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ceph-deploy比较适合生产环境,不是用cephadm搭建。相对麻烦一些,但是并不难,细节把握好就行,只是命令多一些而已。
实验环境
服务器主机public网段IP(对外服务)cluster网段IP(集群通信)角色deploy192.168.2.120用于部署集群、管理集群ceph-node1192.168.2.121192.168.6.135ceph-mon、ceph-mgr、ceph-osdceph-node2192.168.2.122192.168.6.136ceph-mon、ceph-mgr、ceph-osdceph-node3192.168.2.123192.168.6.137ceph-mon、ceph-osd- ceph-osd节点:一般建议裸金属部署。
- 10c\12c, 32G、64G更好。
- ceph-mgr两个节点就可以做高可用了,当然可以用更多节点。
- ceph-mon必须3个节点以上。
- ceph-mon性能可以低一点,比如跑虚拟机上。
- 4c8g也够用,4C16G更好。
复制代码 准备工作
关闭防火墙、关闭selinux
- systemctl disable firewalld
- systemctl stop firewalld
- setenforce 0
- sed -i '7s/enforcing/disabled/' /etc/selinux/config
复制代码 设置每台服务的hostname
- hostnamectl set-hostname ceph-node1
- hostnamectl set-hostname ceph-node2
- hostnamectl set-hostname ceph-node3
- hostnamectl set-hostname ceph-deploy
复制代码 设置host相互解析
- 192.168.2.120 ceph-deploy
- 192.168.2.121 ceph-node1
- 192.168.2.122 ceph-node2
- 192.168.2.123 ceph-node3
复制代码 每台服务器添加好epel源
- [epel]
- name=Extra Packages for Enterprise Linux 7 -
- baseurl=http://mirrors.tuna.tsinghua.edu.cn/epel/7/$basearch/
- #mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=
- failovermethod=priority
- enabled=1
- gpgcheck=1
- gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
- [epel-debuginfo]
- name=Extra Packages for Enterprise Linux 7 - - Debug
- baseurl=http://mirrors.tuna.tsinghua.edu.cn/epel/7/$basearch/debug
- #mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-debug-7&arch=
- failovermethod=priority
- enabled=0
- gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
- gpgcheck=1
- [epel-source]
- name=Extra Packages for Enterprise Linux 7 - - Source
- baseurl=http://mirrors.tuna.tsinghua.edu.cn/epel/7/SRPMS
- #mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-source-7&arch=
- failovermethod=priority
- enabled=0
- gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
- gpgcheck=1
复制代码 每台服务器添加ceph的源
- [Ceph]
- name=Ceph packages for $basearch
- baseurl=http://mirrors.tuna.tsinghua.edu.cn/ceph/rpm-mimic/el7/$basearch
- enabled=1
- gpgcheck=1
- type=rpm-md
- gpgkey=https://mirrors.tuna.tsinghua.edu.cn/ceph/keys/release.asc
- [Ceph-noarch]
- name=Ceph noarch packages
- baseurl=http://mirrors.tuna.tsinghua.edu.cn/ceph/rpm-mimic/el7/noarch
- enabled=1
- gpgcheck=1
- type=rpm-md
- gpgkey=https://mirrors.tuna.tsinghua.edu.cn/ceph/keys/release.asc
- [ceph-source]
- name=Ceph source packages
- baseurl=http://mirrors.tuna.tsinghua.edu.cn/ceph/rpm-mimic/el7/SRPMS
- enabled=1
- gpgcheck=1
- type=rpm-md
- gpgkey=https://mirrors.tuna.tsinghua.edu.cn/ceph/keys/release.asc
复制代码 每天服务器添加ceph用户
- groupadd ceph -g 3333
- useradd -u 3333 -g 3333 ceph
- echo "cephadmin888" | passwd --stdin ceph
复制代码 每台服务配置sudoer配置文件,允许ceph用户执行所有sudo命令
