docs.emqtt.com
This commit is contained in:
Feng
parent
3866dbaffb
commit
f3607230d4
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@ -0,0 +1,7 @@
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http://docs.emqtt.com/
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or
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http://emqttd-docs.rtfd.org
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@ -9,7 +9,7 @@ User Guide
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Authentication
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Authentication
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--------------
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--------------
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The emqttd broker supports to authenticate MQTT client with ClientID, Username/Password, IpAddress and even HTTP Cookies.
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The emqttd broker supports to authenticate MQTT clients with ClientID, Username/Password, IpAddress and even HTTP Cookies.
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The authentication is provided by a list of extended modules, or MySQL, PostgreSQL and Redis Plugins.
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The authentication is provided by a list of extended modules, or MySQL, PostgreSQL and Redis Plugins.
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@ -41,7 +41,7 @@ Enable an authentication module in etc/emqttd.config::
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{anonymous, []}
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{anonymous, []}
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]},
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]},
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.. NOTE:: "%%" comments the line.
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.. NOTE:: "%" comments the line.
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If we enable several modules in the same time, the authentication process::
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If we enable several modules in the same time, the authentication process::
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@ -119,8 +119,8 @@ Allow any client to connect to the broker::
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{anonymous, []}
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{anonymous, []}
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MySQL Plugin
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MySQL
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------------
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-----
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Authenticate against MySQL database. Support we create a mqtt_user table::
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Authenticate against MySQL database. Support we create a mqtt_user table::
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@ -158,8 +158,8 @@ Load the plugin::
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./bin/emqttd_ctl plugins load emqttd_plugin_mysql
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./bin/emqttd_ctl plugins load emqttd_plugin_mysql
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PostgreSQL Plugin
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PostgreSQL
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-----------------
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----------
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Authenticate against PostgreSQL database. Create a mqtt_user table::
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Authenticate against PostgreSQL database. Create a mqtt_user table::
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@ -196,7 +196,7 @@ Load the plugin::
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Redis
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Redis
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-----
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-----
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Authenticate against Redis. Support we store mqtt user in an redis HASH, the key is "mqtt_user:<Username>".
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Authenticate against Redis. MQTT users could be stored in redis HASH, the key is "mqtt_user:<Username>".
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Configure 'authcmd' and 'password_hash' in emqttd_plugin_redis/etc/plugin.config::
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Configure 'authcmd' and 'password_hash' in emqttd_plugin_redis/etc/plugin.config::
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@ -243,7 +243,7 @@ Access Control Module of emqttd broker will match the rules one by one::
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Internal
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Internal
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--------
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--------
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ACL of emqttd broker is implemented by an 'internal' module by default.
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The default ACL of emqttd broker is implemented by an 'internal' module.
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Enable the 'internal' ACL module in etc/emqttd.config::
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Enable the 'internal' ACL module in etc/emqttd.config::
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@ -355,7 +355,7 @@ Configure 'aclquery' and 'acl_nomatch' in emqttd_plugin_pgsql/etc/plugin.config:
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Redis
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Redis
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-----
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-----
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ACL against Redis. We store ACL rules for each MQTT client in Redis List by defualt. The key is "mqtt_acl:<Username>", the value is a list of "publish <Topic>", "subscribe <Topic>" or "pubsub <Topic>".
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ACL against Redis. We store ACL rules for each MQTT client in a Redis List by defualt. The key is "mqtt_acl:<Username>", the value is a list of "publish <Topic>", "subscribe <Topic>" or "pubsub <Topic>".
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Configure 'aclcmd' and 'acl_nomatch' in emqttd_plugin_redis/etc/plugin.config::
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Configure 'aclcmd' and 'acl_nomatch' in emqttd_plugin_redis/etc/plugin.config::
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@ -474,7 +474,7 @@ Parameters of the HTTP API:
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| message | Payload |
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| message | Payload |
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+---------+----------------+
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+---------+----------------+
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.. NOTE:: The API use HTTP Basic Authentication.
