[英]Redis deployed in AWS - Connection time out from localhost SpringBoot app
关于部署在 AWS(不是 AWS Elastic Cache)中的 Redis 的小问题以及连接到它的问题。
这是部署在 AWS 中的 Redis 的设置:(仅粘贴 Kube.netes StatefulSet 和服务)
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: redis
spec:
serviceName: redis
replicas: 3
selector:
matchLabels:
app: redis
template:
metadata:
labels:
app: redis
spec:
initContainers:
- name: config
image: redis:7.0.5-alpine
command: [ "sh", "-c" ]
args:
- |
cp /tmp/redis/redis.conf /etc/redis/redis.conf
echo "finding master..."
MASTER_FDQN=`hostname -f | sed -e 's/redis-[0-9]\./redis-0./'`
if [ "$(redis-cli -h sentinel -p 5000 ping)" != "PONG" ]; then
echo "master not found, defaulting to redis-0"
if [ "$(hostname)" = "redis-0" ]; then
echo "this is redis-0, not updating config..."
else
echo "updating redis.conf..."
echo "slaveof $MASTER_FDQN 6379" >> /etc/redis/redis.conf
fi
else
echo "sentinel found, finding master"
MASTER="$(redis-cli -h sentinel -p 5000 sentinel get-master-addr-by-name mymaster | grep -E '(^redis-\d{1,})|([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})')"
echo "master found : $MASTER, updating redis.conf"
echo "slaveof $MASTER 6379" >> /etc/redis/redis.conf
fi
volumeMounts:
- name: redis-config
mountPath: /etc/redis/
- name: config
mountPath: /tmp/redis/
containers:
- name: redis
image: redis:7.0.5-alpine
command: ["redis-server"]
args: ["/etc/redis/redis.conf"]
ports:
- containerPort: 6379
name: redis
volumeMounts:
- name: data
mountPath: /data
- name: redis-config
mountPath: /etc/redis/
volumes:
- name: redis-config
emptyDir: {}
- name: config
configMap:
name: redis-config
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: nfs-1
resources:
requests:
storage: 50Mi
---
apiVersion: v1
kind: Service
metadata:
name: redis
spec:
ports:
- port: 6379
targetPort: 6379
name: redis
selector:
app: redis
type: LoadBalancer
Pod 很健康,我可以执行它并正常执行操作。 这是全部:
NAME READY STATUS RESTARTS AGE
pod/redis-0 1/1 Running 0 22h
pod/redis-1 1/1 Running 0 22h
pod/redis-2 1/1 Running 0 22h
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/redis LoadBalancer 192.168.45.55 10.51.5.2 6379:30315/TCP 26h
NAME READY AGE
statefulset.apps/redis 3/3 22h
这是服务的描述:
Name: redis
Namespace: Namespace
Labels: <none>
Annotations: <none>
Selector: app=redis
Type: LoadBalancer
IP Family Policy: SingleStack
IP Families: IPv4
IP: 192.168.22.33
IPs: 192.168.22.33
LoadBalancer Ingress: 10.51.5.2
Port: redis 6379/TCP
TargetPort: 6379/TCP
NodePort: redis 30315/TCP
Endpoints: 192.xxx:6379,192.xxx:6379,192.xxx:6379
Session Affinity: None
External Traffic Policy: Cluster
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Normal IPAllocated 68s metallb-controller Assigned IP ["10.51.5.2"]
Normal nodeAssigned 58s (x5 over 66s) metallb-speaker announcing from node "someaddress.com" with protocol "bgp"
Normal nodeAssigned 58s (x5 over 66s) metallb-speaker announcing from node "someaddress.com" with protocol "bgp"
然后我尝试连接到它,即使用非常简单的 Spring Boot 应用程序插入一些数据。 该应用程序没有业务逻辑,只是试图插入数据。 以下是相关部分:
@Configuration
public class RedisConfiguration {
@Bean
