centos6設置單節點iscsi
192.168.10.15 共享磁盤機器(只分區,不要格式化)
192.168.10.25 iscsi1
192.168.10.30 iscsi2
10.15
ll /dev/sd*
fdisk -l
fdisk /dev/sdb(新添加的硬盤)
yum install -y scsi*
vim /etc/tgt/targets.conf
<target iqn.2018-06.com.example.DNS:sdb1.2G>
backing-store /dev/sdb1 (共享磁盤路徑)
</target>
service tgtd start
chkconfig tgtd on
10.25和10.30
yum install -y iscsi*
iscsiadm -m discovery -t st -p 192.168.10.15
iscsiadm -m node -T iqn.2018-06.com.example.DNS:sdb1.2G -p 192.168.10.15 -l
fdisk /dev/sdb
mkfs.ext4 /dev/sdb1
mount /dev/sdb1 /mnt/
*(以上單節點的iscsi共享完成了,但有時我們的需求是,兩個機器掛同一塊共享盤,兩臺機器的修改也能同步,解決方法-----集羣)
集羣解決多節點
10.25和10.30
vim /etc/hosts
192.168.10.25 iscsi1
192.168.10.30 iscsi2
10.30
yum install -y ricci
service ricci start
passwd ricci
10.25
yum install -y ricci luci
service ricci start
passwd ricci
service luci start
10.25
clustat(查看集羣狀態)
cman_tool status
Version: 6.2.0
Config Version: 1
Cluster Name: cluster-0
Cluster Id: 27705
Cluster Member: Yes
Cluster Generation: 16
Membership state: Cluster-Member
Nodes: 2
Expected votes: 1
Total votes: 2
Node votes: 1
Quorum: 1
Active subsystems: 9
Flags: 2node
Ports Bound: 0 11 177
Node name: iscsi1
Node ID: 1
Multicast addresses: 239.192.108.165(組播地址)
Node addresses: 192.168.10.25
service rgmanager stop
service clvmd stop
service cman restart(查看cman的啓動情況,以上兩個依賴服務下關閉,只是看效果)
service rgmanager start
service clvmd start
mkfs.gfs2 -p lock_dlm -t cluster-0:testlock -j 2 /dev/sdb1(cluster-0不能亂寫是集羣名,-j 2 給兩臺機器分配日誌)
10.25和10.30
mount /dev/sdb1 /mnt/ (任意一臺機器修改,都會同步)
*(以上centos6的單節點多節點iscsi配置完成)
cenos7 iscsi單節點
服務器
yum -y install targetcli
//創建目錄
mkdir /iscsi_disks
//進入進入管理控制檯
targetcli
cd backstores/fileio
create disk01 /iscsi_disks/disk01.img 2G
//創建目標
cd /iscsi
create iqn.2018-01.iewb.net:storage01
cd iqn.2018-01.iewb.net:storage01/tpg1/luns
create /backstores/fileio/disk01
//創建acls
cd ../acls
create iqn.2018-01.iewb.net:storage01
//設置ACL(客戶端連接的IQN)
cd iqn.2018-01.iewb.net:storage01
set auth userid=username
set auth password=password
exit
//查看
ss -napt | grep 3260
systemctl start target
systemctl enable target
firewall-cmd --add-port 4260/tcp --permanent
客戶端
yum -y install iscsi-initiator-utils
vi /etc/iscsi/initiatorname.iscsi
InitiatorName=iqn.2018-01.iewb.net:storage01
vi /etc/iscsi/iscsid.conf
//取消以下注釋:
node.session.auth.authmethod = CHAP
node.session.auth.username = username
node.session.auth.password = password
systemctl restart iscsid
systemctl restart iscsi
//發現target
iscsiadm -m discovery -t sendtargets -p 172.16.88.21
iscsiadm -m node -o show
//登錄target
iscsiadm -m node --login
//確認連接狀態
iscsiadm -m session -o show
//確認分區狀況
cat /proc/partitions
//新建分區
fdisk /dev/sdb -n-p
//格式化分區
mkfs.ext4 /dev/sdb1
//掛載分區
mkdir /data
mount /dev/sdb1 /data
在/etc/fstab中添加
/dev/sdb1 /data ext4 _netdev 0 0
命令tune2fs -l /dev/sdb可以查到文件系統的UUID
在/etc/fstab中添加
UUID=xxxxxxx /data ext4 _netdev 0 0 替換掉原來的那行
大容量磁盤格式化
parted /dev/sdb
mklabel gpt //將MBR磁盤格式化爲GPT
mkpart primary 0% 100% //將整塊磁盤分成一個分區,0是分區開始位置,100%是分區結束位置。相同的命令爲:mkpart primary 0-1
mkfs.ext4 /dev/sdb1
創建raid備忘:
mdadm -E /dev/sd[b-c]
# mdadm --create /dev/md0 --level=mirror --raid-devices=2 /dev/sd[b-c]1
# cat /proc/mdstat
# mdadm -E /dev/sd[b-c]1
# mdadm --detail /dev/md0
mdadm --detail --scan --verbose >> /etc/mdadm.conf