Change Folder of Logs of PM2 and NPM

sdetweil

@thgmirror you could make a linked folder from their orignal place to /var/log

see the ln command

thgmirror

@sdetweil Thank you for your reply, but I prefer to store the log-files physically at var/log.
I currently use var/log as a RAMDisk, because I normally don’t need log-files. So I avoid a lot of write access to the SD-card, it is faster and safer for the SD…and after a reboot, everything is fine:-)
My attempt is, to do this for npm and PM2-logs, too.
As far as I know, I can start PM2 with parameters -o and -e and the new foldernames, but they destroyed my installation. Btw., how do you start PM2 in your script? I would like to add the parameters so it is automatically connected after reboot.
Thomas

sdetweil

@thgmirror no… you misunsderstand the point

make a folder in /var/log where u want them to BE

then in the users home folder create a ‘fake’ .pm2 folder for the pm2 stuff
which points to the /var/log folder using the ln command

the pm2 app will be happy and NEVER know that the REAL location is /var/log

thgmirror

@sdetweil Ah, OK, I will give it a try:-)

sdetweil

@thgmirror in the users home foder

# get into the users home folder
cd ~
# move the .pm2 folder to /var/log, pick a name
mv .pm2 /var/log/pm2.real
# make a link to it from users home folder
ln -s  /var/log/pm2.real .pm2

oops, edited ln…

target <- link
from /var/log
drwxrwxr-x 5 sam sam 4096 Apr 9 10:29 .pm2/

then in home folder

ls .pm2 will show files
ls -laF
will show that .pm2 is a link (and where to)
from users home folder
lrwxrwxrwx 1 sam sam 13 Apr 9 10:31 .pm2 -> /var/log/.pm2/

thgmirror

@sdetweil but you know, a RAMDisk is volatile, I can’t copy something to a RAMDisk in forehand…it is gone after a reboot.

sdetweil

@thgmirror then u will have to create target folder on boot…

note that pm2 stores config info in there too(the jobs it manages) … so it MUST be persistent

but you could just link the logs folder from the users real .pm2 folder (the stuff that is volatile…)

well, logs are useful but…

thgmirror

@sdetweil and where is the PM2 start?
Of course it must be persistant, but I don’t want to change the location of the PM2-configuration.

sdetweil

@thgmirror someplace in the .pm2 folder… no idea myself…

the .pm2/logs folder I know

never examined the others

sdetweil

@thgmirror and there is a $HOME/.npm folder for npm, but I have no idea what all is stored there, and what needs to be persistent and not