Kubernetes存储——ceph(集群)

一、搭建ceph(集群)版本:rpm-nautilus

1.1 服务器规划

master(k8s集群) node1(k8s集群) node2(k8s集群)
192.168.99.201 192.168.99.202 192.168.99.203
ceph-01(ceph集群) ceph-02(ceph集群) ceph-03(ceph集群) ceph-client(ceph集群)
192.168.99.204 192.168.99.205 192.168.99.206 192.168.99.207

所有ceph服务器另外准备一块磁盘(裸盘)(/dev/sdb)

添加新磁盘
这里在所有节点添加1块50GB的新磁盘:/dev/sdb,作为OSD盘,提供存储空间,添加完成后扫描磁盘,确保主机能够正常识别到:

#扫描 SCSI 总线并添加 SCSI 设备
# for host in $(ls /sys/class/scsi_host) ; do echo "- - -" > /sys/class/scsi_host/$host/scan; done

#重新扫描 SCSI 总线
# for scsi_device in $(ls /sys/class/scsi_device/); do echo 1 > /sys/class/scsi_device/$scsi_device/device/rescan; done

#查看已添加的磁盘,能够看到sdb说明添加成功
lsblk

1.2 环境准备

所有 ceph (服务端 + 客户端) 添加 yum 源 (rpm-nautilus版本) (ceph version 14.2.22)

$ cat > /etc/yum.repos.d/ceph.repo << EOF
[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/x86_64/
enabled=1
gpgcheck=0
priority=1

[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/noarch/
enabled=1
gpgcheck=0
priority=1

[ceph-source]
name=Ceph source packages
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/SRPMS
enabled=1
gpgcheck=0
priority=1
EOF
[root@ceph-01 /etc/ceph]# ssh-keygen

$ for i in 192.168.99.{201..207}; do echo ">>> $i";ssh-copy-id $i;done

$ for i in ceph-{01..03}; do echo ">>> $i";ssh-copy-id $i;done
[root@ceph-01 /etc/ceph]# yum -y install ceph-deploy python-setuptools

[root@ceph-01 /etc/ceph]# ceph-deploy --version 
[root@ceph-01 /etc/ceph]# mkdir /etc/ceph && cd /etc/ceph

[root@ceph-01 /etc/ceph]# ceph-deploy new ceph-01
[root@ceph-01 /etc/ceph]# ls
ceph.conf  ceph-deploy-ceph.log  ceph.mon.keyring
[root@ceph-01 /etc/ceph]# yum -y install ceph ceph-radosgw
[root@ceph-01 /etc/ceph]# ceph -v

[root@ceph-02 ~]# yum -y install ceph ceph-radosgw
[root@ceph-02 ~]# ceph -v

[root@ceph-03 ~]# yum -y install ceph ceph-radosgw
[root@ceph-03 ~]# ceph -v

上面操作也可以用下面的命令执行
$ ceph-deploy install ceph-01 ceph-02 ceph-03
[root@ceph-01 /etc/ceph]# echo public network = 192.168.99.0/24 >> /etc/ceph/ceph.conf

监控节点初始化,并将配置文件同步到所有节点

[root@ceph-01 /etc/ceph]# ceph-deploy mon create-initial

[root@ceph-01 /etc/ceph]# ps -ef | grep ceph-mon

[root@ceph-01 /etc/ceph]# ceph health
HEALTH_WARN mon is allowing insecure global_id reclaim

[root@ceph-01 /etc/ceph]# ceph-deploy admin ceph-01 ceph-02 ceph-03
[root@ceph-01 /etc/ceph]# ceph -s

禁用不安全模式:mon is allowing insecure global_id reclaim

[root@ceph-01 /etc/ceph]# ceph config set mon auth_allow_insecure_global_id_reclaim false

[root@ceph-01 /etc/ceph]# ceph health
[root@ceph-01 /etc/ceph]# ceph -s

为了防止mon单点故障,你可以加多个mon节点(建议奇数个,因为有quorum仲裁投票)

[root@ceph-01 /etc/ceph]# ceph-deploy mon add ceph-02
[root@ceph-01 /etc/ceph]# ceph-deploy mon add ceph-03
[root@ceph-01 /etc/ceph]# ceph -s

查看mon各种状态

#查看 mon 状态信息
[root@ceph-01 /etc/ceph]# ceph mon stat 
#查看 mon 的选举状态
[root@ceph-01 /etc/ceph]# ceph quorum_status
#查看 mon 映射信息
[root@ceph-01 /etc/ceph]# ceph mon dump
#查看 mon 详细状态
[root@ceph-01 /etc/ceph]# ceph daemon mon.ceph-01 mon_status

创建 mgr (管理)

# 创建一个mgr
[root@ceph-01 /etc/ceph]# ceph-deploy mgr create ceph-01
[root@ceph-01 /etc/ceph]# ceph -s

# 添加多个mgr可以实现HA
[root@ceph-01 /etc/ceph]# ceph-deploy mgr create ceph-02
[root@ceph-01 /etc/ceph]# ceph-deploy mgr create ceph-03
[root@ceph-01 /etc/ceph]# ceph -s

创建 osd (存储盘)

[root@ceph-01 /etc/ceph]# ceph-deploy disk --help
[root@ceph-01 /etc/ceph]# ceph-deploy osd --help

[root@ceph-01 /etc/ceph]# ceph-deploy disk list ceph-01
[root@ceph-01 /etc/ceph]# ceph-deploy disk list ceph-02
[root@ceph-01 /etc/ceph]# ceph-deploy disk list ceph-03
[root@ceph-01 /etc/ceph]# ceph-deploy disk zap ceph-01 /dev/sdb
[root@ceph-01 /etc/ceph]# ceph-deploy disk zap ceph-02 /dev/sdb
[root@ceph-01 /etc/ceph]# ceph-deploy disk zap ceph-03 /dev/sdb

[root@ceph-01 /etc/ceph]# ceph-deploy osd create --data /dev/sdb ceph-01
[root@ceph-01 /etc/ceph]# ceph-deploy osd create --data /dev/sdb ceph-02
[root@ceph-01 /etc/ceph]# ceph-deploy osd create --data /dev/sdb ceph-03

[root@server01 ceph]# ceph -s

查看 ceph osd 各种状态

#查看 osd 运行状态
[root@ceph-01 /etc/ceph]# ceph osd stat
#查看 osd 映射信息
[root@ceph-01 /etc/ceph]# ceph osd dump
#查看数据延迟
[root@ceph-01 /etc/ceph]# ceph osd perf
#详细列出集群每块磁盘的使用情况
[root@ceph-01 /etc/ceph]# ceph osd df
#查看 osd 目录树
[root@ceph-01 /etc/ceph]# ceph osd tree
#查看最大 osd 的个数
[root@ceph-01 /etc/ceph]# ceph osd getmaxosd

时间导致的集群不健康,排错方法:

[root@ceph-01 /etc/ceph]# ceph -s
  cluster:
    id:     74cbea9d-a4a0-4efc-a267-38a595bb2174
    health: HEALTH_WARN
            clock skew detected on mon.ceph-02
1、ntpd
root@ceph-02 ~]# systemctl restart ntpd
root@ceph-02 ~]# systemctl restart ntpd
操作节点上重启ceph-mon.target服务
[root@ceph-01 /etc/ceph]# systemctl restart ceph-mon.target

2、chronyd
root@ceph-02 ~]# systemctl restart chronyd
root@ceph-02 ~]# systemctl restart chronyd
操作节点上重启ceph-mon.target服务
[root@ceph-01 /etc/ceph]# systemctl restart ceph-mon.target