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.. NOTE:: The API uses HTTP Basic Authentication.
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-------------------
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-------------------
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MQTT Over WebSocket
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MQTT Over WebSocket
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@ -509,245 +509,252 @@ Listener of WebSocket and HTTP Publish API is configured in etc/emqttd.config::
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]}
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]}
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]}
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]}
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## Overview
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emqttd could trace packets received/sent from/to specific client, or trace publish/subscribe to specific topic.
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emqttd use lager:trace_file api and write trace log to file.
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## Trace Commands
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### Trace client
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```
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./bin/emqttd_ctl trace client "ClientId" "trace_clientid.log"
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```
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### Trace topic
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```
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./bin/emqttd_ctl trace topic "Topic" "trace_topic.log"
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```
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### Stop Trace
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```
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./bin/emqttd_ctl trace client "ClientId" off
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./bin/emqttd_ctl trace topic "Topic" off
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```
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### Lookup Traces
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```
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./bin/emqttd_ctl trace list
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```
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-----------
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-----------
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$SYS Topics
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$SYS Topics
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-----------
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-----------
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NOTICE: This is the design of 0.9.0 release
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The emqttd broker periodically publishes internal status, MQTT statistics, metrics and client online/offline status to $SYS/# topics.
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## Overview
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For emqttd broker is clustered, the $SYS topic path is started with::
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For emqttd is clustered, $SYS Topics of broker is started with:
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$SYS/brokers/${node}/
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```
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'${node}' is the erlang node name of emqttd broker. For example::
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$SYS/brokers/${node}
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```
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${node} is erlang node of clustered brokers. For example:
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$SYS/brokers/emqttd@127.0.0.1/version
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```
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$SYS/brokers/emqttd@host2/uptime
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$SYS/brokers/emqttd@host1/version
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$SYS/brokers/emqttd@host2/version
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```
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## Broker $SYS Topics
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.. NOTE:: The broker only allows clients from localhost to subscribe $SYS topics by default.
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Topic | Description
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Sys Interval of publishing broker $SYS messages, could be configured in etc/emqttd.config::
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-------------------------------|------------
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$SYS/brokers | Broker nodes
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$SYS/brokers/${node}/version | Broker Version
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$SYS/brokers/${node}/uptime | Broker Uptime
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$SYS/brokers/${node}/datetime | Broker DateTime
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$SYS/brokers/${node}/sysdescr | Broker Description
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## Client $SYS Topics
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Start with: $SYS/brokers/${node}/clients/
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{broker, [
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%% System interval of
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Topic | Payload(json) | Description
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{sys_interval, 60},
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----------------------|---------------------|---------------
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${clientid}/connected | {ipaddress: "127.0.0.1", username: "test", session: false, version: 3, connack: 0, ts: 1432648482} | Publish when client connected
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${clientid}/disconnected | {reason: "normal" | "keepalive_timeout" | "conn_closed"}
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Parameters of 'connected' Payload:
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```
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ipaddress: "127.0.0.1",
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username: "test",
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session: false,
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protocol: 3,
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connack: 0,
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ts: 1432648482
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```
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Parameters of 'disconnected' Payload:
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```
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reason: normal,
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ts: 1432648486
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```
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## Statistics $SYS Topics
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Start with '$SYS/brokers/${node}/stats/'
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### Client Stats
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Topic | Description
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-------------------------------------|------------
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clients/count | count of current connected clients
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clients/max | max connected clients in the same time
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### Session Stats
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Topic | Description
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-----------------|------------
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sessions/count | count of current sessions
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sessions/max | max number of sessions
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### Subscriber Stats
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Topic | Description
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------------------|------------
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subscriptions/count | count of current subscriptions
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subscriptions/max | max number of subscriptions
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### Topic Stats
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Topic | Description
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------------------|------------
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topics/count | count of current topics
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topics/max | max number of topics
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### Queue Stats
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Topic | Description
