feat: Add SLE16+ support

[Spectro34]

Enhancement: Add SLE16+ support to kdump role

Reason: SLES systems require different tools for crashkernel configuration. The role currently only supports RedHat family systems using grubby, which is not available on SLES. SLES 16+ uses kdumptool commandline -u to update bootloader crashkernel settings.

Result:

• Added SLES-specific variables in vars/Suse.yml for packages, config file, and service name
• Added kdumptool commandline -u task for SLES 16+ crashkernel updates
• Role now properly configures kdump on SLES 16+ systems

Issue Tracker Tickets (Jira or BZ if any): NA

Summary by Sourcery

Add SLES 16+ and openSUSE support to the kdump role and tighten kdump service management around reboot requirements.

New Features:

• Introduce Suse-specific defaults for kdump packages, configuration file path, and service name to support SLES and openSUSE systems.
• Add a SLES 16+/openSUSE crashkernel update step using kdumptool commandline -u when a reboot is required.

Enhancements:

• Ensure the kdump service is only started when no reboot is required after configuration changes.

[sourcery-ai]

Reviewer's Guide

Adds SLE16+ (and openSUSE 16+) support to the kdump Ansible role by introducing SUSE-specific variables and using kdumptool instead of grubby for crashkernel updates, while skipping kdump service start when a reboot is required.

Sequence diagram for SLES16+ crashkernel update using kdumptool

sequenceDiagram
    actor Admin
    participant AnsibleController
    participant KdumpRole
    participant SLES16Host
    participant Kdumptool

    Admin->>AnsibleController: run kdump role on SLES16Host
    AnsibleController->>KdumpRole: execute tasks/main.yml
    KdumpRole->>SLES16Host: gather ansible_facts
    KdumpRole->>SLES16Host: evaluate kdump_reboot_required

    alt os_family is Suse and distribution_major_version >= 16 and kdump_reboot_required is true
        KdumpRole->>Kdumptool: /usr/sbin/kdumptool commandline -u
        Kdumptool-->>KdumpRole: update bootloader crashkernel setting
    else other systems or versions
        KdumpRole-->>SLES16Host: skip kdumptool task
    end

    alt kdump_reboot_required is false
        KdumpRole->>SLES16Host: start __kdump_service
        SLES16Host-->>KdumpRole: kdump service started
    else kdump_reboot_required is true
        KdumpRole-->>SLES16Host: skip __kdump_service start
    end

    KdumpRole-->>AnsibleController: role execution complete
    AnsibleController-->>Admin: report kdump configuration status

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Flow diagram for kdump role logic with Suse-specific handling

flowchart TD
    A["Start kdump role"] --> B["Gather ansible_facts"]
    B --> C{os_family == 'Suse'?}

    C -- Yes --> D{distribution_major_version >= 16?}
    C -- No --> H["Use non-Suse crashkernel update path"]

    D -- Yes --> E{kdump_reboot_required?}
    D -- No --> H

    E -- true --> F["Run /usr/sbin/kdumptool commandline -u"]
    E -- false --> G["Skip kdumptool crashkernel update"]

    F --> I["Evaluate kdump_reboot_required for service start"]
    G --> I
    H --> I

    I --> J{kdump_reboot_required is false?}

    J -- Yes --> K["Start __kdump_service (e.g. kdump)"]
    J -- No --> L["Skip __kdump_service start (reboot required)"]

    K --> M["End kdump role"]
    L --> M

Loading

Flow diagram for Suse-specific kdump variables in vars/Suse.yml

flowchart LR
    A["Host with os_family == 'Suse'"] --> B["Ansible loads vars/Suse.yml"]
    B --> C["Set __kdump_packages = [iproute, kexec-tools, kdump, openssh-clients]"]
    C --> D["Set __kdump_conf_file = /etc/kdump.conf"]
    D --> E["Set __kdump_service = kdump"]
    E --> F["Tasks use Suse-specific variables for installation and service management"]

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File-Level Changes

Change	Details	Files
Add SLES/SUSE-specific kdump variables so the role can manage packages, config, and service on Suse systems.	Define Suse-specific kdump package list including kexec-tools, kdump, iproute, and openssh-clients. Set Suse-specific kdump configuration file path variable. Set Suse-specific kdump service name variable.	vars/Suse.yml
Implement crashkernel update handling for Suse using kdumptool and adjust service start behavior when reboot is required.	Add a Suse-only task block that runs kdumptool commandline -u on SLES/openSUSE 16+ when a reboot is required. Ensure crashkernel update task is marked changed when executed. Restrict kdump service start to only run when a reboot is not required.	tasks/main.yml

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[sourcery-ai]

Hey there - I've reviewed your changes - here's some feedback:

• The Suse-specific crashkernel update block currently only checks os_family == 'Suse' and version >= 16; consider also restricting by distribution (e.g. SLES vs openSUSE variants) so this doesn’t attempt to run kdumptool on Suse-family systems that may not provide it.
• The kdumptool commandline -u task is forced to changed_when: true, which will always report a change; if possible, make this idempotent (e.g. by inspecting the current crashkernel configuration or using command output/return codes) to avoid unnecessary handler runs and confusing change reports.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- The Suse-specific crashkernel update block currently only checks `os_family == 'Suse'` and version >= 16; consider also restricting by `distribution` (e.g. SLES vs openSUSE variants) so this doesn’t attempt to run `kdumptool` on Suse-family systems that may not provide it.
- The `kdumptool commandline -u` task is forced to `changed_when: true`, which will always report a change; if possible, make this idempotent (e.g. by inspecting the current crashkernel configuration or using command output/return codes) to avoid unnecessary handler runs and confusing change reports.

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[richm]

What package provides kdumptool?

[richm]

This block is not needed - you could just have the single task name: Use kdumptool commandline -u (SLES 16+/openSUSE) without the block and add the when conditions above to that task

[Spectro34]

Looks like sle is not using /etc/kdump.conf and puts everything kernel parameters and service config in /etc/sysconfig/kdump, working on it.

[richm]

@Spectro34 ping?

[richm]

@Spectro34 ping?

@HVSharma12 are you interested in this?

[HVSharma12]

@richm Yes, will take it up on monday +1