Centos7 ceph集群安装 cephfs客户端挂载 java代码调用
2024-05-13 08:04:14
Centos7 ceph集群安装 cephfs客户端挂载 java代码调用
ceph简介（http://docs.ceph.org.cn/ 官方文档）
ceph分为ceph monitor,ceph manager(管理器)，ceph ODS(对象存储守护进程)，ceph MDS(元数据服务器)用于存储文件ceph安装部署
2.1部署环境
| IP | 安装服务 | 内核 | 主机名 |
|---|---|---|---|
| 192.168.198.129 | admin-note | centos7 | admin-note |
| 192.168.198.130 | osd | centos7 | note2 |
| 192.168.198.131 | osd | centos7 | note3 |
| 192.168.198.132 | osd,mds | centos7 | note4 |
2.2关闭selinux和防火墙（所有节点）
#关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
#关闭selinux
setenforce 0
sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config
2.3设置时间同步（所有节点）
# yum 安装 ntp
yum install ntp ntpdate ntp-doc
# 校对系统时钟
ntpdate 0.cn.pool.ntp.org
2.3修改主机名和hosts文件（所有节点）
#192.168.198.129上操作
hostnamectl set-hostname admin-node
#192.168.198.130上操作
hostnamectl set-hostname node2
#192.168.198.131上操作
hostnamectl set-hostname node3
#192.168.198.132上操作
hostnamectl set-hostname node4
#所有节点上操作
vi /etc/hosts
#将以下内容增加到/etc/hosts中
192.168.198.129 admin-node
192.168.198.130 node2
192.168.198.131 node3
192.168.198.132 node4
#设置yum源
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backupwget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.reposed -i -e '/mirrors.cloud.aliyuncs.com/d' -e '/mirrors.aliyuncs.com/d' /etc/yum.repos.d/CentOS-Base.repo
yum makecache && yum update -y2.4创建 Ceph 部署用户并设置其远程登录密码（所有节点）
# 创建 ceph 特定用户
useradd -d /home/cephd -m cephd
echo cephd | passwd cephd --stdin
# 添加 sudo 权限
echo "cephd ALL = (root) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/cephd
chmod 0440 /etc/sudoers.d/cephd
# node1、node2、node3上操作，设置cephd用户的远程登录密码，记住此密码，后面配置免密登录会用到
passwd cephd
2.5配置免密登录（admin-node节点）
# 切换到cephd用户
su cephd
# 生成ssh密钥，一路回车即可
sudo ssh-keygen
# 将公钥复制到 node1 节点，输入cephd的用户密码即可
sudo ssh-copy-id node1
# 将公钥复制到 node2 节点，输入cephd的用户密码即可
sudo ssh-copy-id node2
# 将公钥复制到 node3 节点，输入cephd的用户密码即可
sudo ssh-copy-id node3
2.6Ceph集群搭建（ceph version 10.2.11）（admin-note）
配置ceph源
# yum 配置其他依赖包
sudo yum install -y yum-utils && sudo yum-config-manager --add-repo https://dl.fedoraproject.org/pub/epel/7/x86_64/ && sudo yum install --nogpgcheck -y epel-release && sudo rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 && rm /etc/yum.repos.d/dl.fedoraproject.org*
# 添加 Ceph 源
sudo vi /etc/yum.repos.d/ceph.repo
[ceph]
name=ceph
baseurl=http://mirrors.aliyun.com/ceph/rpm-jewel/el7/x86_64/
gpgcheck=0
[ceph-noarch]
name=cephnoarch
baseurl=http://mirrors.aliyun.com/ceph/rpm-jewel/el7/noarch/
gpgcheck=0
安装
sudo yum update && sudo yum install ceph-deploy
2.7修改 ceph-deploy 管理节点上的 ~/.ssh/config 文件，这样无需每次执行 ceph-deploy 都要指定 –username cephd（admin-node）
sudo vi ~/.ssh/config
Host admin-noteHostname admin-noteUser cephd
Host note2Hostname note2User cephd
Host note3Hostname note3User cephd
Host note4Hostname note4User cephd
sudo chmod 600 ~/.ssh/config
2.8创建集群 （admin-note）(1)创建集群(在管理节点master上)
# 创建执行目录
sudo mkdir /home/cephd/ceph-cluster && cd /home/cephd/ceph-cluster
# 创建集群 mon节点
sudo ceph-deploy new admin-note
(2)把 Ceph 配置文件里的默认副本数从 3 改成 2 ，这样只有两个 OSD 也可以达到 active + clean 状态
sudo vim /home/ceph/my-cluster/ceph.conf 添加如下内容:
osd pool default size = 2
(3)安装ceph（admin-node）
