Oracle Cloud Load Balancer

This template monitors Oracle Cloud Infrastructure (OCI) load balancer resources.

Available solutions

Zabbix version 8.0
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Oracle Cloud Load Balancer by HTTP

Overview

This template monitors Oracle Cloud Infrastructure (OCI) load balancer resources.

This template is not meant to be used independently, but together with Oracle Cloud by HTTP as a template for LLD host prototypes.

For communication with OCI, this template utilizes script items which execute HTTP GET and POST requests. POST requests are required for OCI Monitoring API as it utilizes Monitoring Query Language (MQL) which uses the HTTP request body for queries.

Requirements

Zabbix version: 8.0 and higher.

Tested versions

This template has been tested on:

  • Oracle Cloud Infrastructure

Configuration

Zabbix should be configured according to the instructions in the Templates out of the box section.

Setup

This template is not meant to be used independently. A host with the Oracle Cloud by HTTP template will discover OCI load balancers automatically, create host prototypes for each discovered load balancer, and apply it to this template.

If needed, you can specify an HTTP proxy for the template to use by changing the value of the {$OCI.HTTP.PROXY} user macro.

If using a proxy, the returned OK HTTP response could change from "200" to a different value. In that case, please adjust the user macro {$OCI.HTTP.RETURN.CODE.OK}.

The LLD filter values and trigger threshold values can be changed with the respective user macros.

Macros used

Name Description Default
{$OCI.HTTP.PROXY}

Set an HTTP proxy for OCI API requests if needed.
{$HTTP.TLS.VERIFY}

TLS certificate verification for script items: "none" - disabled, "peer" - verify the certificate chain and expiration, "full" - full verification. Any other value enables full verification. To override the setting for this template only, define the macro with the context "Oracle Cloud Load Balancer", e.g. {$HTTP.TLS.VERIFY:"Oracle Cloud Load Balancer"}.

 full
{$OCI.HTTP.RETURN.CODE.OK}

Set the HTTP return code that represents an OK response from the API. The default is "200", but can vary, for example, if a proxy is used.

 200
{$OCI.HTTP.TIMEOUT}

Set an HTTP request timeout.

 30s
{$OCI.LOAD.BALANCER.LISTENER.DISCOVERY.NAME.MATCHES}

Sets the regex string of load balancer listener names to allow in discovery.

 .*
{$OCI.LOAD.BALANCER.LISTENER.DISCOVERY.NAME.NOT_MATCHES}

Sets the regex string of load balancer listener names to ignore in discovery.

 CHANGE_IF_NEEDED
{$OCI.LOAD.BALANCER.LISTENER.DISCOVERY.PORT.MATCHES}

Sets the regex string of load balancer listener ports to allow in discovery.

 .*
{$OCI.LOAD.BALANCER.LISTENER.DISCOVERY.PORT.NOT_MATCHES}

Sets the regex string of load balancer listener ports to ignore in discovery.

 CHANGE_IF_NEEDED
{$OCI.LOAD.BALANCER.BACKEND_SET.DISCOVERY.NAME.MATCHES}

Sets the regex string of load balancer backend set names to allow in discovery.

 .*
{$OCI.LOAD.BALANCER.BACKEND_SET.DISCOVERY.NAME.NOT_MATCHES}

Sets the regex string of load balancer backend set names to ignore in discovery.

 CHANGE_IF_NEEDED
{$OCI.LOAD.BALANCER.BACKEND_SET.DISCOVERY.POLICY.MATCHES}

Sets the regex string of load balancer backend set policy to allow in discovery.

 .*
{$OCI.LOAD.BALANCER.BACKEND_SET.DISCOVERY.POLICY.NOT_MATCHES}

Sets the regex string of load balancer backend set policy to ignore in discovery.

 CHANGE_IF_NEEDED
{$OCI.LOAD.BALANCER.BACKEND.DISCOVERY.NAME.MATCHES}

Sets the regex string of load balancer backend set backend names to allow in discovery.

 .*
{$OCI.LOAD.BALANCER.BACKEND.DISCOVERY.NAME.NOT_MATCHES}

Sets the regex string of load balancer backend set backend names to ignore in discovery.

 CHANGE_IF_NEEDED
{$OCI.LOAD.BALANCER.BACKEND.DISCOVERY.PORT.MATCHES}

Sets the regex string of load balancer backend set backend ports to allow in discovery.

 .*
{$OCI.LOAD.BALANCER.BACKEND.DISCOVERY.PORT.NOT_MATCHES}

Sets the regex string of load balancer backend set backend ports to ignore in discovery.

 CHANGE_IF_NEEDED

Items

Name Description Type Key and additional info
Get data

Gets the load balancer data.

 Script oci.lb.data.get
Get health data

Gets the load balancer health data.

 Script oci.lb.data.health.get
Get metrics

Gets the load balancer metrics.

 Script oci.lb.metrics.get
Load balancer: Name

Name of the load balancer.

 Dependent item oci.lb.name

Preprocessing

  • JSON Path: $.displayName

  • Discard unchanged with heartbeat: 24h
Load balancer: State

The current state of the load balancer.

 Dependent item oci.lb.state

Preprocessing

  • JSON Path: $.lifecycleState

  • JavaScript: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 1h
Shape: Name

Shape name of the load balancer.

 Dependent item oci.lb.shape.name

Preprocessing

  • JSON Path: $.shapeName

  • Discard unchanged with heartbeat: 12h
Shape: Bandwidth, min

Minimum bandwidth set for shape of the load balancer.

 Dependent item oci.lb.shape.bandwidth.min

Preprocessing

  • JSON Path: $.shapeDetails.minimumBandwidthInMbps

  • Custom multiplier: 1048576

  • Discard unchanged with heartbeat: 12h
Shape: Bandwidth, max

Maximum bandwidth set for shape of the load balancer.

 Dependent item oci.lb.shape.bandwidth.max

Preprocessing

  • JSON Path: $.shapeDetails.maximumBandwidthInMbps

  • Custom multiplier: 1048576

  • Discard unchanged with heartbeat: 12h
Load balancer: Health

The current overall health status of the load balancer.

 Dependent item oci.lb.health.status

Preprocessing

  • JSON Path: $.status

  • JavaScript: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 1h
Backend sets: Count

The total number of backend sets associated with this load balancer.

 Dependent item oci.lb.backend.sets.count

Preprocessing

  • JSON Path: $.totalBackendSetCount

  • Discard unchanged with heartbeat: 6h
Backend sets: State: Unknown

The total number of backend sets that are currently in the UNKNOWN health state.

 Dependent item oci.lb.backend.sets.unknown.count

Preprocessing

  • JSON Path: $.unknownStateBackendSetNames.length()

  • Discard unchanged with heartbeat: 6h
Backend sets: State: Warning

The total number of backend sets that are currently in the WARNING health state.

 Dependent item oci.lb.backend.sets.warning.count

Preprocessing

  • JSON Path: $.warningStateBackendSetNames.length()

  • Discard unchanged with heartbeat: 6h
Backend sets: State: Critical

The total number of backend sets that are currently in the CRITICAL health state.

 Dependent item oci.lb.backend.sets.critical.count

Preprocessing

  • JSON Path: $.criticalStateBackendSetNames.length()

  • Discard unchanged with heartbeat: 6h
Connections: Handled

Number of handled connections by the load balancer.

 Dependent item oci.lb.metrics.connections.handled

Preprocessing

  • JSON Path: $.HandledConnections

  • Discard unchanged with heartbeat: 1h
Connections: Accepted

Number of accepted connections by the load balancer.

 Dependent item oci.lb.metrics.connections.accepted

Preprocessing

  • JSON Path: $.AcceptedConnections

  • Discard unchanged with heartbeat: 1h
Connections: Active

Number of active connections to the load balancer.

 Dependent item oci.lb.metrics.connections.active

Preprocessing

  • JSON Path: $.ActiveConnections

  • Discard unchanged with heartbeat: 1h
Connections: Closed

Number of closed connections by the load balancer.

 Dependent item oci.lb.metrics.connections.closed

Preprocessing

  • JSON Path: $.ClosedConnections

  • Discard unchanged with heartbeat: 1h
SSL: Connections: Active

Number of active SSL connections.

 Dependent item oci.lb.metrics.connections.active_ssl

Preprocessing

  • JSON Path: $.ActiveSSLConnections

  • Discard unchanged with heartbeat: 1h
SSL: Handshakes: Accepted

Number of accepted SSL handshakes by the load balancer.

 Dependent item oci.lb.metrics.handshake.accepted_ssl

Preprocessing

  • JSON Path: $.AcceptedSSLHandshake

  • Discard unchanged with heartbeat: 1h
SSL: Handshakes: Failed

Number of failed SSL handshakes.

