def decommission_unused():
"""De-provisions inactive and orphan nodes."""
configure()
nodes = classify_nodes()
use_only(*nodes[INACTIVE] + nodes[ORPHAN])
if len(env.nodes) == 0:
info("There are no inactive or orphan nodes to decommission.")
else:
decommission_nodes()
def list_nodes():
"""List all nodes."""
configure()
print("")
nodes = classify_nodes()
if nodes[INACTIVE]:
print("")
print(magenta("** INACTIVE nodes **"))
if lb_specified():
print(magenta("INACTIVE nodes are nodes not behind the load balancer."))
elif virtual_ip_specified():
print(magenta("INACTIVE nodes are nodes not behind the virtual IP."))
else:
print(magenta("INACTIVE nodes are nodes in excess of the target cluster size."))
if len(nodes[ORPHAN]) > 0:
print(magenta("To decommission INACTIVE and ORPHAN nodes, use the prune task."))
else:
print(magenta("To decommission these nodes, use the prune task."))
show(nodes[INACTIVE])
if nodes[ORPHAN]:
print("")
print(red("** ORPHAN nodes **"))
if lb_specified():
print(red("ORPHAN nodes are nodes not behind the load balancer but ought to be according to target cluster size and node id sequence."))
elif virtual_ip_specified():
print(red("ORPHAN nodes are nodes not behind the virtual IP but ought to be according to target cluster size and node id sequence."))
if nodes[INACTIVE]:
print(red("To decommission INACTIVE and ORPHAN nodes, use the prune task."))
else:
print(red("To decommission these nodes, use the prune task."))
show(nodes[ORPHAN])
if nodes[EXTRA]:
print(cyan("** EXTRA nodes **"))
print(cyan("EXTRA nodes are nodes in excess of the target cluster size but live behind the load balancer."))
print(cyan("To decommission these nodes, use the scale_down task."))
show(nodes[EXTRA])
if nodes[ACTIVE]:
print("")
print(green("** ACTIVE nodes **"))
if lb_specified():
print(green("ACTIVE nodes are nodes behind the load balancer and current according to target cluster size and node id sequence."))
elif virtual_ip_specified():
print(green("ACTIVE nodes are nodes behind the virtual IP and current according to the node id sequence."))
show(nodes[ACTIVE])
if nodes[ACTIVE] or nodes[ORPHAN] or nodes[EXTRA] or nodes[INACTIVE]:
print("")
print("To decommission all nodes, use the teardown task.")
print("To connect to a node, use:")
print(green("ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i %s %s@<ip address>" % (env.key_filename[0], env.user)))
else:
print(cyan("There are no nodes in the cluster."))
def decommission_all():
"""De-provisions all nodes."""
configure()
use_only(*instances_with_platform_and_role(env.platform, env.role))
if len(env.nodes) == 0:
info("There are no nodes to decommission.")
else:
show()
if confirm("Are you sure you want to decommission ALL %d nodes?" % len(env.nodes), default=False):
decommission_nodes()
def provision():
"""Provisions env.num_nodes new nodes."""
configure()
use_only()
env.new_nodes = provision_nodes(env.num_nodes, classify_nodes()[MAX_ID] + 1)