Method and apparatus for allocating CTDB-based virtual IP address, and distributed storage device

Patent metadata

Field	Value
Publication number	US-11757830-B2
Application number	US-202017910083-A
Country	US
Kind code	B2
Filing date	Jun 24, 2020
Priority date	Mar 12, 2020
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

Disclosed are a Cluster Trivial Database (CTDB)-based virtual Internet Protocol (IP) address allocation method and apparatus, a distributed storage device, and a computer-readable storage medium. The method is applied to a distributed storage cluster. A known IP Version 4 (IPV4) virtual IP address parameter and available IPV4 virtual IP address parameter corresponding to an IPV4 virtual IP address and a known IP Version 6 (IPV6) virtual IP address parameter and available IPV6 virtual IP address parameter corresponding to an IPV6 virtual IP address may be acquired to obtain an IPV4 allocation result and an IPV6 allocation result by calculation respectively, and then virtual IP addresses are allocated to each normal node by use of the IPV4 allocation result and the IPV6 allocation result.

First claim

The invention claimed is:

1. A method for allocating a virtual Internet Protocol (IP) address, being applied to a distributed storage cluster and comprising:
acquiring, by a Cluster Trivial Database (CTDB) master node, a known IP Version 4 (IPV4) virtual IP address parameter, a known IP Version 6 (IPV6) virtual IP address parameter, an available IPV4 virtual IP address parameter, and an available IPV6 virtual IP address parameter, wherein the known IPV4 virtual IP address parameter comprises a known IPV4 virtual IP address corresponding to each of normal nodes;
performing virtual IP address allocation calculation by use of the known IPV4 virtual IP address parameter and the available IPV4 virtual IP address parameter to obtain an IPV4 allocation result;
performing virtual IP address allocation calculation by use of the known IPV6 virtual IP address parameter and the available IPV6 virtual IP address parameter to obtain an IPV6 allocation result; and
performing virtual IP address allocation on each of the normal nodes according to the IPV4 allocation result and the IPV6 allocation result;
wherein the performing virtual IP address allocation on each of the normal nodes according to the IPV4 allocation result and the IPV6 allocation result comprises:
generating a final allocation result according to the IPV4 allocation result and the IPV6 allocation result; and
performing virtual IP address allocation on each of the normal nodes according to the final allocation result.

2. The method for allocating the virtual IP address according to claim 1 , wherein the acquiring, by a CTDB master node, a known IPV4 virtual IP address parameter, a known IPV6 virtual IP address parameter, an available IPV4 virtual IP address parameter, and an available IPV6 virtual IP address parameter comprises:
acquiring, by the CTDB master node, a known virtual IP address parameter and an available virtual IP address parameter, wherein the known virtual IP address parameter comprises a known virtual IP address corresponding to each of the normal nodes, and the available virtual IP address parameter comprises an available virtual IP address corresponding to each of the normal nodes; and
separating IPV4 parts and IPV6 parts in the known virtual IP address parameter and the available virtual IP address parameter respectively to obtain the known IPV4 virtual IP address parameter, the known IPV6 virtual IP address parameter, the available IPV4 virtual IP address parameter, and the available IPV6 virtual IP address parameter.

