一、ceph集群架构
二、准备工作
2.1 配置时钟同步
root@ceph-deploy:~# crontab -e
# 添加
*/5 * * * * /usr/sbin/ntpdate time1.aliyun.com &> /dev/null && hwclock -w &> /dev/null
root@ceph-deploy:~# cat /etc/hosts
# 添加
# 阿里云ntp服务器
120.25.115.20 ntpdate ntp1.aliyun.com
2.2 准备镜像仓库
涉及所有10台服务器
root@ceph-deploy:~# cat /etc/hosts # 添加 183.204.196.229 mirrors.aliyun.com root@ceph-deploy:~# cat /etc/apt/sources.list # 配置阿里云镜像源头 deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse root@ceph-deploy:~# apt update Hit:1 http://mirrors.aliyun.com/ubuntu bionic InRelease Get:2 http://mirrors.aliyun.com/ubuntu bionic-security InRelease [88.7 kB] Get:3 http://mirrors.aliyun.com/ubuntu bionic-updates InRelease [88.7 kB] Get:4 http://mirrors.aliyun.com/ubuntu bionic-proposed InRelease [242 kB] Get:5 http://mirrors.aliyun.com/ubuntu bionic-backports InRelease [74.6 kB] Get:6 http://mirrors.aliyun.com/ubuntu bionic-updates/main amd64 Packages [2,249 kB] Get:7 http://mirrors.aliyun.com/ubuntu bionic-updates/main i386 Packages [1,360 kB] Fetched 4,103 kB in 15s (275 kB/s) Reading package lists... Done Building dependency tree Reading state information... Done 159 packages can be upgraded. Run 'apt list --upgradable' to see them.2.3 创建ceph用户,并配置sudo免密
涉及10台服务器
root@ceph-deploy:~# groupadd -r -g 2022 ceph && useradd -r -m -s /bin/bash -u 2022 -g 2022 ceph && echo ceph:123456 | chpasswd root@ceph-deploy:~# echo "ceph ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers2.4 在deploy节点配置免密登陆 2.4.1 在deploy节点操作
root@ceph-deploy:~# su - ceph ceph@ceph-deploy:~$ ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/home/ceph/.ssh/id_rsa): Created directory '/home/ceph/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /home/ceph/.ssh/id_rsa. Your public key has been saved in /home/ceph/.ssh/id_rsa.pub. The key fingerprint is: SHA256:akbiDJMo4dk15ClvMeAQJ2MsX1f+t0+VvNA3ty/e5ks ceph@ceph-deploy.example.local The key's randomart image is: +---[RSA 2048]----+ |.*.o . .. | |o.* = o. | |o. + O . | |.o+.+ + . o .| |oo+..o. S . .. =+| |. =.o . . ...*| | o + . .E | | o oo.o| | .o==| +----[SHA256]——+2.4.2 将秘钥拷贝到其他服务器上
ceph@ceph-deploy:~$ ssh-copy-id ceph@192.168.2.20 /usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/ceph/.ssh/id_rsa.pub" The authenticity of host '192.168.2.20 (192.168.2.20)' can't be established. ECDSA key fingerprint is SHA256:9kHyC5k68pyboHx6VtTk2Id+y5UEBN3P0ZyM0srTZBc. Are you sure you want to continue connecting (yes/no)? yes /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys ceph@192.168.2.20's password: Number of key(s) added: 1 Now try logging into the machine, with: "ssh 'ceph@192.168.2.20'" and check to make sure that only the key(s) you wanted were added. 其他服务器也执行如下操作 ssh-copy-id ceph@192.168.2.21 ssh-copy-id ceph@192.168.2.22 ssh-copy-id ceph@192.168.2.23 ssh-copy-id ceph@192.168.2.24 ssh-copy-id ceph@192.168.2.25 ssh-copy-id ceph@192.168.2.26 ssh-copy-id ceph@192.168.2.27 ssh-copy-id ceph@192.168.2.28 ssh-copy-id ceph@192.168.2.292.5 配置主机名解析
涉及10台服务器
root@ceph-deploy:~# cat /etc/hosts # 添加 101.6.15.130 mirrors.tuna.tsinghua.edu.cn 183.204.196.229 mirrors.aliyun.com # 阿里云ntp服务器 120.25.115.20 ntpdate ntp1.aliyun.com 192.168.2.20 ceph-node1.example.local ceph-node1 192.168.2.21 ceph-node2.example.local ceph-node2 192.168.2.22 ceph-node3.example.local ceph-node3 192.168.2.23 ceph-node4.example.local ceph-node4 192.168.2.24 ceph-mgr1.example.local ceph-mgr1 192.168.2.25 ceph-mgr2.example.local ceph-mgr2 192.168.2.26 ceph-mon1.example.local ceph-mon1 192.168.2.27 ceph-mon2.example.local ceph-mon2 192.168.2.28 ceph-mon3.example.local ceph-mon3 192.168.2.29 ceph-deploy.example.local ceph-deploy
