Ceph Quincy : Cephadm #1 クラスターの設定2022/06/15 |
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Ceph クラスター デプロイ ツール [Cephadm] を使用した Ceph クラスターの新規構築です。
当例では 3 台 のノードでクラスターを構成します。
3 台 のノードにはそれぞれ空きブロックデバイスがあることが前提です。 (当例では [/dev/sdb] を使用)
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+----------------------------+----------------------------+
| | |
|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 | | | | |
+-----------------------+ +-----------------------+ +-----------------------+
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| [1] |
[Cephadm] から各ノードの制御に Python 3 が必要となります。
よって、全ノードに、こちらの [1] を参考に Python 3 をインストールしておきます。 |
| [2] | [Cephadm] はコンテナーベースで Ceph クラスターを構築します。 よって、全ノードに Podman をインストールしておきます。 |
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[root@node01 ~]# dnf -y install podman |
| [3] | [Monitor Daemon], [Manager Daemon] を設定するノードで [Cephadm] をインストールします。 当例では [node01] で進めます。 |
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[root@node01 ~]#
[root@node01 ~]# dnf -y install centos-release-ceph-quincy epel-release
dnf -y install cephadm
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| [4] | Ceph クラスターを新規構築します。 |
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[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...
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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.
# Ceph Cli を有効にする [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) # OSD 未設定のため 現時点では [HEALTH_WARN] で OK [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:
# 各役割サービスごとにコンテナーが起動 [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 # 各コンテナー起動用の systemd サービスが起動 [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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