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------------------|------------
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queues/count | count of current queues
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queues/max | max number of queues
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## Metrics $SYS Topics
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Broker Version, Uptime and Description
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---------------------------------------
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Start with '$SYS/brokers/${node}/metrics/'
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+--------------------------------+-----------------------+
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| Topic | Description |
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+================================+=======================+
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| $SYS/brokers | Broker nodes |
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+--------------------------------+-----------------------+
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| $SYS/brokers/${node}/version | Broker Version |
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+--------------------------------+-----------------------+
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| $SYS/brokers/${node}/uptime | Broker Uptime |
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+--------------------------------+-----------------------+
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| $SYS/brokers/${node}/datetime | Broker DateTime |
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+--------------------------------+-----------------------+
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| $SYS/brokers/${node}/sysdescr | Broker Description |
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+--------------------------------+-----------------------+
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### Bytes sent and received
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Online/Offline Status of MQTT Client
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------------------------------------
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Topic | Description
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The topic path is started with: $SYS/brokers/${node}/clients/
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------------------------------------|------------
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bytes/received | MQTT Bytes Received since broker started
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bytes/sent | MQTT Bytes Sent since the broker started
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### Packets sent and received
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+-------------------------+-------------------------------------------+------------------------------------+
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| Topic | Payload(JSON) | Description |
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+=========================+===========================================+====================================+
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| ${clientid}/connected | {ipaddress: "127.0.0.1", username: "test",| Publish when a client connected |
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| | session: false, version: 3, connack: 0, | |
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| | ts: 1432648482} | |
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+-------------------------+-------------------------------------------+------------------------------------+
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| ${clientid}/disconnected| {reason: "keepalive_timeout", | Publish when a client disconnected |
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| | ts: 1432749431} | |
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+-------------------------+-------------------------------------------+------------------------------------+
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Topic | Description
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Parameters of 'connected' Payload::
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-------------------------|------------
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packets/received | MQTT Packets received
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packets/sent | MQTT Packets sent
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packets/connect | MQTT CONNECT Packet received
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packets/connack | MQTT CONNACK Packet sent
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packets/publish/received | MQTT PUBLISH packets received
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packets/publish/sent | MQTT PUBLISH packets sent
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packets/subscribe | MQTT SUBSCRIBE Packets received
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packets/suback | MQTT SUBACK packets sent
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packets/unsubscribe | MQTT UNSUBSCRIBE Packets received
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packets/unsuback | MQTT UNSUBACK Packets sent
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packets/pingreq | MQTT PINGREQ packets received
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packets/pingresp | MQTT PINGRESP Packets sent
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packets/disconnect | MQTT DISCONNECT Packets received
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### Messages sent and received
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ipaddress: "127.0.0.1",
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username: "test",
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session: false,
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protocol: 3,
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connack: 0,
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ts: 1432648482
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Topic | Description
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Parameters of 'disconnected' Payload::
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---------------------------------------|-------------------
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messages/received | Messages Received
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messages/sent | Messages Sent
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messages/retained | Messages Retained
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messages/stored | TODO: Messages Stored
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messages/dropped | Messages Dropped
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## Alarm Topics
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reason: normal,
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|
ts: 1432648486
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Start with '$SYS/brokers/${node}/alarms/'
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Broker Statistics
|
||||||
|
-----------------
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|
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Topic | Description
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Topic path started with: $SYS/brokers/${node}/stats/
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-----------------|-------------------
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${alarmId}/alert | New Alarm
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${alarmId}/clear | Clear Alarm
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## Log
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Clients
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|
.......
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|
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'$SYS/brokers/${node}/logs/${severity}'
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+---------------------+---------------------------------------------+
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| Topic | Description |
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+---------------------+---------------------------------------------+
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| clients/count | Count of current connected clients |
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+---------------------+---------------------------------------------+
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| clients/max | Max number of cocurrent connected clients |
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|
+---------------------+---------------------------------------------+
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||||||
|
|
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Severity | Description
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Sessions
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-----------|-------------------
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........
