添加 '存储/ceph/p版本安装/5-安装cephadm.md'

存储/ceph/p版本安装/5-安装cephadm.md

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+1. 安装cephadm，O版开始就不再支持ceph-deploy工具
+> [cephadm安装](https://docs.ceph.com/en/latest/cephadm/install/#install-cephadm)
+> cephadm安装前提
+- Python3
+- Systemd
+- Podman or Docker
+- Chrony or NTP
+- LVM2
+```shell
+## 在ceph所有点上执行
+# CEPH_RELEASE=17.2.6 # replace this with the active release
+# curl --silent --remote-name --location https://download.ceph.com/rpm-${CEPH_RELEASE}/el9/noarch/cephadm
+# chmod +x cephadm
+# mv cephadm /usr/sbin/
+## 执行cephadm install 会在当前节点上安装cephadm依赖相关的软件包，版本较低，所以不建议执行
+# cephadm install
+ERROR: Distro openeuler version 22.03 not supported
+## 修改 /usr/sbin/cephadm ，在
+# vi /usr/sbin/cephadm
+## DISTRO_NAMES 这个字典中增加 openeuler
+  7654     DISTRO_NAMES = {
+  7655         'centos': ('centos', 'el'),
+  7656         'rhel': ('centos', 'el'),
+  7657         'scientific': ('centos', 'el'),
+  7658         'rocky': ('centos', 'el'),
+  7659         'openeuler': ('centos', 'el'),
+  7660         'almalinux': ('centos', 'el'),
+  7661         'ol': ('centos', 'el'),
+  7662         'fedora': ('fedora', 'fc'),
+  7663         'mariner': ('mariner', 'cm'),
+  7664     }
+  7665  
+## 将 cephadm 文件拷贝到其他节点上  
+# for i in {2..5};do scp -rp /usr/sbin/cephadm ceph0$i:/usr/sbin/;done
+```
+> 如果是Centos8，可直接yum源安装
+````shell
+# yum download cephadm
+# rpm -ivh cephadm-17.2.6-0.el8.noarch.rpm
+# rpm -ql cephadm-17.2.6-0.el8
+/usr/sbin/cephadm
+/usr/share/man/man8/cephadm.8.gz
+/var/lib/cephadm
+/var/lib/cephadm/.ssh
+/var/lib/cephadm/.ssh/authorized_keys
+````
+2. 检查ceph各节点是否满足安装ceph集群，该命令需要在当前节点执行，比如要判断ceph02是否支持安装ceph集群，则在ceph02上执行
+```shell
+# cephadm check-host --expect-hostname ceph02
+docker (/usr/bin/docker) is present
+systemctl is present
+lvcreate is present
+Unit chronyd.service is enabled and running
+Hostname "ceph02" matches what is expected.
+Host looks OK
+
+## 也可以使用以下命令检查
+# cephadm check-host --expect-hostname `hostname`
+``` 作者：itcooking https://www.bilibili.com/read/cv24307360?spm_id_from=333.999.0.0 出处：bilibili