一男一女做那个的动漫视频网站,学会网站开发需要多久,国外推广渠道有哪些方式,有经验的郑州网站建设1、环境介绍SCSI(Small Computer System Interface)是块数据传输协议#xff0c;在存储行业广泛应用#xff0c;是存储设备最基本的标准协议。从根本上说#xff0c;iSCSI协议是一种利用IP网络来传输潜伏时间短的SCSI数据块的方法#xff0c;ISCSI使用以太网协议传送SCSI命…1、环境介绍SCSI(Small Computer System Interface)是块数据传输协议在存储行业广泛应用是存储设备最基本的标准协议。从根本上说iSCSI协议是一种利用IP网络来传输潜伏时间短的SCSI数据块的方法ISCSI使用以太网协议传送SCSI命令、响应和数据。ISCSI可以用我们已经熟悉和每天都在使用的以太网来构建IP存储局域网。通过这种方法ISCSI克服了直接连接存储的局限性使我们可以跨不同服务器共享存储资源并可以在不停机状态下扩充存储容量。所需软件与软件结构CentOS 将 tgt 的软件名称定义为 scsi-target-utils 因此你得要使用 yum 去安装他才行。至于用来作为 initiator 的软件则是使用 linux-iscsi 的项目该项目所提供的软件名称则为 iscsi-initiator-utils 。所以总的来说你需要的软件有scsi-target-utils用来将 Linux 系统仿真成为 iSCSI target 的功能iscsi-initiator-utils挂载来自 target 的磁盘到 Linux 本机上。那么 scsi-target-utils 主要提供哪些档案呢基本上有底下几个比较重要需要注意的/etc/tgt/targets.conf主要配置文件设定要分享的磁盘格式与哪几颗/usr/sbin/tgt-admin在线查询、删除 target 等功能的设定工具/usr/sbin/tgt-setup-lun建立 target 以及设定分享的磁盘与可使用的客户端等工具软件。/usr/sbin/tgtadm手动直接管理的管理员工具 (可使用配置文件取代)/usr/sbin/tgtd主要提供 iSCSI target 服务的主程序/usr/sbin/tgtimg建置预计分享的映像文件装置的工具 (以映像文件仿真磁盘)这次的实验结构(sdx1、sdy1是物理的磁盘通过lun连接到target虚拟的共享块在客户端挂载这个块。这里我们添加一块硬盘sdb创建sdb1(400m)和sdb2(500m))2、server端配置添加一块磁盘后复查一下[root100 ~]# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTsda 8:0 0 60G 0 disk├─sda1 8:1 0 500M 0 part /boot└─sda2 8:2 0 59.5G 0 part├─rhel-swap 253:0 0 2G 0 lvm [SWAP]├─rhel-root 253:1 0 38.6G 0 lvm /└─rhel-home 253:2 0 18.9G 0 lvm /homesdb 8:16 0 10G 0 disk├─sdb1 8:17 0 400M 0 part└─sdb2 8:18 0 500M 0 partsr0 11:0 1 3.6G 0 rom /dvd安装target并加入开机自启动yum install -y target*systemctl start targetsystemctl enable target配置target的ctl将sdb1和sdb2共享出去(一)、block关联磁盘[root100 ~]# targetclitargetcli shell version 2.1.fb37Copyright 2011-2013 by Datera, Inc and others.For help on commands, type help./ /backstores/block create block1 /dev/sdb/dev/sdb /dev/sdb1 /dev/sdb2...................................dev/ /backstores/block create block1 /dev/sdb1Created block storage object block1 using /dev/sdb1./ /backstores/block create block2 /dev/sdb2Created block storage object block2 using /dev/sdb2./ lso- / ..................................................................... [...]o- backstores .......................................................... [...]| o- block .............................................. [Storage Objects: 2]| | o- block1 .................. [/dev/sdb1 (400.0MiB) write-thru deactivated]#新建的block| | o- block2 .................. [/dev/sdb2 (500.0MiB) write-thru deactivated]#新建的block| o- fileio ............................................. [Storage Objects: 0]| o- pscsi .............................................. [Storage Objects: 0]| o- ramdisk ............................................ [Storage Objects: 0]o- iscsi ........................................................ [Targets: 0]o- loopback ..................................................... [Targets: 0]/(二)、创建target/ /iscsi create iqn.2018-10.20.com:diskCreated target iqn.2018-10.20.com:disk.Created TPG 1.Global pref auto_add_default_portaltrueCreated default portal listening on all IPs (0.0.0.0), port 3260./ lso- / ..................................................................... [...]o- backstores .......................................................... [...]| o- block .............................................. [Storage Objects: 2]| | o- block1 .................. [/dev/sdb1 (400.0MiB) write-thru deactivated]| | o- block2 .................. [/dev/sdb2 (500.0MiB) write-thru deactivated]| o- fileio ............................................. [Storage Objects: 0]| o- pscsi .............................................. [Storage Objects: 0]| o- ramdisk ............................................ [Storage Objects: 0]o- iscsi ........................................................ [Targets: 1] #这里是创建tartet的目录| o- iqn.2018-10.20.com:disk ....................................... [TPGs: 1]| o- tpg1 ........................................... [no-gen-acls, no-auth]| o- acls ...................................................... [ACLs: 0]| o- luns ...................................................... [LUNs: 0]| o- portals ................................................ [Portals: 1]| o- 0.0.0.0:3260 ................................................. [OK]o- loopback ..................................................... [Targets: 0](三)、创建lun关联block和target/ lso- / ..................................................................... [...]o- backstores .......................................................... [...]| o- block .............................................. [Storage Objects: 2]| | o- block1 .................. [/dev/sdb1 (400.0MiB) write-thru deactivated]| | o- block2 .................. [/dev/sdb2 (500.0MiB) write-thru deactivated]| o- fileio ............................................. [Storage Objects: 0]| o- pscsi .............................................. [Storage Objects: 0]| o- ramdisk ............................................ [Storage Objects: 0]o- iscsi ........................................................ [Targets: 1]| o- iqn.2018-10.20.com:disk ....................................... [TPGs: 1]| o- tpg1 ........................................... [no-gen-acls, no-auth]| o- acls ...................................................... [ACLs: 0]| o- luns ...................................................... [LUNs: 0]| o- portals ................................................ [Portals: 1]| o- 0.0.0.0:3260 ................................................. [OK]o- loopback ..................................................... [Targets: 0]/ iscsi/iqn.2018-10.20.com:disk/tpg1/acls create iqn.2018-10.20.com:xxCreated Node ACL for iqn.2018-10.20.com:xx/ lso- / ..................................................................... [...]o- backstores .......................................................... [...]| o- block .............................................. [Storage Objects: 2]| | o- block1 .................. [/dev/sdb1 (400.0MiB) write-thru deactivated]| | o- block2 .................. [/dev/sdb2 (500.0MiB) write-thru deactivated]| o- fileio ............................................. [Storage Objects: 0]| o- pscsi .............................................. [Storage Objects: 0]| o- ramdisk ............................................ [Storage Objects: 0]o- iscsi ........................................................ [Targets: 1]| o- iqn.2018-10.20.com:disk ....................................... [TPGs: 1]| o- tpg1 ........................................... [no-gen-acls, no-auth]| o- acls ...................................................... [ACLs: 1]| | o- iqn.2018-10.20.com:xx ............................ [Mapped LUNs: 0]| o- luns ...................................................... [LUNs: 0]| o- portals ................................................ [Portals: 1]| o- 0.0.0.0:3260 ................................................. [OK]o- loopback ..................................................... [Targets: 0]/ iscsi/iqn.2018-10.20.com:disk/tpg1/luns create //backstores/block/block1 /lib/ /sbin//backstores/block/block2 /lib64/ /srv//bin/ /media/ /sys//boot/ /mnt/ /tmp//dev/ /opt/ /usr//dvd/ /proc/ /var//etc/ /root//home/ /run/..................................................storage_object/ iscsi/iqn.2018-10.20.com:disk/tpg1/luns create /backstores/block/block/backstores/block/block1 /backstores/block/block2..................................................storage_object/ iscsi/iqn.2018-10.20.com:disk/tpg1/luns create /backstores/block/block1Created LUN 0.Created LUN 0-0 mapping in node ACL iqn.2018-10.20.com:xx/ iscsi/iqn.2018-10.20.com:disk/tpg1/luns create /backstores/block/block2Created LUN 1.Created LUN 1-1 mapping in node ACL iqn.2018-10.20.com:xx/ lso- / ..................................................................... [...]o- backstores .......................................................... [...]| o- block .............................................. [Storage Objects: 2]| | o- block1 .................... [/dev/sdb1 (400.0MiB) write-thru activated]| | o- block2 .................... [/dev/sdb2 (500.0MiB) write-thru activated]| o- fileio ............................................. [Storage Objects: 0]| o- pscsi .............................................. [Storage Objects: 0]| o- ramdisk ............................................ [Storage Objects: 0]o- iscsi ........................................................ [Targets: 1]| o- iqn.2018-10.20.com:disk ....................................... [TPGs: 1]| o- tpg1 ........................................... [no-gen-acls, no-auth]| o- acls ...................................................... [ACLs: 1] #添加了一条认证| | o- iqn.2018-10.20.com:xx ............................ [Mapped LUNs: 2]| | o- mapped_lun0 ............................ [lun0 block/block1 (rw)] #关联lun| | o- mapped_lun1 ............................ [lun1 block/block2 (rw)] #关联lun| o- luns ...................................................... [LUNs: 2]| | o- lun0 ................................... [block/block1 (/dev/sdb1)]| | o- lun1 ................................... [block/block2 (/dev/sdb2)]| o- portals ................................................ [Portals: 1]| o- 0.0.0.0:3260 ................................................. [OK]o- loopback ..................................................... [Targets: 0]/ exitGlobal pref auto_save_on_exittrueLast 10 configs saved in /etc/target/backup.Configuration saved to /etc/target/saveconfig.json至此服务器端就配置完了详细的配置可以到/etc/target/saveconfig.json修改3、client端配置(一)、安装iscsi*软件包 iscsi-initiator-utils-6.2.0.873-29.el7.x86_64软件包 iscsi-initiator-utils-iscsiuio-6.2.0.873-29.el7.x86_64[root200 ~]# yum install -y iscsi*(二)、加入开机自启[root200 ~]# systemctl restart iscsid.service[root200 ~]# systemctl enable iscsid.service(三)、做一个发现的操作发现服务器共享的target名字是什么[root200 ~]# iscsiadm -m discovery -t st -p 192.168.137.100192.168.137.100:3260,1 iqn.2018-10.20.com:diskm模式mode-discovery, discoverydb.t类型type must be sendtargets (or abbreviated as st), slp, isns or fw. Currently only sendtargets, fw, and iSNS is supported, see the DISCOVERY TYPES section.p是IPport(四)、查看发现的条目[root200 ~]# iscsiadm -m discovery -p 192.168.137.100# BEGIN RECORD 6.2.0.873-28discovery.startup manualdiscovery.type sendtargets #-t stdiscovery.sendtargets.address 192.168.137.100 #target服务端discovery.sendtargets.port 3260 #端口discovery.sendtargets.auth.authmethod None #认证没有discovery.sendtargets.auth.username discovery.sendtargets.auth.password discovery.sendtargets.auth.username_in discovery.sendtargets.auth.password_in discovery.sendtargets.timeo.login_timeout 15 #登录超时时间discovery.sendtargets.use_discoveryd No #没有使用这个发现discovery.sendtargets.discoveryd_poll_inval 30discovery.sendtargets.reopen_max 5discovery.sendtargets.timeo.auth_timeout 45discovery.sendtargets.timeo.active_timeout 30discovery.sendtargets.iscsi.MaxRecvDataSegmentLength 32768# END RECORD(五)、修改客户端的acl并登录[root200 ~]# iscsiadm -m node -T iqn.2018-10.20.com:disk -p 192.168.137.100 -lLogging in to [iface: default, target: iqn.2018-10.20.com:disk, portal: 192.168.137.100,3260] (multiple)Login to [iface: default, target: iqn.2018-10.20.com:disk, portal: 192.168.137.100,3260] successful.[root200 ~]# lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTsda 8:0 0 60G 0 disk├─sda1 8:1 0 500M 0 part /boot└─sda2 8:2 0 59.5G 0 part├─rhel-swap 253:0 0 2G 0 lvm [SWAP]├─rhel-root 253:1 0 38.6G 0 lvm /└─rhel-home 253:2 0 18.9G 0 lvm /homesdb 8:16 0 400M 0 disksdc 8:32 0 500M 0 disksr0 11:0 1 3.6G 0 rom /dvd[root200 ~]# cat /etc/iscsi/initiatorname.iscsi#InitiatorNameiqn.1994-05.com.redhat:949f18f9ce84InitiatorNameiqn.2018-10.20.com:xx ##刚才设置的acl条目注这个自动加载过来的磁盘重启之后是自动加载过来的4、客户端挂载iscsi的盘格式化sdb和sdc[root200 ~]# mkfs.xfs /dev/sdbmeta-data/dev/sdb isize256 agcount8, agsize12800 blks sectsz512 attr2, projid32bit1 crc0 finobt0data bsize4096 blocks102400, imaxpct25 sunit0 swidth0 blksnaming version 2 bsize4096 ascii-ci0 ftype0log internal log bsize4096 blocks853, version2 sectsz512 sunit0 blks, lazy-count1realtime none extsz4096 blocks0, rtextents0[root200 ~]# mkfs.xfs /dev/sdcmeta-data/dev/sdc isize256 agcount8, agsize16000 blks sectsz512 attr2, projid32bit1 crc0 finobt0data bsize4096 blocks128000, imaxpct25 sunit0 swidth0 blksnaming version 2 bsize4096 ascii-ci0 ftype0log internal log bsize4096 blocks853, version2 sectsz512 sunit0 blks, lazy-count1realtime none extsz4096 blocks0, rtextents0创建挂载点并挂载[root200 ~]# mkdir /sdb[root200 ~]# mkdir /sdc注如果需要实时同步的话需要使用gfs集群文件系统[root200 ~]# cat /etc/fstab |tail -n 4/dev/mapper/rhel-swap swap swap defaults 0 0/dev/cdrom /dvd iso9660 defaults 0 0/dev/sdb /sdb xfs _netdev 0 0 #添加的条目/dev/sdc /sdc xfs _netdev 0 0 #添加的条目[root200 ~]# # mount -a[root200 ~]# mount |tail -n 4gvfsd-fuse on /run/user/0/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id0,group_id0)fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)/dev/sdb on /sdb type xfs (rw,relatime,seclabel,attr2,inode64,noquota,_netdev)/dev/sdc on /sdc type xfs (rw,relatime,seclabel,attr2,inode64,noquota,_netdev)[root200 ~]#5、总结(一)、增加iscsi存储(1)发现iscsi存储:iscsiadm-m discovery -t st -p ISCSI_IP(2)查看iscsi发现记录:iscsiadm-m node(3)登录iscsi存储:iscsiadm-m node -T LUN_NAME -p ISCSI_IP -l(4)开机自动:iscsiadm -m node –T LUN_NAME -p ISCSI_IP --opupdate -n node.startup -vautomatic(二)、删除iscsi存储(1)登出iscsi存储iscsiadm -m node -T LUN_NAME -p ISCSI_IP -u(2)对出iscsi所有登录iscsiadm -m node --logoutallall(3)删除iscsi发现记录:iscsiadm-m node -o delete -T LUN_NAME -p ISCSI_IP