- echo "ceph ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
复制代码 ceph-deploy节点生产ssh密钥
- # 切换到ceph用户,切记一定要切换再做..不然免密就是免密你当前的用户,因为后续要用ceph用户来部署。
- su - ceph
- # 生成ssh密钥
- ssh-keygen
复制代码 复制ssh密钥到ceph-node1、ceph-node2、ceph-node3节点
- sudo ssh-copy-id ceph@192.168.2.121
- sudo ssh-copy-id ceph@192.168.2.122
- sudo ssh-copy-id ceph@192.168.2.123
复制代码 开始部署集群
在ceph-deploy节点创建目录
- su - ceph
- [ceph@ceph-deploy ~]$ mkdir ceph-cluster-deploy
- [ceph@ceph-deploy ~]$ cd ceph-cluster-deploy/
- [ceph@ceph-deploy ceph-cluster-deploy]$
复制代码 安装ceph-deploy包
- [ceph@ceph-deploy ceph-cluster-deploy]$ sudo yum install ceph-deploy python-setuptools python2-subprocess3
复制代码 安装成功后可以查看ceph-deploy命令是否能够使用- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy
- usage: ceph-deploy [-h] [-v | -q] [--version] [--username USERNAME]
- [--overwrite-conf] [--ceph-conf CEPH_CONF]
- COMMAND ...
复制代码 查看ceph-deploy的版本
ceph-deploy 2.0.1默认安装mimic的ceph版本(也就是13.2.10),如果需要安装其他版本ceph,可以使用--release来指定- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy --version
- 2.0.1
复制代码 执行ceph-deploy install命令初始化osd节点
在ceph-deploy节点通过执行install命令,为ceph集群中的osd节点安装ceph相关包- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy install --help
- usage: ceph-deploy install [-h] [--stable [CODENAME] | --release [CODENAME] |
- --testing | --dev [BRANCH_OR_TAG]]
- [--dev-commit [COMMIT]] [--mon] [--mgr] [--mds]
- [--rgw] [--osd] [--tests] [--cli] [--all]
- [--adjust-repos | --no-adjust-repos | --repo]
- [--local-mirror [LOCAL_MIRROR]]
- [--repo-url [REPO_URL]] [--gpg-url [GPG_URL]]
- [--nogpgcheck]
- HOST [HOST ...]
- Install Ceph packages on remote hosts.
- positional arguments:
- HOST hosts to install on
- ... 等选项,此处忽略
- # 这里有2个比较重要的选项,分别是:
- --no-adjust-repos install packages without modifying source repos # 不要去修改ceph的repo源,因为我们前面已经将源改成清华的源了,等下它给你改回来就慢的要死
- --nogpgcheck install packages without gpgcheck # 跳过gpg校验
复制代码 执行命令:- # p.s:ceph-node{1..3} 中的{1..3}这个是linux中的一个循环运算,比如用在for循环中
- # 实际上生产命令:ceph-deploy install --no-adjust-repos --nogpgcheck ceph-node1 ceph-node2 ceph-node3
- # 执行该命令进行安装
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy install --no-adjust-repos --nogpgcheck ceph-node{1..3}
复制代码 执行过程就忽略了,执行成功后有类似提示,如下:- [ceph-node3][DEBUG ] 完毕!
- [ceph-node3][INFO ] Running command: sudo ceph --version
- [ceph-node3][DEBUG ] ceph version 13.2.10 (564bdc4ae87418a232fc901524470e1a0f76d641) mimic (stable)
复制代码 执行ceph-deploy new命令执行ceph集群初始化
- # 查看ceph-deploy new子命令的帮助信息
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy new --help
- usage: ceph-deploy new [-h] [--no-ssh-copykey] [--fsid FSID]
- [--cluster-network CLUSTER_NETWORK]
- [--public-network PUBLIC_NETWORK]
- MON [MON ...]
- Start deploying a new cluster, and write a CLUSTER.conf and keyring for it.
