Run terminal command from nodejs app through pm2
I have an express server running under pm2 with just one route:
app.get('/', (req, res) => {
res.sendFile(__dirname + '/index.html);
}
and a socket.io event handler that listens for "open youtube" (from the previously sent index.html)
io.on('connection', function(socket){
socket.on('open youtube', function() {
exec('start chrome youtube.com'); //yes ik, this is a windows-only solution
console.log('Opening youtube...');
});
});
While everything does work, when emit is handled on the express server, the only part that works is the console.log() and not the exec() ( const exec = require('child_process').exec; )
What's the reason pm2 doesn't allow me to run a cmd command and/or how can I run cmd command from a nodejs app running under pm2 ?
EDIT:
When I run the server with npm start and not as a pm2 process, it opens a new tab ( as expected ) with youtube.com
EDIT 2:
For some reason, after I run pm2 reload ecosystem.config.js and pm2 save, it did work. The only change I made to ecosystem.config.js was to change exec_mode to exec_mode: 'cluster' instead of fork which is the default value.
I don't know if this was the reason or not.
javascript node.js terminal socket.io pm2
asked Nov 17 '18 at 16:32
johnchar
391519
add a comment |
I have an express server running under pm2 with just one route:
app.get('/', (req, res) => {
res.sendFile(__dirname + '/index.html);
}
and a socket.io event handler that listens for "open youtube" (from the previously sent index.html)
io.on('connection', function(socket){
socket.on('open youtube', function() {
exec('start chrome youtube.com'); //yes ik, this is a windows-only solution
console.log('Opening youtube...');
});
});
While everything does work, when emit is handled on the express server, the only part that works is the console.log() and not the exec() ( const exec = require('child_process').exec; )
What's the reason pm2 doesn't allow me to run a cmd command and/or how can I run cmd command from a nodejs app running under pm2 ?
EDIT:
When I run the server with npm start and not as a pm2 process, it opens a new tab ( as expected ) with youtube.com
EDIT 2:
For some reason, after I run pm2 reload ecosystem.config.js and pm2 save, it did work. The only change I made to ecosystem.config.js was to change exec_mode to exec_mode: 'cluster' instead of fork which is the default value.
I don't know if this was the reason or not.
javascript node.js terminal socket.io pm2
asked Nov 17 '18 at 16:32
johnchar
391519
add a comment |
I have an express server running under pm2 with just one route:
app.get('/', (req, res) => {
res.sendFile(__dirname + '/index.html);
}
and a socket.io event handler that listens for "open youtube" (from the previously sent index.html)
io.on('connection', function(socket){
socket.on('open youtube', function() {
exec('start chrome youtube.com'); //yes ik, this is a windows-only solution
console.log('Opening youtube...');
});
});
While everything does work, when emit is handled on the express server, the only part that works is the console.log() and not the exec() ( const exec = require('child_process').exec; )
What's the reason pm2 doesn't allow me to run a cmd command and/or how can I run cmd command from a nodejs app running under pm2 ?
EDIT:
When I run the server with npm start and not as a pm2 process, it opens a new tab ( as expected ) with youtube.com
EDIT 2:
For some reason, after I run pm2 reload ecosystem.config.js and pm2 save, it did work. The only change I made to ecosystem.config.js was to change exec_mode to exec_mode: 'cluster' instead of fork which is the default value.
I don't know if this was the reason or not.
javascript node.js terminal socket.io pm2
asked Nov 17 '18 at 16:32
johnchar
391519
I have an express server running under pm2 with just one route:
app.get('/', (req, res) => {
res.sendFile(__dirname + '/index.html);
}
and a socket.io event handler that listens for "open youtube" (from the previously sent index.html)
io.on('connection', function(socket){
socket.on('open youtube', function() {
exec('start chrome youtube.com'); //yes ik, this is a windows-only solution
console.log('Opening youtube...');
});
});
While everything does work, when emit is handled on the express server, the only part that works is the console.log() and not the exec() ( const exec = require('child_process').exec; )
What's the reason pm2 doesn't allow me to run a cmd command and/or how can I run cmd command from a nodejs app running under pm2 ?