3、在global配置段里加上下面两句(调整时间偏差阈值)
cat >> /etc/ceph/ceph.conf << EOF
mon clock drift allowed = 2
mon clock drift warn backoff = 30
EOF
再把修改的配置同步到所有节点(前面同步过配置文件,所以这次命令有点不同,这是同步覆盖过去)
[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03
再回到ceph-01操作节点上重启ceph-mon.target服务
[root@ceph-01 /etc/ceph]# systemctl restart ceph-mon.target

在ceph.conf上添加删除pool的配置参数

# 在[global]配置下加上这一句
[root@ceph-01 /etc/ceph]# echo mon_allow_pool_delete = true >> /etc/ceph/ceph.conf

[root@ceph-01 /etc/ceph]# echo mon_max_pg_per_osd = 2000 >> /etc/ceph/ceph.conf

# 添加如上设置后,把ceph.conf同步到所有mon节点
[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03

# 重启监控服务,给所有的mon节点重启服务
[root@ceph-01 /etc/ceph]# systemctl restart ceph-mon.target
[root@ceph-02 ~]# systemctl restart ceph-mon.target
[root@ceph-03 ~]# systemctl restart ceph-mon.target
[root@ceph-0n ~]# systemctl status ceph-mon.target

# 删除时pool名输两次,后再接--yes-i-really-really-mean-it参数就可以删除了
[root@ceph-01 /etc/ceph]# ceph osd pool delete test_pool test_pool --yes-i-really-reallymean-it
or
[root@ceph-01 /etc/ceph]# rados rmpool test_pool test_pool --yes-i-really-really-mean-it

1.3 ceph 文件存储

1.3.1 创建文件存储

第一步:在ceph-01部署节点上同步配置文件,并创建mds

先同步一下配置文件,(因为前面在 ceph-01 的配置文件里加了 mon_allow_pool_delete = true 所以要同步后,才能成功执行下一条命令)
[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03

#这里做三个mds
[root@ceph-01 /etc/ceph]# ceph-deploy mds create ceph-01 ceph-02 ceph-03

[root@ceph-01 /etc/ceph]# ceph -s

第2步: 一个Ceph文件系统需要至少两个RADOS存储池,一个用于数据,一个用于元数据。

[root@ceph-01 /etc/ceph]# ceph osd pool create cephfs_pool 128
pool 'cephfs_pool' created
[root@ceph-01 /etc/ceph]# ceph osd pool create cephfs_metadata 64
pool 'cephfs_metadata' created
[root@ceph-01 /etc/ceph]# ceph osd pool ls |grep cephfs
cephfs_pool
cephfs_metadata

第3步: 创建Ceph文件系统,并确认客户端访问的节点

[root@ceph-01 /etc/ceph]# ceph fs new cephfs cephfs_metadata cephfs_pool
new fs with metadata pool 2 and data pool 1
[root@ceph-01 /etc/ceph]# ceph fs ls
name: cephfs, metadata pool: cephfs_metadata, data pools: [cephfs_pool ]
[root@ceph-01 /etc/ceph]# ceph mds stat
cephfs:1 {0=ceph-01=up:active} 2 up:standby #ceph-01为up状态

第4步: 在ceph-01(上面查看是ceph-01为up状态)上创建客户端挂载需要的验证key文件,并传给客户端 ceph默认启用了cephx认证,要求客户端的挂载必须要用户名和密码验证

使用ceph-authtool验证工具产生密码key文件
[root@ceph-01 /etc/ceph]# ceph-authtool -p /etc/ceph/ceph.client.admin.keyring > /etc/ceph/admin.key

拷贝给客户端
[root@ceph-01 /etc/ceph]# scp admin.key ceph-client:/root

第5步: 部署client节点

[root@ceph-01 /etc/ceph]# ssh-copy-id -i ceph-client

[root@ceph-01 /etc/ceph]# ceph-deploy install ceph-client

[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03 ceph-client
#请确认上述命令是否有效

第6步: 在客户端安装ceph-fuse,并使用ceph-01产生的key文件进行挂载

[root@ceph-client ~]# yum install ceph-fuse -y

下面命令为挂载命令,192.168.99.204为ceph-01的IP; /root/admin.key为密码key文件
[root@ceph-client ~]# mount -t ceph 192.168.99.204:6789:/ /mnt -o name=admin,secretfile=/root/admin.key

[root@ceph-client ~]# df -h |tail -1
192.168.99.204:6789:/      47G     0   47G   0% /mnt

第7步: 在客户端读写测试

[root@ceph-client ~]# echo haha > /mnt/123.txt
[root@ceph-client ~]# cat /mnt/123.txt
haha

练习: 请自行再加一个客户端挂载(也可以直接使用ceph-03模拟客户端),测试两个客户端是否能实现同读同写?

[root@ceph-01 /etc/ceph]# scp /etc/ceph/admin.key ceph-03:/root

[root@ceph-03 ~]# mount -t ceph 192.168.99.204:6789:/ /mnt -o name=admin,secretfile=/root/admin.key

[root@ceph-03 ~]# df -h |tail -1
192.168.99.204:6789:/      47G     0   47G   0% /mnt

两个客户端读写测试:可以实现同读同写

1.3.2 删除文件存储

第1步: 在客户端上删除数据,并umount所有挂载

[root@ceph-client ~]# rm /mnt/* -rf
[root@ceph-client ~]# umount /mnt/
[root@ceph-03 ~]# umount /mnt/

第2步: 停掉所有节点的mds(只有停掉mds才能删除文件存储)

[root@ceph-01 /etc/ceph]# systemctl stop ceph-mds.target
[root@ceph-02 ~]# systemctl stop ceph-mds.target
[root@ceph-03 ~]# systemctl stop ceph-mds.target

第3步: 回到OSD存储端删除

[root@ceph-01 /etc/ceph]# ceph fs rm cephfs --yes-i-really-mean-it

[root@ceph-01 /etc/ceph]# ceph osd pool delete cephfs_metadata cephfs_metadata --yes-i-really-really-mean-it
pool 'cephfs_metadata' removed

[root@ceph-01 /etc/ceph]# ceph osd pool delete cephfs_pool cephfs_pool --yes-i-really-really-mean-it
pool 'cephfs_pool' removed

第4步: 可以将mds服务再次启动(可选项,如果以后还要用文件存储就需要启动)

[root@ceph-01 /etc/ceph]# systemctl start ceph-mds.target
[root@ceph-02 ~]# systemctl start ceph-mds.target
[root@ceph-03 ~]# systemctl start ceph-mds.target
[root@ceph-0n ~]# systemctl status ceph-mds.target

1.4 ceph 块存储

1.4.1 创建块存储

第1步: 在ceph-01部署节点上同步文件到所有节点(包括client)

[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03 ceph-client

第2步:建立存储池,并初始化

[root@ceph-client ~]# ceph osd pool create rbd_pool 128
pool 'rbd_pool' created

[root@ceph-client ~]# rbd pool init rbd_pool

第3步:创建一个存储卷(这里卷名为volume1,大小为500M)

[root@ceph-client ~]# rbd create volume1 --pool rbd_pool --size 500
[root@ceph-client ~]# rbd ls rbd_pool
volume1
[root@ceph-client ~]# rbd info volume1 -p rbd_pool

第4步: 将创建的卷映射成块设备

# 因为rbd镜像的一些特性,OS kernel并不支持,所以映射报错
[root@ceph-client /etc/ceph]# rbd map rbd_pool/volume1

# 解决方法:
# disable掉相关特性
[root@ceph-client ~]# rbd feature disable rbd_pool/volume1 object-map fast-diff deep-flatten

# 再次映射
[root@client ~]# rbd map rbd_pool/volume1
/dev/rbd0

# 查看映射(如果要取消映射,可以使用rbd unmap /dev/rbd0)
[root@ceph-client ~]# rbd showmapped
id pool     namespace image   snap device
0  rbd_pool           volume1 -    /dev/rbd0

第5步: 块存储使用

[root@ceph-client ~]# lsblk
[root@ceph-client ~]# mkfs.xfs /dev/rbd0
[root@ceph-client ~]# mount /dev/rbd0 /mnt/
[root@ceph-client ~]# df -h |tail -1
/dev/rbd0                498M   26M  473M   6% /mnt

[root@ceph-client ~]# echo yyds > /mnt/456.txt
[root@ceph-client ~]# cat /mnt/456.txt
yyds
1.4.2 块存储扩容与裁减
  • 在线扩容
# 500M扩容成800M
[root@ceph-client ~]# rbd resize --size 800 rbd_pool/volume1
Resizing image: 100% complete...done.

