kubesphere+kubernetes搭建生产环境高可用集群（二）
GlusterFS系统是一个可扩展的网络文件系统，相比其他分布式文件系统，GlusterFS具有高扩展性、高可用性、高性能、可横向扩展等特点，并且其没有元数据服务器的设计，让整个服务没有单点故障的隐患。包括粗粒度、条带、副本、条带副本和EC，可以根据用户的需求，满足不同程度的冗余。Heketi提供了RESTful管理接口，可用于管理GlusterFS卷的生命周期。能够在OpenStack，Kube
·
基于KubeSphere的Kubenetes生产实践之路-持久化存储之GlusterFS
前提说明
Kubenetes使用GlusterFS存储的方式
- 通过Heketi管理GlusterFS，Kubenetes调用Heketi的接口
- GlusterFS结合NFS-Ganesha提供NFS存储，Kubenetes采用NFS的方式挂载
- Kubenetes挂载GlusterFS提供的数据卷到本地的存储目录，Kubenetes采用hostpatch的方式
- 利用KubeSphere初始化安装集群的时候也可以直接使用GlusterFS作为持久化存储，具体操作可以参考安装 GlusterFS
使用说明
- 本次选型使用的是Heketi的对接方案，使用比较广泛，网上的参考用例比较多，但是该方案也存在一定弊端，各位需要根据自己的情况选择
- 实现形式在底层创建了一堆的lvs卷(文中有效果展示)，如果卷太多又太小的话，后期运维会比较麻烦，有一定的未知风险。
- Heketi官方已经停止更新了，项目处于维护状态，这就比较麻烦了，新入坑者慎入
- NFS-Ganesha的方案以前对接ceph的时候使用过，但是当时的稳定度不高，经常出现进程死掉的情况，对接GlusterFS没有测试过
- 作为本地卷挂载的方式，个人认为稳定度和性能上应该是最好的，但是由于是本地盘，使用场景受限，可根据使用需求酌情使用
GlusterFS分布式文件系统介绍
简介
GlusterFS系统是一个可扩展的网络文件系统，相比其他分布式文件系统，GlusterFS具有高扩展性、高可用性、高性能、可横向扩展等特点，并且其没有元数据服务器的设计，让整个服务没有单点故障的隐患。
优点
1. 无元数据节点性能瓶颈
- 采用无中心对称式架构，没有专用的元数据服务器，也就不存在元数据服务器瓶颈。
- 元数据存在于文件的属性和扩展属性中。当需要访问某文件时，客户端使用DHT算法，根据文件的路径和文件名计算出文件所在brick，然后由客户端从此brick获取数据，省去了同元数据服务器通信的过程。
2. 良好的可扩展性
- 使用弹性hash算法代替传统的有元数据节点服务，获得了接近线性的高扩展性。
3. 高可用
- 采用副本、EC等冗余设计，保证在冗余范围内的节点掉线时，仍然可以从其它服务节点获取数据，保证高可用性。采用弱一致性的设计，当向副本中文件写入数据时，客户端计算出文件所在brick，然后通过网络把数据传给所在brick，当其中有一个成功返回，就认为数据成功写入，不必等待其它brick返回，就会避免当某个节点网络异常或磁盘损坏时因为一个brick没有成功写入而导致写操作等待。
- 服务器端还会随着存储池的启动，而开启一个glustershd进程，这个进程会定期检查副本和EC卷中各个brick之间数据的一致性，并恢复。
4. 存储池类型丰富
包括粗粒度、条带、副本、条带副本和EC，可以根据用户的需求，满足不同程度的冗余。
- 粗粒度卷不带任何冗余，文件不进行切片，是完整的存放在某个brick上。
- 条带卷不带任何冗余，文件会切片存储（默认大小为128kB）在不同的brick上。这些切片可以并发读写（并发粒度是条带块），可以明显提高读写性能。该模式一般只适合用于处理超大型文件和多节点性能要求高的情况。
- 副本卷冗余度高，副本数量可以灵活配置，可以保证数据的安全性。
- 条带副本卷是条带卷和副本卷的结合。
- EC卷使用EC校验算法，提供了低于副本卷的冗余度，冗余度小于100%，满足比较低的数据安全性，例如可以使2+1（冗余度为50%）、5+3（冗余度为60%）等。这个可以满足安全性要求不高的数据。
5. 高性能
- 采用弱一致性的设计，向副本中写数据时，只要有一个brick成功返回，就认为写入成功，不必等待其它brick返回，这样的方式比强一致性要快。
- 还提供了I/O并发、write-behind、read-ahead、io-cache、条带等提高读写性能的技术。并且这些都还可以根据实际需求进行开启/关闭，i/o并发数量，cache大小都可以调整。
Heketi介绍
简介
Heketi提供了RESTful管理接口，可用于管理GlusterFS卷的生命周期。能够在OpenStack，Kubernetes，Openshift等云平台上实现动态存储资源供应（动态在GlusterFS集群内选择bricks构建volume）；支持GlusterFS多集群管理。 Heketi的目标是提供一种在多个存储群集中创建，列出和删除GlusterFS卷的简单方法。 Heketi将智能地管理群集中整个磁盘的分配，创建和删除。 在满足任何请求之前，Heketi首先需要了解集群的拓扑（topologies ）也就是需要配置topologies.json文件 。 此json文件将数据资源组织为以下内容：群集、节点、设备的归属、以及块的归属。
Heketi-cli命令行工具向Heketi提供要管理的GlusterFS集群的信息。它通过变量HEKETI_CLI_SERVER来找自已的服务端。
总体架构展示
安装配置
系统基础配置
- 检查操作系统版本并进行内核升级
[root@localhost ~]# yum update
[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
- 修改主机名
- 节点一
[root@localhost ~]# hostnamectl set-hostname glusterfs-node-0
[root@localhost ~]# su
[root@glusterfs-node-0 ~]#
- 节点二