EDIT:
When I run the server with npm start and not as a pm2 process, it opens a new tab ( as expected ) with youtube.com
EDIT 2:
For some reason, after I run pm2 reload ecosystem.config.js and pm2 save, it did work. The only change I made to ecosystem.config.js was to change exec_mode to exec_mode: 'cluster' instead of fork which is the default value.
I don't know if this was the reason or not.
javascript node.js terminal socket.io pm2
javascript node.js terminal socket.io pm2
asked Nov 17 '18 at 16:32
johnchar
391519
asked Nov 17 '18 at 16:32
johnchar
391519
edited Nov 17 '18 at 19:36
asked Nov 17 '18 at 16:32
johnchar
391519
asked Nov 17 '18 at 16:32
johnchar
391519
asked Nov 17 '18 at 16:32
johnchar
391519
391519
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
exec(String) is an asynchronous function,
You may have an error which your'e not aware of, pass a callback like this:
exec('start chrome youtube.com', (error, stdout, stderr) => {
if (error) {
// handle error
} else {
// handle success
}
});
And you can also use the synchronous version
try {
let res = execSync('start chrome youtube.com');
} catch(err){
// handle error
return;
}
// handle success
answered Nov 17 '18 at 19:10
Mazki516
5731416
with the first approachif(error) else, theelsestatement is ran and I successfully runconsole.log('youtube opened');but chrome does not open
– johnchar
Nov 17 '18 at 19:22
Please print all (stdout, stderr) to verify you don't have any error
– Mazki516
Nov 17 '18 at 19:24
b.t.w, "start chrome url" is not a default alias . how did you setup this alias?
– Mazki516
Nov 17 '18 at 19:25
1
You changed how pm2 scales your app . With cluster mode (load balancing between workers) or just forks (individual workers)
– Mazki516
Nov 17 '18 at 19:37
1
I guess all it needed was a reload... Thank you for your time though
– johnchar
Nov 17 '18 at 19:40
|
show 2 more comments
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
exec(String) is an asynchronous function,
You may have an error which your'e not aware of, pass a callback like this:
exec('start chrome youtube.com', (error, stdout, stderr) => {
if (error) {
// handle error
} else {
// handle success
}
});
And you can also use the synchronous version
try {
let res = execSync('start chrome youtube.com');
} catch(err){
// handle error
return;
}
// handle success
answered Nov 17 '18 at 19:10
Mazki516
5731416
with the first approachif(error) else, theelsestatement is ran and I successfully runconsole.log('youtube opened');but chrome does not open
– johnchar
Nov 17 '18 at 19:22
Please print all (stdout, stderr) to verify you don't have any error
– Mazki516
Nov 17 '18 at 19:24
b.t.w, "start chrome url" is not a default alias . how did you setup this alias?
– Mazki516
Nov 17 '18 at 19:25
1
You changed how pm2 scales your app . With cluster mode (load balancing between workers) or just forks (individual workers)
– Mazki516
Nov 17 '18 at 19:37
1
I guess all it needed was a reload... Thank you for your time though
– johnchar
Nov 17 '18 at 19:40
|
show 2 more comments
exec(String) is an asynchronous function,
You may have an error which your'e not aware of, pass a callback like this:
exec('start chrome youtube.com', (error, stdout, stderr) => {
if (error) {
// handle error
} else {
// handle success
}
});
And you can also use the synchronous version
try {
let res = execSync('start chrome youtube.com');
} catch(err){
// handle error
return;
}
// handle success
answered Nov 17 '18 at 19:10
Mazki516
5731416
with the first approachif(error) else, theelsestatement is ran and I successfully runconsole.log('youtube opened');but chrome does not open
– johnchar
Nov 17 '18 at 19:22
Please print all (stdout, stderr) to verify you don't have any error
– Mazki516
Nov 17 '18 at 19:24
b.t.w, "start chrome url" is not a default alias . how did you setup this alias?