[root@ceph-client ~]# rbd info rbd_pool/volume1 |grep size
        size 800 MiB in 200 objects

# 查看大小,并没有变化
[root@ceph-client ~]# df -h |tail -1
/dev/rbd0                498M   26M  473M   6% /mnt

[root@ceph-client ~]# xfs_growfs -d /mnt/

# 再次查看大小,在线扩容成功
[root@ceph-client ~]# df -h |tail -1
/dev/rbd0                798M   26M  772M   4% /mnt
  • 块存储裁减

不能在线裁减.裁减后需重新格式化再挂载,所以请提前备份好数据

# 再裁减回500M
[root@ceph-client ~]# rbd resize --size 500 rbd_pool/volume1 --allow-shrink
Resizing image: 100% complete...done.

# 重新格式化挂载
[root@ceph-client ~]# umount /mnt/
[root@ceph-client ~]# mkfs.xfs -f /dev/rbd0
[root@ceph-client ~]# mount /dev/rbd0 /mnt/

# 再次查看,确认裁减成功
[root@ceph-client ~]# df -h |tail -1
/dev/rbd0                498M   26M  473M   6% /mnt
1.4.3 删除块存储
[root@ceph-client ~]# umount /mnt/
[root@ceph-client ~]# rbd unmap /dev/rbd0
[root@ceph-client ~]# ceph osd pool delete rbd_pool rbd_pool --yes-i-really-really-mean-it
pool 'rbd_pool' removed

1.5 ceph 对象存储

1.5.1 测试 ceph 对象网关的连接

第1步: 在ceph-01上创建 rgw (对象存储网关)

[root@ceph-01 /etc/ceph]# yum install -y ceph-radosgw   # 此步开始已经部署过
[root@ceph-01 /etc/ceph]# ceph-deploy rgw create ceph-01

[root@ceph-01 /etc/ceph]# lsof -i :7480
COMMAND  PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
radosgw 5925 ceph   46u  IPv4  28670      0t0  TCP *:7480 (LISTEN)
radosgw 5925 ceph   47u  IPv6  28672      0t0  TCP *:7480 (LISTEN)

http://192.168.99.204:7480

2021-10-07_171413

第2步: 在客户端测试连接对象网关

# 创建一个测试用户
[root@ceph-client ~]# radosgw-admin user list
[]

[root@ceph-client ~]# radosgw-admin user create --uid="testuser" --display-name="First User"

{
    "user_id": "testuser",
    "display_name": "First User",
    "email": "",
    "suspended": 0,
    "max_buckets": 1000,
    "subusers": [],
    "keys": [
        {
            "user": "testuser",
            "access_key": "4O1OMS47IK0196FE4LP1",
            "secret_key": "TQgfHVNigeYcqjzA6tKTShczFHzMVIAaAe9bzqAa"
        }
    ],
    "swift_keys": [],
    "caps": [],
    "op_mask": "read, write, delete",
    "default_placement": "",
    "default_storage_class": "",
    "placement_tags": [],
    "bucket_quota": {
        "enabled": false,
        "check_on_raw": false,
        "max_size": -1,
        "max_size_kb": 0,
        "max_objects": -1
    },
    "user_quota": {
        "enabled": false,
        "check_on_raw": false,
        "max_size": -1,
        "max_size_kb": 0,
        "max_objects": -1
    },
    "temp_url_keys": [],
    "type": "rgw",
    "mfa_ids": []
}

[root@ceph-client ~]# radosgw-admin user list                                            [
    "testuser"
]

# 记下输出的access_key 和 secret_key的值
# 如果没有记下也可以通过以下命令查看
$ radosgw-admin user info --uid=testuser
  • 安装python测试工具
[root@ceph-client ~]# yum install python-boto -y
  • 编写一个python程序测试
$ cat > s3_test.py <<EOF
import boto
import boto.s3.connection

access_key = ''
secret_key = ''

conn = boto.connect_s3(
        aws_access_key_id = access_key,
        aws_secret_access_key = secret_key,
        host = 'ceph-01', port = 7480,
        is_secure=False, calling_format = boto.s3.connection.OrdinaryCallingFormat(),
        )

bucket = conn.create_bucket('my-new-bucket')
for bucket in conn.get_all_buckets():
        print "{name}".format(
                name = bucket.name,
                created = bucket.creation_date,
)
EOF

[root@ceph-client ~]# vim s3_test.py
import boto
import boto.s3.connection

access_key = '4O1OMS47IK0196FE4LP1'   # 这两个key和上面创建用户时的信息对应
secret_key = 'TQgfHVNigeYcqjzA6tKTShczFHzMVIAaAe9bzqAa'

conn = boto.connect_s3(
        aws_access_key_id = access_key,
        aws_secret_access_key = secret_key,
        host = 'ceph-01', port = 7480,   # ceph-client要能解析ceph-01,或者换成ceph-01的ip
        is_secure=False, calling_format = boto.s3.connection.OrdinaryCallingFormat(),
        )

bucket = conn.create_bucket('my-new-bucket')
for bucket in conn.get_all_buckets():
        print "{name}".format(
                name = bucket.name,
                created = bucket.creation_date,
)

# 测试成功
[root@ceph-client ~]# python s3_test.py
my-new-bucket
1.5.2 S3连接ceph对象网关

AmazonS3是一种面向Internet的对象存储服务.我们这里可以使用s3工具连接ceph的对象存储进行操作

第1步: 客户端安装s3cmd工具,并编写ceph连接配置文件

[root@ceph-client ~]# yum install s3cmd -y

# 创建并编写下面的文件,key文件对应前面创建测试用户的key
[root@ceph-client ~]# vim /root/.s3cfg
[default]
access_key = 4O1OMS47IK0196FE4LP1
secret_key = TQgfHVNigeYcqjzA6tKTShczFHzMVIAaAe9bzqAa
host_base = 192.168.99.204:7480
host_bucket = 192.168.99.204:7480/%(bucket)
cloudfront_host = 192.168.99.204:7480
use_https = False

第2步: 命令测试

# 列出bucket,可以查看到先前测试创建的my-new-bucket
[root@ceph-client ~]# s3cmd ls
2021-07-11 19:41  s3://my-new-bucket

# 再建一个桶
[root@ceph-client ~]# s3cmd mb s3://test_bucket
Bucket 's3://test_bucket/' created

# 上传文件到桶
[root@ceph-client ~]# s3cmd put /etc/fstab s3://test_bucket
upload: '/etc/fstab' -> 's3://test_bucket/fstab'  [1 of 1]
 541 of 541   100% in    1s   350.03 B/s  done
 
# 下载到当前目录
[root@ceph-client ~]# s3cmd get s3://test_bucket/fstab
download: 's3://test_bucket/fstab' -> './fstab'  [1 of 1]
 541 of 541   100% in    0s    11.03 KB/s  done

# 更多命令请见参考命令帮助
[root@ceph-client ~]# s3cmd --help

1.6 ceph dashboard

ceph 提供了原生的 Dashboard 功能,通过 ceph dashboard 完成对 ceph 存储系统可视化监视

**(nautilus版) 需要安装 ceph-mgr-dashboard **

1、在每个 mgr节点安装

$ yum install ceph-mgr-dashboard -y
$ ceph mgr versions
$ ps -ef | grep ceph-mgr
$ ceph -s

2、查看 mgr module帮助及模块信息

$ ceph mgr module --help
$ ceph mgr module ls | head -20

3、开启 mgr功能、开启dashboard模块

$ ceph mgr module enable dashboard
$ ceph mgr module ls | head -20

4、创建自签名证书

默认情况下,仪表板的所有HTTP连接均使用SSL/TLS进行保护

要快速启动并运行仪表板,可以使用以下内置命令生成并安装自签名证书

[root@ceph-01 /etc/ceph]# ceph dashboard create-self-signed-cert
Self-signed certificate created

5、创建新的访问控制角色 、创建具有管理员角色的用户

设置用户跟密码

[root@ceph-01 /etc/ceph]# echo admin123 > /root/ceph-password.txt

# 创建用户admin,密码指定ceph-password.txt文件,用administrator角色
[root@ceph-01 /etc/ceph]# ceph dashboard ac-user-create admin -i /root/ceph-password.txt administrator
{"username": "admin", "lastUpdate": 1626079263, "name": null, "roles": ["administrator"], "password": "$2b$12$zlN6AOugMKWqn4l680QEje8.Ny12XT7WHoBN4oeEceLLndjR.xlRi", "email": null}

# 显示用户信息
[root@ceph-01 /etc/ceph]# ceph dashboard ac-user-show
["admin"]

# 显示角色信息
[root@ceph-01 /etc/ceph]# ceph dashboard ac-role-show
["administrator", "pool-manager", "cephfs-manager", "cluster-manager", "block-manager", "read-only", "rgw-manager", "ganesha-manager"]

# 删除用户命令
[root@ceph-01 /etc/ceph]# ceph dashboard ac-user-delete admin
User 'admin' deleted
[root@ceph-01 /etc/ceph]# ceph dashboard ac-user-show
[]

# 更多命令请见参考命令帮助
[root@ceph-01 /etc/ceph]# ceph dashboard -h

6、在 ceph active mgr节点上配置 mgr services

主要配置 dashboard 使用的IP及Port

#查看到ceph active mgr节点是ceph-01
[root@ceph-01 /etc/ceph]# ceph -s |grep mgr
    mgr: ceph-01(active, since 44m), standbys: ceph-02, ceph-03

#查看默认的ceph-mgr服务
[root@ceph-01 /etc/ceph]# ceph mgr services
{
    "dashboard": "https://ceph-01:8443/"
}

此时可以直接使用默认的service访问ceph-dashboard的web页面

https://ceph-01:8443/ or https://192.168.99.204:8443/

输入账号密码登录(admin、admin123)

如果是虚拟机,用域名访问需要解析!!!

在C:\Windows\System32\drivers\etc\hosts文件里添加192.168.99.204 ceph-01

  • 自定义监听ip及端口
#可修改为
[root@ceph-01 /etc/ceph]# ceph config set mgr mgr/dashboard/server_addr 192.168.99.204

[root@ceph-01 /etc/ceph]# ceph config set mgr mgr/dashboard/server_port 8080

#修改后查看没有变化,需要重启dashboard
[root@ceph-01 /etc/ceph]# ceph mgr services
{
"dashboard": "https://ceph-01:8443/"
}

# 使用配置生效
[root@ceph-01 /etc/ceph]# ceph mgr module disable dashboard
[root@ceph-01 /etc/ceph]# ceph mgr module enable dashboard
[root@ceph-01 /etc/ceph]# ceph mgr services
{
"dashboard": "https://192.168.99.204:8080/"
}

禁用ssl

直接用http,如果想要用https的话,不需要操作这一步

[root@ceph-01 /etc/ceph]# ceph config ls |grep mgr/dashboard/ssl
mgr/dashboard/ssl

[root@ceph-01 /etc/ceph]# ceph config set mgr mgr/dashboard/ssl false

dashboard 启用 RGW ,开启 Object Gateway 管理功能

Ceph Dashboard默认安装好后,没有启用rgw,需要手动启用RGW

部署 rgw

# 全部节点安装,达到高可用
$ yum install ceph-radosgw -y #开始已经部署过
$ ceph -s

[root@ceph-01 /etc/ceph]# ceph-deploy rgw create ceph-01 ceph-02 ceph-03

创建 rgw 系统账户

[root@ceph-01 /etc/ceph]# radosgw-admin user list                   [
    "testuser"
]

[root@ceph-01 /etc/ceph]# radosgw-admin user create --uid=rgw --display-name=rgw  --system 

{
    "user_id": "rgw",
    "display_name": "rgw",
    "email": "",
    "suspended": 0,
    "max_buckets": 1000,
    "subusers": [],
    "keys": [
        {
            "user": "rgw",
            "access_key": "QNJI1APRKX691UJ2R9B3",
            "secret_key": "u5g1JtnCotNjE1H9MMerLc7QefW8xK8PLiw7ZGUs"
        }
    ],
    "swift_keys": [],
    "caps": [],
    "op_mask": "read, write, delete",
    "system": "true",
    "default_placement": "",
    "default_storage_class": "",
    "placement_tags": [],
    "bucket_quota": {
        "enabled": false,
        "check_on_raw": false,
        "max_size": -1,
        "max_size_kb": 0,
        "max_objects": -1
    },
    "user_quota": {
        "enabled": false,
        "check_on_raw": false,
        "max_size": -1,
        "max_size_kb": 0,
        "max_objects": -1
    },
    "temp_url_keys": [],
    "type": "rgw",
    "mfa_ids": []
}

[root@ceph-01 /etc/ceph]# radosgw-admin user list
[
    "rgw",
    "testuser"
]

# 记下输出的access_key 和 secret_key的值
# 如果没有记下也可以通过以下命令查看
$ radosgw-admin user info --uid=rgw

设置access_key 和 secret_key

# 写入access_key的值
[root@ceph-01 /etc/ceph]# echo QNJI1APRKX691UJ2R9B3 > access_key 

# 写入secret_key的值
[root@ceph-01 /etc/ceph]# echo u5g1JtnCotNjE1H9MMerLc7QefW8xK8PLiw7ZGUs > secret_key 

# 提供Dashboard证书
[root@ceph-01 /etc/ceph]# ceph dashboard set-rgw-api-access-key -i access_key
Option RGW_API_ACCESS_KEY updated

[root@ceph-01 /etc/ceph]# ceph dashboard set-rgw-api-secret-key -i secret_key
Option RGW_API_SECRET_KEY updated

禁用ssl

直接用http,如果想要用https的话,不需要操作这一步

# ceph dashboard set-rgw-api-ssl-verify False

1、这时候打开 dashboard 刷新就可以看到 rgw 的信息了

1.7 prometheus + grafana 监控 ceph

这里在 ceph-01 安装 promethus + grafana

1.7.1 安装grafana
# 1、配置yum源文件
[root@ceph-01 /etc/ceph]# cat > /etc/yum.repos.d/grafana.repo << EOF
[grafana]
name=grafana
baseurl=https://packages.grafana.com/oss/rpm
repo_gpgcheck=1
enabled=1
gpgcheck=1
gpgkey=https://packages.grafana.com/gpg.key
sslverify=1
sslcacert=/etc/pki/tls/certs/ca-bundle.crt
EOF

# 2.通过yum命令安装grafana
[root@ceph-01 /etc/ceph]# yum install grafana -y 

# 3.启动grafana并设为开机自启
[root@ceph-01 /etc/ceph]# systemctl enable grafana-server --now

[root@ceph-01 /etc/ceph]# grafana-server -v
Version 8.0.5 (commit: cbb2aa5001, branch: HEAD)
[root@ceph-01 /etc/ceph]# grafana-cli -v
Grafana CLI version 8.0.5
1.7.2 安装prometheus
# 1、下载安装包,下载地址https://prometheus.io/download/

[root@ceph-01 ~]# wget https://github.com/prometheus/prometheus/releases/download/v2.28.1/prometheus-2.28.1.linux-amd64.tar.gz

# 2、解压压缩包
[root@ceph-01 ~]# tar xf prometheus-2.28.1.linux-amd64.tar.gz

# 3、将解压后的目录改名
[root@ceph-01 ~]# mv prometheus-2.28.1.linux-amd64 /usr/local/prometheus
[root@ceph-01 ~]# cd /usr/local/prometheus

# 4、查看promethus版本
[root@ceph-01 /usr/local/prometheus]# ./prometheus --version

# 5、配置系统服务启动
[root@ceph-01 /usr/local/prometheus]# cat > /etc/systemd/system/prometheus.service << EOF
[Unit]
Description=Prometheus Monitoring System
Documentation=Prometheus Monitoring System

[Service]
ExecStart=/usr/local/prometheus/prometheus \
  --config.file /usr/local/prometheus/prometheus.yml \
  --web.listen-address=:9090

[Install]
WantedBy=multi-user.target
EOF

# 6、加载系统服务
[root@ceph-01 /usr/local/prometheus]# systemctl daemon-reload

# 7、启动服务和添加开机自启动
[root@ceph-01 /usr/local/prometheus]# systemctl enable prometheus --now
[root@ceph-01 /usr/local/prometheus]# systemctl status prometheus
1.7.3 ceph mgr prometheus插件配置
[root@ceph-01 /usr/local/prometheus]# ceph mgr module enable prometheus
[root@ceph-01 /usr/local/prometheus]# ceph mgr module ls | head -20

# 这里查看到是ceph-01
[root@ceph-01 /usr/local/prometheus]# ceph -s |grep mgr
    mgr: ceph-01(active, since 73s), standbys: ceph-02, ceph-03
    
[root@ceph-01 /usr/local/prometheus]# netstat -nltp | grep mgr 
# 检查端口
[root@ceph-01 /usr/local/prometheus]# curl 127.0.0.1:9283/metrics  
# 测试返回值
1.7.4 配置promethus

1、在 scrape_configs: 配置项下添加

[root@ceph-01 /usr/local/prometheus]# cat >> /usr/local/prometheus/prometheus.yml << EOF
  - job_name: 'ceph_cluster'
    static_configs:
    - targets: ['192.168.99.204:9283']
EOF

注意192.168.99.204:9283这个是正在运行mgr的ip
[root@ceph-01 /usr/local/prometheus]# ceph -s |grep mgr
    mgr: ceph-01(active, since 62m), standbys: ceph-02

2、重启promethus服务

[root@ceph-01 /usr/local/prometheus]# systemctl restart prometheus
[root@ceph-01 /usr/local/prometheus]# systemctl status prometheus

3、检查prometheus服务器中是否添加成功

# 浏览器-》 http://192.168.99.204:9090 -》status -》Targets

4、配置grafana

URL:http://192.168.99.204:3000

默认登陆的用户名密码为admin admin,登陆成功后会强制修改密码自己修改后的密码为admin123

https://grafana.com/grafana/dashboards?search=ceph

917 、2842

1、浏览器登录 grafana 管理界面

2、添加prometheus的data sources,点击configuration--》data sources

3、添加dashboard,打开官网https://grafana.com/grafana/dashboards?search=ceph 选择合适的dashboard,记录编号,点击import导入仪表板模板

1、添加prometheus

2021-10-07_182755
2021-10-07_182815
2021-10-07_194616
2021-10-07_194716
2021-10-07_194743

2、添加ceph-dashboard

2021-10-07_194916
2021-10-07_195010
2021-10-07_195029
2021-10-07_195052
2021-10-07_195110

二、k8s对接外部ceph集群

k8s可以通过两种方式使用ceph作为volume:

  • cephfs
  • rbd

1)一个ceph集群仅支持一个cephfs

2)cephfs方式支持k8s的pv的3种访问模式ReadWriteOnce、ReadOnlyMany 、ReadWriteMany

3)rbd支持ReadWriteOnce、ReadOnlyMany两种模式

注意:访问模式只是能力描述,并不是强制执行的,对于没有按pvc声明的方式使用pv,存储提供者应该负责访问时的运行错误。例如如果设置pvc的访问模式为ReadOnlyMany ,pod挂载后依然可写,如果需要真正的不可写,申请pvc是需要指定 readOnly: true 参数

2.1 静态PV(rbd)方式

2.1.1 安装依赖组件(所有k8s组件)

注意:安装ceph-common软件包推荐使用软件包源与Ceph集群源相同,软件版本一致。

$ cat > /etc/yum.repos.d/ceph.repo << EOF
[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/x86_64/
enabled=1
gpgcheck=0
priority=1

[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/noarch/
enabled=1
gpgcheck=0
priority=1

[ceph-source]
name=Ceph source packages
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/SRPMS
enabled=1
gpgcheck=0
priority=1
EOF
$ yum install ceph-common -y
2.1.2 同步ceph配置文件
[root@ceph-01 ~]# ssh-copy-id k8s-master
[root@ceph-01 ~]# ssh-copy-id k8s-node01
[root@ceph-01 ~]# ssh-copy-id k8s-node02

[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03 ceph-client k8s-master k8s-node01 k8s-node02
2.1.3 创建存储池并开启rbd功能
$ ceph osd pool create kube 128 128
# 创建kube池给k8s使用
2.1.4 创建ceph用户,提供给k8s使用
$ ceph auth list
# 查看ceph集群中的认证用户及相关的key

$ ceph auth del osd.0    # (这里只是给个删除用户命令,请勿执行啊!!)
# 删除集群中的一个认证用户

$ ceph auth get-or-create client.kube mon 'allow r' osd 'allow class-read object_prefix rbd_children,allow rwx pool=kube'
# 创建ceph用户,提供给k8s使用
2.1.5 创建secret资源
$ ceph auth get-key client.admin | base64
$ ceph auth get-key client.kube | base64

base64 单向加密一下,k8s不以明文方式存储账号密码

$ mkdir jtpv && cd jtpv

$ cat > ceph-admin-secret.yaml << EOF
apiVersion: v1
kind: Secret
metadata:
  name: ceph-admin-secret
  namespace: default
data:
  key:  #( admin 的key)
type:
  kubernetes.io/rbd
EOF

$ cat > ceph-kube-secret.yaml << EOF
apiVersion: v1
kind: Secret
metadata:
  name: ceph-kube-secret
  namespace: default
data:
  key:  #( kube 的key)
type:
  kubernetes.io/rbd
EOF

$ cat > pv.yaml << EOF
apiVersion: v1
kind: PersistentVolume
metadata:
  name: ceph-pv-test
spec:
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  rbd:
    monitors:
      - 192.168.99.204:6789
      - 192.168.99.205:6789
      - 192.168.99.206:6789
    pool: kube
    image: ceph-image
    user: admin
    secretRef:
      name: ceph-admin-secret
    fsType: ext4
    readOnly: false
  persistentVolumeReclaimPolicy: Retain
EOF

$ rbd create -p kube -s 5G ceph-image
# 创建镜像(说白了就是划出一块空间给它用的意思)

$ rbd ls -p kube
ceph-image
$ rbd info ceph-image -p kube
$ rbd feature disable kube/ceph-image object-map fast-diff deep-flatten
# 去除不支持的特性

$ cat > pvc.yaml << EOF
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: ceph-test-claim
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi
EOF

$ cat > pod.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
  name: ceph-pod
spec:
  containers:
  - name: test-pod
    image: busybox:1.24
    command: ["sleep", "60000"]
    volumeMounts:
    - name: pvc
      mountPath: /usr/share/busybox
      readOnly: false
  volumes:
    - name: pvc
      persistentVolumeClaim:
        claimName: ceph-test-claim
EOF

验证:

$ kubectl apply -f ceph-admin-secret.yaml
$ kubectl apply -f ceph-kube-secret.yaml
$ kubectl apply -f pv.yaml
$ kubectl apply -f pvc.yaml
$ kubectl apply -f pod.yaml

$ kubectl exec -it ceph-pod  -- df -h |grep /dev/rbd0
/dev/rbd0                 4.8G     20.0M      4.8G   0% /usr/share/busybox

2.2 动态pv(cephfs)方式

2.2.1 ceph操作

1、在 ceph-01 部署节点上同步配置文件,并创建至少一个 mds 服务

使用 cephfs 必须保证至少有一个节点提供 mds 服务

[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03

#这里做三个mds
[root@ceph-01 /etc/ceph]# ceph-deploy mds create ceph-01 ceph-02 ceph-03

[root@ceph-01 /etc/ceph]# ceph -s

2、创建存储池 、文件系统

1、创建 cephfs 存储池 :fs_metadata 、fs_data

2、创建 cephfs 文件系统:命名为 cephfs

一个 ceph 文件系统需要至少两个 RADOS 存储池,一个用于数据,一个用于元数据。

$ ceph osd pool create fs_data 128 128
$ ceph osd pool create fs_metadata 128 128
$ ceph fs new cephfs fs_metadata fs_data
$ ceph fs ls

获取集群信息和查看 admin 用户 key(秘钥)

$ ceph mon dump
$ ceph auth get client.admin

注意:这里不需要 base64 加密

2.2.2 k8s操作部分

1、所有 k8s节点安装依赖组件

$ cat > /etc/yum.repos.d/ceph.repo << EOF
[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/x86_64/
enabled=1
gpgcheck=0
priority=1

[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/noarch/
enabled=1
gpgcheck=0
priority=1

[ceph-source]
name=Ceph source packages
baseurl=http://mirrors.aliyun.com/ceph/rpm-nautilus/el7/SRPMS
enabled=1
gpgcheck=0
priority=1
EOF
$ yum install ceph-common -y

2、需要把 ceph 集群的 /etc/ceph/{ceph.conf,ceph.client.admin.keyring} 文件同步到 k8s 所有节点上

[root@ceph-01 ~]# ssh-copy-id k8s-master
[root@ceph-01 ~]# ssh-copy-id k8s-node01
[root@ceph-01 ~]# ssh-copy-id k8s-node02

[root@ceph-01 /etc/ceph]# ceph-deploy --overwrite-conf admin ceph-01 ceph-02 ceph-03 ceph-client k8s-master k8s-node01 k8s-node02
2.2.3 部署cephfs csi

gitlab官方仓库

$ mkdir -p /root/my-ceph-csi/deploy/cephfs && cd /root/my-ceph-csi/deploy/cephfs
# 创建所需目录

修改 csi-config-map.yaml 文件,配置连接 ceph 集群的信息

$ cat > csi-config-map.yaml << EOF
---
apiVersion: v1
kind: ConfigMap
data:
  config.json: |-
    [
      {
        "clusterID": "96f54e84-dbfc-4650-8896-8f3b5f524bbf", # ceph集群的ID,此内容可以使用ceph mon dump来查看,clusterID对应fsid
        "monitors": [
          "192.168.99.204:6789,192.168.99.205:6789,192.168.99.206:6789"
        ]
      }
    ] 
metadata:
  name: ceph-csi-config
EOF

需要把注释去掉,不然容易报错!!!

如果你需要部署到xxx命名空间里,需要把csi-provisioner-rbac.yaml和csi-nodeplugin-rbac.yaml里面的命名空间改为xxx,这里使用yaml文件里面默认的default命名空间

部署 cephfs 相关的 csi

$ cat > csi-provisioner-rbac.yaml << EOF
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: cephfs-csi-provisioner

---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: cephfs-external-provisioner-runner
rules:
  - apiGroups: [""]
    resources: ["nodes"]
    verbs: ["get", "list", "watch"]
  - apiGroups: [""]
    resources: ["secrets"]
    verbs: ["get", "list"]
  - apiGroups: [""]
    resources: ["events"]
    verbs: ["list", "watch", "create", "update", "patch"]
  - apiGroups: [""]
    resources: ["persistentvolumes"]
    verbs: ["get", "list", "watch", "create", "delete", "patch"]
  - apiGroups: [""]
    resources: ["persistentvolumeclaims"]
    verbs: ["get", "list", "watch", "update"]
  - apiGroups: ["storage.k8s.io"]
    resources: ["storageclasses"]
    verbs: ["get", "list", "watch"]
  - apiGroups: ["snapshot.storage.k8s.io"]
    resources: ["volumesnapshots"]
    verbs: ["get", "list"]
  - apiGroups: ["snapshot.storage.k8s.io"]
    resources: ["volumesnapshotcontents"]
    verbs: ["create", "get", "list", "watch", "update", "delete"]
  - apiGroups: ["snapshot.storage.k8s.io"]
    resources: ["volumesnapshotclasses"]
    verbs: ["get", "list", "watch"]
  - apiGroups: ["storage.k8s.io"]
    resources: ["volumeattachments"]
    verbs: ["get", "list", "watch", "update", "patch"]
  - apiGroups: ["storage.k8s.io"]
    resources: ["volumeattachments/status"]
    verbs: ["patch"]
  - apiGroups: [""]
    resources: ["persistentvolumeclaims/status"]
    verbs: ["update", "patch"]
  - apiGroups: ["storage.k8s.io"]
    resources: ["csinodes"]
    verbs: ["get", "list", "watch"]
  - apiGroups: ["snapshot.storage.k8s.io"]
    resources: ["volumesnapshotcontents/status"]
    verbs: ["update"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: cephfs-csi-provisioner-role
subjects:
  - kind: ServiceAccount
    name: cephfs-csi-provisioner
    namespace: default
roleRef:
  kind: ClusterRole
  name: cephfs-external-provisioner-runner
  apiGroup: rbac.authorization.k8s.io

---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  # replace with non-default namespace name
  namespace: default
  name: cephfs-external-provisioner-cfg
rules:
  # remove this once we stop supporting v1.0.0
  - apiGroups: [""]
    resources: ["configmaps"]
    verbs: ["get", "list", "create", "delete"]
  - apiGroups: ["coordination.k8s.io"]
    resources: ["leases"]
    verbs: ["get", "watch", "list", "delete", "update", "create"]

---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: cephfs-csi-provisioner-role-cfg
  # replace with non-default namespace name
  namespace: default
subjects:
  - kind: ServiceAccount
    name: cephfs-csi-provisioner
    # replace with non-default namespace name
    namespace: default
roleRef:
  kind: Role
  name: cephfs-external-provisioner-cfg
  apiGroup: rbac.authorization.k8s.io
EOF

$ cat > csi-nodeplugin-rbac.yaml << EOF
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: cephfs-csi-nodeplugin
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: cephfs-csi-nodeplugin
rules:
  - apiGroups: [""]
    resources: ["nodes"]
    verbs: ["get"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: cephfs-csi-nodeplugin
subjects:
  - kind: ServiceAccount
    name: cephfs-csi-nodeplugin
    namespace: default
roleRef:
  kind: ClusterRole
  name: cephfs-csi-nodeplugin
  apiGroup: rbac.authorization.k8s.io
EOF

$ vim csi-cephfsplugin-provisioner.yaml
---
kind: Service
apiVersion: v1
metadata:
  name: csi-cephfsplugin-provisioner
  labels:
    app: csi-metrics
spec:
  selector:
    app: csi-cephfsplugin-provisioner
  ports:
    - name: http-metrics
      port: 8080
      protocol: TCP
      targetPort: 8681

---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: csi-cephfsplugin-provisioner
spec:
  selector:
    matchLabels:
      app: csi-cephfsplugin-provisioner
  replicas: 3
  template:
    metadata:
      labels:
        app: csi-cephfsplugin-provisioner
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                      - csi-cephfsplugin-provisioner
              topologyKey: "kubernetes.io/hostname"
      serviceAccountName: cephfs-csi-provisioner
      priorityClassName: system-cluster-critical
      containers:
        - name: csi-provisioner
          image: k8s.gcr.io/sig-storage/csi-provisioner:v2.2.2
          args:
            - "--csi-address=$(ADDRESS)"
            - "--v=5"
            - "--timeout=150s"
            - "--leader-election=true"
            - "--retry-interval-start=500ms"
            - "--feature-gates=Topology=false"
            - "--extra-create-metadata=true"
          env:
            - name: ADDRESS
              value: unix:///csi/csi-provisioner.sock
          imagePullPolicy: "IfNotPresent"
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
        - name: csi-resizer
          image: k8s.gcr.io/sig-storage/csi-resizer:v1.2.0
          args:
            - "--csi-address=$(ADDRESS)"
            - "--v=5"
            - "--timeout=150s"
            - "--leader-election"
            - "--retry-interval-start=500ms"
            - "--handle-volume-inuse-error=false"
          env:
            - name: ADDRESS
              value: unix:///csi/csi-provisioner.sock
          imagePullPolicy: "IfNotPresent"
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
        - name: csi-snapshotter
          image: k8s.gcr.io/sig-storage/csi-snapshotter:v4.1.1
          args:
            - "--csi-address=$(ADDRESS)"
            - "--v=5"
            - "--timeout=150s"
            - "--leader-election=true"
          env:
            - name: ADDRESS
              value: unix:///csi/csi-provisioner.sock
          imagePullPolicy: "IfNotPresent"
          securityContext:
            privileged: true
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
        - name: csi-cephfsplugin-attacher
          image: k8s.gcr.io/sig-storage/csi-attacher:v3.2.1
          args:
            - "--v=5"
            - "--csi-address=$(ADDRESS)"
            - "--leader-election=true"
            - "--retry-interval-start=500ms"
          env:
            - name: ADDRESS
              value: /csi/csi-provisioner.sock
          imagePullPolicy: "IfNotPresent"
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
        - name: csi-cephfsplugin
          securityContext:
            privileged: true
            capabilities:
              add: ["SYS_ADMIN"]
          # for stable functionality replace canary with latest release version
          image: quay.io/cephcsi/cephcsi:canary
          args:
            - "--nodeid=$(NODE_ID)"
            - "--type=cephfs"
            - "--controllerserver=true"
            - "--endpoint=$(CSI_ENDPOINT)"
            - "--v=5"
            - "--drivername=cephfs.csi.ceph.com"
            - "--pidlimit=-1"
            - "--enableprofiling=false"
          env:
            - name: POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
            - name: NODE_ID
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: CSI_ENDPOINT
              value: unix:///csi/csi-provisioner.sock
          imagePullPolicy: "IfNotPresent"
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
            - name: host-sys
              mountPath: /sys
            - name: lib-modules
              mountPath: /lib/modules
              readOnly: true
            - name: host-dev
              mountPath: /dev
            - name: ceph-csi-config
              mountPath: /etc/ceph-csi-config/
            - name: keys-tmp-dir
              mountPath: /tmp/csi/keys
        - name: liveness-prometheus
          image: quay.io/cephcsi/cephcsi:canary
          args:
            - "--type=liveness"
            - "--endpoint=$(CSI_ENDPOINT)"
            - "--metricsport=8681"
            - "--metricspath=/metrics"
            - "--polltime=60s"
            - "--timeout=3s"
          env:
            - name: CSI_ENDPOINT
              value: unix:///csi/csi-provisioner.sock
            - name: POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
          imagePullPolicy: "IfNotPresent"
      volumes:
        - name: socket-dir
          emptyDir: {
            medium: "Memory"
          }
        - name: host-sys
          hostPath:
            path: /sys
        - name: lib-modules
          hostPath:
            path: /lib/modules
        - name: host-dev
          hostPath:
            path: /dev
        - name: ceph-csi-config
          configMap:
            name: ceph-csi-config
        - name: keys-tmp-dir
          emptyDir: {
            medium: "Memory"
          }


