mosquitto.conf
mosquitto.conf是mosquitto的配置文件，
# Config file for mosquitto# =================================================================
# General configuration
# =================================================================per_listener_settings false
allow_zero_length_clientid false
check_retain_source false
max_inflight_messages 20
max_keepalive 60
persistent_client_expiration 1w
retain_available true
sys_interval 3600
listener 1883 0.0.0.0
# bind_address 127.0.0.1# =================================================================
# Persistence
# =================================================================persistence false# =================================================================
# Security
# =================================================================allow_anonymous false
password_file /etc/mosquitto/pwfile.example
acl_file /etc/mosquitto/aclfile.example# =================================================================
# Debug configuration
# =================================================================# log_dest file /var/log/mosquitto.log
# log_dest none
# log_type error
# log_type warning
# log_type notice
# log_type information
# connection_messages true
# log_timestamp true
# log_timestamp_format %Y-%m-%dT%H:%M:%S
# max_keepalive 5
# sys_interval 10pwfile.example
设置用户名和密码，若客户端登录时，提供的用户名和密码不匹配，将无法连接mosquitto broker。
安装mosquitto时，附带安装了mosquitto_passwd，用户创建用户的可执行文件。
创建两个用户，分别是：admin和mosquitto
创建第一个用户admin：sudo mosquitto_passwd -c /etc/mosquitto/pwfile.example admin
创建第二个用户mosquitto：sudo mosquitto_passwd /etc/mosquitto/pwfile.example mosquitto
(注意：创建第二个用户时，不需要参数-c。若添加了参数-c，那么第一个用户会被第二个用户覆盖)
aclfile.example
可以限制指定用户对主题的发布或订阅权限。
例如：用户admin可以对 device/1001 发布，对 room/# 订阅。用户mosquitto可以对 # 发布和订阅。
user admin
topic write device/1001
topic read room/#
user mosquitto
topic readwrite #
