Cloud Storage with Red Hat Ceph Storage
In this exercise, you navigate and query the Red Hat Ceph Storage cluster.
Outcomes
You should be able to navigate and work with services within the Ceph cluster.
As the student user on the workstation machine, use the lab command to prepare your system for this exercise.
[student@workstation ~]$ lab start intro-arch
This command confirms that the Ceph cluster in the classroom is operating.
Procedure 1.1. Instructions
Log in to the admin node,
clienta, and view Ceph services.Log in to
clientaas theadminuser and switch to therootuser.[student@workstation ~]$
ssh admin@clienta...output omitted... [admin@clienta ~]$sudo -i[root@clienta ~]#Use the
ceph orch lscommand within thecephadm shellto view the running services.[root@clienta ~]#
cephadm shell -- ceph orch lsInferring fsid 2ae6d05a-229a-11ec-925e-52540000fa0c Inferring config /var/lib/ceph/2ae6d05a-229a-11ec-925e-52540000fa0c/mon.clienta/config Using recent ceph image... NAME RUNNING REFRESHED AGE PLACEMENT alertmanager 1/1 8m ago 2d count:1 crash 4/4 8m ago 2d * grafana 1/1 8m ago 2d count:1 mgr 4/4 8m ago 2d clienta.lab.example.com;serverc.lab.example.com;serverd.lab.example.com;servere.lab.example.com mon 4/4 8m ago 2d clienta.lab.example.com;serverc.lab.example.com;serverd.lab.example.com;servere.lab.example.com node-exporter 4/4 8m ago 2d * osd.default_drive_group 9/12 8m ago 2d server* prometheus 1/1 8m ago 2d count:1 rgw.realm.zone 2/2 8m ago 2d serverc.lab.example.com;serverd.lab.example.comUse the
cephadm shellcommand to launch the shell, and then use theceph orch pscommand to view the status of all cluster daemons.[root@clienta ~]#
cephadm shell..._output omitted... [ceph: root@clienta /]#ceph orch psNAME HOST STATUS REFRESHED AGE PORTS VERSION IMAGE ID CONTAINER ID alertmanager.serverc serverc.lab.example.com running (43m) 2m ago 53m *:9093 *:9094 0.20.0 4c997545e699 95767d5df632 crash.serverc serverc.lab.example.com running (43m) 2m ago 53m - 16.2.0-117.el8cp 2142b60d7974 0f19ee9f42fa crash.serverc serverc.lab.example.com running (52m) 7m ago 52m - 16.2.0-117.el8cp 2142b60d7974 036bafc0145c crash.serverd serverd.lab.example.com running (52m) 7m ago 52m - 16.2.0-117.el8cp 2142b60d7974 2e112369ca35 crash.servere servere.lab.example.com running (51m) 2m ago 51m - 16.2.0-117.el8cp 2142b60d7974 3a2b9161c49e grafana.serverc serverc.lab.example.com running (43m) 2m ago 53m *:3000 6.7.4 09cf77100f6a ff674835c5fc mgr.serverc.lab.example.com.ccjsrd serverc.lab.example.com running (43m) 2m ago 54m *:9283 16.2.0-117.el8cp 2142b60d7974 449c4ba94638 mgr.serverc.lvsxza serverc.lab.example.com running (51m) 7m ago 51m *:8443 *:9283 16.2.0-117.el8cp 2142b60d7974 855376edd5f8 mon.serverc.lab.example.com serverc.lab.example.com running (43m) 2m ago 55m - 16.2.0-117.el8cp 2142b60d7974 3e1763669c29 mon.serverc serverc.lab.example.com running (51m) 7m ago 51m - 16.2.0-117.el8cp 2142b60d7974 d56f57a637a8 ...output omitted...
View the cluster health.
Use the
ceph healthcommand to view the health of your Ceph cluster.[ceph: root@clienta /]#
ceph healthHEALTH_OKNote
If the reported cluster status is not
HEALTH_OK, theceph health detailcommand shows further information about the cause of the health alert.Use the
ceph statuscommand to view the full cluster status.[ceph: root@clienta /]#
ceph statuscluster: id: 2ae6d05a-229a-11ec-925e-52540000fa0c health: HEALTH_OK services: mon: 4 daemons, quorum serverc.lab.example.com,clienta,serverd,servere (age 10m) mgr: serverc.lab.example.com.aiqepd(active, since 19m), standbys: clienta.nncugs, serverd.klrkci, servere.kjwyko osd: 9 osds: 9 up (since 19m), 9 in (since 2d) rgw: 2 daemons active (2 hosts, 1 zones) data: pools: 5 pools, 105 pgs objects: 221 objects, 4.9 KiB usage: 156 MiB used, 90 GiB / 90 GiB avail pgs: 105 active+clean
Explore the Ceph cluster by viewing the cluster components.
