Set up per-role, per-topic ACLs on Eclipse Mosquitto using the dynamic security plugin instead of static acl_file entries
domain: mosquitto.org · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Load the plugin in mosquitto.conf with plugin path/to/mosquitto_dynamic_security.so and plugin_opt_config_file path/to/dynamic-security.json
Bootstrap the initial admin account with mosquitto_ctrl dynsec init <config-file> <admin-username>
Create roles with mosquitto_ctrl dynsec createRole and attach topic ACLs to each role with addRoleACL
Create client accounts with createClient, then attach roles to clients with addClientRole <username> <rolename> <priority>
Optionally create groups with createGroup and attach clients to groups with addGroupClient <groupname> <username> <priority>
Known gotchas
all administration after the initial bootstrap happens over MQTT control messages published to $CONTROL/dynamic-security/v1, not by hand-editing the JSON file while the broker is running
the command names are addClientRole and addGroupClient, not addRoleToClient/addClientToGroup -- using the wrong command name is a common scripting error
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