Trying to SSH into Opal2 gives the following output. Seems like the number of open files has perhaps reached it's max. ls doesn't work, but echo does.
./~ ❯❯❯ ssh opal2 ⏎
Last login: Tue Dec 8 13:40:27 2020 from X.X.X.X
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: Resource temporarily unavailable
-bash-4.2$ ls
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash: fork: retry: No child processes
-bash-4.2$ echo "help"
help