Use the
ceph mon dumpcommand to view the cluster MON map.[ceph: root@clienta /]#
ceph mon dumpepoch 4 fsid 2ae6d05a-229a-11ec-925e-52540000fa0c last_changed 2021-10-01T09:33:53.880442+0000 created 2021-10-01T09:30:30.146231+0000 min_mon_release 16 (pacific) election_strategy: 1 0: [v2:172.25.250.12:3300/0,v1:172.25.250.12:6789/0] mon.serverc.lab.example.com 1: [v2:172.25.250.10:3300/0,v1:172.25.250.10:6789/0] mon.clienta 2: [v2:172.25.250.13:3300/0,v1:172.25.250.13:6789/0] mon.serverd 3: [v2:172.25.250.14:3300/0,v1:172.25.250.14:6789/0] mon.servere dumped monmap epoch 4Use the
ceph mgr statcommand to view the cluster MGR status.[ceph: root@clienta /]#
ceph mgr stat{ "epoch": 32, "available": true, "active_name": "serverc.lab.example.com.aiqepd", "num_standby": 3 }Use the
ceph osd pool lscommand to view the cluster pools.[ceph: root@clienta /]#
ceph osd pool lsdevice_health_metrics .rgw.root default.rgw.log default.rgw.control default.rgw.metaUse the
ceph pg statcommand to view Placement Group (PG) status.[ceph: root@clienta /]#
ceph pg stat105 pgs: 105 active+clean; 4.9 KiB data, 162 MiB used, 90 GiB / 90 GiB availUse the
ceph osd statuscommand to view the status of all OSDs.[ceph: root@clienta /]#
ceph osd statusID HOST USED AVAIL WR OPS WR DATA RD OPS RD DATA STATE 0 serverc.lab.example.com 12.5M 9.98G 0 0 0 0 exists,up 1 serverc.lab.example.com 13.8M 9.98G 0 0 0 0 exists,up 2 serverc.lab.example.com 19.0M 9.97G 0 0 0 0 exists,up 3 serverd.lab.example.com 16.8M 9.97G 0 0 0 0 exists,up 4 servere.lab.example.com 23.8M 9.97G 0 0 0 0 exists,up 5 serverd.lab.example.com 24.0M 9.97G 0 0 0 0 exists,up 6 servere.lab.example.com 12.1M 9.98G 0 0 1 0 exists,up 7 serverd.lab.example.com 15.6M 9.98G 0 0 0 0 exists,up 8 servere.lab.example.com 23.7M 9.97G 0 0 0 0 exists,upUse the
ceph osd crush treecommand to view the cluster CRUSH hierarchy.[ceph: root@clienta /]#
ceph osd crush treeID CLASS WEIGHT TYPE NAME -1 0.08817 root default -3 0.02939 host serverc 0 hdd 0.00980 osd.0 1 hdd 0.00980 osd.1 2 hdd 0.00980 osd.2 -5 0.02939 host serverd 3 hdd 0.00980 osd.3 5 hdd 0.00980 osd.5 7 hdd 0.00980 osd.7 -7 0.02939 host servere 4 hdd 0.00980 osd.4 6 hdd 0.00980 osd.6 8 hdd 0.00980 osd.8Return to
workstationas thestudentuser.[ceph: root@clienta /]#
exit[root@clienta ~]#exit[admin@clienta ~]$exit[student@workstation ~]$
This concludes the guided exercise.
Red Hat Ceph Storage for OpenStack (CL260)
Haley_Ruccio
3 sie 2023
Build, expand and maintain cloud-scale, clustered storage for your applications with Red Hat Ceph StorageCloud Storage with Red Hat Ceph Storage (CL260) is designed for storage administrators and cloud operators who deploy Red Hat Ceph Storage in a production data center environment or as a component of a Red Hat OpenStack Platform or OpenShift Container Platform infrastructure. Learn how to deploy, manage, and scale a Ceph storage cluster to provide hybrid storage resources, including Amazon S3 and OpenStack Swift-compatible object storage, Ceph-native and iSCSI-based block storage, and shared file storage. This course is based on Red Hat Ceph Storage 5.0.Course summaryDeploy and manage a Red Hat Ceph Storage cluster on commodity servers.Perform common management operations using the web-based management interface.Create, expand, and control access to storage pools provided by the Ceph cluster.Access Red Hat Ceph Storage from clients using object, block, and file-based methods.Analyze and tune Red Hat Ceph Storage performance.Integrate Red Hat OpenStack Platform image, object, block, and file storage with a Red Hat Ceph Storage cluster.Integrate OpenShift Container Platform with a Red Hat Ceph Storage cluster.Target AudienceThis course is intended for storage administrators and cloud operators who want to learn how to deploy and manage Red Hat Ceph Storage on servers in an enterprise data center or within a Red Hat OpenStack Platform or OpenShift Container Platform environment.Developers writing applications that use cloud-based storage will learn the distinctions of various storage types and client access methods.Recommended trainingTake our free assessment to gauge whether this offering is the best fit for your skills.Red Hat Certified System Administrator (RHCSA) certification, or equivalent experience.For candidates that have not earned an RHCSA or equivalent, confirmation of the correct skill set knowledge can be obtained by taking the online skills assessment.Some experience with storage administration is recommended but not required.Technology considerationsThis course does not have any special technical requirements.This course is not intended for BYOD.Internet access is recommended.
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Welcome to the Red Hat Ceph Storage for OpenStack (CL260) group in the Red Hat Learning Community!
cschunke
31 lip 2023
We are excited to launch a space dedicated to the Red Hat Training course CL260! To gain the most value from this group - click the "Join Group" button in the upper right hand corner of the group home page.We encourage group members to collaborate in this group to discuss topics, ask questions, share best practices and tips, provide course feedback, and share their accomplishments as it relates to CL260.Read more about Red Hat Ceph Storage for OpenStack here.
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