mosquitto auth 插件数据库问题

Question

我正在使用 mosquitto auth plugin 这是我的 mosquitto.config 文件

listener 1883

#listener 9001 127.0.0.1
#protocol websockets

auth_opt_backends postgres
auth_plugin /etc/mosquitto/auth-plug.so
auth_opt_dbname mqtt
auth_opt_host localhost
auth_opt_port 5432
auth_opt_user postgres
auth_opt_pass postgres
auth_opt_userquery SELECT password FROM account WHERE username =  limit 1
auth_opt_superquery SELECT COALESCE(COUNT(*),0) FROM account WHERE username =  AND super = 1
auth_opt_aclquery SELECT topic FROM acls WHERE (username = ) AND (rw >= )

所有 postgres 设置都是默认 postgres 设置。当我运行

sudo /usr/local/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf

命令。我收到此错误：

1456228482: mosquitto version 1.4.8 (build date 2016-02-22 18:23:09+0530) starting
1456228482: Config loaded from /etc/mosquitto/mosquitto.conf.
1456228482: |-- *** auth-plug: startup
1456228482: |-- ** Configured order: postgres

1456228482: |-- }}}} POSTGRES
1456228482: |-- HERE: SELECT COALESCE(COUNT(*),0) FROM account WHERE username =  AND super = 1
1456228482: |-- HERE: SELECT topic FROM acls WHERE (username = ) AND (rw >= )
|-- We were unable to connect to the database
|-- *** ABORT.

如果我取消注释这两行

#listener 9001 127.0.0.1
#protocol websockets

我收到这个错误：

Error: Websockets support not available.
Error found at /etc/mosquitto/mosquitto.conf:4.
Error: Unable to open configuration file.

我正在学习这些教程

Tutorial1 Tutorial2

更改 postgres 密码并更改默认端口 1883 后

1456232627: mosquitto version 1.4.8 (build date 2016-02-22 18:23:09+0530) starting
1456232627: Config loaded from /etc/mosquitto/mosquitto.conf.
1456232627: |-- *** auth-plug: startup
1456232627: |-- ** Configured order: postgres

1456232627: |-- }}}} POSTGRES
1456232627: |-- HERE: SELECT COALESCE(COUNT(*),0) FROM account WHERE username =  AND super = 1
1456232627: |-- HERE: SELECT topic FROM acls WHERE (username = ) AND (rw >= )
1456232627: Opening ipv4 listen socket on port 1884.
1456232627: Opening ipv6 listen socket on port 1884.
1456232627: Error: Invalid user 'mosquitto'.

"mosquitto" 用户来自哪里？

Answer 1

根据评论中给出的内容形成实际答案：

websockets 问题归结为未通过修改以下行在 config.mk 中启用 Websockets 进行构建：

WITH_WEBSOCKETS:=no

然后重建。您需要确保安装了 libwebsocket 开发文件。
We were unable to connect to the database 错误是数据库配置问题
Error: Invalid user 'mosquitto'. 是因为您正在尝试运行 mosquitto 作为 root 而 mosquitto 正试图放弃 root 权限以便安全地运行等级。默认情况下，mosquitto 将尝试运行作为名为 mosquitto 的用户，在这种情况下，系统上没有定义 mosquitto 用户，因此会出现错误。您可以通过将以下内容添加到 mosquitto.conf
来更改它将尝试成为的用户
user foo

这会导致 mosquitto 运行作为用户 foo。你真的不应该让 mosquitto 运行ning 成为 root。

mosquitto auth 插件数据库问题

mosquitto auth plugin database issue

postgresql

mqtt

mosquitto