The core role, cloudera.exe.sequence, employs Ansible tags to drive runlevel-like functionality for CDP deployments. The sequence role ensures that each runlevel state is met, coordinating the tearing down of higher-level runlevels, setting up lower-level runlevels, and reconciling existing state of current runlevels.
Deployment Runlevels
| Runlevel | Tag |
|---|---|
| Teardown | teardown |
| Validation | validation |
| Initialization | none |
| Infrastructure | infra |
| Platform | plat |
| Runtime | run |
| Installation | install (not implemented by cloudera.exe) |
| Application | app (not implemented by cloudera.exe) |
| Operations | none |
Using these tags within a playbook that has imported cloudera.exe.sequence is straightforward Ansible.
# Validate the configuration
ansible-playbook main.yml -t validate
# Set up everything (infra, platform, runtime)
ansible-playbook main.yml
# Destroy the runtime, but keep/reconcile infra and plat
ansible-playbook main.yml -t plat
# Rebuild the runtime, but skip the infra reconciliation
ansible-playbook main.yml -t run --skip-tags infra
# Take it all down
ansible-playbook main.yml -t teardownDestroys all cloud provider and CDP assets, subject to configuration allowances. This runlevel is in scope of the cloudera.exe collection.
The runlevel is invoked with the teardown tag.
Checks the incoming configuration parameters for errors and misalignment. No external interaction. This runlevel is in scope of the cloudera.exe collection.
The runlevel is invoked with the validate tag.
Checks and initializes authentication and authorization for the cloud and VM control planes as well as validate access to bare-metal systems. External interaction is read-only. This runlevel is in scope of the cloudera.exe collection.
The runlevel is not directly invocable.
Manages cloud-provider resources, VM control planes, instance OS and services management, networking, etc. This runlevel is in scope of the cloudera.exe collection.
The runlevel is invoked with the infra tag.
Installs and manages CDP and its shared and base elements, e.g. SDX, Credentials, IAM users and groups. This runlevel is in scope of the cloudera.exe collection.
The runlevel is invoked with the plat tag.
Installs and manages the computing infrastructures of CDP, e.g. DWX, CML. This runlevel is in scope of the cloudera.exe collection.
The runlevel is invoked with the run tag.
Executes post-runtime and platform configurations. This runlevel is outside the scope of the cloudera.exe collection. Actual runtime projects should define or import additional runlevel roles and/or tasks as required.
The suggested tag for this runlevel is install.
Executes user- and application-specific tasks, e.g. table definitions, security policy configurations, data loading and management. This runlevel is outside the scope of the cloudera.exe collection. Actual runtime projects should define or import additional runlevel roles and/or tasks as required.
The suggested tag for this runlevel is app.
Executes management tasks broadly. This runlevel is outside the scope of the cloudera.exe collection. Actual runtime projects should define or import additional runlevel roles and/or tasks as required.
There are no suggested tags for this runlevel.