sudo ceph-deploy install admin-note note2 note3
(4)初始化 monitor 节点并收集所有密钥（admin-node）
sudo ceph-deploy --overwrite-conf mon create-initial
(5)添加osd进程添加两个 OSD 。为了快速地安装，这篇快速入门把目录而非整个硬盘用于 OSD 守护进程。登录到 Ceph 节点、并给 OSD 守护进程创建一个目录。在这里插入代码片
创建osd0的工作目录 (在note2节点上)
sudo mkdir /var/local/osd0
创建osd1的工作目录 (在note3节点上)
sudo mkdir /var/local/osd1
准备OSD (在admin-note节点上)
sudo ceph-deploy osd prepare note2:/var/local/osd0 note3:/var/local/osd1
激活OSD (master节点)
sudo ceph-deploy osd activate note2:/var/local/osd0 note3:/var/local/osd1#重启osd systemctl restart ceph-mon@note2.service#查看状态 ceph osd tree```(6)用 ceph-deploy 把配置文件和 admin 密钥拷贝到管理节点和 Ceph 节点，这样你每次执行 Ceph 命令行时就无需指定 monitor 地址和 ceph.client.admin.keyring 了 (master节点执行)```java
sudo ceph-deploy admin admin-note note2 note3
#添加操作权限
sudo sudo chmod +r /etc/ceph/ceph.client.admin.keyring
#检查健康状态
sudo ceph health
- cephfs部署挂载
3.1部署
（1）安装mds(admin-note)
sudo ceph-deploy mds create note2
(2）创建储存池(note2)
sudo ceph osd pool create cephfs_data 128
#pool 'cephfs_data' created
sudo ceph osd pool create cephfs_metadata 128
#pool 'cephfs_metadata' created
#使用fs new命令enable 文件系统
sudo ceph fs new cephfs cephfs_metadata cephfs_data
#查看cephfs信息
sudo ceph fs ls
#查看cephfs状态
sudo ceph mds stat
3.2挂载cephfs
Cephfs有两种挂载方式：kernel或fuse
（1）kernel内核挂载
#创建挂载目录
sudo mkdir /mnt/mycephfs
#创建保存admin密钥文件
sudo vi admin.secret
#挂载
sudo mount -t ceph 192.168.198.129:6789:/ /mnt/mycephfs -o name=admin,secretfile=/root/admin.secret
#查看挂载df -Th | grep cephfs
（2）fuse挂载
#先取消之前的挂载
umount /mnt/mycephfs/
#下载工具包
sudo yum -y install ceph-fuse
mkdir ~/mycephfs
#新建用户
ceph auth get-or-create client.george mon 'allow r' osd 'allow rw pool=ceph_data' -o george.keyring#用户权限修改
ceph auth caps client.test mon 'allow rw' osd 'allow rwx' mds 'allow rw path=/test'ceph-fuse -n client.test -m 192.168.198.129:6789 /mnt/mycephfs1/ -r /test```（3）设置开机自动挂载/etc/fstab
```java
id=admin,conf=/etc/ceph/ceph.conf /mnt fuse.ceph defaults 0 0
4.对象存储安装部署
4.1创建网关(admin-note)
```powershell
ceph-deploy rgw create note3
http://client-node:7480
ss -ntl | grep 7480
Civetweb 默认运行在端口 7480 之上.。如果想修改这个默认端口 (比如使用端口 80)比如, 如果你的主机名是 gateway-node1， 在 [global] 节后添加的节名如下:
[client.rgw.gateway-node1]
rgw_frontends = "civetweb port=80"
将该配置文件推送到你的 Ceph 对象网关节点(也包括其他 Ceph 节点):ceph-deploy --overwrite-conf config push <gateway-node> [<other-nodes>]
为了使新配置的端口生效，需要重启 Ceph 对象网关:sudo systemctl restart ceph-radosgw.service4.2使用网关（1）为了使用 REST 接口，首先需要为S3接口创建一个初始 Ceph 对象网关用户。然后，为 Swift 接口创建一个子用户。然后你需要验证创建的用户是否能够访问网关。为 S3 访问创建 RADOSGW 用户
一个``radosgw`` 用户需要被新建并被分配权限。命令 man radosgw-admin 会提供该命令的额外信息。为了新建用户，在 gateway host 上执行下面的命令:```powershell
sudo radosgw-admin user create --uid="testuser" --display-name="First User"
（2）新建一个 SWIFT 用户如果你想要使用这种方式访问集群，你需要新建一个 Swift 子用户。创建 Swift 用户包括两个步骤。第一步是创建用户。第二步是创建 secret key。在``gateway host`` 上执行喜爱按的步骤:新建 Swift 用户:
sudo radosgw-admin subuser create --uid=testuser --subuser=testuser:swift --access=full
#新建key
sudo radosgw-admin key create --subuser=testuser:swift --key-type=swift --gen-secret
#查看用户
sudo radosgw-admin user info --uid testuser
4.3访问验证(1)s3访问为了验证 S3 访问，你需要编写并运行一个 Python 测试脚本。S3 访问测试脚本将连接 radosgw, 新建一个新的 bucket 并列出所有的 buckets。 aws_access_key_id 和 aws_secret_access_key 的值来自于命令``radosgw_admin`` 的返回值 access_key 和 secret_key 。
执行下面的步骤:
1.你需要安装 python-boto 包:
sudo yum install python-boto
2.新建 Python 脚本文件:
vi s3test.py
3.将下面的内容添加到文件中:
import boto
import boto.s3.connection
access_key = 'I0PJDPCIYZ665MW88W9R'
secret_key = 'dxaXZ8U90SXydYzyS5ivamEP20hkLSUViiaR+ZDA'
conn = boto.connect_s3(aws_access_key_id = access_key,aws_secret_access_key = secret_key,host = '{hostname}', port = {port},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,)
将 {hostname} 替换为你配置了网关服务的节点的主机名。比如 gateway host. 将 {port} 替换为 Civetweb 所使用的端口。
4.运行脚本:
python s3test.py
输出类似下面的内容:
my-new-bucket 2015-02-16T17:09:10.000Z
（2）测试 SWIFT 访问
Swift 访问的验证则可以使用swift 的命令行客户端。可以通过命令 man swift 获取更多命令行选项的更多信息。
执行下面的命令安装 swift 客户端，在 Red Hat Enterprise Linux上执行:
sudo yum install python-setuptools
sudo easy_install pip
##未找到pip
curl https://bootstrap.pypa.io/pip/2.7/get-pip.py -o get-pip.py
sudo python get-pip.py
#替换 上一个命令sudo pip install --upgrade setuptools
sudo pip install --upgrade python-swiftclient#swift调用
swift -A http://{IP ADDRESS}:{port}/auth/1.0 -U testuser:swift -K '{swift_secret_key}' list- java代码调用
5.1 java代码调用 cephfs
(1)maven引入jar包
<dependency><groupId>com.ceph</groupId><artifactId>libcephfs</artifactId><version>0.80.5</version></dependency><!-- https://mvnrepository.com/artifact/com.ceph/rados --><dependency><groupId>com.ceph</groupId><artifactId>rados</artifactId><version>0.3.0</version></dependency>
package com.ctsi.config;import com.ceph.fs.CephFileExtent;
import com.ceph.fs.CephMount;
import com.ceph.fs.CephStat;
import lombok.SneakyThrows;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.io.*;
import java.util.Arrays;
public class CephOperateConfig {private CephMount mount;private String username;private String monIp;private String userKey;public CephOperateConfig(String username, String monIp, String userKey, String mountPath) {this.username = username;this.monIp = monIp;this.userKey = userKey;this.mount = new CephMount(username);this.mount.conf_set("mon_host", monIp);mount.conf_set("key",userKey);mount.mount(mountPath);}@SneakyThrowspublic static void main(String[] args) {String name="client.devops-test";String key="AQD6a8deA0aFKxAAGJRBBnHFCikG7hIxHUbYVA==";String ip="10.2.2.6,10.2.2.7,10.2.2.8,10.2.2.9,10.2.2.10";String path="/data/cephfs/blockchain/";CephOperateConfig cephOperateConfig=new CephOperateConfig(name,ip,key,path);cephOperateConfig.listDir(path);}//查看目录列表public void listDir(String path) throws IOException {String[] dirs = mount.listdir(path);System.out.println("contents of the dir: " + Arrays.asList(dirs));}//新建目录public void mkDir(String path) throws IOException {mount.mkdirs(path,0755);//0表示十进制}//删除目录public void delDir(String path) throws IOException {mount.rmdir(path);}//重命名目录or文件public void renameDir(String oldName, String newName) throws IOException {mount.rename(oldName, newName);}//删除文件public void delFile(String path) throws IOException {mount.unlink(path);}//读文件public void readFile(String path) {System.out.println("start read file...");int fd = -1;try{fd = mount.open(path, CephMount.O_RDWR, 0755);System.out.println("file fd is : " + fd);byte[] buf = new byte[1024];long size = 10;long offset = 0;long count = 0;while((count = mount.read(fd, buf, size, offset)) > 0){for(int i = 0; i < count; i++){System.out.print((char)buf[i]);}offset += count;}} catch (IOException e){e.printStackTrace();} finally {if(fd > 0){mount.close(fd);}}}//复制文件public void copyFile(String sourceFile, String targetFile){System.out.println("start write file...");int readFD = -1, createAA = -1, writeFD = -1;try{readFD = mount.open(sourceFile, CephMount.O_RDWR, 0755);writeFD = mount.open(targetFile, CephMount.O_RDWR | CephMount.O_CREAT, 0644);
// createAA = mountLucy.open("aa.txt", CephMount.O_RDWR | CephMount.O_CREAT | CephMount.O_EXCL, 0644);//若文件已有， 会异常System.out.println("file read fd is : " + readFD);byte[] buf = new byte[1024];long size = 10;long offset = 0;long count = 0;while((count = mount.read(readFD, buf, size, -1)) > 0){mount.write(writeFD, buf, count, -1);//-1指针跟着走，若取值count，指针不动System.out.println("offset: " + offset);offset += count;System.out.println("writeFD position : " + mount.lseek(writeFD, 0, CephMount.SEEK_CUR));}} catch (IOException e){e.printStackTrace();} finally {if(readFD > 0){mount.close(readFD);}if(writeFD > 0){mount.close(writeFD);}}}//写文件public void writeFileWithLseek(String path, long offset, int type){if(type <= 0){type =CephMount.SEEK_CUR;}System.out.println("start write file...");int writeFD = -1;try{writeFD = mount.open(path, CephMount.O_RDWR | CephMount.O_APPEND, 0644);long pos = mount.lseek(writeFD, offset, type);System.out.println("pos : " + pos);String msg = " asdfasdfasdf123123123 \n";byte[] buf = msg.getBytes();mount.write(writeFD, buf, buf.length, pos);} catch (IOException e){e.printStackTrace();} finally {if(writeFD > 0){mount.close(writeFD);}}}// 判断是目录还是文件public void listFileOrDir(){int writeFD = -1;try{String[] lucyDir = mount.listdir("/");for(int i = 0; i < lucyDir.length; i++){CephStat cephStat = new CephStat();mount.lstat(lucyDir[i], cephStat);System.out.println(lucyDir[i] + " is dir : " + cephStat.isDir()+ " is file: " + cephStat.isFile()+ " size: " + cephStat.size+ " blksize: " + cephStat.blksize);//cephStat.size就是文件大小}writeFD = mount.open("lucy1.txt", CephMount.O_RDWR | CephMount.O_APPEND, 0644);CephFileExtent cephFileExtent = mount.get_file_extent(writeFD, 0);System.out.println("lucy1.txt size: " + cephFileExtent.getLength());//4MSystem.out.println("lucy1.txt stripe unit: " + mount.get_file_stripe_unit(writeFD));//4Mlong pos = mount.lseek(writeFD, 0, CephMount.SEEK_END);System.out.println("lucy1.txt true size: " + pos);//30Byte} catch (IOException e){e.printStackTrace();} finally {if(writeFD > 0){mount.close(writeFD);}}}//set current dir (work dir)public void setWorkDir(String path) throws IOException {mount.chdir(path);}//外部获取mountpublic CephMount getMount(){return this.mount;}//umountpublic void umount(){mount.unmount();}public Boolean uploadFileByPath(String filePath, String fileName){// exit with null if not mountif (this.mount == null){return null;}// file definitionchar pathChar = File.separatorChar;String fileFullName = "";Long fileLength = 0l;Long uploadedLength = 0l;File file = null;// IoFileInputStream fis = null;// get