问题
On my production server, which is hosted on digital ocean, if that helps, Ubuntu 12.04, I have RoR 4 and rake 10.1.1.
When I deploy, I run rake assets:precompile, and I've noticed a strange issue where if I have a rails console session open when I do this, I get the following output
~# rake assets:precompile
~# Killed
It's mainly annoying, but the reason I want it resolved is when hiring new developers, there will be deploy/console conflict nightmare.
Thanks,
Brian
回答1:
Your precompile process is probably being killed because you are running out of RAM. You can confirm this by running top in another ssh session. To fix this, create a swap file that will be used when RAM is full.
Create SWAP Space on Ubuntu You will probably end up needing some swap space if you plan on using Rails on Digital Ocean 512MB RAM droplet. Specifically, you will run out of RAM when compiling the assets resulting in the process being quietly killed and preventing successful deployments.
To see if you have a swap files:
sudo swapon -s
No swap file shown? Check how much disk space space you have:
df
To create a swap file:
Step 1: Allocate a file for swap
sudo fallocate -l 2048m /mnt/swap_file.swap
Step 2: Change permission
sudo chmod 600 /mnt/swap_file.swap
Step 3: Format the file for swapping device
sudo mkswap /mnt/swap_file.swap
Step 4: Enable the swap
sudo swapon /mnt/swap_file.swap
Step 5: Make sure the swap is mounted when you Reboot. First, open fstab
sudo nano /etc/fstab
Finally, add entry in fstab (only if it wasn't automatically added)
# /etc/fstab
/mnt/swap_file.swap none swap sw 0 0
Save and exit. You're done adding swap. Now your rake assets:precompile should complete without being killed.
回答2:
Rake assets:precompile is a memory eating process.
So make sure you have enough RAM before using that command
回答3:
I have an opsworks stack on aws and I'd to change my instance type. I was using t1.micro and i just changed it to t1.small
Thanks a lot.
回答4:
This uses a lot of RAM. To check how much available RAM memory you have free, use the command
free -m
This will show the available RAM in MB
A temporary solution would be to create a swap space.
I was going to add this as a comment to Jason R post above before you go into his steps, just to make sure it is a RAM resource issue.
you could also run
echo {1,2,3} > /proc/sys/vm/drop_caches
to clean up the cache memory, but it probably will not free up enough.
回答5:
This might help someone. For me, since i couldn't use 'fallocate' command, i had to do:
sudo dd if=/dev/zero of=/mnt/4GB.swap bs=4096 count=1048576
sudo chmod 600 /mnt/4GBB.swap
sudo mkswap /mnt/4GB.swap
sudo swapon /mnt/4GB.swap
来源：https://stackoverflow.com/questions/22272339/rake-assetsprecompile-gets-killed-when-there-is-a-console-session-open-in-produ