@localhost
swagger:
default-include-pattern: /api/.*
title: derinconfiguration API
description: derinconfiguration API documentation
version: 0.0.1
terms-of-service-url:
contact-name:
contact-url:
contact-email:
license:
license-url:
kafka:
bootstrap-servers: localhost:9092
consumer:
key.deserializer: org.apache.kafka.common.serialization.StringDeserializer
value.deserializer: org.apache.kafka.common.serialization.StringDeserializer
group.id: derinconfiguration
auto.offset.reset: earliest
producer:
key.serializer: org.apache.kafka.common.serialization.StringSerializer
value.serializer: org.apache.kafka.common.serialization.StringSerializer
# ===================================================================
# Application specific properties
# Add your own application properties here, see the ApplicationProperties class
# to have type-safe configuration, like in the JHipsterProperties above
#
# More documentation is available at:
# https://www.jhipster.tech/common-application-properties/
# ===================================================================
# application:
Kubernetes 配置：
apiVersion: apps/v1
kind: Deployment
metadata:
name: derinconfiguration
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: derinconfiguration
version: 'v1'
template:
metadata:
labels:
app: derinconfiguration
version: 'v1'
spec:
affinity:
podAntiAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- podAffinityTerm:
labelSelector:
matchExpressions:
- key: app
operator: In
values:
- derinconfiguration
topologyKey: kubernetes.io/hostname
weight: 100
initContainers:
- name: init-ds
image: busybox:latest
command:
- '/bin/sh'
- '-c'
- |
while true
do
rt=$(nc -z -w 1 192.168.1.156 5432)
if [ $? -eq 0 ]; then
echo "DB is UP"
break
fi
echo "DB is not yet reachable;sleep for 10s before retry"
sleep 10
done
containers:
- name: derinconfiguration-app
image: 192.168.1.150:5000/derin/derinconfiguration
env:
- name: SPRING_PROFILES_ACTIVE
value: prod
- name: SPRING_CLOUD_CONFIG_URI
value: http://admin:${jhipster.registry.password}@jhipster-registry.default.svc.cluster.local:8761/config
- name: JHIPSTER_REGISTRY_PASSWORD
valueFrom:
secretKeyRef:
name: registry-secret
key: registry-admin-password
- name: EUREKA_CLIENT_SERVICE_URL_DEFAULTZONE
value: http://admin:${jhipster.registry.password}@jhipster-registry.default.svc.cluster.local:8761/eureka/
- name: SPRING_DATASOURCE_URL
value: jdbc:postgresql://192.168.1.156:5432/derinfw
- name: SPRING_DATASOURCE_USERNAME
value: admin
- name: SPRING_DATASOURCE_PASSWORD
valueFrom:
secretKeyRef:
name: postgresql-secret
key: postgresql-admin-password
- name: KAFKA_CONSUMER_KEY_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: KAFKA_CONSUMER_VALUE_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: KAFKA_CONSUMER_BOOTSTRAP_SERVERS
value: 'jhipster-kafka.default.svc.cluster.local:9092'
- name: KAFKA_CONSUMER_GROUP_ID
value: 'derinconfiguration'
- name: KAFKA_CONSUMER_AUTO_OFFSET_RESET
value: 'earliest'
- name: KAFKA_PRODUCER_BOOTSTRAP_SERVERS
value: 'jhipster-kafka.default.svc.cluster.local:9092'
- name: KAFKA_PRODUCER_KEY_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: KAFKA_PRODUCER_VALUE_DESERIALIZER
value: 'org.apache.kafka.common.serialization.StringDeserializer'
- name: JHIPSTER_METRICS_LOGS_ENABLED
value: 'true'
- name: JHIPSTER_LOGGING_LOGSTASH_ENABLED
value: 'true'
- name: JHIPSTER_LOGGING_LOGSTASH_HOST
value: jhipster-logstash
- name: SPRING_ZIPKIN_ENABLED
value: 'true'
- name: SPRING_ZIPKIN_BASE_URL
value: http://jhipster-zipkin
- name: SPRING_SLEUTH_PROPAGATION_KEYS
value: 'x-request-id,x-ot-span-context'
- name: JAVA_OPTS
value: ' -Xmx256m -Xms256m'
resources:
requests:
memory: '512Mi'
cpu: '500m'
limits:
memory: '1Gi'
cpu: '1'
ports:
- name: http
containerPort: 8084
readinessProbe:
httpGet:
path: /management/health
port: http
initialDelaySeconds: 20
periodSeconds: 15
failureThreshold: 6
livenessProbe:
httpGet:
path: /management/health
port: http
initialDelaySeconds: 120
我怀疑你的健康端点 /management/health 无法 return 200 提示 K8s 重新创建 Pod。
have you been trying disabling readiness and liveness probes? – Nick
After I removed readiness and liveness probes, it working now. It seems that needs extra time to run. – mehmet
这是很常见的情况，由于某种原因需要很长时间才能探测到 return 结果。
有时，您必须处理遗留应用程序，这些应用程序在首次初始化时可能需要额外的启动时间。在这种情况下，在不影响对激发此类探测的死锁的快速响应的情况下设置活性探测参数可能会很棘手。
诀窍是使用相同的命令、HTTP 或 TCP 检查设置启动探测，failureThreshold * periodSeconds 足够长以覆盖最坏情况下的启动时间。
livenessProbe:
httpGet:
path: /healthz
port: liveness-port
failureThreshold: 1
periodSeconds: 10
Probes 有许多字段可用于更精确地控制活动和就绪检查的行为：
initialDelaySeconds：容器启动后到启动活动或就绪探测之前的秒数。默认为 0 秒。最小值为 0。
periodSeconds：执行探测的频率（以秒为单位）。默认为 10 秒。最小值为 1。
查看您的 YAML 文件，我会首先对 readiness probe 进行更改
readinessProbe:
httpGet:
path: /management/health
initialDelaySeconds: 20
periodSeconds: 15
failureThreshold: 6
livenessProbe:
httpGet:
path: /management/health
initialDelaySeconds: 120
这意味着在 20+(6*15)=110 秒后，就绪探测将失败。同时，liveness 探测延迟设置为 120 秒。我将 readiness 探测的延迟增加到与 livenes 相同的值，以防止流量发送到未完全启动且 运行 的 Pod 的情况。 =26=]
以下是来自 Kubernetes official documentation 关于探测的一些信息：
活性探测
许多应用程序 运行 很长一段时间最终都会转换为损坏状态，并且只能通过重新启动才能恢复。 Kubernetes 提供了 liveness probes 来检测和补救这种情况。
就绪探测
有时，应用程序暂时无法处理流量。例如，应用程序可能需要在启动时加载大量数据或配置文件，或者在启动后依赖于外部服务。在这种情况下，您不想终止应用程序，但也不想向它发送请求。 Kubernetes 提供就绪探测器来检测和缓解这些情况。报告未就绪的容器的 Pod 不会通过 Kubernetes 服务接收流量。
Note: Readiness probes runs on the container during its whole lifecycle.
就绪探测器的配置类似于活动探测器。唯一的区别是您使用 readinessProbe 字段而不是 livenessProbe 字段。
readinessProbe:
exec:
command:
- cat
- /tmp/healthy
initialDelaySeconds: 5
periodSeconds: 5
希望对您有所帮助。