Scenario:
You are using a Linux VM and you want to connect to Azure Cache for Redis using SSL Port 6380.
Action:
You can connect to Azure Cache for Redis using SSL Port with the help of Stunnel and Redis-cli.
The steps are as follows:
Step 1:
Install the Redis-cli tool in your Linux machine. The command is as below:
sudo apt-get update
sudo apt-get install redis-tools
Note: redis-tools package has redis-cli tool as well among other tools.
Step 2:
Since the redis-cli doesn’t support SSL port (6380), we can make use of stunnel to connect to Azure Cache for Redis using SSL port. We have version 4 of the utility, called stunnel4 which can be installed using the below command:
sudo apt-get install stunnel4
Note:
If you want to run the Redis using non SSL port 6379, in that case you do not need stunnel and you can directly access using the below command provided non-ssl port is open in Azure Cache for Redis:
redis-cli -p 6379 -a <Your Access Key for Azure Cache for Redis> -h < yourcachename.redis.cache.windows.net>
Step 3:
To configure the service to start at booting, you must modify the /etc/default/stunnel4 file using the below command:
sudo nano /etc/default/stunnel4
This opens a file where you have a variable ‘ENABLED’ which must be set to 1 to enable the service to start as shown below:
You can save the changes with CTL+X and then pressing ENTER.
Step 4:
We need to configure the Azure Cache for Redis for redis-cli which must be mentioned in Redis configuration file of stunnel.
Execute the below command:
sudo nano /etc/stunnel/redis.conf
This creates a new file where add the following entry and insert the actual name of your Azure Cache for Redis in place of yourcachename.
[redis-cli]
client = yes
accept = 127.0.0.1:6380
connect = yourcachename.redis.cache.windows.net:6380
Save the file.
Step 5:
Now, we have configured the stunnel and hence need to restart the service which can be done with the help of below command:
sudo systemctl restart stunnel4.service
Step 6:
If you check the services listening for connections on your Redis, you should see stunnel listening on port 6380 as below:
sudo netstat -plunt
Step 7:
Now you can connect to Azure Cache for Redis using SSL port with the help of Redis-cli. Below is the command:
redis-cli -p 6380 -a <Your Access Key for Azure Cache for Redis>
You can see that Redis gets connected successfully and you will be able to perform operations on Azure Cache for Redis:
Hope this helps!
Microsoft
