admin.json

This is required.
User passwords can be set by adding a "password" attribute (which takes a plain password) or by adding a "hashedPassword" attribute (which takes a hashed password). If needed, user passwords can be hashed manually by running java -jar glowroot-central.jar hash-password <plain password>.
SMTP, HTTP Proxy and LDAP passwords can be set by adding a "password" attribute (which takes a plain password) or by adding an "encryptedPassword" attribute (which takes an encrypted password). If needed, SMTP, HTTP Proxy and LDAP passwords can be encrypted manually by running java -jar glowroot-central.jar encrypt-password <plain password>.