Configure Milvus on the Fly

Milvus allows you to change some of its configurations on the fly.

Before you start

You need to ensure that：

• You have Birdwatcher installed. For details, refer to Install Birdwatcher,
• You have etcdctl installed. For details, refer to Interacting with etcd, or
• You have other etcd clients, such as the Python client, installed.

Change configurations

On Milvus, proxy.minPasswordLength is set to 6 by default. To change this value, you can do as follows:

$ etcdctl put by-dev/config/proxy/minPasswordLength 8
# or
$ birdwatcher -olc "#connect --etcd 127.0.0.1:2379 --rootPath=by-dev,set config-etcd --key by-dev/config/proxy/minPasswordLength --value 8"

Then you can check the configurations as follows:

$ etcdctl get by-dev/config/proxy/minPasswordLength

Roll back configurations

Milvus also allows you to roll back your configurations in case the changed value no longer applies.

$ etcdctl del by-dev/config/proxy/minPasswordLength 
# or 
$ birdwatcher -olc "#connect --etcd 127.0.0.1:2379 --rootPath=by-dev,remove config-etcd --key by-dev/config/proxy/minPasswordLength"

Then you can check the configurations as follows:

$ etcdctl get by-dev/config/proxy/minPasswordLength

View configurations

Instead of viewing the value of a specific configuration item, you can also list all of them.

$ etcdctl get --prefix by-dev/config
# or
$ birdwatcher -olc "#connect --etcd 127.0.0.1:2379 --rootPath=by-dev,show config-etcd"

To view the configurations of a specific node:

Offline > connect --etcd ip:port 
Milvus(by-dev) > show session          # List all nodes with their server ID
Milvus(by-dev) > visit querycoord 1    # Visit a node by server ID
QueryCoord-1(ip:port) > configuration  # List the configuration of the node

Applicable configuration items

Currently, you can change the following configuration items on the fly.

What’s next

• Learn more about System Configurations.
• Learn how to configure Milvus installed using Milvus Operator, Helm charts, and Docker.