ceph部署

初始配置

#更改主机名
hostnamectl  set-hostname node1
hostnamectl  set-hostname node2
#修改hosts文件
172.18.53.169   node1
172.18.53.179   node2

#登陆互信配置
ssh-keygen
ssh-copy-id -i /root/.ssh/id_rsa.pub root@node1
ssh-copy-id -i /root/.ssh/id_rsa.pub root@node2

#预检环节
yum install subscription-manager -y
subscription-manager repos --enable=rhel-7-server-extras-rpms
sudo yum install -y yum-utils && sudo yum-config-manager --add-repo https://dl.fedoraproject.org/pub/epel/7/x86_64/ && sudo yum install --nogpgcheck -y epel-release && sudo rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 && sudo rm /etc/yum.repos.d/dl.fedoraproject.org*

配置源

[ceph-noarch]
name=Ceph noarch packages
baseurl=http://download.ceph.com/rpm-mimic/el7/noarch
enabled=1
gpgcheck=1
type=rpm-md
gpgkey=https://download.ceph.com/keys/release.asc

#node1执行
sudo yum update -y && sudo yum install ceph-deploy -y
sudo yum install openssh-server -y

#node1、node2 
sudo yum install ntp ntpdate ntp-doc -y

#node1添加文件
~/.ssh/config

Host node1
   Hostname node1
   User root
Host node2
   Hostname node2
   User root
Host node3
   Hostname node3
   User root

#全体防火墙及安全设置
sudo firewall-cmd --zone=public --add-port=6789/tcp --permanent
sudo iptables -A INPUT -i {iface} -p tcp -s {ip-address}/{netmask} --dport 6789 -j ACCEPT
/sbin/service iptables save
sudo setenforce 0

#node1、node2
sudo yum install yum-plugin-priorities -y
sudo yum install yum-plugin-priorities --enablerepo=rhel-7-server-optional-rpms

安装

#node1
mkdir my-cluster
cd my-cluster

#卸载之前留下的数据
ceph-deploy purgedata node1  node2
ceph-deploy purge node1  node2

#创建集群
ceph-deploy new node1  node2

#添加配置文件
vim ceph.conf
[global]
fsid = 9ec20e59-1033-4505-920d-113183167b31
mon host = 172.24.49.80
osd pool default size = 2
public network = 172.24.63.0/20
auth_cluster_required = cephx
auth_service_required = cephx
auth_client_required = cephx
osd journal size = 1024
mon initial members = node-2

#安装，ceph-deploy 将在各节点安装 Ceph 
ceph-deploy install node1 node2

#出现RuntimeError: NoSectionError: No section: 'ceph'
#执行：yum  -y remove ceph-release 再出现安装

#出现[ERROR ] RuntimeError: Failed to execute command: ceph --version
#原因：安装速度过慢，已经超时了。
#解决办法：直接手动安装
#执行：yum -y install ceph ceph-radosgw

#配置初始 monitor(s)、并收集所有密钥
ceph-deploy mon create-initial
    完成上述操作后，当前目录里应该会出现这些密钥环：
    {cluster-name}.client.admin.keyring
    {cluster-name}.bootstrap-osd.keyring
    {cluster-name}.bootstrap-mds.keyring
    {cluster-name}.bootstrap-rgw.keyring

OSD配置

#创建OSD磁盘，需要用一个未初始化未挂在的盘
ceph-deploy osd create --data /dev/vdb node2

#用 ceph-deploy 把配置文件和 admin 密钥拷贝到管理节点和 Ceph 节点，这样你每次执行 Ceph 命令行时就无需指定 monitor 地址和 ceph.client.admin.keyring 了
ceph-deploy admin node1 node2

#确保你对 ceph.client.admin.keyring 有正确的操作权限
sudo chmod +r /etc/ceph/ceph.client.admin.keyring

cgr配置

#创建ceph 管理进程服务
ceph-deploy mgr create [host-name] 
如：ceph-deploy mgr create  node1

验证：

#检查集群的健康状况
ceph health
#检查ceph monitor仲裁状态
ceph quorum_status --format json-pretty

#添加 Monitors
ceph-deploy mon add node2 node3