- positional arguments:
- MON initial monitor hostname, fqdn, or hostname:fqdn pair
- optional arguments:
- -h, --help show this help message and exit
- --no-ssh-copykey do not attempt to copy SSH keys
- --fsid FSID provide an alternate FSID for ceph.conf generation
- --cluster-network CLUSTER_NETWORK
- specify the (internal) cluster network
- --public-network PUBLIC_NETWORK
- specify the public network for a cluster
复制代码 执行命令:- # 由于我是将mon也放到osd节点上,所以这里就是ceph-node1、ceph-node2、ceph-node3了
- # 生产环境,建议将mon单独服务器节点。
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy new --cluster-network 192.168.6.0/24 --public-network 192.168.2.0/24 ceph-node1 ceph-node2 ceph-node3
- [ceph_deploy.conf][DEBUG ] found configuration file at: /home/ceph/.cephdeploy.conf
- [ceph_deploy.cli][INFO ] Invoked (2.0.1): /bin/ceph-deploy new --cluster-network 192.168.6.0/24 --public-network 192.168.2.0/24 ceph-node1 ceph-node2
- [ceph_deploy.cli][INFO ] ceph-deploy options:
- [ceph_deploy.cli][INFO ] username : None
- [ceph_deploy.cli][INFO ] func : <function new at 0x7fa768c08de8>
- [ceph_deploy.cli][INFO ] verbose : False
- [ceph_deploy.cli][INFO ] overwrite_conf : False
- [ceph_deploy.cli][INFO ] quiet : False
- [ceph_deploy.cli][INFO ] cd_conf : <ceph_deploy.conf.cephdeploy.Conf instance at 0x7fa76837f8c0>
- [ceph_deploy.cli][INFO ] cluster : ceph
- [ceph_deploy.cli][INFO ] ssh_copykey : True
- [ceph_deploy.cli][INFO ] mon : ['ceph-node1', 'ceph-node2']
- [ceph_deploy.cli][INFO ] public_network : 192.168.2.0/24
- [ceph_deploy.cli][INFO ] ceph_conf : None
- [ceph_deploy.cli][INFO ] cluster_network : 192.168.6.0/24
- [ceph_deploy.cli][INFO ] default_release : False
- [ceph_deploy.cli][INFO ] fsid : None
- [ceph_deploy.new][DEBUG ] Creating new cluster named ceph
- [ceph_deploy.new][INFO ] making sure passwordless SSH succeeds
- [ceph-node1][DEBUG ] connected to host: ceph-deploy
- [ceph-node1][INFO ] Running command: ssh -CT -o BatchMode=yes ceph-node1
- [ceph-node1][DEBUG ] connection detected need for sudo
- [ceph-node1][DEBUG ] connected to host: ceph-node1
- [ceph-node1][DEBUG ] detect platform information from remote host
- [ceph-node1][DEBUG ] detect machine type
- [ceph-node1][DEBUG ] find the location of an executable
- [ceph-node1][INFO ] Running command: sudo /usr/sbin/ip link show
- [ceph-node1][INFO ] Running command: sudo /usr/sbin/ip addr show
- [ceph-node1][DEBUG ] IP addresses found: [u'192.168.2.121', u'192.168.6.135']
- [ceph_deploy.new][DEBUG ] Resolving host ceph-node1
- [ceph_deploy.new][DEBUG ] Monitor ceph-node1 at 192.168.2.121
- [ceph_deploy.new][INFO ] making sure passwordless SSH succeeds
- [ceph-node2][DEBUG ] connected to host: ceph-deploy
- [ceph-node2][INFO ] Running command: ssh -CT -o BatchMode=yes ceph-node2
- [ceph_deploy.new][WARNIN] could not connect via SSH
- [ceph_deploy.new][INFO ] will connect again with password prompt
- The authenticity of host 'ceph-node2 (192.168.2.122)' can't be established.
- ECDSA key fingerprint is SHA256:bFB9FzJjKEKMP2W5kW+orMbo9mD+tr8fLOPRsYaXhj8.
- ECDSA key fingerprint is MD5:b7:e5:bd:6a:56:10:42:3d:34:3a:54:ac:79:a2:3c:5b.