 Dependent item oci.lb.metrics.handshake.failed_ssl

Preprocessing

  • JSON Path: $.FailedSSLHandshake

  • Discard unchanged with heartbeat: 1h
SSL: Failed client certificate verifications

Number of failed client SSL certificate verifications.

 Dependent item oci.lb.metrics.certificate.failed_ssl

Preprocessing

  • JSON Path: $.FailedSSLClientCertVerify

  • Discard unchanged with heartbeat: 1h
Networking: Bytes received

Bytes received by the load balancer.

 Dependent item oci.lb.metrics.bytes.in

Preprocessing

  • JSON Path: $.BytesReceived

  • Discard unchanged with heartbeat: 1h
Networking: Bytes sent

Bytes sent by the load balancer.

 Dependent item oci.lb.metrics.bytes.out

Preprocessing

  • JSON Path: $.BytesSent

  • Discard unchanged with heartbeat: 1h
Networking: Peak bandwidth

Displays the load balancer's peak bandwidth for the duration.

 Dependent item oci.lb.metrics.bandwidth.peak

Preprocessing

  • JSON Path: $.PeakBandwidth

  • Custom multiplier: 1000000

  • Discard unchanged with heartbeat: 1h
Networking: Response time first byte

Displays the load balancer's first byte response time (TCP only).

 Dependent item oci.lb.metrics.time.response

Preprocessing

  • JSON Path: $.ResponseTimeFirstByte

  • Custom multiplier: 0.001

  • Discard unchanged with heartbeat: 1h

Triggers

Name Description Expression Severity Dependencies and additional info
OCI Load Balancer: State has changed

Load balancer state has changed.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.state,#1)<>last(/Oracle Cloud Load Balancer by HTTP/oci.lb.state,#2) Info Manual close: Yes
OCI Load Balancer: Backend set count has changed

Backend set count has changed.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.sets.count,#1)<>last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.sets.count,#2) and length(last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.sets.count))>0 Info Manual close: Yes

LLD rule Listener discovery

Name Description Type Key and additional info
Listener discovery

Discover the load balancer's listeners.

 Dependent item oci.lb.listener.discovery

Preprocessing

  • JSON Path: $.listeners

  • JavaScript: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 1h

Item prototypes for Listener discovery

Name Description Type Key and additional info
Listener [{#LISTENER.NAME}]: Get data

Get the raw data for the discovered load balancer listener.

 Dependent item oci.lb.listener.get[{#LISTENER.NAME}]

Preprocessing

  • JSON Path: $.listeners.["{#LISTENER.NAME}"]

  • Discard unchanged with heartbeat: 1h
Listener [{#LISTENER.NAME}]: Port

The communication port for the listener.

 Dependent item oci.lb.listener.port["{#LISTENER.NAME}"]

Preprocessing

  • JSON Path: $.port

  • Discard unchanged with heartbeat: 6h
Listener [{#LISTENER.NAME}]: Protocol

The protocol on which the listener accepts connection requests.

 Dependent item oci.lb.listener.protocol["{#LISTENER.NAME}"]

Preprocessing

  • JSON Path: $.protocol

  • Discard unchanged with heartbeat: 6h

Trigger prototypes for Listener discovery

Name Description Expression Severity Dependencies and additional info
OCI Load Balancer: Listener [{#LISTENER.NAME}]: Listener port changed

Port for the listener has changed.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.listener.port["{#LISTENER.NAME}"],#1)<>last(/Oracle Cloud Load Balancer by HTTP/oci.lb.listener.port["{#LISTENER.NAME}"],#2) and length(last(/Oracle Cloud Load Balancer by HTTP/oci.lb.listener.port["{#LISTENER.NAME}"]))>0 Info Manual close: Yes
OCI Load Balancer: Listener [{#LISTENER.NAME}]: Listener protocol changed

Protocol for the listener has changed.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.listener.protocol["{#LISTENER.NAME}"],#1)<>last(/Oracle Cloud Load Balancer by HTTP/oci.lb.listener.protocol["{#LISTENER.NAME}"],#2) and length(last(/Oracle Cloud Load Balancer by HTTP/oci.lb.listener.protocol["{#LISTENER.NAME}"]))>0 Info Manual close: Yes

LLD rule Backend sets discovery

Name Description Type Key and additional info
Backend sets discovery

Discover the load balancer's backend sets.