[root@localhost ~]# hostnamectl set-hostname glusterfs-node-1
[root@localhost ~]# su
[root@glusterfs-node-1 ~]#
- 节点三
[root@localhost ~]# hostnamectl set-hostname glusterfs-node-2
[root@localhost ~]# su
[root@glusterfs-node-2 ~]#
- 关闭防火墙及selinux(所有节点执行)
# 关闭防火墙开机自启
[root@glusterfs-node-0 ~]# systemctl disable firewalld
# 临时关闭防火墙
[root@glusterfs-node-0 ~]# systemctl stop firewalld
# 永久关闭selinux
[root@glusterfs-node-0 ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
# 临时关闭selinux
[root@glusterfs-node-0 ~]# setenforce 0
安装配置GLusterFS
- 配置glusterfs的yum源(所有节点执行)
[root@glusterfs-node-0 ~]# vi /etc/yum.repos.d/glusterfs.repo
[glusterfs]
name=glusterfs
baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/7.9.2009/storage/x86_64/gluster-9/
#gpgkey=https://mirrors.tuna.tsinghua.edu.cn/centos/RPM-GPG-KEY-CentOS-7
gpgcheck=0
ebabled=1
#####arm64架构源
[glusterfs]
name=glusterfs
baseurl=https://repo.huaweicloud.com/centos-altarch/7.9.2009/storage/aarch64/gluster-9/
#gpgkey=https://mirrors.tuna.tsinghua.edu.cn/centos/RPM-GPG-KEY-CentOS-7
gpgcheck=0
ebabled=1
#清除yum缓存
[root@glusterfs-node-0 ~]# yum clean all
#生成yum缓存
[root@glusterfs-node-0 ~]# yum makecache
- 安装glusterfs(三个节点执行)
[root@glusterfs-node-0 ~]# yum install centos-release-gluster glusterfs-server glusterfs-client -y
- 启动glusterfs服务
[root@glusterfs-node-0 ~]# systemctl start glusterd.service && systemctl enable glusterd.service
# 查看glusterfs服务状态
[root@glusterfs-node-0 ~]# systemctl status glusterd.service
# 查看glusterfs服务端口
[root@glusterfs-node-0 ~]# ss -lntp | grep glusterd
LISTEN 0 128 *:24007 *:* users:(("glusterd",pid=108776,fd=10))
配置glusterfs集群节点
[root@glusterfs-node-0 ~]# gluster peer probe glusterfs-node-1
peer probe: success
[root@glusterfs-node-0 ~]# gluster peer probe glusterfs-node-2
peer probe: success
# 查看集群节点信息
[root@glusterfs-node-0 ~]# gluster peer status
Number of Peers: 2
Hostname: glusterfs-node-1
Uuid: 50a3da37-9f0f-49c7-aae4-e4a475beecc9
State: Peer in Cluster (Connected)
Hostname: glusterfs-node-2
Uuid: da245e40-52a7-4651-b44b-8222c237f192
State: Peer in Cluster (Connected)
安装配置Heketi（任选一节点,这里选择节点一）
- 安装软件包
[root@glusterfs-node-0 ~]# yum install heketi heketi-client -y
- heketi服务必要配置
# 生成密钥并配置免密登录
[root@glusterfs-node-0 ~]$ ssh-keygen -t rsa -q -f /etc/heketi/private_key -N ""
[root@glusterfs-node-0 ~]$ ssh-copy-id -i /etc/heketi/private_key.pub glusterfs-node-0
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/etc/heketi/private_key.pub"
/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
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'glusterfs-node-0'"
and check to make sure that only the key(s) you wanted were added.
[root@glusterfs-node-0 ~]$ ssh-copy-id -i /etc/heketi/private_key.pub glusterfs-node-1
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/etc/heketi/private_key.pub"
/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
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'glusterfs-node-1'"
and check to make sure that only the key(s) you wanted were added.
[root@glusterfs-node-0 ~]$ ssh-copy-id -i /etc/heketi/private_key.pub glusterfs-node-2
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/etc/heketi/private_key.pub"
/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
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'glusterfs-node-2'"
and check to make sure that only the key(s) you wanted were added.
#测试免密登录
[root@glusterfs-node-0 ~]$ ssh glusterfs-node-0
Last login: Wed Mar 2 09:12:30 2022
[root@glusterfs-node-0 ~]$ exit
[root@glusterfs-node-0 ~]$ ssh glusterfs-node-1
Last login: Wed Mar 2 09:12:30 2022
[root@glusterfs-node-1 ~]$ exit
[root@glusterfs-node-0 ~]$ ssh glusterfs-node-2
Last login: Wed Mar 2 09:12:30 2022
[root@glusterfs-node-2 ~]$ exit
#修改目录权限
[root@glusterfs-node-0 ~]# chown heketi:heketi /etc/heketi/ -R
[root@glusterfs-node-0 ~]# chown heketi:heketi /var/lib/heketi -R
[root@glusterfs-node-0 ~]# chown heketi.heketi /etc/heketi/private_key
编写heketi配置文件
#修改heketi的配置文件
[root@glusterfs-node-0 ~]# vi /etc/heketi/heketi.json
{
"_port_comment": "Heketi Server Port Number",
"port": "48080", #######heketi服务端口可以自定义
"_use_auth": "Enable JWT authorization. Please enable for deployment",
"use_auth": true, ########启动用户认证模式
"_jwt": "Private keys for access",
"jwt": {
"_admin": "Admin has access to all APIs",
"admin": {
"key": "admin@P@ssW0rd" ######heketi所有接口权限admin用户的密码
},
"_user": "User only has access to /volumes endpoint",
"user": {
"key": "user@P@ssW0rd" #####heketi仅仅对卷相关API有权限的user用户密码
}
},
"_glusterfs_comment": "GlusterFS Configuration",
"glusterfs": {
"_executor_comment": [
"Execute plugin. Possible choices: mock, ssh",
"mock: This setting is used for testing and development.",
" It will not send commands to any node.",
"ssh: This setting will notify Heketi to ssh to the nodes.",
" It will need the values in sshexec to be configured.",
"kubernetes: Communicate with GlusterFS containers over",
" Kubernetes exec api."
],
"executor": "ssh", #########配置heketi使用ssh认证模式
"_sshexec_comment": "SSH username and private key file information",
"sshexec": {
"keyfile": "/etc/heketi/private_key", #######heketi使用主机用户的认证密钥文件
"user": "root", ########heketi使用主机的用户root
"port": "22", ######主机的ssh服务端口
"fstab": "/etc/fstab"
},
"_kubeexec_comment": "Kubernetes configuration",
"kubeexec": {
"host" :"https://kubernetes.host:8443",
"cert" : "/path/to/crt.file",
"insecure": false,
"user": "kubernetes username",
"password": "password for kubernetes user",
"namespace": "OpenShift project or Kubernetes namespace",
"fstab": "Optional: Specify fstab file on node. Default is /etc/fstab"
},
"_db_comment": "Database file name",
"db": "/var/lib/heketi/heketi.db", #####heketi数据存储文件
"_loglevel_comment": [
"Set log level. Choices are:",
" none, critical, error, warning, info, debug",
"Default is warning"
],
"loglevel" : "debug"
}
}
启动服务
#启动heketi服务
[root@glusterfs-node-0 ~]# systemctl enable heketi.service && systemctl start heketi.service
#查看服务状态
[root@glusterfs-node-0 ~]# systemctl status heketi
● heketi.service - Heketi Server
Loaded: loaded (/usr/lib/systemd/system/heketi.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2022-03-02 12:02:59 IST; 14min ago
Main PID: 120229 (heketi)
CGroup: /system.slice/heketi.service
└─120229 /usr/bin/heketi --config=/etc/heketi/heketi.json
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: Main PID: 234479 (glusterd)
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: Tasks: 9
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: Memory: 6.0M
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: CGroup: /system.slice/glusterd.service
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: └─234479 /usr/sbin/glusterd -p /var/run/glusterd.pid --log-level INFO
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: Mar 02 13:52:19 glusterfs-node-2 systemd[1]: Starting GlusterFS, a clustered file-system server...
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: Mar 02 13:52:19 glusterfs-node-2 systemd[1]: Started GlusterFS, a clustered file-system server.
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: ]: Stderr []
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: [heketi] INFO 2022/03/02 12:17:01 Periodic health check status: node cf3ad692cc008e697eb68f2863843391 up=true
Mar 02 12:17:01 glusterfs-node-0 heketi[120229]: [heketi] INFO 2022/03/02 12:17:01 Cleaned 0 nodes from health cache
配置topology
[root@glusterfs-node-0 ~]# vi /etc/heketi/topology.json #配置三个节点的使用信息，这里/dev/db表示后端存储所要使用的数据盘
{
"clusters": [
{
"nodes": [
{
"node": {
"hostnames": {
"manage": [
"192.168.10.1"
],
"storage": [
"192.168.10.1"
]
},
"zone": 1
},
"devices": [
"/dev/sdb"
]
},
{
"node": {
"hostnames": {
"manage": [
"192.168.10.2"
],
"storage": [
"192.168.10.2"
]
},
"zone": 1
},
"devices": [
"/dev/sdb"
]
},
{
"node": {
"hostnames": {
"manage": [
"192.168.10.3"
],
"storage": [
"192.168.10.3"
]
},
"zone": 1
},
"devices": [
"/dev/sdb"
]
}
]
}
]
}
配置环境变量，便于后续管理
[root@glusterfs-node-0 ~]# echo "export HEKETI_CLI_SERVER=http://192.168.10.1:48080" >> /etc/profile.d/heketi.sh
#192.168.10.1为heketi地址
#--user指定的用户为heketi配置文件中配置的admin用户--secret指定的密码为heketi配置文件中配置的admin密码
[root@glusterfs-node-0 ~]# echo "alias heketi-cli='heketi-cli --server '$HEKETI_CLI_SERVER' --user admin --secret admin@P@ssW0rd'" >> ~/.bashrc
#加载环境变量
[root@glusterfs-node-0 ~]# source /etc/profile.d/heketi.sh
[root@glusterfs-node-0 ~]# source ~/.bashrc
根据topology.json来创建集群
#创建集群
[root@glusterfs-node-0 ~]# heketi-cli topology load --json=/etc/heketi/topology.json
Found node 192.168.10.1 on cluster b89a07c2c6e8c533322591bf2a4aa613
Adding device /dev/sdb ... OK
Found node 192.168.10.2 on cluster b89a07c2c6e8c533322591bf2a4aa613
Adding device /dev/sdb ... OK
Found node 192.168.10.3 on cluster b89a07c2c6e8c533322591bf2a4aa613
Adding device /dev/sdb ... OK
#查看集群列表
[root@glusterfs-node-0 ~]# heketi-cli cluster list
Clusters:
Id:b89a07c2c6e8c533322591bf2a4aa613 [file][block]
#查看集群详情，此命令用到的id为查看集群状态时返回的id
[root@glusterfs-node-0 ~]# heketi-cli cluster info b89a07c2c6e8c533322591bf2a4aa613
Cluster id: b89a07c2c6e8c533322591bf2a4aa613
Nodes:
1218c773299856ebaef6f2461051640c
8bffed2d55f652a412c098ee31246559
cf3ad692cc008e697eb68f2863843391
Volumes:
Block: true
File: true
#查看集群节点
[root@glusterfs-node-0 heketi]# heketi-cli node list
Id:1218c773299856ebaef6f2461051640c Cluster:b89a07c2c6e8c533322591bf2a4aa613
Id:8bffed2d55f652a412c098ee31246559 Cluster:b89a07c2c6e8c533322591bf2a4aa613
Id:cf3ad692cc008e697eb68f2863843391 Cluster:b89a07c2c6e8c533322591bf2a4aa613
创建集群时报错解决办法
如果数据盘不是新盘曾经被使用过，创建集群时会报错，可按下面的方法处理
[root@glusterfs-node-0 ~]# heketi-cli topology load --json=/etc/heketi/topology.json
Creating cluster ... ID: b89a07c2c6e8c533322591bf2a4aa613
Allowing file volumes on cluster.
Allowing block volumes on cluster.
Creating node 10.4.11.38 ... ID: 8bffed2d55f652a412c098ee31246559
Adding device /dev/sdb ... Unable to add device: Setup of device /dev/sdb failed (already initialized or contains data?): Can't initialize physical volume "/dev/sdb" of volume group "vg_423c25b95cf33cb94fa192aedd325b26" without -ff
/dev/sdb: physical volume not initialized.
Creating node 10.4.11.39 ... ID: 1218c773299856ebaef6f2461051640c
Adding device /dev/sdb ... Unable to add device: Setup of device /dev/sdb failed (already initialized or contains data?): Can't initialize physical volume "/dev/sdb" of volume group "vg_564e3fb62e748f1451f387deb469541e" without -ff
/dev/sdb: physical volume not initialized.
Creating node 10.4.11.40 ... ID: cf3ad692cc008e697eb68f2863843391
Adding device /dev/sdb ... Unable to add device: Setup of device /dev/sdb failed (already initialized or contains data?): Can't initialize physical volume "/dev/sdb" of volume group "vg_5bc298db6e8cc335d545c96eed7150f0" without -ff
#所有glusterfs节点执行
[root@glusterfs-node-0 ~]# mkfs.xfs -f /dev/sdb
meta-data=/dev/sdb isize=512 agcount=4, agsize=183105408 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=732421632, imaxpct=5
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=357627, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@glusterfs-node-0 ~]# pvcreate -ff --metadatasize=128M --dataalignment=256K /dev/sdb
Wiping xfs signature on /dev/sdb.
Physical volume "/dev/sdb" successfully created.
验证测试
-
创建卷
[root@glusterfs-node-0 ~]# heketi-cli volume create --size=2 --replica=3 Name: vol_aa8a1280b5133a36b32cf552ec9dd3f3 Size: 2 Volume Id: aa8a1280b5133a36b32cf552ec9dd3f3 Cluster Id: b89a07c2c6e8c533322591bf2a4aa613 Mount: 192.168.10.2:vol_aa8a1280b5133a36b32cf552ec9dd3f3 Mount Options: backup-volfile-servers=192.168.10.1,192.168.10.3 Block: false Free Size: 0 Reserved Size: 0 Block Hosting Restriction: (none) Block Volumes: [] Durability Type: replicate Distribute Count: 1 Replica Count: 3 -
查看卷
#查看卷 [root@glusterfs-node-0 heketi]# heketi-cli volume list Id:aa8a1280b5133a36b32cf552ec9dd3f3 Cluster:b89a07c2c6e8c533322591bf2a4aa613 Name:vol_aa8a1280b5133a36b32cf552ec9dd3f #挂载测试，下列命令中的192.168.10.2:vol_aa8a1280b5133a36b32cf552ec9dd3f3为上方创建卷时Mount的返回值，可以用heketi-cli volum info 卷id进行查看 [root@glusterfs-node-0 heketi]# mount -t glusterfs 192.168.10.2:vol_aa8a1280b5133a36b32cf552ec9dd3f3 /mnt #查看挂载详情 [root@glusterfs-node-0 heketi]# df -h Filesystem Size Used Avail Use% Mounted on ............................. 192.168.10.2:vol_aa8a1280b5133a36b32cf552ec9dd3f3 2.0G 54M 2.0G 3% /mnt -
节点详细信息查看
可以看出底层vg和lv的创建详情，了解底层的分配细节
##节点一 #查看节点创建出的pv [root@glusterfs-node-0 ~]# pvdisplay --- Physical volume --- PV Name /dev/sdb VG Name vg_10a23554385cca32a01d7fc3373faf2d PV Size <2.73 TiB / not usable 130.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 715223 Free PE 714705 Allocated PE 518 PV UUID mkDi5V-JHnR-xy2Y-5FcW-2JKg-K9dQ-JeXQCF #查看节点创建出的vg [root@glusterfs-node-0 ~]# vgdisplay --- Volume group --- VG Name vg_10a23554385cca32a01d7fc3373faf2d System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 22 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size <2.73 TiB PE Size 4.00 MiB Total PE 715223 Alloc PE / Size 518 / 2.02 GiB Free PE / Size 714705 / <2.73 TiB VG UUID BzMbsL-FiPz-oVZO-j6o1-Du67-N094-JIbdPB #查看节点创建出的lv [root@glusterfs-node-0 ~]# lvdisplay --- Logical volume --- LV Name tp_8b932b033db44bf8d6b202ec3cd9b6f3 VG Name vg_10a23554385cca32a01d7fc3373faf2d LV UUID hesO25-OdId-1eYo-OLVc-Phe8-3Y3L-z0RcsH LV Write Access read/write (activated read only) LV Creation host, time glusterfs-node-0, 2022-03-03 07:21:30 +0530 LV Pool metadata tp_8b932b033db44bf8d6b202ec3cd9b6f3_tmeta LV Pool data tp_8b932b033db44bf8d6b202ec3cd9b6f3_tdata LV Status available # open 2 LV Size 2.00 GiB Allocated pool data 0.70% Allocated metadata 10.32% Current LE 512 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:6 --- Logical volume --- LV Path /dev/vg_10a23554385cca32a01d7fc3373faf2d/brick_8b932b033db44bf8d6b202ec3cd9b6f3 LV Name brick_8b932b033db44bf8d6b202ec3cd9b6f3 VG Name vg_10a23554385cca32a01d7fc3373faf2d LV UUID VpkvpB-cmQo-jYgf-g83G-XA8C-1yxG-gAXksl LV Write Access read/write LV Creation host, time glusterfs-node-0, 2022-03-03 07:21:30 +0530 LV Pool name tp_8b932b033db44bf8d6b202ec3cd9b6f3 LV Status available # open 1 LV Size 2.00 GiB Mapped size 0.70% Current LE 512 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:8 ##节点二 [root@glusterfs-node-1 ~]# pvdisplay --- Physical volume --- PV Name /dev/sdb VG Name vg_c74562fedbcf8ea46923918cf3ac8958 PV Size <2.73 TiB / not usable 130.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 715223 Free PE 714705 Allocated PE 518 PV UUID cyZ6Ur-HIiQ-tREG-Ueb9-ZKBK-4Wkx-Pgc7FE [root@glusterfs-node-1 ~]# lvdisplay --- Logical volume --- LV Name tp_0524f0ec9f3ab36e11a06320c6a1afa2 VG Name vg_c74562fedbcf8ea46923918cf3ac8958 LV UUID jpG0fi-SvNf-Tufz-IEn8-VSBi-ChTf-t54IEN LV Write Access read/write (activated read only) LV Creation host, time glusterfs-node-1, 2022-03-03 07:20:45 +0530 LV Pool metadata tp_0524f0ec9f3ab36e11a06320c6a1afa2_tmeta LV Pool data tp_0524f0ec9f3ab36e11a06320c6a1afa2_tdata LV Status available # open 2 LV Size 2.00 GiB Allocated pool data 0.70% Allocated metadata 10.32% Current LE 512 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:6 --- Logical volume --- LV Path /dev/vg_c74562fedbcf8ea46923918cf3ac8958/brick_7bb72d28b432248bcf9de23346d9ea3d LV Name brick_7bb72d28b432248bcf9de23346d9ea3d VG Name vg_c74562fedbcf8ea46923918cf3ac8958 LV UUID gsvc2l-JDHA-0L0e-oeNE-N0hY-p1Zd-aGAXo4 LV Write Access read/write LV Creation host, time glusterfs-node-1, 2022-03-03 07:20:45 +0530 LV Pool name tp_0524f0ec9f3ab36e11a06320c6a1afa2 LV Status available # open 1 LV Size 2.00 GiB Mapped size 0.70% Current LE 512 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:8 [root@glusterfs-node-1 ~]# vgdisplay --- Volume group --- VG Name vg_c74562fedbcf8ea46923918cf3ac8958 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 22 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size <2.73 TiB PE Size 4.00 MiB Total PE 715223 Alloc PE / Size 518 / 2.02 GiB Free PE / Size 714705 / <2.73 TiB VG UUID ImSA9l-xtcY-q1ol-ERmA-kDtc-xGs5-6MIgNW ##节点三 [root@glusterfs-node-2 ~]# pvdisplay --- Physical volume --- PV Name /dev/sdb VG Name vg_96fce8c076ca08f24c256e12e8cbbde0 PV Size <2.73 TiB / not usable 130.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 715223 Free PE 714705 Allocated PE 518 PV UUID cA2GW7-1EoO-w00U-8OKT-qZtF-J7xK-dRaqwd [root@glusterfs-node-2 ~]# vgdisplay --- Volume group --- VG Name vg_96fce8c076ca08f24c256e12e8cbbde0 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 22 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size <2.73 TiB PE Size 4.00 MiB Total PE 715223 Alloc PE / Size 518 / 2.02 GiB Free PE / Size 714705 / <2.73 TiB VG UUID PbEPjn-8zn6-wQjF-1Uvq-qaTv-aQ1J-BJFtZu [root@glusterfs-node-2 ~]# lvdisplay --- Logical volume --- LV Name tp_be0ace1a68127b0537199b654c521b2b VG Name vg_96fce8c076ca08f24c256e12e8cbbde0 LV UUID nETAXU-HVYn-JZHq-afwh-2W74-YMZ4-m26xyw LV Write Access read/write (activated read only) LV Creation host, time glusterfs-node-2, 2022-03-03 09:51:14 +0800 LV Pool metadata tp_be0ace1a68127b0537199b654c521b2b_tmeta LV Pool data tp_be0ace1a68127b0537199b654c521b2b_tdata LV Status available # open 2 LV Size 2.00 GiB Allocated pool data 0.70% Allocated metadata 10.32% Current LE 512 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:6 --- Logical volume --- LV Path /dev/vg_96fce8c076ca08f24c256e12e8cbbde0/brick_be0ace1a68127b0537199b654c521b2b LV Name brick_be0ace1a68127b0537199b654c521b2b VG Name vg_96fce8c076ca08f24c256e12e8cbbde0 LV UUID yXhTeX-4r7D-5rcE-rqKw-8NZb-z158-fchMLq LV Write Access read/write LV Creation host, time glusterfs-node-2, 2022-03-03 09:51:15 +0800 LV Pool name tp_be0ace1a68127b0537199b654c521b2b LV Status available # open 1 LV Size 2.00 GiB Mapped size 0.70% Current LE 512 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:8 -
删除卷
[root@glusterfs-node-0 heketi]# heketi-cli volume delete 951523a39e6d926764984279dbd7e4bc
k8s集群的调用（两种方式）
命令行手动配置(方式一)
- 所有的k8s节点均安装glusterfs客户端，以保证正常挂载
[root@k8s-master-0 ~]# yum install glusterfs-fuse -y
- 创建secret，heketi的认证密码,或者在kebesphere平台添加密钥,key的值,使用base64转码生成
echo -n "admin@P@ssW0rd" | base64这里的用户名密码为heketi配置文件中创建的用户密码
[root@k8s-master-1 ~]# vi heketi_secret.yaml
apiVersion: v1
kind: Secret
metadata:
name: heketi-secret
namespace: kube-system
data:
key: YWRtaW5AUEBzc1cwcmQ=
type: kubernetes.io/glusterfs
[root@k8s-master-1 ~]# kubectl apply -f heketi_secret.yaml
- 创建storageclass
[root@k8s-master-1 ~]# vi heketi-storageclass.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: glusterfs
namespace: kube-system
parameters:
resturl: "http://192.168.10.1:48080" #heketi的地址
clusterid: "b89a07c2c6e8c533322591bf2a4aa613" #在heketi节点使用heketi-cli cluster list命令返回的集群id
restauthenabled: "true"
restuser: "admin" #heketi配置文件中创建的用户密
secretName: "heketi-secret" #与secret资源中定义一致
secretNamespace: "kube-system" #与secret资源中定义一致
volumetype: "replicate:3"
provisioner: kubernetes.io/glusterfs
reclaimPolicy: Delete
[root@k8s-master-1 ~]# kubectl apply -f heketi-storageclass.yaml
- 创建pvc测试
[root@k8s-master-1 ~]# vi heketi-pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: heketi-pvc
annotations:
volume.beta.kubernetes.io/storage-provisioner: kubernetes.io/glusterfs
spec:
storageClassName: "glusterfs"
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gi
[root@k8s-master-1 ~]# kubectl apply -f heketi-pvc.yaml
- 查看sc和pvc的信息
[root@k8s-master-1 ~]# kubectl get sc
[root@k8s-master-1 ~]# kubectl get pvc
- 创建Pod挂载pvc
[root@k8s-master-1 ~]# vi heketi-pod.yaml
kind: Pod
apiVersion: v1
metadata:
name: heketi-pod
spec:
containers:
- name: heketi-container
image: busybox
command:
- sleep
- "3600"
volumeMounts:
- name: heketi-volume
mountPath: "/pv-data"
readOnly: false
volumes:
- name: heketi-volume
persistentVolumeClaim:
claimName: heketi-pvc
[root@k8s-master-1 ~]# kubectl apply -f heketi-pod.yaml
- 查看POD状态,若状态为runing，则挂载成功
[root@k8s-master-1 ~]# kubectl get pod
NAME READY STATUS RESTARTS AGE
heketi-pod 1/1 Running 0 4s
#清理测试pod
[root@k8s-master-1 ~]# kubectl delete -f heketi-pod.yaml
kubesphere界面配置(方式二)
- 创建密钥
- 平台管理->配置中心->密钥->创建
- 名称：heketi-secret
- 项目：kube-system
- 类型选择默认
- 键：key
- 值：YWRtaW5AUEBzc1cwcmQ=
- 创建存储类型
- 存储名称：glusterfs
- 存储类型：glusterfs
- 创建存储类型的详细信息
- 允许 存储卷扩容：是
- 支持的访问模式：ReadWriteOnce、ReadOnlyMany、ReadWriteMany
- 存储系统：kubernetes.io/glusterfs
- resturl：192.168.10.1:48080 （heketi的访问地址）
- clusterid：b89a07c2c6e8c533322591bf2a4aa613（heketi-cli cluster list命令返回的集群id ）
- restauthenabled：true
- restuser：admin (heketi服务的admin用户)
- secretNamespace：kube-system
- secretName：heketi-secret （上方创建的secert名称）
- volumetype：replicate:3
- 查看存储类型是否创建成功
- 创建存储卷进行测试
- 名称：test （可自定义）
- 项目：kube-system （可自定义）
- 存储类型选择glusterfs
- 状态为准备就绪即为成功
参考文档
- GlusterFS
- https://github.com/heketi/heketi
开源、云原生的融合云平台
更多推荐
0
0- 0
已为社区贡献4条内容
所有评论(0)