- Are you sure you want to continue connecting (yes/no)? yes
- Warning: Permanently added 'ceph-node2' (ECDSA) to the list of known hosts.
- [ceph-node2][DEBUG ] connected to host: ceph-node2
- [ceph-node2][DEBUG ] detect platform information from remote host
- [ceph-node2][DEBUG ] detect machine type
- [ceph_deploy.new][INFO ] adding public keys to authorized_keys
- [ceph-node2][DEBUG ] append contents to file
- [ceph-node2][DEBUG ] connection detected need for sudo
- [ceph-node2][DEBUG ] connected to host: ceph-node2
- [ceph-node2][DEBUG ] detect platform information from remote host
- [ceph-node2][DEBUG ] detect machine type
- [ceph-node2][DEBUG ] find the location of an executable
- [ceph-node2][INFO ] Running command: sudo /usr/sbin/ip link show
- [ceph-node2][INFO ] Running command: sudo /usr/sbin/ip addr show
- [ceph-node2][DEBUG ] IP addresses found: [u'192.168.6.136', u'192.168.2.122']
- [ceph_deploy.new][DEBUG ] Resolving host ceph-node2
- [ceph_deploy.new][DEBUG ] Monitor ceph-node2 at 192.168.2.122
- [ceph_deploy.new][DEBUG ] Monitor initial members are ['ceph-node1', 'ceph-node2']
- [ceph_deploy.new][DEBUG ] Monitor addrs are [u'192.168.2.121', u'192.168.2.122']
- [ceph_deploy.new][DEBUG ] Creating a random mon key...
- [ceph_deploy.new][DEBUG ] Writing monitor keyring to ceph.mon.keyring...
- [ceph_deploy.new][DEBUG ] Writing initial config to ceph.conf...
- # 查看当前目录,可以发现生产了一些文件
- [ceph@ceph-deploy ceph-cluster-deploy]$ ll
- 总用量 16
- -rw-rw-r-- 1 ceph ceph 292 12月 22 12:10 ceph.conf # conf是ceph集群的配置文件
- -rw-rw-r-- 1 ceph ceph 5083 12月 22 12:10 ceph-deploy-ceph.log # 日志
- -rw------- 1 ceph ceph 73 12月 22 12:10 ceph.mon.keyring # 这个是ceph集群的密钥
- # 查看ceph.conf
- [ceph@ceph-deploy ceph-cluster-deploy]$ cat ceph.conf
- [global]
- fsid = f1da3a2e-b8df-46ba-9c6b-0030da25c73e
- public_network = 192.168.2.0/24
- cluster_network = 192.168.6.0/24
- mon_initial_members = ceph-node1, ceph-node2
- mon_host = 192.168.2.121,192.168.2.122
- auth_cluster_required = cephx
- auth_service_required = cephx
- auth_client_required = cephx
复制代码 配置mon节点
安装ceph-mon包
如果是独立的mon节点,记得检查各个mon节点中是否安装了ceph-mon包初始化mon节点
切换回ceph-deploy节点- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy mon create-initial
复制代码 执行完成后回发现又多了一些配置文件,这些文件都是非常重要的,类似k8s中的kubeconfig,不要随意泄露。- [ceph@ceph-deploy ceph-cluster-deploy]$ ll
- 总用量 476
- -rw------- 1 ceph ceph 113 12月 22 13:11 ceph.bootstrap-mds.keyring
- -rw------- 1 ceph ceph 113 12月 22 13:11 ceph.bootstrap-mgr.keyring
- -rw------- 1 ceph ceph 113 12月 22 13:11 ceph.bootstrap-osd.keyring
- -rw------- 1 ceph ceph 113 12月 22 13:11 ceph.bootstrap-rgw.keyring
- -rw------- 1 ceph ceph 151 12月 22 13:11 ceph.client.admin.keyring
- -rw-rw-r-- 1 ceph ceph 292 12月 22 12:11 ceph.conf
- -rw-rw-r-- 1 ceph ceph 207826 12月 22 13:17 ceph-deploy-ceph.log
- -rw------- 1 ceph ceph 73 12月 22 12:11 ceph.mon.keyring