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debug | Debug Log
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info | Info Log
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|
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notice | Notice Log
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|
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warning | Warning Log
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|
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error | Error Log
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|
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critical | Critical Log
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|
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|
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## Sysmon
|
+---------------------+---------------------------------------------+
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| Topic | Description |
|
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|
+---------------------+---------------------------------------------+
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| sessions/count | Count of current sessions |
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|
+---------------------+---------------------------------------------+
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| sessions/max | Max number of sessions |
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+---------------------+---------------------------------------------+
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|
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Start with '$SYS/brokers/${node}/sysmon/'
|
Subscriptions
|
||||||
|
.............
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|
|
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Topic | Description
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+---------------------+---------------------------------------------+
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||||||
-----------------|-------------------
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| Topic | Description |
|
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long_gc | Long GC Warning
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+---------------------+---------------------------------------------+
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long_schedule | Long Schedule
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| subscriptions/count | Count of current subscriptions |
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large_heap | Large Heap Warning
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+---------------------+---------------------------------------------+
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busy_port | Busy Port Warning
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| subscriptions/max | Max number of subscriptions |
|
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busy_dist_port | Busy Dist Port
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+---------------------+---------------------------------------------+
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|
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## Log
|
Topics
|
||||||
|
......
|
||||||
|
|
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'$SYS/brokers/${node}/log/${severity}'
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+---------------------+---------------------------------------------+
|
||||||
|
| Topic | Description |
|
||||||
|
+---------------------+---------------------------------------------+
|
||||||
|
| topics/count | Count of current topics |
|
||||||
|
+---------------------+---------------------------------------------+
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||||||
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| topics/max | Max number of topics |
|
||||||
|
+---------------------+---------------------------------------------+
|
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|
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Severity | Description
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Broker Metrics
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------------|-------------------
|
--------------
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debug | Debug
|
|
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info | Info Log
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|
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notice | Notice Log
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warning | Warning Log
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|
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error | Error Log
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|
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critical | Critical Log
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|
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alert | Alert Log
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## VM Load Topics
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Topic path started with: $SYS/brokers/${node}/metrics/
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|
|
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Start with '$SYS/brokers/${node}/vm/'
|
Bytes Sent/Received
|
||||||
|
...................
|
||||||
|
|
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Topic | Description
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+---------------------+---------------------------------------------+
|
||||||
-----------------|-------------------
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| Topic | Description |
|
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memory/* | TODO
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+---------------------+---------------------------------------------+
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||||||
cpu/* | TODO
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| bytes/received | MQTT Bytes Received since broker started |
|
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processes/* | TODO
|
+---------------------+---------------------------------------------+
|
||||||
|
| bytes/sent | MQTT Bytes Sent since the broker started |
|
||||||
|
+---------------------+---------------------------------------------+
|
||||||
|
|
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## Sys Interval
|
Packets Sent/Received
|
||||||
|
.....................
|
||||||
|
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| Topic | Description |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
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| packets/received | MQTT Packets received |
|
||||||
|
+--------------------------+---------------------------------------------+
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||||||
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| packets/sent | MQTT Packets sent |
|
||||||
|
+--------------------------+---------------------------------------------+
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||||||
|
| packets/connect | MQTT CONNECT Packet received |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
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| packets/connack | MQTT CONNACK Packet sent |
|
||||||
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+--------------------------+---------------------------------------------+
|
||||||
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| packets/publish/received | MQTT PUBLISH packets received |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/publish/sent | MQTT PUBLISH packets sent |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/subscribe | MQTT SUBSCRIBE Packets received |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/suback | MQTT SUBACK packets sent |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/unsubscribe | MQTT UNSUBSCRIBE Packets received |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/unsuback | MQTT UNSUBACK Packets sent |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/pingreq | MQTT PINGREQ packets received |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/pingresp | MQTT PINGRESP Packets sent |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| packets/disconnect | MQTT DISCONNECT Packets received |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
|
||||||
|
Messages Sent/Received
|
||||||
|
......................