public ReactiveRedisConnectionFactory reactiveRedisConnectionFactory() {
return new LettuceConnectionFactory("10.51.5.2", 30315);
}
@Repository
public class RedisRepository {
private final ReactiveRedisOperations<String, String> reactiveRedisOperations;
public RedisRepository(ReactiveRedisOperations<String, String> reactiveRedisOperations) {
this.reactiveRedisOperations = reactiveRedisOperations;
}
public Mono<RedisPojo> save(RedisPojo redisPojo) {
return reactiveRedisOperations.opsForValue().set(redisPojo.getInput(), redisPojo.getOutput()).map(__ -> redisPojo);
}
每次我尝试写入数据时,都会收到此异常:
2022-12-02T20:20:08.015+08:00 ERROR 1184 --- [ctor-http-nio-3] a.w.r.e.AbstractErrorWebExceptionHandler : [8f16a752-1] 500 Server Error for HTTP POST "/save"
org.springframework.data.redis.RedisConnectionFailureException: Unable to connect to Redis
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.translateException(LettuceConnectionFactory.java:1602) ~[spring-data-redis-3.0.0.jar:3.0.0]
Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
Error has been observed at the following site(s):
*__checkpoint ⇢ Handler com.redis.controller.RedisController#test(RedisRequest) [DispatcherHandler]
*__checkpoint ⇢ HTTP POST "/save" [ExceptionHandlingWebHandler]
Original Stack Trace:
at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$ExceptionTranslatingConnectionProvider.translateException(LettuceConnectionFactory.java:1602) ~[spring-data-redis-3.0.0.jar:3.0.0]
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to 10.51.5.2/<unresolved>:30315
at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78) ~[lettuce-core-6.2.1.RELEASE.jar:6.2.1.RELEASE]
at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56) ~[lettuce-core-6.2.1.RELEASE.jar:6.2.1.RELEASE]
at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:350) ~[lettuce-core-6.2.1.RELEASE.jar:6.2.1.RELEASE]
at io.lettuce.core.RedisClient.connect(RedisClient.java:216) ~[lettuce-core-6.2.1.RELEASE.jar:6.2.1.RELEASE]
Caused by: io.netty.channel.ConnectTimeoutException: connection timed out: /10.51.5.2:30315
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1.run(AbstractNioChannel.java:261) ~[netty-transport-4.1.85.Final.jar:4.1.85.Final]
at io.netty.util.concurrent.PromiseTask.runTask(PromiseTask.java:98) ~[netty-common-4.1.85.Final.jar:4.1.85.Final]
这特别令人费解,因为我非常确定 Spring Boot 应用程序的代码正在运行。 当我更改return new LettuceConnectionFactory("10.51.5.2", 30315);
: 到
因此,我很困惑我在AWS中设置这个Redis做错了什么。 我应该怎么做才能正确连接到它。 我可以得到一些帮助吗?
谢谢
你正在混合两件事。 要为不同命名空间中的 pod 启用此服务,您不需要外部负载均衡器,您可以尝试使用 redis.namespace-name:6379 dns 名称,它就会正常工作。 这样的 dns 对于你创建的每个服务都有(但只在 kube.netes 内部工作)Kube.netes 将确保你的流量将被路由到正确的 pod(假设有多个)。
如果你想从 kube.netes 外部公开 redis 那么你需要确保有来自外部的连接然后你需要.network 负载均衡器将流量转发到你的 kube.netes 服务(在你的情况下节点端口,所以您需要以 eks 工作节点:30315 作为目标的 NLB)
如果您的工作节点有公共 IP 并且它们的 SecurityGroups 允许直接连接到它们,您可以尝试直接连接到工作节点的 IP 只是为了测试(没有 LB)。
不管你的设置如何,你总是可以通过 kubectl 创建代理
kubectl port-forward -n redisNS svc/redis 6379:6379
并从 spring 启动应用程序连接到本地主机:6379
在最终设置中,您希望如何从应用程序连接到 redis?
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