Question

我正在使用我的覆盆子pi中的node-red直到获得安装新节点的明智想法。现在，我无法启动它。节点红色在启动时处于循环状态。

>    Start Node-RED   Once Node-RED has started, point a browser at
> http://192.168.0.113:1880 On Pi Node-RED works better with the Firefox
> or Chrome browser   Use   node-red-stop                          to
> stop Node-RED Use   node-red-start                         to start
> Node-RED again Use   node-red-log                           to view
> the recent log output Use   sudo systemctl enable nodered.service  to
> autostart Node-RED at every boot Use   sudo systemctl disable
> nodered.service to disable autostart on boot   To find more nodes and
> example flows - go to http://flows.nodered.org   Starting as a systemd
> service. Started Node-RED graphical event wiring tool.. 10 Jan
> 00:29:50 - [info] Welcome to Node-RED
> =================== 10 Jan 00:29:50 - [info] Node-RED version: v0.17.5 10 Jan 00:29:50 - [info] Node.js  version: v6.12.3 10 Jan 00:29:50 -
> [info] Linux 4.9.35-v7+ arm LE 10 Jan 00:29:51 - [info] Loading
> palette nodes [../deps/mpg123/src/output/alsa.c:165] error: cannot
> open device default node: pcm_params.c:2286: snd_pcm_hw_refine:
> Assertion `pcm && params' failed. nodered.service: main process
> exited, code=killed, status=6/ABRT Unit nodered.service entered failed
> state. nodered.service holdoff time over, scheduling restart. Stopping
> Node-RED graphical event wiring tool.... Starting Node-RED graphical
> event wiring tool.... Started Node-RED graphical event wiring tool..
> 10 Jan 00:29:57 - [info] Welcome to Node-RED
> =================== 10 Jan 00:29:57 - [info] Node-RED version: v0.17.5 10 Jan 00:29:57 - [info] Node.js  version: v6.12.3 10 Jan 00:29:57 -
> [info] Linux 4.9.35-v7+ arm LE 10 Jan 00:29:58 - [info] Loading
> palette nodes [../deps/mpg123/src/output/alsa.c:165] error: cannot
> open device default node: pcm_params.c:2286: snd_pcm_hw_refine:
> Assertion `pcm && params' failed. nodered.service: main process
> exited, code=killed, status=6/ABRT Unit nodered.service entered failed
> state. nodered.service holdoff time over, scheduling restart. Stopping
> Node-RED graphical event wiring tool.... Starting Node-RED graphical
> event wiring tool.... Started Node-RED graphical event wiring tool..
> 10 Jan 00:30:04 - [info] Welcome to Node-RED
> =================== 10 Jan 00:30:04 - [info] Node-RED version: v0.17.5 10 Jan 00:30:04 - [info] Node.js  version: v6.12.3 10 Jan 00:30:04 -
> [info] Linux 4.9.35-v7+ arm LE 10 Jan 00:30:05 - [info] Loading
> palette nodes

Answer 1

转到目录/home/pi/.node-red并打开package.json文件。

它应该包含一个依赖项部分，列出您安装的额外节点（假设您是通过编辑器中的Palette Manager完成的）。识别与播放音频相关的任何节点 - 崩溃错误与尝试使用mpg123命令行工具播放音频文件有关。

然后在命令行上运行npm remove NAME-OF-MODULE --save。

然后

Node-RED应该干净地重启。

节点红色循环开始覆盆子pi

1 个答案: