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本文档介绍如何通过地理模式冗余在高可用性(HA)中安装Prime线缆调配6.1.5。
Cisco 建议您了解以下主题:
本文档中的信息基于以下软件和硬件版本:
本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始(默认)配置。如果您的网络处于活动状态,请确保您了解所有命令的潜在影响。

1. LVM在两个服务器上为LVBPRHOME、LVBPRDATA和LVBPRDBLOG创建卷。
2.准备Linux 7.4服务器在两台服务器上进行RDU HA部署。
3.在Geo冗余模式下安装RDU服务器
4. Geo冗余部署的第3层路由必备条件。
此图示针对辅助服务器。在主服务器上也需完成相同的过程。
[root@pcprdusecondary ~]# fdisk -l
Disk /dev/sda: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00025a26
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 31211519 14556160 8e Linux LVM
Disk /dev/mapper/rhel-root: 4294 MB, 4294967296 bytes, 8388608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/rhel-swap: 8455 MB, 8455716864 bytes, 16515072 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/rhel-home: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
[root@pcprdusecondary ~]# fdisk /dev/sda
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help): p
Disk /dev/sda: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00025a26
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 31211519 14556160 8e Linux LVM
Command (m for help): n
Partition type:
p primary (2 primary, 0 extended, 2 free)
e extended
Select (default p): p
Partition number (3,4, default 3): 3
First sector (31211520-209715199, default 31211520):
Using default value 31211520
Last sector, +sectors or +size{K,M,G} (31211520-209715199, default 209715199):
Using default value 209715199
Partition 3 of type Linux and of size 85.1 GiB is set
Command (m for help): p
Disk /dev/sda: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00025a26
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 31211519 14556160 8e Linux LVM
/dev/sda3 31211520 209715199 89251840 83 Linux
Command (m for help): t
Partition number (1-3, default 3): 3
Hex code (type L to list all codes): L
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
5 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
6 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
8 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
9 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f4 SpeedStor
14 Hidden FAT16 61 SpeedStor ab Darwin boot f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
1e Hidden W95 FAT1 80 Old Minix
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
Syncing disks.
应该出现此错误消息。您需要重新加载Linux计算机以使新更改生效。
[root@pcprdusecondary ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 4.0G 946M 3.1G 24% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 0 3.9G 0% /dev/shm
tmpfs 3.9G 8.6M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/sda1 1014M 143M 872M 15% /boot
/dev/mapper/rhel-home 2.0G 33M 2.0G 2% /home
tmpfs 781M 0 781M 0% /run/user/0
[root@pcprdusecondary ~]# fdisk -l
Disk /dev/sda: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x00025a26
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 31211519 14556160 8e Linux LVM
/dev/sda3 31211520 209715199 89251840 8e Linux LVM
Disk /dev/mapper/rhel-root: 4294 MB, 4294967296 bytes, 8388608 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/rhel-swap: 8455 MB, 8455716864 bytes, 16515072 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/rhel-home: 2147 MB, 2147483648 bytes, 4194304 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
[root@pcprdusecondary ~]# pvcreate /dev/sda3

此Linux LVM创建是RDU服务器安装的先决条件。
1.<logical volume for Prime Cable Provisioning install directory> — 安装在/bprHome目录中。例如LVBPRHOME。
2.<logical volume for Prime Cable Provisioning data directory> — 安装在/bprData目录中。例如,LVBPRDATA
3.<logical volume for Prime Cable Provisioning log directory > - Mounted on /bprLog directory。例如,LVBPRDBLOG
例如: 此过程是为分配了3 GB磁盘空间的BPRHOME、15 GB磁盘空间的BPRDATA和5 GB磁盘空间的BPRDBLOG创建逻辑卷。您需要根据分配选择要扩展的磁盘空间。

vgcreate <vg_name> <pvname>
[root@pcprdusecondary ~]# vgcreate rdusecondary /dev/sda3
lvcreate -L <值GB> -n <logicalvolumename> <volumegroupname>
[root@pcprdusecondary ~]# lvcreate -L +3GB -n LVBPRHOME rdusecondary
[root@pcprdusecondary ~]# lvcreate -L +15GB -n LVBPRDATA rdusecondary
[root@pcprdusecondary ~]# lvcreate -L +5GB -n LVBPRDBLOG rdusecondary

bprHome — 安装应用程序路径(默认目录 — /opt/CSCObac)
bprData — 安装数据路径。(默认目录 — /var/CSCObac)
bprLog — 安装日志路径。(默认目录 — /var/CSCObac)
mkfs.xfs /dev/<volumegroupname>/<logicalvolume>
[root@pcprdusecondary ~]# mkfs.xfs /dev/rdusecondary/LVBPRHOME
[root@pcprdusecondary ~]# mkfs.xfs /dev/rdusecondary/LVBPRDATA
[root@pcprdusecondary ~]# mkfs.xfs /dev/rdusecondary/LVBPRDBLOG

[root@pcprdusecondary ~]# mkdir bprHome
[root@pcprdusecondary ~]# mkdir bprData
[root@pcprdusecondary ~]# mkdir bprLog
[root@pcprdusecondary ~]# mount /dev/RDUPRIMARY/LVBPRHOME /bprHome/
[root@pcprdusecondary ~]# mount /dev/RDUPRIMARY/LVBPRDATA /bprData/
[root@pcprdusecondary ~]# mount /dev/RDUPRIMARY/LVBPRDBLOG /bprLog

[root@pcprdusecondary ~]# fdisk -l
[root@pcprdusecondary ~]# pvdisplay
[root@pcprdusecondary ~]# vgdisplay
[root@pcprdusecondary ~]# lvdisplay
注意:
无需添加逻辑卷的fstab条目。Corosync群集将负责装载卷。过去,由于存在这些条目,有些客户遇到过问题。在重新启动系统期间,有时由于计时问题,主卷和辅助卷都会尝试装入卷。
两台服务器的卷组名称和逻辑卷(LVBPRHOME、LVBPRDATA和LVBPRDBLOG)必须相同。两台服务器上应共享相同的磁盘空间。
DRBD块设备文件系统同步只在两个服务器上运行相同的磁盘大小。
CentOS Linux版本必须为7.4,内核版本必须为3.10.0-693.11.6.el7.x86_64。
确保两台服务器对通告VIP的公共IP地址 — ens192使用相同的接口。
有关详细信息,请参阅快速入门指南:
RDU Geo Redundancy是RHEL 7.4或CentOS 7.4(均为64位)支持的RDU HA的增强功能,其中RDU主节点和辅助节点可以位于不同的地理位置,或者两个节点可以位于不同的子网。
虚拟IP(VIP)的路由注入需要在主服务器和辅助服务器所连接的入口路由器上完成。
VIP将从活动服务器通告为RIP2通告,因此需要将RIP2路由重分布到用户环境中运行的动态路由协议。
如何将RIP2路由重分布并通告给OSPF IGRP。相同的重分发可以用于其他协议,例如EIGRP/IBGP。
对于PCP Geo-redundancy解决方案,VIP的CIDR值应为32。

Example: Here OSPF is the dynamic protocol
router ospf <processed>
redistribute rip metric-type 1 subnets. For RIP2, it uses metric as hop count.
Example: Here ISIS is the dynamic protocol
router isis
redistribute rip metric
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