– Mazki516
Nov 17 '18 at 19:25
1
You changed how pm2 scales your app . With cluster mode (load balancing between workers) or just forks (individual workers)
– Mazki516
Nov 17 '18 at 19:37
1
I guess all it needed was a reload... Thank you for your time though
– johnchar
Nov 17 '18 at 19:40
|
show 2 more comments
exec(String) is an asynchronous function,
You may have an error which your'e not aware of, pass a callback like this:
exec('start chrome youtube.com', (error, stdout, stderr) => {
if (error) {
// handle error
} else {
// handle success
}
});
And you can also use the synchronous version
try {
let res = execSync('start chrome youtube.com');
} catch(err){
// handle error
return;
}
// handle success
answered Nov 17 '18 at 19:10
Mazki516
5731416
exec(String) is an asynchronous function,
You may have an error which your'e not aware of, pass a callback like this:
exec('start chrome youtube.com', (error, stdout, stderr) => {
if (error) {
// handle error
} else {
// handle success
}
});
And you can also use the synchronous version
try {
let res = execSync('start chrome youtube.com');
} catch(err){
// handle error
return;
}
// handle success
answered Nov 17 '18 at 19:10
Mazki516
5731416
answered Nov 17 '18 at 19:10
Mazki516
5731416
answered Nov 17 '18 at 19:10
Mazki516
5731416
answered Nov 17 '18 at 19:10
Mazki516
5731416
5731416
with the first approachif(error) else, theelsestatement is ran and I successfully runconsole.log('youtube opened');but chrome does not open
– johnchar
Nov 17 '18 at 19:22
Please print all (stdout, stderr) to verify you don't have any error
– Mazki516
Nov 17 '18 at 19:24
b.t.w, "start chrome url" is not a default alias . how did you setup this alias?
– Mazki516
Nov 17 '18 at 19:25
1
You changed how pm2 scales your app . With cluster mode (load balancing between workers) or just forks (individual workers)
– Mazki516
Nov 17 '18 at 19:37
1
I guess all it needed was a reload... Thank you for your time though
– johnchar
Nov 17 '18 at 19:40
|
show 2 more comments
with the first approachif(error) else, theelsestatement is ran and I successfully runconsole.log('youtube opened');but chrome does not open
– johnchar
Nov 17 '18 at 19:22
Please print all (stdout, stderr) to verify you don't have any error
– Mazki516
Nov 17 '18 at 19:24
b.t.w, "start chrome url" is not a default alias . how did you setup this alias?
– Mazki516
Nov 17 '18 at 19:25
1
You changed how pm2 scales your app . With cluster mode (load balancing between workers) or just forks (individual workers)
– Mazki516
Nov 17 '18 at 19:37
1
I guess all it needed was a reload... Thank you for your time though
– johnchar
Nov 17 '18 at 19:40
with the first approach
if(error) else, the else statement is ran and I successfully run console.log('youtube opened'); but chrome does not open– johnchar
Nov 17 '18 at 19:22
with the first approach
if(error) else, the else statement is ran and I successfully run console.log('youtube opened'); but chrome does not open– johnchar
Nov 17 '18 at 19:22
Please print all (stdout, stderr) to verify you don't have any error
– Mazki516
Nov 17 '18 at 19:24
Please print all (stdout, stderr) to verify you don't have any error
– Mazki516
Nov 17 '18 at 19:24
b.t.w, "start chrome url" is not a default alias . how did you setup this alias?
– Mazki516
Nov 17 '18 at 19:25
b.t.w, "start chrome url" is not a default alias . how did you setup this alias?
– Mazki516
Nov 17 '18 at 19:25
1
1
You changed how pm2 scales your app . With cluster mode (load balancing between workers) or just forks (individual workers)
– Mazki516
Nov 17 '18 at 19:37
You changed how pm2 scales your app . With cluster mode (load balancing between workers) or just forks (individual workers)
– Mazki516
Nov 17 '18 at 19:37
1
1
I guess all it needed was a reload... Thank you for your time though
– johnchar
Nov 17 '18 at 19:40
I guess all it needed was a reload... Thank you for your time though
– johnchar
Nov 17 '18 at 19:40
|
show 2 more comments
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