While deploying to kubernetes , redis connection is not able to establish connection because of jedis connection refused error.
"message": "Cannot get Jedis connection; nested exception is
redis.clients.jedis.exceptions.JedisConnectionException:
java.net.ConnectException: Connection refused (Connection refused)",Deployment yaml file:
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: redis-master
spec:
selector:
matchLabels:
app: redis
replicas: 1
template:
metadata:
labels:
app: redis
spec:
containers:
- name: redis-master
image: gcr.io/google_containers/redis:e2e
ports:
- containerPort: 6379
volumeMounts:
- name: redis-storage
mountPath: /data/redis
volumes:
- name: redis-storage
---
apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
spec:
ports:
- port: 6379
selector:
app: redis---Sample Jedis code used in project:
JedisConnectionFactory jedisConnectionFactoryUpdated() {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
redisStandaloneConfiguration.setHostName("redis-master");
redisStandaloneConfiguration.setPort(6379);
JedisClientConfigurationBuilder jedisClientConfiguration = JedisClientConfiguration.builder();
jedisClientConfiguration.connectTimeout(Duration.ofSeconds(60));// 60s connection timeout
JedisConnectionFactory jedisConFactory = new JedisConnectionFactory(redisStandaloneConfiguration,
jedisClientConfiguration.build());
return jedisConFactory;
}
Does anybody overcome this issue? TIA.
You need to first update your service to reflect:
apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
spec:
ports:
- port: 6379
targetPort: 6379
selector:
app: redisOnce you have done so you can check whether or not your redis service is up and responding by using nmap. Here is an example using my nmap image:
kubectl run --image=appsoa/docker-alpine-nmap --rm -i -t nm -- -Pn 6379 redis-masterAlso, make sure that both redis & your spring boot app are deployed to the same namespace. If not, you need to explicity define your hostname using . (i.e.: "redis-master.mynamespace").