This article talks about solutions for the out of memory error during installing/upgrading Magento on-premise products.
Affected products and versions
- Magento Commerce 2.3.x
- Magento Open Source 2.3.x
Issue
When installing or updating the Magento application or components like extensions, themes, or language packages, using the Web Setup Wizard, an error similar to the following displays:
Could not complete update {"components":[
{"name":"magento/module-bundle-sample-data","version":"100.1.0"}
]} successfully: proc_open(): fork failed - Cannot allocate memoryThe error proc_open(): fork failed - Cannot allocate memory can also display on the command line.
Solution
We recommend you allocate 2GB of memory to PHP to make sure your installation or upgrade succeeds.
If you've already done that, create a swap file on your machine. A Linux machine uses swap space if it needs more memory resources and the RAM is full. The swap space is used for inactive pages in memory.
The following are suggestions only; other options might be available. Consult a network administrator or another knowledgeable resource before you continue. You must run the commands to create a swap file as a user with root privileges.
Swap file on Ubuntu
Use the fallocate command as discussed in these references:
- How To Add Swap on Ubuntu 14.04 (Digitalocean)
- How To Add Swap Space on Ubuntu 16.04 (Digitalocean)
- SwapFaq (help.ubuntu.com)
Swap file on CentOS
Use the mkswap command as discussed in these references: