Dear colleagues. I am starting node-red with ubuntu and I have the following problem. I have installed it on ubuntu, and it runs on localhost: 1880. It runs directly when Linux starts. The problem I have had when trying to load node-red-contrib-modbus. It gives me the following error
Failed to install: node-red-contrib-modbus
Install failed Check the log for more information
Later I have installed it with npm from the ubuntu terminal. I think I have done it in the correct directory, (node_modules), but it still does not appear on the palette. If it seems that it is loaded as we see in the screenshot.
2021-05-21T18:15:59.520Z npm install --no-audit --no-update-notifier --no-fund --save --save-prefix=~ --production node-red-contrib-modbus@5.14.0@serialport /bindings@9.0.7 install /root/snap/node-red/675/node_modules/@serialport /bindings@serialport /bindings@ || node-gyp rebuild@serialport /bindings/build/Release'@serialport /bindings@serialport /bindings@9.0.7 install: prebuild-install --tag-prefix @serialport/bindings@ || node-gyp rebuild@serialport /bindings@9.0.7 install script.
Someone has a solution
Colin
21 May 2021 20:25
2
Are you using a snap install of node-red? If so is there a reason for using that rather than the recommended method for Ubuntu, Raspbian and other Debian derivatives?
That is not the correct folder, though I can't say which is the correct folder other than it should be the one where you flows and settings files are. If you start node-red in a terminal the startup log will tell you where that is. If you have used the recommended install method it will be ~/.node-red
Thanks for your reply. I used npm as described in the link.
https://nodered.org/docs/getting-started/local
Colin
21 May 2021 20:42
4
OK, you can install it yourself if you want (note that at the top of that page is the link to the Ubuntu install).</> button at the top of the forum entry window.
This is what comes out when starting node-red from the terminal. It stays activated even if I close the terminal.
santos@tecnoce:~$ node-red
21 May 22:49:52 - [info] Node-RED version: v1.3.5
Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
21 May 22:49:53 - [error] Unable to listen on http://127.0.0.1:1880/
Colin
21 May 2021 20:59
6
That is probably because you already have node-red running.
That tells us you need to be in that folder if you want to install a node using npm from the command line.
Yes, node-red is always running, even if I close the terminal. Before, I worked with windows and that didn't happen, I had to run node-red every time I started the computer.
Colin
21 May 2021 21:08
8
If you installed the usual scripts then you can stop and start usingnode-red-stopnode-red-start
If you do install a node from the command line you need to restart node-red before it will see the new nodes.
Colin:
node-red-stop
When I type node-red-stop it tells me that it cannot find the command.
Colin
21 May 2021 21:20
10
That is because you did not use the recommended script, which would install the commands for you. You can still run that script now if you want, it should add the stuff you have not installed yourself.
Thanks, I hadn't installed the scripts. I am doing it minus this command which does not work.
I am literally typing it in the console, but I don't know if anything else is necessary.
bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)
Colin
22 May 2021 06:04
12
What happens when you run it? Have you installed curl?
Good Morning. Thanks for your interest. I think I know where the problems are. I uninstalled node-red. But then I have realized that ubuntu has it integrated. With node-red uninstalled it works the same on localhosthttp://localhost:1880/#flow/41328911.f504f8
That is why it gave me the error of the port has occupied. Nodes can be installed here but it does not allow modbus nodes, which is where I detected the problem initially.
I paste the error log again when trying to install node-red-contribution-modbus
36:59.728Z Install : node-red-contrib-modbus 5.14.0
2021-05-22T09:36:59.799Z npm install --no-audit --no-update-notifier --no-fund --save --save-prefix=~ --production node-red-contrib-modbus@5.14.0@serialport /bindings@9.0.7 install /root/snap/node-red/675/node_modules/@serialport /bindings@serialport /bindings@ || node-gyp rebuild@serialport /bindings/build/Release'@serialport /bindings@serialport /bindings@9.0.7 install: prebuild-install --tag-prefix @serialport/bindings@ || node-gyp rebuild@serialport /bindings@9.0.7 install script.
2021-05-22T09:52:14.345Z Install : node-red-contrib-modbus 5.14.0
2021-05-22T09:52:14.361Z npm install --no-audit --no-update-notifier --no-fund --save --save-prefix=~ --production node-red-contrib-modbus@5.14.0@serialport /bindings@9.0.7 install /root/snap/node-red/675/node_modules/@serialport /bindings@serialport /bindings@ || node-gyp rebuild@serialport /bindings/build/Release'@serialport /bindings@serialport /bindings@9.0.7 install: prebuild-install --tag-prefix @serialport/bindings@ || node-gyp rebuild@serialport /bindings@9.0.7 install script.
Colin
22 May 2021 09:54
14
Running the script would have uninstalled the original node-red. Have you managed to run it yet? If not then do these commands work?ping raw.githubusercontent.comcurl https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered
Running ping gives the following
@tecnoce :~/node_modules$ ping raw.githubusercontent.com raw.githubusercontent.com (185.199.111.133) 56(84) bytes of data.cdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=1 ttl=57 time=15.8 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=2 ttl=57 time=17.2 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=3 ttl=57 time=38.6 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=4 ttl=57 time=17.8 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=5 ttl=57 time=16.6 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=6 ttl=57 time=17.6 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=7 ttl=57 time=30.7 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=8 ttl=57 time=38.2 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=9 ttl=57 time=16.7 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=10 ttl=57 time=16.5 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=11 ttl=57 time=16.3 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=12 ttl=57 time=16.9 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=13 ttl=57 time=47.6 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=14 ttl=57 time=16.7 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=15 ttl=57 time=18.0 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=16 ttl=57 time=83.6 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=17 ttl=57 time=25.3 mscdn-185-199-111-133.github.com (185.199.111.133): icmp_seq=18 ttl=57 time=44.8 mscdn-185-199-111-133.github.com (
Colin
22 May 2021 10:27
16
OK, that shows you can access the server. Does the curl command work?
I've used the curl command like this but it doesn't work.
bash <(curl -sl://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)
When you uninstalled. You did uninstall the snap version didn’t you ? From the log above it looks like it’s still the running one
dceejay:
snap
I'm checking. I uninstalled sap and have also uninstalled nodejs. However node-red still works on localhost. I get the impression that it is another version built into the ubuntu system.
So you did
sudo snap remove node-red
