DM-master Configuration File

This document introduces the configuration of DM-master, including a configuration file template and a description of each configuration parameter in this file.

Configuration file template

The following is a configuration file template of DM-master.

name = "dm-master"

# log configuration
log-level = "info"
log-file = "dm-master.log"

# DM-master listening address
master-addr = ":8261"
advertise-addr = "127.0.0.1:8261"

# URLs for peer traffic
peer-urls = "http://127.0.0.1:8291"
advertise-peer-urls = "http://127.0.0.1:8291"

# cluster configuration
initial-cluster = "master1=http://127.0.0.1:8291,master2=http://127.0.0.1:8292,master3=http://127.0.0.1:8293"
join = ""

ssl-ca = "/path/to/ca.pem"
ssl-cert = "/path/to/cert.pem"
ssl-key = "/path/to/key.pem"
cert-allowed-cn = ["dm"]

secret-key-path = "/path/to/secret/key"

Configuration parameters

This section introduces the configuration parameters of DM-master.

Global configuration

name

• The name of the DM-master.

log-level

• Specifies a log level.
• Default value: info
• Value options: debug, info, warn, error, fatal

log-file

• Specifies the log file directory. If the parameter is not specified, the logs are printed onto the standard output.

master-addr

• Specifies the address of DM-master which provides services. You can omit the IP address and specify the port number only, such as ":8261".

advertise-addr

• Specifies the address that DM-master advertises to the outside world.

peer-urls

• Specifies the peer URL of the DM-master node.

advertise-peer-urls

• Specifies the peer URL that DM-master advertises to the outside world. The value of advertise-peer-urls is by default the same as that of peer-urls.

initial-cluster

• The value of initial-cluster is the combination of the advertise-peer-urls value of all DM-master nodes in the initial cluster.

join

• The value of join is the combination of the advertise-peer-urls value of the existing DM-master nodes in the cluster. If the DM-master node is newly added, replace initial-cluster with join.

ssl-ca

• The path of the file that contains list of trusted SSL CAs for DM-master to connect with other components.

ssl-cert

• The path of the file that contains X509 certificate in PEM format for DM-master to connect with other components.

ssl-key

• The path of the file that contains X509 key in PEM format for DM-master to connect with other components.

cert-allowed-cn

• Common Name list.

secret-key-path

• The file path of the secret key, which is used to encrypt and decrypt upstream and downstream passwords. The file must contain a 64-character hexadecimal AES-256 secret key. One way to generate this key is by calculating SHA256 checksum of random data, such as head -n 256 /dev/urandom | sha256sum. For more information, see Customize a secret key for DM encryption and decryption.