Getting and setting Valkey configuration using valkey-cli

[chriscroome]

I'm loking at how best to configure multiple Valkey instances on Debian, following the Debian instructions, I was considering using valkey-cli to get and set configuration variables however I'm not sure if this is possible for variables that have multiple values, for example, client-output-buffer-limit:

grep client-output-buffer-limit /etc/valkey/valkey.conf 
# The syntax of every client-output-buffer-limit directive is the following:
# client-output-buffer-limit <class> <hard limit> <soft limit> <soft seconds>
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60

Getting the value of client-output-buffer-limit as JSON:

valkey-cli -s /run/valkey/valkey-server.sock --json CONFIG GET client-output-buffer-limit | jq
{
  "client-output-buffer-limit": "normal 0 0 0 slave 268435456 67108864 60 pubsub 33554432 8388608 60"
}

If this is written back to /etc/valkey/valkey.conf as:

client-output-buffer-limit normal 0 0 0 slave 268435456 67108864 60 pubsub 33554432 8388608 60

Does that have the same effect as what is currently in /etc/valkey/valkey.conf?

If not is there a way to get JSON in a format like this for multiple entries?

{
  "client-output-buffer-limit": [
    "normal 0 0 0",
    "replica 256mb 64mb 60",
    "pubsub 32mb 8mb 60"
  ]
}