ceph 扩容集群存储 - 添加osd

背景

ceph集群有个别单个磁盘均衡后也要超过百分之80的使用率(有一块盘超过,百分之90集群就会停止写入),现需要添加新的磁盘osd,使集群进行重新均衡数据,来达到降低个别磁盘的高使用率

操作

1.1 新添加的服务器进行安装基础的ceph源

sudo -i 
wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -ivh epel-release-latest-7.noarch.rpm

cat > /etc/yum.repos.d/ceph.repo << EOF
[Ceph]
name=Ceph packages for \$basearch
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/\$basearch
gpgcheck=0
[Ceph-noarch]
name=Ceph noarch packages
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/noarch
gpgcheck=0
[ceph-source]
name=Ceph source packages
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/SRPMS
gpgcheck=0
EOF
yum -y install ceph-common

1.2 在新服务器做一下免密(主节点ceph 要通过ssh免密操作新服务器)

mkdir -p /root/.ssh
echo "ssh-rsa   主节点免密秘钥cat .ssh/id_rsa.pub   root@ceph-master-1" >/root/.ssh/authorized_keys

2.1 主节点进入当时的ceph-deploy部署目录,进行操作

# 远程安装ceph所需包,并添加新节点
ceph-deploy install --no-adjust-repos new-ceph-1
ceph-deploy admin new-ceph-1

# 添加磁盘
ceph-deploy osd create --data  /dev/sda  new-ceph-1
posted @ 2022-09-06 11:20  鸣昊  阅读(486)  评论(0编辑  收藏  举报