$ vim csi-cephfsplugin.yaml
---
kind: DaemonSet
apiVersion: apps/v1
metadata:
  name: csi-cephfsplugin
spec:
  selector:
    matchLabels:
      app: csi-cephfsplugin
  template:
    metadata:
      labels:
        app: csi-cephfsplugin
    spec:
      serviceAccountName: cephfs-csi-nodeplugin
      priorityClassName: system-node-critical
      hostNetwork: true
      # to use e.g. Rook orchestrated cluster, and mons' FQDN is
      # resolved through k8s service, set dns policy to cluster first
      dnsPolicy: ClusterFirstWithHostNet
      containers:
        - name: driver-registrar
          # This is necessary only for systems with SELinux, where
          # non-privileged sidecar containers cannot access unix domain socket
          # created by privileged CSI driver container.
          securityContext:
            privileged: true
          image: k8s.gcr.io/sig-storage/csi-node-driver-registrar:v2.2.0
          args:
            - "--v=5"
            - "--csi-address=/csi/csi.sock"
            - "--kubelet-registration-path=/var/lib/kubelet/plugins/cephfs.csi.ceph.com/csi.sock"
          env:
            - name: KUBE_NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
            - name: registration-dir
              mountPath: /registration
        - name: csi-cephfsplugin
          securityContext:
            privileged: true
            capabilities:
              add: ["SYS_ADMIN"]
            allowPrivilegeEscalation: true
          # for stable functionality replace canary with latest release version
          image: quay.io/cephcsi/cephcsi:canary
          args:
            - "--nodeid=$(NODE_ID)"
            - "--type=cephfs"
            - "--nodeserver=true"
            - "--endpoint=$(CSI_ENDPOINT)"
            - "--v=5"
            - "--drivername=cephfs.csi.ceph.com"
            - "--enableprofiling=false"
            # If topology based provisioning is desired, configure required
            # node labels representing the nodes topology domain
            # and pass the label names below, for CSI to consume and advertise
            # its equivalent topology domain
            # - "--domainlabels=failure-domain/region,failure-domain/zone"
          env:
            - name: POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
            - name: NODE_ID
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: CSI_ENDPOINT
              value: unix:///csi/csi.sock
          imagePullPolicy: "IfNotPresent"
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
            - name: mountpoint-dir
              mountPath: /var/lib/kubelet/pods
              mountPropagation: Bidirectional
            - name: plugin-dir
              mountPath: /var/lib/kubelet/plugins
              mountPropagation: "Bidirectional"
            - name: host-sys
              mountPath: /sys
            - name: lib-modules
              mountPath: /lib/modules
              readOnly: true
            - name: host-dev
              mountPath: /dev
            - name: host-mount
              mountPath: /run/mount
            - name: ceph-csi-config
              mountPath: /etc/ceph-csi-config/
            - name: keys-tmp-dir
              mountPath: /tmp/csi/keys
        - name: liveness-prometheus
          securityContext:
            privileged: true
          image: quay.io/cephcsi/cephcsi:canary
          args:
            - "--type=liveness"
            - "--endpoint=$(CSI_ENDPOINT)"
            - "--metricsport=8681"
            - "--metricspath=/metrics"
            - "--polltime=60s"
            - "--timeout=3s"
          env:
            - name: CSI_ENDPOINT
              value: unix:///csi/csi.sock
            - name: POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
          volumeMounts:
            - name: socket-dir
              mountPath: /csi
          imagePullPolicy: "IfNotPresent"
      volumes:
        - name: socket-dir
          hostPath:
            path: /var/lib/kubelet/plugins/cephfs.csi.ceph.com/
            type: DirectoryOrCreate
        - name: registration-dir
          hostPath:
            path: /var/lib/kubelet/plugins_registry/
            type: Directory
        - name: mountpoint-dir
          hostPath:
            path: /var/lib/kubelet/pods
            type: DirectoryOrCreate
        - name: plugin-dir
          hostPath:
            path: /var/lib/kubelet/plugins
            type: Directory
        - name: host-sys
          hostPath:
            path: /sys
        - name: lib-modules
          hostPath:
            path: /lib/modules
        - name: host-dev
          hostPath:
            path: /dev
        - name: host-mount
          hostPath:
            path: /run/mount
        - name: ceph-csi-config
          configMap:
            name: ceph-csi-config
        - name: keys-tmp-dir
          emptyDir: {
            medium: "Memory"
          }
---
# This is a service to expose the liveness metrics
apiVersion: v1
kind: Service
metadata:
  name: csi-metrics-cephfsplugin
  labels:
    app: csi-metrics
spec:
  ports:
    - name: http-metrics
      port: 8080
      protocol: TCP
      targetPort: 8681
  selector:
    app: csi-cephfsplugin

先离线把镜像导入进去(k8s所有节点)

离线镜像百度网盘下载链接:https://pan.baidu.com/s/1xp2cJTDD-KR2hYqTD3L9QQ
提取码:m66b

$ grep image csi-cephfsplugin-provisioner.yaml 
# 查看所需镜像

# 上传镜像包到服务上
$ unzip '*.zip'
$ ls *tar |xargs -i docker load -i {} && docker images

因为这里k8s集群只有三台,所以必须配置k8s的master运行pod

# 查看master表示不运行pod
[root@master ~]# kubectl describe node k8s-master |grep Taints
Taints: node-role.kubernetes.io/k8s-master:NoSchedule
# 查看master表示运行pod
[root@master ~]# kubectl describe node k8s-master |grep Taints
Taints: <none>
# 让master节点参与pod负载的命令为
[root@master ~]# kubectl taint nodes k8s-master node-role.kubernetes.io/master-
# 让master节点恢复不参与pod负载的命令为 
[root@master ~]# kubectl taint nodes k8s-master node-role.kubernetes.io/master=:NoSchedule

部署

$ kubectl apply -f csi-config-map.yaml
$ kubectl create -f csi-provisioner-rbac.yaml
$ kubectl create -f csi-nodeplugin-rbac.yaml
$ kubectl create -f csi-cephfsplugin-provisioner.yaml
$ kubectl create -f csi-cephfsplugin.yaml

验证

1、k8s 上创建连接 ceph 集群的秘钥(创建 secret.yaml)

$ cat > secret.yaml << EOF
---
apiVersion: v1
kind: Secret
metadata:
  name: csi-cephfs-secret
  namespace: default
stringData:
  # 通过ceph auth get client.admin查看,这里不需要base64加密
  # Required for statically provisioned volumes
  userID: admin
  userKey: AQCoAPBg9LQTMhAALBgNqW3DDcaAm9NL6HFzaA==

  # Required for dynamically provisioned volumes
  adminID: admin
  adminKey: AQCoAPBg9LQTMhAALBgNqW3DDcaAm9NL6HFzaA==
EOF

$ kubectl apply -f secret.yaml

$ kubectl get secret csi-cephfs-secret -n default

2、创建存储类(创建 storageclass.yaml)

修改字段1(clusterID:)、改成自己ceph集群的ID,ceph mon dump

修改字段2(fsName:)、填写上面创建名为cephfs的文件系统 ,ceph fs ls

修改字段3(pool:)、去掉注释,填写数据pool,不是元数据的pool ceph osd pool ls

$ cat > storageclass.yaml <<EOF
---
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: csi-cephfs-sc
provisioner: cephfs.csi.ceph.com
parameters:
  clusterID: 96f54e84-dbfc-4650-8896-8f3b5f524bbf #此处需要修改
  fsName: cephfs #此处需要修改
  pool: fs_data #此处需要修改
  csi.storage.k8s.io/provisioner-secret-name: csi-cephfs-secret
  csi.storage.k8s.io/provisioner-secret-namespace: default
  csi.storage.k8s.io/controller-expand-secret-name: csi-cephfs-secret
  csi.storage.k8s.io/controller-expand-secret-namespace: default
  csi.storage.k8s.io/node-stage-secret-name: csi-cephfs-secret
  csi.storage.k8s.io/node-stage-secret-namespace: default
reclaimPolicy: Delete
allowVolumeExpansion: true
mountOptions:
  - debug
EOF
  
$ kubectl apply -f storageclass.yaml

$ kubectl get sc csi-cephfs-sc -n default

3、基于 sc 创建 pvc

$ cat > pvc.yaml << EOF
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: csi-cephfs-pvc
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  storageClassName: csi-cephfs-sc
EOF

$ kubectl apply -f pvc.yaml

$ kubectl get pvc

4、创建 pod 应用 pvc

$ cat > pod.yaml << EOF
---
apiVersion: v1
kind: Pod
metadata:
  name: csi-cephfs-demo-pod
spec:
  containers:
    - name: web-server
      image: nginx:alpine
      volumeMounts:
        - name: mypvc
          mountPath: /var/lib/www
  volumes:
    - name: mypvc
      persistentVolumeClaim:
        claimName: csi-cephfs-pvc
        readOnly: false
EOF

$ kubectl apply -f pod.yaml

$ kubectl get pod csi-cephfs-demo-pod -n default

查看数据存放目录

$ kubectl exec -it csi-cephfs-demo-pod -- df -Th | grep ceph
192.168.99.204:6789,192.168.99.205:6789,192.168.99.206:6789:/volumes/csi/csi-vol-ba73d3f4-2f3a-11ec-8925-865ed536e16d/79a41bdb-9bfb-4d70-a98c-487a7f8ba04d
                     ceph            1.0G         0      1.0G   0% /var/lib/www
*************** 当你发现自己的才华撑不起野心时,就请安静下来学习吧!***************
posted @ 2021-10-07 22:37  吕振江  阅读(13)  评论(0编辑  收藏  举报
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