Configuring system parameters manually

About this task

If the configured user does not have sudo access, then manually edit the vm.max_map_count and ulimit values:

Set the vm.max_map_count to 262144 on the Elasticsearch virtual machine (VM) by entering the following command:
```
$sudo sysctl -w vm.max_map_count=262144
```
To make the setting persistent across reboots, run the following command:
```
$sudo echo "vm.max_map_count=262144" >> /etc/sysctl.conf
```
Set the ulimit to 65536 on the ASE, ABS, MongoDB, and Elasticsearch hosts. To set the ulimit:
1. Edit /etc/security/limits.conf for increasing the soft limit and hard limit.
2. Add the following two lines for the user that you have created (for example, pi-user):
  pi-user soft nofile 65536 pi-user hard nofile 65536
  If the number of APIs in the environment is greather than 1500, then set the ulimit to 131070.