复制代码 而且对应的mon节点上的服务器,运行的mon服务- ceph-mon@.service
- 从此处链接:
- /etc/systemd/system/ceph-mon.target.wants/ceph-mon@<mon节点主机名>.service
复制代码 并且也有对应的进程- [root@ceph-node3 ~]# ps axu | grep non
- ceph 2614 0.5 2.1 470596 39944 ? Ssl 13:17 0:00 /usr/bin/ceph-mon -f --cluster ceph --id ceph-node3 --setuser ceph --setgroup ceph
复制代码 推送管理密钥到节点
推送密钥到各个osd节点、或者你需要使用ceph集群管理的节点。不推送你就得每次自己指定密钥,比较麻烦。。。- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy admin ceph-node{1..3}
- # 推送给自己,因为我这里是用同一个服务器来部署和管理ceph集群
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy admin ceph-deploy
复制代码 设置密钥的facl权限
在各个node节点上设置文件facl,因为推送过去的密码默认属主和属组都是root用户,但是我们前面是创建ceph用户用于管理ceph集群- # 可以在root用户下设置,也可以用sudo
- # ceph-node1
- [root@ceph-node1 ~]# setfacl -m u:ceph:rw /etc/ceph/ceph.client.admin.keyring
- [root@ceph-node1 ~]# getfacl /etc/ceph/ceph.client.admin.keyring
- getfacl: Removing leading '/' from absolute path names
- # file: etc/ceph/ceph.client.admin.keyring
- # owner: root
- # group: root
- user::rw-
- user:ceph:rw-
- group::---
- mask::rw-
- other::---
- # ceph-node2 和 ceph-node3 类似
- # 因为我打算在deploy节点同时管理ceph,也就是admin和deploy是同一个节点,所以这里也要给ddeploy节点设置facl
- [root@ceph-deploy ~]# setfacl -m u:ceph:rw /etc/ceph/ceph.client.admin.keyring
复制代码 配置mgr节点
只有ceph luminios和以上的版本才有mgr节点,老版本并没有,所以老版本不需要部署。
但是我们部署的是安装mimic的ceph版本(也就是13.2.10),所以需要部署。
安装ceph-mgr包
如果是独立的mgr节点服务器,记得检查是否安装了ceph-mgr包ceph-mgr命令选项:- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy mgr --help
- usage: ceph-deploy mgr [-h] {create} ...
- Ceph MGR daemon management
- positional arguments:
- {create}
- create Deploy Ceph MGR on remote host(s)
- optional arguments:
- -h, --help show this help message and exit
复制代码 添加mgr节点
执行命令,初始化mgr节点- # 由于我是osd、mon、mgr混用服务器,所以这里就用ceph-node1、ceph-node2了。
- ceph-deploy mgr create ceph-node1 ceph-node2
复制代码 检查ceph集群状态
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph -s
- cluster:
- id: f1da3a2e-b8df-46ba-9c6b-0030da25c73e
- health: HEALTH_WARN
- OSD count 0 < osd_pool_default_size 3
-
- services:
- mon: 3 daemons, quorum ceph-node1,ceph-node2,ceph-node3
- mgr: ceph-node1(active), standbys: ceph-node2
- osd: 0 osds: 0 up, 0 in
-
- data:
- pools: 0 pools, 0 pgs
- objects: 0 objects, 0 B
- usage: 0 B used, 0 B / 0 B avail
- pgs:
复制代码 添加osd
添加osd到集群中
- # 擦除osd节点上要被添加的磁盘的空间
- ceph-deploy disk zap ceph-node1 /dev/sd{b,c,d}
- ceph-deploy disk zap ceph-node2 /dev/sd{b,c,d}
- ceph-deploy disk zap ceph-node3 /dev/sd{b,c,d}
- # 添加ceph-node1上的磁盘为osd
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy osd create ceph-node1 --data /dev/sdb
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy osd create ceph-node1 --data /dev/sdc
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy osd create ceph-node1 --data /dev/sdd
- # 添加ceph-node2上的磁盘为osd
- ceph-deploy osd create ceph-node2 --data /dev/sdb
- ceph-deploy osd create ceph-node2 --data /dev/sdc
- ceph-deploy osd create ceph-node2 --data /dev/sdd
- # 添加ceph-node3上的磁盘为osd
- ceph-deploy osd create ceph-node3 --data /dev/sdb
- ceph-deploy osd create ceph-node3 --data /dev/sdc
- ceph-deploy osd create ceph-node3 --data /dev/sdd
- # 添加完成后,会在对应的osd节点上添加osd服务(但是只是runtime临时生效,必须将其改为永久生效)
- 如:/run/systemd/system/ceph-osd.target.wants/ceph-osd@7.service # 7是osd的id,从0开始。
复制代码 检查osd状态
- # 通过ceph-deploy可以检查
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph-deploy osd list ceph-node{1,2,3}
- # 通过ceph osd stat命令检查
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph osd stat
- 9 osds: 9 up, 9 in; epoch: e37
- # 使用 ceph osd status 查看
- - `id`: OSD的唯一标识符。
- - `host`: OSD所在的主机名
- - `used`: OSD已使用的存储容量。
- - `avail`: OSD可用的存储容量。
- - `wr ops`: OSD每秒写入操作的数量。
- - `wr data`: OSD每秒写入数据的数量。
- - `rd ops`: OSD每秒读取操作的数量。
- - `rd data`: OSD每秒读取数据的数量。
- - `state`: OSD的状态,"exists"表示OSD存在,"up"表示OSD正常运行。
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph osd status
- +----+------------+-------+-------+--------+---------+--------+---------+-----------+
- | id | host | used | avail | wr ops | wr data | rd ops | rd data | state |
- +----+------------+-------+-------+--------+---------+--------+---------+-----------+
- | 0 | ceph-node1 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 1 | ceph-node1 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 2 | ceph-node1 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 3 | ceph-node2 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 4 | ceph-node2 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 5 | ceph-node2 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 6 | ceph-node3 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 7 | ceph-node3 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- | 8 | ceph-node3 | 1028M | 4087M | 0 | 0 | 0 | 0 | exists,up |
- +----+------------+-------+-------+--------+---------+--------+---------+-----------+
- # ceph osd tree 也可以
- [root@ceph-node1 ~]# ceph osd tree
- ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
- -1 0.04408 root default
- -3 0.01469 host ceph-node1
- 0 hdd 0.00490 osd.0 up 1.00000 1.00000
- 1 hdd 0.00490 osd.1 up 1.00000 1.00000
- 2 hdd 0.00490 osd.2 up 1.00000 1.00000
- -5 0.01469 host ceph-node2
- 3 hdd 0.00490 osd.3 up 1.00000 1.00000
- 4 hdd 0.00490 osd.4 up 1.00000 1.00000
- 5 hdd 0.00490 osd.5 up 1.00000 1.00000
- -7 0.01469 host ceph-node3
- 6 hdd 0.00490 osd.6 up 1.00000 1.00000
- 7 hdd 0.00490 osd.7 up 1.00000 1.00000
- 8 hdd 0.00490 osd.8 up 1.00000 1.00000
-
- # 这个是用来查看osd的disk free,类似linux的df
- - `ID`: OSD的唯一标识符。
- - `CLASS`: OSD的存储类别。
- - `WEIGHT`: OSD的权重。
- - `REWEIGHT`: OSD的重新加权比例。
- - `SIZE`: OSD的总存储容量。
- - `RAW USE`: OSD当前使用的原始存储容量。
- - `DATA`: OSD数据存储使用量。
- - `OMAP`: OSD的OMAP(Object Map)数据存储使用量。
- - `META`: OSD元数据存储使用量。
- - `AVAIL`: OSD可用的存储容量。
- - `%USE`: OSD使用率百分比。