local file infofileFullName = filePath + pathChar + fileName;file = new File(fileFullName);if (!file.exists()){return false;}fileLength = file.length();// get io from local filetry {fis = new FileInputStream(file);}catch (FileNotFoundException e){e.printStackTrace();}// if file exists or notString[] dirList = null;Boolean fileExist = false;try {dirList = this.mount.listdir("/");for (String fileInfo : dirList){if (fileInfo.equals(fileName)){fileExist = true;}}}catch (FileNotFoundException e){e.printStackTrace();}// transfer file by diff patternif (!fileExist){try {// create file and set mode WRITEthis.mount.open(fileName, CephMount.O_CREAT, 0);int fd = this.mount.open(fileName, CephMount.O_RDWR, 0);// start transferint length = 0;byte[] bytes = new byte[1024];while ((length = fis.read(bytes, 0, bytes.length)) != -1){// writethis.mount.write(fd, bytes, length, uploadedLength);// update lengthuploadedLength += length;// output transfer ratefloat rate = (float)uploadedLength * 100 / (float)fileLength;String rateValue = (int)rate + "%";System.out.println(rateValue);// complete flagif (uploadedLength == fileLength){break;}}System.out.println("文件传输成功！");// chmodthis.mount.fchmod(fd, 0666);// closethis.mount.close(fd);if (fis != null){fis.close();}return true;}catch (Exception e){e.printStackTrace();}}else if (fileExist){try {// get file lengthCephStat stat = new CephStat();this.mount.stat(fileName, stat);uploadedLength = stat.size;int fd = this.mount.open(fileName, CephMount.O_RDWR, 0);// start transferint length = 0;byte[] bytes = new byte[1024];fis.skip(uploadedLength);while ((length = fis.read(bytes, 0, bytes.length)) != -1){// writethis.mount.write(fd, bytes, length, uploadedLength);// update lengthuploadedLength += length;// output transfer ratefloat rate = (float)uploadedLength * 100 / (float)fileLength;String rateValue = (int)rate + "%";System.out.println(rateValue);// complete flagif (uploadedLength == fileLength){break;}}System.out.println("断点文件传输成功！");// chmodthis.mount.fchmod(fd, 0666);// closethis.mount.close(fd);if (fis != null){fis.close();}return true;}catch (Exception e){e.printStackTrace();}}else {try {if (fis != null){fis.close();}}catch (Exception e){e.printStackTrace();}return false;}return false;}//文件下载public Boolean downLoadFileByPath(String filePath,String fileName){char pathChar= File.separatorChar;String fileFullName="";Long fileLength=0L;Long downloadedLength=0L;File file=null;//IOFileOutputStream fos=null;RandomAccessFile raf=null;//new file objectfileFullName=filePath+pathChar+fileName;file=new File(fileFullName);//get cephfs file sizetry{CephStat stat=new CephStat();mount.stat(fileName,stat);fileLength=stat.size;}catch (Exception e){e.printStackTrace();}if(fileLength!=0){if(!file.exists()){int length=10240;byte[] bytes=new byte[length];try {int fd=mount.open(fileName,CephMount.O_RDONLY,0);fos=new FileOutputStream(file);float rate=0;String rateValue="";while ((fileLength-downloadedLength)>=length&&(mount.read(fd,bytes,(long)length,downloadedLength))!