|
||||||
|
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| Topic | Description |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| messages/received | Messages Received |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| messages/sent | Messages Sent |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| messages/retained | Messages Retained |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| messages/stored | TODO: Messages Stored |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
| messages/dropped | Messages Dropped |
|
||||||
|
+--------------------------+---------------------------------------------+
|
||||||
|
|
||||||
|
Broker Alarms
|
||||||
|
-------------
|
||||||
|
|
||||||
|
The topic path started with: $SYS/brokers/${node}/alarms/
|
||||||
|
|
||||||
|
+------------------+------------------+
|
||||||
|
| Topic | Description |
|
||||||
|
+------------------+------------------+
|
||||||
|
| ${alarmId}/alert | New Alarm |
|
||||||
|
+------------------+------------------+
|
||||||
|
| ${alarmId}/clear | Clear Alarm |
|
||||||
|
+------------------+------------------+
|
||||||
|
|
||||||
|
Broker Sysmon
|
||||||
|
-------------
|
||||||
|
|
||||||
|
Topic path: '$SYS/brokers/${node}/sysmon/'
|
||||||
|
|
||||||
|
+------------------+--------------------+
|
||||||
|
| Topic | Description |
|
||||||
|
+------------------+--------------------+
|
||||||
|
| long_gc | Long GC Warning |
|
||||||
|
+------------------+--------------------+
|
||||||
|
| long_schedule | Long Schedule |
|
||||||
|
+------------------+--------------------+
|
||||||
|
| large_heap | Large Heap Warning |
|
||||||
|
+------------------+--------------------+
|
||||||
|
| busy_port | Busy Port Warning |
|
||||||
|
+------------------+--------------------+
|
||||||
|
| busy_dist_port | Busy Dist Port |
|
||||||
|
+------------------+--------------------+
|
||||||
|
|
||||||
sys_interval: 1 minute default
|
|
||||||
|
|
||||||
---------------------
|
---------------------
|
||||||
Trace Topic or Client
|
Trace Topic or Client
|
||||||
---------------------
|
---------------------
|
||||||
|
|
||||||
|
The emqttd broker supports to trace MQTT packets received/sent from/to a client, or trace MQTT messages published to a topic.
|
||||||
|
|
||||||
|
Trace a client::
|
||||||
|
|
||||||
|
./bin/emqttd_ctl trace client "clientid" "trace_clientid.log"
|
||||||
|
|
||||||
|
Trace a topic::
|
||||||
|
|
||||||
|
./bin/emqttd_ctl trace topic "topic" "trace_topic.log"
|
||||||
|
|
||||||
|
Lookup Traces::
|
||||||
|
|
||||||
|
./bin/emqttd_ctl trace list
|
||||||
|
|
||||||
|
Stop a Trace::
|
||||||
|
|
||||||
|
./bin/emqttd_ctl trace client "clientid" off
|
||||||
|
|
||||||
|
./bin/emqttd_ctl trace topic "topic" off
|
||||||
|
|
||||||
|
|
||||||
.. _emqttd_plugin_mysql: https://github.com/emqtt/emqttd_plugin_mysql
|
.. _emqttd_plugin_mysql: https://github.com/emqtt/emqttd_plugin_mysql
|
||||||
.. _emqttd_plugin_pgsql: https://github.com/emqtt/emqttd_plugin_pgsql
|
.. _emqttd_plugin_pgsql: https://github.com/emqtt/emqttd_plugin_pgsql
|
||||||
.. _emqttd_plugin_redis: https://github.com/emqtt/emqttd_plugin_redis
|
.. _emqttd_plugin_redis: https://github.com/emqtt/emqttd_plugin_redis
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue