Clearly the system has run out of memory.
The problem is that the only way to solve this issue is to restart from the digital ocean terminal. As any command I type gets the same response:
-bash: fork: Cannot allocate memory
I have a 2Gb droplet and I don’t want to jump to the conclusion of increasing memory. Is there a way to ensure that I will always have enough memory to ssh and hit cli commands? Also is there a way to find out exactly what has caused it?
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This question was answered by @kamaln7:
Have you tried adding swap to your droplet? How To Add Swap on Ubuntu 14.04 | DigitalOcean
I would suggest rebooting your droplet, sshing in and then running (h)top. Keep an eye on the memory usage and see what process is using up all the memory.
You can see the comment here.
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