=-1){fos.write(bytes,0,length);fos.flush();downloadedLength+=(long)length;rate=(float)downloadedLength*100/(float)fileLength;rateValue=(int)rate+"%";System.out.println(rateValue);if(downloadedLength.equals(fileLength)){break;}}if(!downloadedLength.equals(fileLength)){mount.read(fd,bytes,fileLength-downloadedLength,downloadedLength);fos.write(bytes,0,(int)(fileLength-downloadedLength));fos.flush();downloadedLength=fileLength;rate=(float)downloadedLength*100/(float)fileLength;rateValue=(int)rate+"%";System.out.println(rateValue);}System.out.println("Download Successs");fos.close();mount.close(fd);return true;} catch (Exception e) {System.out.println("download fail");e.printStackTrace();}}else if(file.exists()){int length=10240;byte[] bytes=new byte[length];Long filePoint=file.length();try {int fd=mount.open(fileName,CephMount.O_RDONLY,0);raf=new RandomAccessFile(file,"rw");raf.seek(filePoint);float rate=0;String rateValue="";while ((fileLength-downloadedLength)>=length&&(mount.read(fd,bytes,(long)length,downloadedLength))!=-1){raf.write(bytes,0,length);downloadedLength+=(long)length;rate=(float)downloadedLength*100/(float)fileLength;rateValue=(int)rate+"%";System.out.println(rateValue);if(downloadedLength.equals(fileLength)){break;}}if(!downloadedLength.equals(fileLength)){mount.read(fd,bytes,fileLength-downloadedLength,downloadedLength);raf.write(bytes,0,(int)(fileLength-downloadedLength));downloadedLength=fileLength;rate=(float)downloadedLength*100/(float)fileLength;rateValue=(int)rate+"%";System.out.println(rateValue);}System.out.println("Download Successs");raf.close();mount.close(fd);return true;} catch (Exception e) {System.out.println("download fail");e.printStackTrace();}}}else{System.out.println("err");return false;}return null;}}5.2 java s3 调用osd对象存储bucket
1.maven引入jar
<dependencyManagement><dependencies><dependency><groupId>com.amazonaws</groupId><artifactId>aws-java-sdk-bom</artifactId><version>1.11.327</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><dependency><groupId>com.amazonaws</groupId><artifactId>aws-java-sdk-ec2</artifactId></dependency><dependency><groupId>com.amazonaws</groupId><artifactId>aws-java-sdk-s3</artifactId></dependency><dependency><groupId>com.amazonaws</groupId><artifactId>aws-java-sdk-dynamodb</artifactId></dependency>
2java代码调用
String accessKey = "S88OUVF7WC551YUJN1I4";String secretKey = "BUaVeXZ2HgDYNjIOIVhMJROdG1Z3vFkaYnQjlntw";AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);AmazonS3 conn = new AmazonS3Client(credentials);conn.setEndpoint("objects.dreamhost.com");List<Bucket> buckets = conn.listBuckets();for (Bucket bucket : buckets) {ByteArrayInputStream input = new ByteArrayInputStream("Hello World!".getBytes());conn.putObject(bucket.getName(), "hello.txt", input, new ObjectMetadata());System.out.println(bucket.getName() + "\t" +StringUtils.fromDate(bucket.getCreationDate()));ObjectListing objects = conn.listObjects(bucket.getName());do {for (S3ObjectSummary objectSummary : objects.getObjectSummaries()) {System.out.println(objectSummary.getKey() + "\t" +objectSummary.getSize() + "\t" +StringUtils.fromDate(objectSummary.getLastModified()));}objects = conn.listNextBatchOfObjects(objects);} while (objects.isTruncated());}
参考资料
参考博客
ceph官网
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