Cannot connect to redis using jedis

Question

Redis version: 3.2.0 Jedis version: 2.8.1

Below is my java code for connecting to redis:

public class TestRedis { public static void main(String[] args) { String host = args[0]; int port = Integer.parseInt(args[1]); try (Jedis jedis = new Jedis(host, port)) { System.out.println("Connected to jedis " + jedis.ping()); } catch(Exception e){ e.printStackTrace(); } } }

I am running this program on the machine where redis is installed. The public IP address is 192.168.1.57

If I provide host="localhost" and port = "6379" as arguments, then I can successfully connect with redis.

However, If I give host="192.168.1.57" and port = "6379" in arguments, I end up with the following exception:

redis.clients.jedis.exceptions.JedisConnectionException: java.net.ConnectException: Connection refused at redis.clients.jedis.Connection.connect(Connection.java:164) at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:80) at redis.clients.jedis.Connection.sendCommand(Connection.java:100) at redis.clients.jedis.Connection.sendCommand(Connection.java:95) at redis.clients.jedis.BinaryClient.ping(BinaryClient.java:93) at redis.clients.jedis.BinaryJedis.ping(BinaryJedis.java:105) at TestRedis.main(TestRedis.java:14) Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:579) at redis.clients.jedis.Connection.connect(Connection.java:158) ... 6 more

Please help...

In my case, I had to open an SSH tunnel into the remote host to resolve the issue — 3pitt
– 3pitt, Commented May 10, 2023 at 22:49

score 8 · Accepted Answer · 2019-06-12 13:04:44Z

There are a few settings that would affect this: bind and protected-mode. They work together to provide a baseline of security with new installs.

Find the following in your redis.conf file and comment it out:

bind 127.0.0.1

By adding a # in front of it:

# bind 127.0.0.1

Or, if you would rather not comment it out, you can also add the IP of your eth0/em1 interface to it, like this:

bind 127.0.0.1 192.168.1.57

Also, unless you're using password security, you'll also have to turn off protected mode by changing:

protected-mode yes

To:

protected-mode no

Make sure that you read the relevant documentation and understand the security implications of both of these changes.

After making these changes, restart redis.

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