Ceph Quincy : Cephadm #1 Configure Cluster2022/06/15 |
Configure Ceph Cluster with [Cephadm] that is a Ceph Cluster Deploy tool.
For example on here, Configure Ceph Cluster with 3 Nodes like follows.
Furthermore, each Storage Node has a free block device to use on Ceph Nodes. (use [/dev/sdb] on this example) | +----------------------------+----------------------------+ | | | |10.0.0.51 |10.0.0.52 |10.0.0.53 +-----------+-----------+ +-----------+-----------+ +-----------+-----------+ | [node01.srv.world] | | [node02.srv.world] | | [node03.srv.world] | | Object Storage +----+ Object Storage +----+ Object Storage | | Monitor Daemon | | | | | | Manager Daemon | | | | | +-----------------------+ +-----------------------+ +-----------------------+ |
[1] |
[Cephadm] uses Python 3 to configure Nodes,
so Install Python 3 on all Nodes, refer to here [1]. |
[2] | [Cephadm] deploys Container based Ceph Cluster, so Install Podman on all Nodes. |
[root@node01 ~]# dnf -y install podman |
[3] | Install [Cephadm] on a Node. (it's [node01] on this example) |
[root@node01 ~]#
[root@node01 ~]# dnf -y install centos-release-ceph-quincy epel-release
dnf -y install cephadm
|
[4] | Bootstrap new Ceph Cluster. |
[root@node01 ~]# mkdir -p /etc/ceph [root@node01 ~]# cephadm bootstrap --mon-ip 10.0.0.51 --allow-fqdn-hostname Verifying podman|docker is present... Verifying lvm2 is present... Verifying time synchronization is in place... Unit chronyd.service is enabled and running Repeating the final host check... podman (/usr/bin/podman) version 4.1.0 is present systemctl is present lvcreate is present Unit chronyd.service is enabled and running Host looks OK Cluster fsid: 5bde1018-ec3b-11ec-9cfd-5254006ea317 Verifying IP 10.0.0.51 port 3300 ... Verifying IP 10.0.0.51 port 6789 ... Mon IP `10.0.0.51` is in CIDR network `10.0.0.0/24` - internal network (--cluster-network) has not been provided, OSD replication will default to the public_network Pulling container image quay.io/ceph/ceph:v17... ..... ..... Enabling firewalld port 8443/tcp in current zone... Ceph Dashboard is now available at: URL: https://node01.srv.world:8443/ User: admin Password: h2t6k5uj20 Enabling client.admin keyring and conf on hosts with "admin" label Enabling autotune for osd_memory_target You can access the Ceph CLI with: sudo /usr/sbin/cephadm shell --fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 -c /etc/ceph/ceph.conf -k /etc/ceph/ceph.client.admin.keyring Please consider enabling telemetry to help improve Ceph: ceph telemetry on For more information see: https://docs.ceph.com/docs/master/mgr/telemetry/ Bootstrap complete. # enable Ceph Cli [root@node01 ~]# alias ceph='cephadm shell -- ceph' [root@node01 ~]# echo "alias ceph='cephadm shell -- ceph'" >> ~/.bash_profile
ceph -v Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a ceph version 17.2.0 (43e2e60a7559d3f46c9d53f1ca875fd499a1e35e) quincy (stable) # OK for [HEALTH_WARN] because OSDs are not added yet [root@node01 ~]# ceph -s Inferring fsid 5bde1018-ec3b-11ec-9cfd-5254006ea317 Using recent ceph image quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a cluster: id: 5bde1018-ec3b-11ec-9cfd-5254006ea317 health: HEALTH_WARN OSD count 0 < osd_pool_default_size 3 services: mon: 1 daemons, quorum node01.srv.world (age 5m) mgr: node01.srv.world.ujqdmo(active, since 3m) osd: 0 osds: 0 up, 0 in data: pools: 0 pools, 0 pgs objects: 0 objects, 0 B usage: 0 B used, 0 B / 0 B avail pgs: # containers are running for each service [root@node01 ~]# podman ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 41fd2e6dbb8b quay.io/ceph/ceph:v17 -n mon.node01.srv... 6 minutes ago Up 6 minutes ago ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317-mon-node01-srv-world c5f620f424ed quay.io/ceph/ceph:v17 -n mgr.node01.srv... 6 minutes ago Up 6 minutes ago ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317-mgr-node01-srv-world-ujqdmo d5c29b494578 quay.io/ceph/ceph@sha256:12a0a4f43413fd97a14a3d47a3451b2d2df50020835bb93db666209f3f77617a -n client.crash.n... 5 minutes ago Up 5 minutes ago ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317-crash-node01 a8abedebb75b quay.io/prometheus/node-exporter:v1.3.1 --no-collector.ti... 4 minutes ago Up 4 minutes ago ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317-node-exporter-node01 501a250346b8 quay.io/prometheus/prometheus:v2.33.4 --config.file=/et... 4 minutes ago Up 4 minutes ago ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317-prometheus-node01 3079863fbb8e quay.io/prometheus/alertmanager:v0.23.0 --cluster.listen-... 4 minutes ago Up 4 minutes ago ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317-alertmanager-node01 848c0c1a1750 quay.io/ceph/ceph-grafana:8.3.5 /bin/bash 4 minutes ago Up 4 minutes ago ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317-grafana-node01 # systemd service for each containers [root@node01 ~]# systemctl status ceph-* --no-pager * ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317@node-exporter.node01.service - Ceph node-exporter.node01 for 5bde1018-ec3b-11ec-9cfd-5254006ea317 Loaded: loaded (/etc/systemd/system/ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317@.service; enabled; vendor preset: disabled) Active: active (running) since Wed 2022-06-15 08:42:27 JST; 5min ago Main PID: 7199 (conmon) Tasks: 14 (limit: 100441) Memory: 42.9M CPU: 2.753s CGroup: /system.slice/system-ceph\x2d5bde1018\x2dec3b\x2d11ec\x2d9cfd\x2d5254006ea317.slice/ceph-5bde1018-ec3b-11ec-9cfd-5254006ea317@node-exporter.node01.service ..... ..... |
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