 Dependent item oci.lb.backend.sets.discovery

Preprocessing

  • JSON Path: $.backendSets

  • JavaScript: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 1h

Item prototypes for Backend sets discovery

Name Description Type Key and additional info
Backend set [{#BACKEND.SET.NAME}]: Get metrics

Gets the backend set metrics.

 Script oci.lb.backend.set.metrics.get[{#BACKEND.SET.NAME}]
Backend set [{#BACKEND.SET.NAME}]: Backend servers: Total

Number of backend servers in the backend set.

 Dependent item oci.lb.backend.set.backend.servers[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.BackendServers

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Backend servers: Unhealthy

Number of unhealthy backend servers in the backend set.

 Dependent item oci.lb.backend.set.backend.servers.unhealthy[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.UnHealthyBackendServers

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Bytes sent

Number of bytes sent across all backend servers.

 Dependent item oci.lb.backend.set.bytes.sent[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.BytesSent

  • Discard unchanged with heartbeat: 10m
Backend set [{#BACKEND.SET.NAME}]: Bytes received

Number of bytes received across all backend servers.

 Dependent item oci.lb.backend.set.bytes.received[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.BytesReceived

  • Discard unchanged with heartbeat: 10m
Backend set [{#BACKEND.SET.NAME}]: Inbound requests

Number of incoming client requests to the backend set.

 Dependent item oci.lb.backend.set.http.requests[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpRequests

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Responses: Total

Number of responses across all backend servers.

 Dependent item oci.lb.backend.set.http.responses[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Responses: Average HTTP response time

Average response time of backend servers. HTTP only.

 Dependent item oci.lb.backend.set.response.http[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.ResponseTimeHttpHeader

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Responses: Average TCP response time

Average response time of backend servers. TCP only.

 Dependent item oci.lb.backend.set.response.tcp[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.ResponseTimeFirstByte

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Backend timeouts

Number of timeouts across all backend servers.

 Dependent item oci.lb.backend.set.backend.timeouts[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.BackendTimeouts

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Responses: Invalid header

Number of invalid header responses across all backend servers.

 Dependent item oci.lb.backend.set.response.invalid[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.InvalidHeaderResponses

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Responses: HTTP 200

Number of HTTP 200 responses.

 Dependent item oci.lb.backend.set.response.200[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses200

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Responses: HTTP 2xx

Number of HTTP 2xx responses.

 Dependent item oci.lb.backend.set.response.2xx[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses2xx

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Responses: HTTP 3xx

Number of HTTP 3xx responses.

 Dependent item oci.lb.backend.set.response.3xx[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses3xx

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Responses: HTTP 4xx

Number of HTTP 4xx responses.

 Dependent item oci.lb.backend.set.response.4xx[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses4xx

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Responses: HTTP 5xx

Number of HTTP 5xx responses.

 Dependent item oci.lb.backend.set.response.5xx[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses5xx

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Responses: HTTP 502

Number of HTTP 502 responses.

 Dependent item oci.lb.backend.set.response.502[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses502

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Responses: HTTP 504

Number of HTTP 504 responses.

 Dependent item oci.lb.backend.set.response.504[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.HttpResponses504

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Connections: Active

Number of active connections from the load balancer to all backend servers.

 Dependent item oci.lb.backend.set.connections.active[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.ActiveConnections

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Connections: Keep-alive

Number of keep-alive connections.

 Dependent item oci.lb.backend.set.connections.keepalive[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.KeepaliveConnections

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Connections: Closed

Number of closed connections.

 Dependent item oci.lb.backend.set.connections.closed[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.ClosedConnections

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Get health data

Gets the backend set health data.

 Script oci.lb.backend.set.health.get[{#BACKEND.SET.NAME}]
Backend set [{#BACKEND.SET.NAME}]: Backend set health

Overall health status of the backend set.

 Dependent item oci.lb.backend.set.health[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.status

  • JavaScript: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Get data

Gets the raw data for the discovered load balancer backend set.

 Dependent item oci.lb.backend.set.get[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.backendSets.["{#BACKEND.SET.NAME}"]
Backend set [{#BACKEND.SET.NAME}]: Policy

Policy for the backend set.

 Dependent item oci.lb.backend.set.policy[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.policy

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Number of backends

Total number of backends in the backend set.

