Multi-tenant system and control method of multi-tenant system

A computer-readable recording medium having stored therein a management program causing a computer to execute a process comprising:

• allocating a first identifier that identifies, from among tenants included in a multi-tenant system, a tenant that uses virtual machines running on the multi-tenant system;
• allocating, for each terminating device, a second identifier to virtual machines running on a second network in which terminating devices are installed, where the second identifier identifies, from among the tenants included in the multi-tenant system, a tenant that uses virtual machines running on the multi-tenant system;
• creating, for each terminating device, conversion information in which the first identifier is associated with the second identifier that is allocated to each of the virtual machines;
• and
• setting each of the terminating devices such that a packet is encapsulated in accordance with the created conversion information.

A control method of a multi-tenant system that includes multiple terminating devices that transfer, via a first network, a packet output from a virtual machine and that includes a management device that manages the terminating devices, the control method of the multi-tenant system comprising:

• firstly allocating by the management device, a first identifier that identifies, from among tenants included in the multi-tenant system, a tenant that uses virtual machines running on the multi-tenant system;
• secondly allocating by the management device, for each terminating device, to virtual machines running on the second network in which the terminating devices are installed, a second identifier that identifies, from among tenants included in the multi-tenant system, a tenant that uses virtual machines running on the multi-tenant system;
• creating by the management device, for each terminating device, conversion information in which the first identifier that is allocated to each of the virtual machines at the firstly allocating is associated with the second identifier that is allocated at the secondly allocating to each of the virtual machines;
• distributing by the management device, the conversion information created at the creating to each of the terminating devices;
• storing by the terminating device, the conversion information distributed at the distributing;
• acquiring by the terminating device, from the conversion information stored at the storing when the terminating device receives a packet, a first identifier that is associated with a second identifier that is allocated to a tenant that uses a virtual machine that transmitted the received packet;
• attaching by the terminating device, a header that includes the first identifier acquired at the acquiring to the packet and encapsulating the packet;
• and
• transmitting by the terminating device, the encapsulated packet to a terminating device via the first network.