A computer-implemented method for building a predefined secret value allocated to a first pod belonging to a node of a system comprising an orchestrator, said node comprising a second pod, said system including and controlling a first storage area whose access is restricted to pods belonging to the node and including a second storage area whose access is restricted to said second pod, each of said first and second pods consisting in one or more containers, characterized in that said system is compliant with Kubernetes, in that the method comprises the successive steps: - the second pod retrieves both a first secret value stored in a third storage area of the node and a second secret value stored in the second storage area and computes a third secret value by applying a first function to said first and second secret values, - one of said first and second pods retrieves a fourth secret value stored in the first storage area and computes a fifth secret value by applying a second function to said third and fourth secret values, - said first pod retrieves a sixth secret value stored in said first pod and computes the predefined secret value by applying a third function to said fifth and sixth secret values; and in that the following steps have been previously performed: - identifying the predefined secret value and allocating the predefined secret value to the first pod, - getting the sixth secret value from a configuration file corresponding to the first pod, - computing said fifth secret value from both the predefined secret value and the sixth secret value thanks to a function which is the inverse of said third function, - identifying the fourth secret value and computing said third secret value from both the fourth secret value and the fifth secret value thanks to a function which is the inverse of said second function, - identifying the first secret value and computing said second secret value from both the first secret value and the third secret value thanks to a function which is the inverse of said first function. - the second pod retrieves both a first secret value stored in a third storage area of the node and a second secret value stored in the second storage area and computes a third secret value by applying a first function to said first and second secret values, - one of said first and second pods retrieves a fourth secret value stored in the first storage area and computes a fifth secret value by applying a second function to said third and fourth secret values, - said first pod retrieves a sixth secret value stored in said first pod and computes the predefined secret value by applying a third function to said fifth and sixth secret values; and in that the following steps have been previously performed: - identifying the predefined secret value and allocating the predefined secret value to the first pod, - getting the sixth secret value from a configuration file corresponding to the first pod, - computing said fifth secret value from both the predefined secret value and the sixth secret value thanks to a function which is the inverse of said third function, - identifying the fourth secret value and computing said third secret value from both the fourth secret value and the fifth secret value thanks to a function which is the inverse of said second function, - identifying the predefined secret value and allocating the predefined secret value to the first pod, - getting the sixth secret value from a configuration file corresponding to the first pod, - computing said fifth secret value from both the predefined secret value and the sixth secret value thanks to a function which is the inverse of said third function, - identifying the fourth secret value and computing said third secret value from both the fourth secret value and the fifth secret value thanks to a function which is the inverse of said second function, - identifying the first secret value and computing said second secret value from both the first secret value and the third secret value thanks to a function which is the inverse of said first function.