Solution: 1. Define a lifecycle policy JSON: { "Rules": [ { "ID": "DeleteOldObjects", "Status": "Enabled", "Filter": {}, "Expiration": { "Days": 30 } } ] } 2. Apply the policy to the bucket: radosgw -admin bucket lifecycle set --bucket=my -bucket --lifecycle=/path/to/policy.json Explanation: Lifecycle policies automate the management of objects in buckets by expiring or transitioning them to different storage classes. Resize an erasure -coded pool by increasing its placement groups (PGs). ee the solution below. Solution: 1. Check the current PG count: ceph osd pool get my -ec-pool pg_num 2. Increase the PG count: ceph osd pool set my -ec-pool pg_num 256 3. Verify the updated PG count: ceph osd pool get my -ec-pool pg_num Explanation:
Resizing PGs in erasure -coded pools ensures better data distribution across OSDs, improving performance and scalability. Create a restricted Ceph client with read -only access to an erasure -coded pool. ee the solution below. Solution: 1. Generate the client with restricted permissions: ceph auth get -or-create client.ec -readonly mon 'allow r' osd 'allow r pool=my -ec-pool' 2. Test the client permissions: ceph -n client.ec -readonly -k /etc/ceph/ceph.client.ec -readonly.keyring -p my -ec-pool ls Explanation: Restricted clients limit access to specific pools or operations, enhancing security and data governance in the Ceph cluster. Monitor Ceph cluster health and identify slow OSDs. ee the solution below. Solution: 1. Check the cluster health: ceph health detail 2. Identify slow OSDs in logs: ceph daemon osd.<osd_id> perf dump | grep apply_latency Explanation: Monitoring OSD performance helps identify and address bottlenecks, ensuring smooth operation of the Ceph cluster.
Rebalance the Ceph cluster after adding new OSDs to improve data distribution. ee the solution below. Solution: 1. Add the new OSDs to the cluster: ceph osd create 2. Reweight the new OSDs for rebalancing: ceph osd reweight -by-utilization 3. Verify the data rebalancing: ceph -s Explanation: Rebalancing ensures that data is evenly distributed across all OSDs, optimizing cluster performance and utilization. Configure a replicated pool with a replication size of 2 and enable compression. ee the solution below. Solution: 1. Create the replicated pool: ceph osd pool create my-replicated -pool 128 ceph osd pool set my -replicated -pool size 2 2. Enable compression: ceph osd pool set my -replicated -pool compression_algorithm zlib ceph osd pool set my-replicated -pool compression_mode aggressive 3. Verify the configuration: ceph osd pool get my -replicated -pool compression_algorithm Explanation: Compression reduces storage consumption for compressible data, providing space efficiency in the
Ceph cluster. Set up and test the Ceph RBD mirroring feature for disaster recovery. ee the solution below. Solution: 1. Enable RBD mirroring on the pool: ceph osd pool set my -pool rbd_mirroring_mode pool 2. Create a peer relationship: rbd mirror pool peer add my -pool client.admin@remote -cluster 3. Verify the mirroring status: rbd mirror pool status my -pool Explanation: RBD mirroring provides disaster recovery by replicating block devices between Ceph clusters in different locations. Configure the Ceph dashboard to monitor and alert on cluster health issues. ee the solution below. Solution: 1. Enable the dashboard: ceph mgr module enable dashboard 2. Configure email alerts: ceph dashboard set-alert-email <email@example.com> ceph dashboard set -alert-smtp <smtp -server -address> 3. Verify alert settings: ceph dashboard get -alert-email
Explanation: ee the solution below. The Ceph dashboard provides real-time monitoring and alerting for cluster health, aiding in proactive issue re solution. Migrate objects from a replicated pool to an erasure -coded pool. ee the solution below. Solution: 1. Export objects from the source pool: rados export -p replicated -pool /backup/replicated -pool.dump 2. Import objects into the erasure -coded pool: rados import -p erasure -coded -pool /backup/replicated -pool.dump 3. Verify the data in the new pool: rados -p erasure -coded -pool ls Explanation: Migrating objects to erasure -coded pools reduces storage overhead while maintaining redundancy. Enable and configure BlueStore as the default backend for all new OSDs. ee the solution below. Solution: 1. Edit the Ceph configuration file: vim /etc/ceph/ceph.conf Add: [osd] osd objectstore = bluestore
➢ TOTAL QUESTIONS: 479 Install a containerized Red Hat Ceph Storage server on a physical system using Ansible playbooks. Verify the installation. ee the solution below. Solution: 1. Install required packages: yum install ceph -ansible -y 2. Edit the Ansible inventory file (inventory.yml): [mons] node1 ansible_host=192.168.0.10 [osds] node2 ansible_host=192.168.0.11 3. Deploy the Ceph cluster: ansible -playbook -i inventory.yml site.yml 4. Verify the cluster status: ceph -s Explanation: Ansible playbooks automate the setup of a containerized Ceph Storage cluster. Verifying with ceph -s ensures the cluster is operational. Deploy a virtualized Red Hat Ceph Storage server using Podman and Ceph container images. Verify the containerized services are running. ee the solution below.
