Chapter 19. Configuring automatic crash dumps by using the kdump RHEL System Role
Chapter 19. Configuring automatic crash dumps by using the kdump RHEL System Role To manage kdump using Ansible, you can use the kdump role, which is one of the RHEL System Roles available in RHEL 7.9. Using the kdump role enables you to specify where to save the contents of the system's memory for later analysis. 19.1. The kdump RHEL System Role The kdump System Role enables you to set basic kernel dump parameters on multiple systems. 19.2. kdump role parameters The parameters used for the kdump RHEL System Roles are: Role Variable Description kdump_path The path to which vmcore is written. If kdump_target is not null, path is relative to that dump target. Otherwise, it must be an absolute path in the root file system. Additional resources The makedumpfile(8) man page. For details about the parameters used in kdump and additional information about the kdump System Role, see the /usr/share/ansible/roles/rhel-system-roles.tlog/README.md file. 19.3. Configuring kdump using RHEL System Roles You can set basic kernel dump parameters on multiple systems using the kdump System Role by running an Ansible playbook. Warning The kdump role replaces the kdump configuration of the managed hosts entirely by replacing the /etc/kdump.conf file. Additionally, if the kdump role is applied, all kdump settings are also replaced, even if they are not specified by the role variables, by replacing the /etc/sysconfig/kdump file. Prerequisites The Ansible Core package is installed on the control machine. You have the rhel-system-roles package installed on the system from which you want to run the playbook. You have an inventory file which lists the systems on which you want to deploy kdump . Procedure Create a new playbook.yml file with the following content: --- - hosts: kdump-test vars: kdump_path: /var/crash roles: - rhel-system-roles.kdump Optional: Verify playbook syntax. Run the playbook on your inventory file: Additional resources For a detailed reference on kdump role variables, see the README.md or README.html files in the /usr/share/doc/rhel-system-roles/kdump directory. See Preparing the control node and managed nodes to use RHEL System Roles Documentation installed with the rhel-system-roles package /usr/share/ansible/roles/rhel-system-roles.kdump/README.html
--- - hosts: kdump-test vars: kdump_path: /var/crash roles: - rhel-system-roles.kdump ansible-playbook --syntax-check playbook.yml ansible-playbook -i inventory_file /path/to/file/playbook.yml