ceph安装（ nautilus 版本 ）

2. 同步服务器时间
为了保证 ceph 集群 mon 组件通信正常，需要对每个节点的时间进行同步，这里对管理节点和 osd 节点进行时间同步，首先在所有服务器中安装 chrony 用于系统时间同步，步骤如下：

yum -y install chrony

3. 配置主机名解析

cat >> /etc/hosts << EOF
192.168.130.135 ceph-node1
192.168.130.136 ceph-node2
192.168.130.137 ceph-node3
EOF

4. 关闭防火墙和 selinux

systemctl stop firewalld.service && systemctl disable firewalld.service

5、配置源

cat >/etc/yum.repos.d/ceph.repo <<EOF
[noarch]
name=ceph-noarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/noarch/
enable=1
gpgcheck=0

[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/x86_64/
enable=1
gpgcheck=0
EOF

6、每台增加普通用户

[root@ST-K8S-01 ~]# useradd cephadmin
[root@ST-K8S-01 ~]# passwd cephadmin

在 ST-K8S-01 配置其他机器的免密登录,切换到普通用户

[cephadmin@ST-K8S-01 ~]$ ssh-keygen
[cephadmin@ST-K8S-01 ~]$ ssh-copy-id cephadmin@10.2.57.3
[cephadmin@ST-K8S-01 ~]$ ssh-copy-id cephadmin@10.2.57.4
[cephadmin@ST-K8S-01 ~]$ ssh-copy-id cephadmin@10.2.57.5

配置 cephadmin 免密 sudo

echo "cephadmin ALL = (root) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/cephadmin
sudo chmod 0440 /etc/sudoers.d/cephadmin

二、安装

####如果有就清理
ceph-deploy purge ST-K8S-01 ST-K8S-02 ST-K8S-03
ceph-deploy purgedata ST-K8S-01 ST-K8S-02 ST-K8S-03
ceph-deploy forgetkeys

所有节点安装

yum install -y ceph ceph-radosgw

在admin上安装

[cephadmin@ST-K8S-01 ~]$ sudo yum install -y ceph-deploy
[cephadmin@ST-K8S-01 ~]$ mkdir /data/ceph-cluster
[cephadmin@ST-K8S-01 ~]$ cd /data/ceph-cluster/
[cephadmin@ST-K8S-01 ceph-cluster]$ ceph-deploy new --public-network 10.2.57.0/24 --cluster-network 10.2.57.0/24 ST-K8S-01 ST-K8S-02 ST-K8S-03
[cephadmin@ST-K8S-01 ceph-cluster]$ cat ceph.conf
[global]
fsid = aca2b777-962a-4f7b-8663-20e0c1e30bc4
ms_bind_ipv6 = true
mon_initial_members = ST-K8S-01, ST-K8S-02, ST-K8S-03
mon_host = 10.2.57.3,10.2.57.4,10.2.57.5
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
public_network = 10.2.57.0/24
cluster_network = 10.2.57.0/24
osd pool default size = 2
[cephadmin@ST-K8S-01 ceph-cluster]$ ceph-deploy --overwrite-conf mon create-initial

.将配置文件同步到各节点

[cephadmin@ST-K8S-01 ceph-cluster]$ ceph-deploy --overwrite-conf config push ST-K8S-01 ST-K8S-02 ST-K8S-03

确保你对 ceph.client.admin.keyring 有正确的操作权限

sudo cp ceph.client.admin.keyring /etc/ceph/
sudo chmod +r /etc/ceph/ceph.client.admin.keyring

添加osd

[cephadmin@ST-K8S-01 ceph-cluster]$ ceph-deploy osd create ST-K8S-01 --data /dev/sdc
[cephadmin@ST-K8S-01 ceph-cluster]$ ceph-deploy osd create ST-K8S-02 --data /dev/sdc
[cephadmin@ST-K8S-01 ceph-cluster]$ ceph-deploy osd create ST-K8S-03 --data /dev/sdc

创建管理节点

[cephadmin@ST-K8S-01 ceph-cluster]$ ceph-deploy mgr create ST-K8S-01 ST-K8S-02 ST-K8S-03