月份: 2016 年 5 月

Xenserver 的那些事

1.用命令列設定 VM 記憶體
xe vm-memory-limits-set uuid="UUID of your VM" static-min=1073741824 dynamic-min=1073741824 dynamic-max=1073741824 static-max=1073741824

2.新增一顆空白硬碟
# ll /dev/disk/by-id
# xe sr-create content-type=user device-config:device=/dev/disk/by-id/scsi-SATA_QEMU_HARDDISK_QM00002 host-uuid=984d9af1-9924-4a66-a535-a3819e1e1341 name-label="Local storage 2" shared=false type=ext

3.自動啟動VM

MySQL-MariaDB遠端存取操作流程

輸入指令(讓使用者從任何主機連接到mysql or MariaDB伺服器)

mysql -u root -p"youpassword"

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;
exit;
MySql 8.0==================================================
回復傳統密碼規則
[mysqld]
default-authentication-plugin=mysql_native_password

CREATE USER 'admin3'@'%' IDENTIFIED BY 'password';
GRANT ALL ON *.* TO 'admin3'@'%';
FLUSH PRIVILEGES;
每行結尾為[；]分號
這樣就能遠端連線了。
[註]有時候必須先修改 root 密碼
#ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';
啟動日誌檔=================================================
https://www.jianshu.com/p/db19a1d384bc

 

Xenserver添加存在資料的第二顆硬碟

  • Do a pvscan to get the Universally Unique Identifier (UUID) of an existing SR on a local disk. This example uses UUID 39baf126-a535-549f-58d6-feeda55f7801:# pvscan 
    PV /dev/sda3 VG VG_XenStorage-39baf126-a535-549f-58d6-feeda55f7801 lvm2 [66.87 GB / 57.87 GB free]
Total: 1 [66.87 GB] / in use: 1 [66.87 GB] / in no VG: 0 [0 ]
  • Note the output above, the VG name of the local drive /dev/sda3 is VG_XenStorage-39baf126-a535-549f-58d6-feeda55f7801 . The VG name contains the SR UUID that resides on this storage media. In this case, the UUID is 39baf126-a535-549f-58d6-feeda55f7801.
  • Introduce the SR with the following command:# xe sr-introduce uuid=39baf126-a535-549f-58d6-feeda55f7801 type=ext name-label=”Local storage” content-type=user
    This command sets up database records for the SR named “Local storage”.
  • Locate the SCSI ID of the device or partition where the SR data is stored:
    # ls -l /dev/disk/by-id/

    total 0
lrwxrwxrwx 1 root root 9 Jan 15 09:44 scsi-SATA_ST3500320AS_9QM13WP2 -> ../../sdb
lrwxrwxrwx 1 root root 10 Jan 15 09:44 scsi-SATA_ST3500320AS_9QM13WP2-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 9 Jan 15 09:44 scsi-SATA_ST380815AS_6QZ5Z1AM -> ../../sda
lrwxrwxrwx 1 root root 10 Jan 15 09:44 scsi-SATA_ST380815AS_6QZ5Z1AM-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Jan 15 09:44 scsi-SATA_ST380815AS_6QZ5Z1AM-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Jan 15 09:44 scsi-SATA_ST380815AS_6QZ5Z1AM-part3 -> ../../sda3

    In this case, the SCSI ID of the device /dev/sda3 is scsi-SATA_ST380815AS_6QZ5Z1AM-part3. This is the device name to use in the next command, where a PBD (physical block device – a connector between the XenServer host and the SR) is created.

  • Run the xe host-list command to find out the host UUID for the local host:
    # xe host-list

    uuid ( RO) : 83f2c775-57fc-457b-9f98-2b9b0a7dbcb5
name-label ( RW): xenserver1
name-description ( RO): Default install of XenServer
  • Create the PBD using the device SCSI ID, host UUID and SR UUID detected above:
    # xe pbd-create sr-uuid=39baf126-a535-549f-58d6-feeda55f7801
    device-config:device=/dev/disk/by-id/scsi-SATA_ST380815AS_6QZ5Z1AM-part3 host-uuid=83f2c775-57fc-457b-9f98-2b9b0a7dbcb5
    aec2c6fc-e1fb-0a27-2437-9862cffe213e
  • Attach the PBD created with xe pbd-plug command:
    # xe pbd-plug uuid=aec2c6fc-e1fb-0a27-2437-9862cffe213e
    The SR should be connected to the XenServer host and be visible in XenCenter.