JedisConnectionException: java.net.SocketTimeoutException: connection timeout

Question

I use jedis for a simple data store with a key ... My code is as follows

private static final String HOST = "50.30.35.9"; private static final int PORT = 2863; Jedis jedis = new Jedis(HOST, PORT); try { jedis.set("foo", "bar"); jedis.get("foo"); } catch (Exception e) { System.err.println("Unable to connect to Redis"); e.printStackTrace(); } 

When I test the redis server with the jedis client, I got the following exception.

  redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed out at redis.clients.jedis.Connection.connect(Connection.java:124) at redis.clients.jedis.BinaryClient.connect(BinaryClient.java: 54) at redis.clients.jedis.Connection.sendCommand(Connection.java: 77) at redis.clients.jedis.BinaryClient.set(BinaryClient.java:71) at redis.clients.jedis.Client.set(Client.java:21) at redis.clients.jedis.Jedis.set(Jedis.java:48) 

Can anybody help?

Answer 1

Question:

• Why are you getting a SocketTimeoutException

Answer:

Since you cannot connect to the host and port that you have in your code, since you cannot telnet 50.30.35.9 2863 to it.

Next question:

• I cannot get to the Redis instance hosted by Redis4you, even via telnet, although the Redis4you portal claims to be running. How to debug the root cause of this problem?

Answer:

Contact Redis4You and find out. On the Redis4You contact page:

=> You can contact us with questions or support issues at the following email address: redis (@) e-nick . org redis (@) e-nick . org In case of problems with server status, please follow our Twitter accounts: redis4you . You can also leave comments and questions there, but email will be easier and faster.

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Also looking at their Twitter feed on October 17, they “upgraded the system to the recently released Redis 2.4.0. You need to stop and then start your instance for the update to happen for you.”

Answer 2

if ubuntu: sudo ufw allows 2863 / tcp or close the firewall