Recipe for nvm?

[binarykitchen]

There is a problem and need advice/solution how to solve it.

You all know nvm, a great tool to select a node.js version. I have it installed on my server for the nodejs user. But pm2 during server restart runs on root user and currently does NOT tell nvm to load the default node.js version.

How do you do this? I think, in pm2-init.sh under init.d we need to add a pre-run script to call nvm first?

[fresheneesz]

There should be a way for you to change what user is used to start pm2 on server start. Then you can start pm2 with whatever user you're using nvm with.

[binarykitchen]

Nope, this didn't help.

So, I edited pm2-init.sh at the top for the nodejs user. First I source nvm, adjust some paths and then it worked like a charm after a server restart:

source /home/nodejs/.nvm/nvm.sh

NODE_PATH=$NVM_BIN/node
PM2=$NVM_BIN/../lib/node_modules/pm2/bin/pm2

NAME=pm2
USER=nodejs
DEFAULT=/etc/default/$NAME

export PATH=/usr/bin:$PATH:$NODE_PATH
export PM2_HOME="/home/nodejs/.pm2"

I think this should be in the source code somehow. By detecting in the USER home whether nvm is installed and then source it!

[animedbz16]

Why not use the users .bashrc file to source the NVM path. This is how we
do this since nvm may not be installed in the same place for each user on
various OS environments.
On Tue, May 17, 2016 at 5:30 PM Michael Heuberger notifications@github.com
wrote:

Nope, this didn't help.

So, I edited pm2-init.sh at the top for the nodejs user. First I source
nvm, adjust some paths and then it worked like a charm after a server
restart:

source /home/nodejs/.nvm/nvm.sh

NODE_PATH=$NVM_BIN/node
PM2=$NVM_BIN/../lib/node_modules/pm2/bin/pm2

NAME=pm2
USER=nodejs
DEFAULT=/etc/default/$NAME

export PATH=/usr/bin:$PATH:$NODE_PATH
export PM2_HOME="/home/nodejs/.pm2"

I think this should be in the source code somehow. By detecting in the
USER home whether nvm is installed and then source it!

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#2171 (comment)

[binarykitchen]

using .zshrc here. and running it during boot under root is probably a bad idea.

my point is: why don't you add an automatic nvm detection for the given USER?

[animedbz16]

I'm not sure I understand this. Your pm2-init.sh file which you included above is loading as root to start the pm2 service as the nodejs user. If pm2 is not starting properly through this service because your nodejs isn't aware of where pm2 is located then you should updates the nodejs user to source the NVM path from that user.

We don't have any issues with having PM2 automatically starting at boot (using the default generated pm2-init.sh) and with running PM2 from a user which automatically sources NVM from within its own .bashrc file, which then loads the users default node environment which includes the pm2 executable installed globally under that version of node managed from NVM.

[binarykitchen]

Understand. One question for now. Why does it have to be .bashrc when that user only has .zshrc?

[animedbz16]

It doesn't have to be .bashrc. On our environment, bash is the default shell for users, so when this service starts, it attempts to execute pm as this user which will load up the user environment settings which will load up everything in .bashrc. If your environment uses the z shell (.zshrc) then those settings should likely go there. It depends on your system and settings.

For example, you can see my default shell is bash, so when root executes a command and logs into my user to do this, it will launch into the bash shell for this, so I need to use the .bashrc to define user defined environment settings to they will be loaded/available.

[user@media ~]$ cat /etc/passwd | grep user
user:x:1000:1000:user:/home/user:/bin/bash

[binarykitchen]

yep, got it and know that. still, doesnt work.

here are the steps to reproduce and please give it a try

1. create new user that uses zsh instead of bash
2. remove any nodejs binaries in /usr/bin (or remove via apt-get)
3. install latest nvm
4. install latest nodejs via nvm and set it to default
5. install latest pm2 globally
6. set up a small nodejs project using and running on pm2
7. save that project to pm2 (dump)
8. ensure that nodejs project is running fine
9. restart linux server
10. after few minutes that nodejs project is still NOT running (pm2 ls lists nothing)

[soyuka]

Do you have something like this in your .zshrc:

# Loads nvm
[ -s "${HOME}/.nvm/nvm.sh" ] && . "${HOME}/.nvm/nvm.sh"

Ensure that you've the startup script (or run pm2 startup).

[binarykitchen]

yes i have this at bottom of my .zshrc

export NVM_DIR="/home/nodejs/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"  # This loads nvm

of course, already did pm2 startup before, here evidence

$ sudo su -c "env PATH=$PATH:/home/nodejs/.nvm/versions/node/v6.1.0/bin pm2 startup ubuntu -u nodejs --hp /home/nodejs"                                                                                                               
[PM2] Spawning PM2 daemon
[PM2] PM2 Successfully daemonized
[PM2] Generating system init script in /etc/init.d/pm2-init.sh
[PM2] Making script booting at startup...
[PM2] -ubuntu- Using the command:
      su -c "chmod +x /etc/init.d/pm2-init.sh && update-rc.d pm2-init.sh defaults"

 System start/stop links for /etc/init.d/pm2-init.sh already exist.
[PM2] Done.

still, the above doesnt work and i have to manually tweak pm2-init.sh like mentioned above.

[evollu]

I'm getting the same issue, npm not found.
there is no issue if I directly ssh to that server, only when using pm2

I'm running ubuntu 16 (in azure) and have

export NVM_DIR="/home/nodejs/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"  # This loads nvm

in ~/.profile

[vmarchaud]

Should be good with new startup system published with pm2 v2.2