An Energy-Efficient Strategy and Secure VM Placement Algorithm in Cloud Computing

Algorithm 5

Hosts free.

	Input: ACTH = {acth1, acth2, …, acthk} ⟶ Hosts which are in active state,
	ACTV = {actv11, actv12, …, actv21, actv22, …, actv2p} ⟶ VMs which are in active state.
	Output: ACTH Updated.
(1)	for each host in active state acthi ∈ ACTH from acthk to acth1 then do
(2)	if acth1 is in no working/idle state then
(3)	convert host acthi from no working/idle state to sleep state
(4)	end if loop
(5)	end for loop
(6)	StatusofVM = 0
(7)	for each host in active state acthi ∈ ACTH from acthk to acth1 then do
(8)	for each VM actvij ∈ acthi then do
(9)	if migration of actvij to ACTH—acthi then
(10)	StatusofVM = StatusofVM + 1
(11)	migrationij ← Host ID which is being targeted
(12)	end if loop
(13)	end for loop
(14)	if StatusofVM = j − 1 then
(15)	migrate all VMs using migrationij
(16)	convert host acthi from no working/idle state to sleep state
(17)	end if loop
(18)	end for loop