knife zero converge "name:xxx-*" ERROR: Too many open files about knife-zero

[sawanoboly]

If the error message is correct, there may be too many files in the recipe. If your environment is macos, try the following command to check the maxfiles.

$ ulimit -n
2560

If this value is a low number, such as 256, which is the default, try temporarily increasing the limit with the following command and try again.

$ ulimit -n NUMBER

[hendych]

Hi @sawanoboly thanks for the suggestion.
I ran knife zero converge "name:mynode*" -C 5 -x my_user -P my_password it throws error

ERROR: NoMethodErrorundefined method `send_as_needed' for nil:NilClass
ERROR: /Users/xxx/.gem/gems/knife-zero-2.4.1/lib/knife-zero/net_ssh_multi_patch.rb:94:in `keepalive_if_needed'
     /Users/xxx/.gem/gems/knife-zero-2.4.1/lib/knife-zero/net_ssh_multi_patch.rb:117:in `block in process'
     /Users/xxx/.gem/gems/net-ssh-multi-1.2.1/lib/net/ssh/multi/server_list.rb

however after I ran ulimit -n NUMBER knife able to run on all my nodes.

Environment

• Knife 2.4.1
• Chef 17.7.29

[sawanoboly]

To identify the problem, I need some information.

• Workstation environment
• Number of nodes you want to run simultaneously

Also try to limit the number of concurrent executions with the -C, --concurrency NUM option.

http://knife-zero.github.io/30_subcommands/#converge