3. The method for allocating the virtual IP address according to claim 2 , wherein when the known virtual IP address parameter and the available virtual IP address parameter are a known virtual IP address list and an available virtual IP address list respectively, the separating IPV4 parts and IPV6 parts in the known virtual IP address parameter and the available virtual IP address parameter respectively to obtain the known IPV4 virtual IP address parameter, the known IPV6 virtual IP address parameter, the available IPV4 virtual IP address parameter, and the available IPV6 virtual IP address parameter comprises:
traversing all known virtual IP addresses corresponding to each of the normal nodes in the known virtual IP address list, and recording a first number and a second number, wherein the first number is a number of known IPV4 virtual IP addresses in the known virtual IP address list, and the second number is a number of known IPV6 virtual IP addresses in the known virtual IP address list;
generating a known IPV4 virtual IP address list and a known IPV6 virtual IP address list corresponding to the known virtual IP address list according to the first number and the second number, wherein a length of the known IPV4 virtual IP address list is the first number, and a length of the known IPV6 virtual IP address list is the second number;
traversing all available virtual IP addresses corresponding to each of the normal nodes in the available virtual IP address list, and recording a third number and a fourth number, wherein the third number is a number of available IPV4 virtual IP addresses in the available virtual IP address list, and the fourth number is a number of available IPV6 virtual IP addresses in the available virtual IP address list; and
generating an available IPV4 virtual IP address list and an available IPV6 virtual IP address list corresponding to the available virtual IP address list according to the third number and the fourth number, wherein a length of the available IPV4 virtual IP address list is the third number, and a length of the available IPV6 virtual IP address list is the fourth number.

4. The method for allocating the virtual IP address according to claim 1 , wherein the performing virtual IP address allocation on each of the normal nodes according to the IPV4 allocation result and the IPV6 allocation result comprises:
in response to a determination that the IPV4 allocation result is null, determining the IPV6 allocation result as the final allocation result;
in response to a determination that the IPV6 allocation result is null, determining the IPV4 allocation result as the final allocation result; and
in response to a determination that both the IPV4 allocation result and the IPV6 allocation result are not null, connecting the IPV6 allocation result to the IPV4 allocation result to generate the final allocation result.

5. The method for allocating the virtual IP address according to claim 1 , wherein before the performing virtual IP address allocation calculation by use of the known IPV4 virtual IP address parameter and the available IPV4 virtual IP address parameter to obtain an IPV4 allocation result, the method further comprises:
determining whether a condition is satisfied that the known IPV4 virtual IP address parameter comprises a known IPV4 virtual IP address corresponding to a target node or the available IPV4 virtual IP address parameter comprises an available IPV4 virtual IP address corresponding to any of the normal nodes, wherein the target node is any of the normal nodes, and the target node currently holds an IPV4 virtual IP address;
in response to a determination that the condition is satisfied, performing the virtual IP address allocation calculation by use of the known IPV4 virtual IP address parameter and the available IPV4 virtual IP address parameter to obtain the IPV4 allocation result; and
in response to a determination that the condition is not satisfied, performing the virtual IP address allocation calculation by use of the known IPV6 virtual IP address parameter and the available IPV6 virtual IP address parameter to obtain the IPV6 allocation result.

6. The method for allocating the virtual IP address according to claim 1 , wherein a number of known IPV4 virtual IP addresses in the known IPV4 virtual IP address parameter is an integral multiple of a number of the normal nodes, and a number of known IPV6 virtual IP addresses in the known IPV6 virtual IP address parameter is an integral multiple of the number of the normal nodes.

7. The method for allocating the virtual IP address according to claim 1 , wherein before the performing virtual IP address allocation on each of the normal nodes according to the IPV4 allocation result and the IPV6 allocation result, the method comprises:
determining whether the normal nodes comprise a reallocation node according to the IPV4 allocation result and the IPV6 allocation result, wherein a number of virtual IP addresses corresponding to the reallocation node is larger than a number of virtual IP addresses corresponding to an allocation target node by 2, and the allocation target node is any of the normal nodes;
in response to a determination that the normal nodes do not comprise the reallocation

Assignees

• Inspur Suzhou Intelligent Technology Co Ltd

Inventors

• Zhai Yunlei
• Zhang Duan

Classifications

• H04L61/5007 Primary

  Internet protocol [IP] addresses · CPC title

• G06F16/27 Primary

  Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor · CPC title

• H04L67/1097

  for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS] · CPC title

• H04L41/0893

  Assignment of logical groups to network elements · CPC title

• H04L67/30

  Profiles · CPC title