| #Apigee OPDK Playbook Maintenance Cassandra Replication Factor |
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| This playbook uses the roles to modify the Cassandra Replication Factor using Zero Downtime . |
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| ### Download Roles |
| Use ```ansible-galaxy``` to download the required roles. |
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| ```ansible-galaxy install -r requirements.yml``` |
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| ### replication_factor_update.yml usage |
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| The ```replication_factor_update.yml``` requires that you specify the ```replication_factor```, |
| ```opdk_region``` and the ```hosts```. |
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| ```ansible-playbook replication_factor_update.yml -e hosts=dc-1-ds -e opdk_region=dc-1 -e replication_factor=3``` |
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| ### update.yml usage |
| This playbook contains a convenience playbook that uses the ```replication_factor_update.yml``` |
| and requires that you specify only the ```replication_factor```. |
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| ```ansible-playbook update.yml -vv -b -e replication_factor=3``` |
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| ### Tags |
| Playbook Name | Tag Name | Description |
| --- | --- | ---- |
| update.yml | dc-1 | All tasks on dc-1 only |
| update.yml | dc-2 | All tasks on dc-2 only |
| update.yml | restart | Restart apigee components other than ds profile components |
| replication_factor_update.yml | cache | Update ansible cache, includes apigee specific attributes |
| replication_factor_update.yml | update | Update replication factor |
| replication_factor_update.yml | repair | Perform nodetool repair |
| replication_factor_update.yml | restart | Restart all apigee components on the node |
| replication_factor_update.yml | stop | Stop all apigee components on the node |
| replication_factor_update.yml | start | Start all apigee components on the node |
