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ceph-mixins: nvmeof alerts added
Signed-off-by: Paul Cuzner <[email protected]>
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‎monitoring/ceph-mixin/prometheus_alerts.yml‎

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@@ -756,3 +756,132 @@ groups:
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oid: "1.3.6.1.4.1.50495.1.2.1.10.5"
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severity: "warning"
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type: "ceph_default"
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- name: "nvmeof"
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rules:
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- alert: "NVMeoFSubsystemNamespaceLimit"
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annotations:
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description: "Subsystems have a max namespace limit defined at creation time. This alert means that no more namespaces can be added to {{ $labels.nqn }}"
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summary: "{{ $labels.nqn }} subsystem has reached its maximum number of namespaces "
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expr: "(count by(nqn) (ceph_nvmeof_subsystem_namespace_metadata)) >= ceph_nvmeof_subsystem_namespace_limit"
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for: "1m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFTooManyGateways"
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annotations:
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description: "You may create many gateways, but 4 is the tested limit"
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summary: "Max supported gateways exceeded "
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expr: "count(ceph_nvmeof_gateway_info) > 4.00"
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for: "1m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFMaxGatewayGroupSize"
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annotations:
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description: "You may create many gateways in a gateway group, but 2 is the tested limit"
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summary: "Max gateways within a gateway group ({{ $labels.group }}) exceeded "
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expr: "count by(group) (ceph_nvmeof_gateway_info) > 2.00"
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for: "1m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFSingleGatewayGroup"
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annotations:
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description: "Although a single member gateway group is valid, it should only be used for test purposes"
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summary: "The gateway group {{ $labels.group }} consists of a single gateway - HA is not possible "
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expr: "count by(group) (ceph_nvmeof_gateway_info) == 1"
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for: "5m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFHighGatewayCPU"
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annotations:
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description: "Typically, high CPU may indicate degraded performance. Consider increasing the number of reactor cores"
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summary: "CPU used by {{ $labels.instance }} NVMe-oF Gateway is high "
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expr: "label_replace(avg by(instance) (rate(ceph_nvmeof_reactor_seconds_total{mode=\"busy\"}[1m])),\"instance\",\"$1\",\"instance\",\"(.*):.*\") > 80.00"
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for: "10m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFGatewayOpenSecurity"
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annotations:
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description: "It is good practice to ensure subsystems use host security to reduce the risk of unexpected data loss"
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summary: "Subsystem {{ $labels.nqn }} has been defined without host level security "
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expr: "ceph_nvmeof_subsystem_metadata{allow_any_host=\"yes\"}"
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for: "5m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFTooManySubsystems"
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annotations:
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description: "Although you may continue to create subsystems in {{ $labels.gateway_host }}, the configuration may not be supported"
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summary: "The number of subsystems defined to the gateway exceeds supported values "
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expr: "count by(gateway_host) (label_replace(ceph_nvmeof_subsystem_metadata,\"gateway_host\",\"$1\",\"instance\",\"(.*):.*\")) > 16.00"
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for: "1m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFVersionMismatch"
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annotations:
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description: "This may indicate an issue with deployment. Check cephadm logs"
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summary: "The cluster has different NVMe-oF gateway releases active "
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expr: "count(count by(version) (ceph_nvmeof_gateway_info)) > 1"
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for: "1h"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFHighClientCount"
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annotations:
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description: "The supported limit for clients connecting to a subsystem is 32"
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summary: "The number of clients connected to {{ $labels.nqn }} is too high "
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expr: "ceph_nvmeof_subsystem_host_count > 32.00"
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for: "1m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFHighHostCPU"
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annotations:
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description: "High CPU on a gateway host can lead to CPU contention and performance degradation"
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summary: "The CPU is high ({{ $value }}%) on NVMeoF Gateway host ({{ $labels.host }}) "
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expr: "100-((100*(avg by(host) (label_replace(rate(node_cpu_seconds_total{mode=\"idle\"}[5m]),\"host\",\"$1\",\"instance\",\"(.*):.*\")) * on(host) group_right label_replace(ceph_nvmeof_gateway_info,\"host\",\"$1\",\"instance\",\"(.*):.*\")))) >= 80.00"
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for: "10m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFInterfaceDown"
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annotations:
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description: "A NIC used by one or more subsystems is in a down state"
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summary: "Network interface {{ $labels.device }} is down "
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expr: "ceph_nvmeof_subsystem_listener_iface_info{operstate=\"down\"}"
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for: "30s"
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labels:
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oid: "1.3.6.1.4.1.50495.1.2.1.14.1"
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFInterfaceDuplex"
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annotations:
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description: "Until this is resolved, performance from the gateway will be degraded"
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summary: "Network interface {{ $labels.device }} is not running in full duplex mode "
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expr: "ceph_nvmeof_subsystem_listener_iface_info{duplex!=\"full\"}"
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for: "30s"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFHighReadLatency"
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annotations:
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description: "High latencies may indicate a constraint within the cluster e.g. CPU, network. Please investigate"
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summary: "The average read latency over the last 5 mins has reached 10 ms or more on {{ $labels.gateway }}"
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expr: "label_replace((avg by(instance) ((rate(ceph_nvmeof_bdev_read_seconds_total[1m]) / rate(ceph_nvmeof_bdev_reads_completed_total[1m])))),\"gateway\",\"$1\",\"instance\",\"(.*):.*\") > 0.01"
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for: "5m"
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labels:
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severity: "warning"
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type: "ceph_default"
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- alert: "NVMeoFHighWriteLatency"
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annotations:
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description: "High latencies may indicate a constraint within the cluster e.g. CPU, network. Please investigate"
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summary: "The average write latency over the last 5 mins has reached 20 ms or more on {{ $labels.gateway }}"
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expr: "label_replace((avg by(instance) ((rate(ceph_nvmeof_bdev_write_seconds_total[5m]) / rate(ceph_nvmeof_bdev_writes_completed_total[5m])))),\"gateway\",\"$1\",\"instance\",\"(.*):.*\") > 0.02"
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for: "5m"
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labels:
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severity: "warning"
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type: "ceph_default"

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