Client discovery through Sentinel in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the master address from Sentinel.

Redis

redis-cli -p 26379 sentinel get-master-addr-by-name [1]

Drag options to blanks, or click blank then click option'

Aprimary

Bmaster1

Credis-master

Dmymaster

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong master name that Sentinel does not recognize.

Forgetting to specify the master name argument.

The default master name in Sentinel configuration is mymaster. This command asks Sentinel for the current master address.

2fill in blank

medium

Complete the command to check the number of Sentinel monitors.

Redis

redis-cli -p 26379 sentinel [1]

Drag options to blanks, or click blank then click option'

Asentinels

Bslaves

Cmasters

Dget-master-addr-by-name

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'slaves' instead of 'masters' to list masters.

Using 'sentinels' which lists Sentinel instances, not masters.

The masters command lists all masters monitored by Sentinel, which helps check how many masters are monitored.

3fill in blank

hard

Fix the error in the command to list slaves of a master.

Redis

redis-cli -p 26379 sentinel [1] mymaster

Drag options to blanks, or click blank then click option'

Aget-slaves

Bslaves

Cslave

Dlist-slaves

Attempts:

3 left

💡 Hint

Common Mistakes

Using singular form 'slave' which is not a valid command.

Using made-up commands like 'get-slaves' or 'list-slaves'.

The correct Sentinel command to list slaves of a master is slaves. Other options are invalid commands.

4fill in blank

hard

Fill both blanks to create a command that lists all Sentinel instances monitoring the master.

Redis

redis-cli -p 26379 sentinel [1] [2]

Drag options to blanks, or click blank then click option'

Asentinels

Bmymaster

Cmaster1

Dmasters

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'masters' instead of 'sentinels' for the first blank.

Using a wrong master name in the second blank.

The command sentinels mymaster lists all Sentinel instances monitoring the master named 'mymaster'.

5fill in blank

hard

Fill all three blanks to create a command that gets the master address by name on a custom Sentinel port.

Redis

redis-cli -p [1] sentinel [2] [3]

Drag options to blanks, or click blank then click option'

A26379

Bget-master-addr-by-name

Cmymaster

Dmasters

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong port number.

Using 'masters' instead of 'get-master-addr-by-name' command.

Using an incorrect master name.

This command connects to Sentinel on port 26379 and asks for the master address of mymaster using the get-master-addr-by-name command.