Create TAS user group and TAS user accounts (TAS 8)

Create a TAS user group, and add the three types of TAS users, the Installation, Application, and Maintenance users.

The TAS user group and the TAS Application Management (both standard and advanced) user accounts support dynamic user IDs. If the default IDs are in use or conflict with your requirements, assign custom IDs by adding them to the inventory file during installation.

You must create the TAS user group and the TAS users on each of the TAS servers in your deployment.

Before you begin

Install RPMs for TAS servers (TAS 8)

Procedure

Create a TAS user group with ID 5000, and default name tas:
Copy
```
groupadd -g 5000  tas
```
If you change the default ID of the tas group, you must also change it in the inventory file during installation.
Create an Installation service user:
1. Add the installation user with user name tas_inst to the TAS user group:
  Copy
```
useradd -g 5000 -G docker -u 5002 tas_inst
```
2. Change the password for the tas_inst user:
  Copy
```
passwd tas_inst
```
Create an Application Management service user:
1. Add the application user with user name tas_app to the TAS user group:
  Copy
```
useradd -g 5000 -G docker -u 5001 tas_app
```
  If you change the default ID of the tas_app user, you must also change it in the inventory file during installation.
2. Change the password for the tas_app user:
  Copy
```
passwd tas_app
```
3. Disable login for tas_app user:
  Copy
```
usermod -s /usr/sbin/nologin tas_app
```
Create an Advanced Application Management service user:
1. Add the Advanced Application Management user with the user name tas_app_advanced to the TAS user group:
  Copy
```
useradd -g 5000 -G docker -u 5004 tas_app_advanced
```
  If you change the default ID of the tas_app_advanced user, you must also change it in the inventory file during installation.
2. If required, change the default password for the tas_app_advanced user:
  Copy
```
passwd tas_app_advanced
```
3. Disable login for the tas_app_advanced user:
  Copy
```
usermod -s /usr/sbin/nologin tas_app_advanced
```
Enable processes run by tas_inst to continue after the user logs out:
Copy
```
loginctl enable-linger tas_inst
```

What to do next

Prepare TAS Management server