[required] The metric for which you want to return information.
-
ClientTLSNegotiationErrorCount
- The number of TLS connections
initiated by the client that did not establish a session with the
load balancer due to a TLS error generated by the load balancer.
Possible causes include a mismatch of ciphers or protocols.
Statistics
: The most useful statistic is Sum
.
Unit
: The published unit is Count
.
-
HealthyHostCount
- The number of target instances that are
considered healthy.
Statistics
: The most useful statistic are Average
, Minimum
,
and Maximum
.
Unit
: The published unit is Count
.
-
HTTPCode_Instance_2XX_Count
- The number of HTTP 2XX response
codes generated by the target instances. This does not include any
response codes generated by the load balancer.
Statistics
: The most useful statistic is Sum
. Note that
Minimum
, Maximum
, and Average
all return 1
.
Unit
: The published unit is Count
.
-
HTTPCode_Instance_3XX_Count
- The number of HTTP 3XX response
codes generated by the target instances. This does not include any
response codes generated by the load balancer.
Statistics
: The most useful statistic is Sum
. Note that
Minimum
, Maximum
, and Average
all return 1
.
Unit
: The published unit is Count
.
-
HTTPCode_Instance_4XX_Count
- The number of HTTP 4XX response
codes generated by the target instances. This does not include any
response codes generated by the load balancer.
Statistics
: The most useful statistic is Sum
. Note that
Minimum
, Maximum
, and Average
all return 1
.
Unit
: The published unit is Count
.
-
HTTPCode_Instance_5XX_Count
- The number of HTTP 5XX response
codes generated by the target instances. This does not include any
response codes generated by the load balancer.
Statistics
: The most useful statistic is Sum
. Note that
Minimum
, Maximum
, and Average
all return 1
.
Unit
: The published unit is Count
.
-
HTTPCode_LB_4XX_Count
- The number of HTTP 4XX client error
codes that originated from the load balancer. Client errors are
generated when requests are malformed or incomplete. These requests
were not received by the target instance. This count does not
include response codes generated by the target instances.
Statistics
: The most useful statistic is Sum
. Note that
Minimum
, Maximum
, and Average
all return 1
.
Unit
: The published unit is Count
.
-
HTTPCode_LB_5XX_Count
- The number of HTTP 5XX server error
codes that originated from the load balancer. This does not include
any response codes generated by the target instance. This metric is
reported if there are no healthy instances attached to the load
balancer, or if the request rate exceeds the capacity of the
instances (spillover) or the load balancer.
Statistics
: The most useful statistic is Sum
. Note that
Minimum
, Maximum
, and Average
all return 1
.
Unit
: The published unit is Count
.
-
InstanceResponseTime
- The time elapsed, in seconds, after the
request leaves the load balancer until a response from the target
instance is received.
Statistics
: The most useful statistic is Average
.
Unit
: The published unit is Seconds
.
-
RejectedConnectionCount
- The number of connections that were
rejected because the load balancer had reached its maximum number of
connections.
Statistics
: The most useful statistic is Sum
.
Unit
: The published unit is Count
.
-
RequestCount
- The number of requests processed over IPv4.
This count includes only the requests with a response generated by a
target instance of the load balancer.
Statistics
: The most useful statistic is Sum
. Note that
Minimum
, Maximum
, and Average
all return 1
.
Unit
: The published unit is Count
.
-
UnhealthyHostCount
- The number of target instances that are
considered unhealthy.
Statistics
: The most useful statistic are Average
, Minimum
,
and Maximum
.
Unit
: The published unit is Count
.