- - `VAR`: OSD使用率方差。
- - `PGS`: OSD分布的PG(Placement Group)数量。
- - `STATUS`: OSD的状态,"up"表示OSD正常运行。
- [root@ceph-node1 ~]# ceph osd df
- ID CLASS WEIGHT REWEIGHT SIZE USE DATA OMAP META AVAIL %USE VAR PGS
- 0 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 1 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 2 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 3 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 4 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 5 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 6 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 7 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- 8 hdd 0.00490 1.00000 5.0 GiB 1.0 GiB 4.7 MiB 0 B 1 GiB 4.0 GiB 20.11 1.00 0
- TOTAL 45 GiB 9.0 GiB 42 MiB 0 B 9 GiB 36 GiB 20.11
- MIN/MAX VAR: 1.00/1.00 STDDEV: 0
复制代码 将ceph-osd服务设置开机启动
根据osd所在节点,添加对应的服务为开机启动- # ceph-node1
- systemctl enable ceph-osd@{0,1,2}
- # ceph-node2
- systemctl enable ceph-osd@{3,4,5}
- # ceph-node3
- systemctl enable ceph-osd@{6,7,8}
复制代码 管理相关
从rados中移除osd
移除的时候,最好一个个移除,不然有可能性能跟不上,因为ceph自己去找其他osd的备份来作为主,一旦一次性删除太多就可能出现性能问题。- # 停用osd
- ceph osd out <osd-id>
- # 停止osd服务
- systemctl stop ceph-osd@<osd-id>
- # 移除osd
- ceph osd ourge <osd-id> --yes-i-really-mean-it
- # 检查ceph.conf集群配置文件中,是福哦还有对应osd的配置,如有则手动删除、
- ###### Luminous 之前的版本,移除步骤如下 :
- ceph osd crush remove <name>
- ceph auth del osd <osd-id>
- ceph osd rm <osd-id>
复制代码 手动测试数据上传、下载
- # 通过rados创建pool
- rados mkpool <pool-name> [123[ 4]] create pool <pool-name>'
- [with auid 123[and using crush rule 4]]
- # 通过ceph 命令创建pool
- ceph osd pool create <poolname> <int[0-]> {<int[0-]>} {replicated|erasure} {<erasure_code_profile>} create pool
- {<rule>} {<int>}
- ceph osd pool create <pool名> <pg值> <pg备份值>
- # 上传文件到指定的pool
- [ceph@ceph-deploy ceph-cluster-deploy]$ rados put myfile /etc/fstab -p swq-test
- # 列出指定pool中的文件
- [ceph@ceph-deploy ceph-cluster-deploy]$ rados ls -p swq-test
- myfile
- # 下载文件
- [ceph@ceph-deploy ceph-cluster-deploy]$ rados get myfile -p swq-test /tmp/my.txt
- [ceph@ceph-deploy ceph-cluster-deploy]$ cat /tmp/my.txt
- #
- # /etc/fstab
- # Created by anaconda on Thu Dec 21 23:51:13 2023
- #
- # Accessible filesystems, by reference, are maintained under '/dev/disk'
- # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
- #
- /dev/mapper/centos-root / xfs defaults 0 0
- UUID=4b1bb372-7f34-48f6-8852-036ee6dfd125 /boot
- # 查看文件的映射关系
- [ceph@ceph-deploy ceph-cluster-deploy]$ ceph osd map swq-test myfile
- osdmap e43 pool 'swq-test' (2) object 'myfile' -> pg 2.423e92f7 (2.17) -> up ([5,6,2], p5) acting ([5,6,2], p5)
- # 在哪个pg中?
- # pg为2的423e92f7中。
- # -> pg 2.423e92f7 (2.17)
- # 在哪个osd中?
- # 这里是在5,6,2这3个osd中,主osd为:5
- # acting是目前活动的osd
- # -> up ([5,6,2], p5) acting ([5,6,2], p5)
复制代码 来源:https://www.cnblogs.com/juelian/p/17921681.html
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