What version of mongodb? Try downgrading to mongo 3.x
After rebooting my hostagator server i get following error
My nodebb is not running
Also, I am not able to take mongo DB backup as I am not able to run mongo commands .
I am really worried about my data , Is my mongodb database data safe ?
please help, what should I do
That depends... how did you install MongoDB? Likely the data is just intact, and you'll want to take a look at the MongoDB logs to see why MongoDB cannot start.
If on Ubuntu, they'd probably be in
And maybe make a backup copy of your mongodb data dirs (while it is not running) and stash it somewhere safe before mucking about too much further.