 Dependent item oci.lb.backend.set.total[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.backends.length()

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Health checker: Port

Port for the backend set health checker.

 Dependent item oci.lb.backend.set.health.port[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.healthChecker.port

  • Discard unchanged with heartbeat: 6h

Trigger prototypes for Backend sets discovery

Name Description Expression Severity Dependencies and additional info
OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: Backend set policy changed

Policy for the backend set has changed.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.set.policy[{#BACKEND.SET.NAME}],#1)<>last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.set.policy[{#BACKEND.SET.NAME}],#2) and length(last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.set.policy[{#BACKEND.SET.NAME}]))>0 Info Manual close: Yes
OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: Number of backends changed

Total count of backends in the backend set has changed.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.set.total[{#BACKEND.SET.NAME}],#1)<>last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.set.total[{#BACKEND.SET.NAME}],#2) and length(last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.set.total[{#BACKEND.SET.NAME}]))>0 Info Manual close: Yes
Depends on:
  • OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: No backends configured
OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: No backends configured

There are no configured backends for the backend set.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.set.total[{#BACKEND.SET.NAME}],#1)=0 Warning

LLD rule Backends discovery

Name Description Type Key and additional info
Backends discovery

Discover backends of a backend set.

 Nested oci.lb.backend.discovery[{#BACKEND.SET.NAME}]

Preprocessing

  • JSON Path: $.backends

  • Discard unchanged with heartbeat: 1h

Item prototypes for Backends discovery

Name Description Type Key and additional info
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Get health data

Gets the backend health data.

 Script oci.lb.backend.health.get[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Backend health

The general health status of the specified backend server as reported by the primary and standby load balancers.

 Dependent item oci.lb.backend.health[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]

Preprocessing

  • JSON Path: $.status

  • JavaScript: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Get data

Get the raw data for the discovered load balancer backend.

 Dependent item oci.lb.backend.get[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]

Preprocessing

  • JSON Path: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 1h
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Drain status

Whether the load balancer should drain this server. Servers marked "drain" receive no new incoming traffic.

 Dependent item oci.lb.backend.drain[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]

Preprocessing

  • JSON Path: $.drain

  • Boolean to decimal

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Backup status

Whether the load balancer should treat this server as a backup unit.

If true, the load balancer forwards no ingress traffic to this backend server unless all other backend servers not marked as "backup" fail the health check policy.

 Dependent item oci.lb.backend.backup[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]

Preprocessing

  • JSON Path: $.backup

  • Boolean to decimal

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Offline status

Whether the load balancer should treat this server as offline. Offline servers receive no incoming traffic.

 Dependent item oci.lb.backend.offline[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]

Preprocessing

  • JSON Path: $.offline

  • Boolean to decimal

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Weight

The load balancing policy weight assigned to the server.

Backend servers with a higher weight receive a larger proportion of incoming traffic.

For example, a server weighted '3' receives 3 times the number of new connections as a server weighted '1'.

 Dependent item oci.lb.backend.weight[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]

Preprocessing

  • JSON Path: $.weight

  • Discard unchanged with heartbeat: 6h
Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Max connections

The maximum number of simultaneous connections the load balancer can make to the backend.

If this is not set or set to 0 then the maximum number of simultaneous connections the load balancer can make to the backend is unlimited.

 Dependent item oci.lb.backend.connections.max[{#BACKEND.SET.NAME}/{#BACKEND.NAME}]

Preprocessing

  • JSON Path: $.maxConnections

  • JavaScript: The text is too long. Please see the template.

  • Discard unchanged with heartbeat: 6h

Trigger prototypes for Backends discovery

Name Description Expression Severity Dependencies and additional info
OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Health in unknown state

Backend is in UNKNOWN health state.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.health[{#BACKEND.SET.NAME}/{#BACKEND.NAME}])<2 Info Depends on:
  • OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Health in warning state
OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Health in warning state

Backend is in WARNING health state.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.health[{#BACKEND.SET.NAME}/{#BACKEND.NAME}])=3 Warning Depends on:
  • OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Health in critical state
OCI Load Balancer: Backend set [{#BACKEND.SET.NAME}]: Backend [{#BACKEND.NAME}]: Health in critical state

Backend is in CRITICAL health state.

 last(/Oracle Cloud Load Balancer by HTTP/oci.lb.backend.health[{#BACKEND.SET.NAME}/{#BACKEND.NAME}])=4 High

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