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[Docs] Add docs for memberlist metrics (#14753) 

* Add metrics for consul.memberlist.node.instances, consul.memberlist.queue.broadcast, consul.memberlist.size.local, and consul.memberlist.size.remote

* Fixing last table on page that does not render properly

* fixing queue name
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John Murret 2022-10-11 10:02:51 -06:00 committed by GitHub
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website/content/docs/agent/telemetry.mdx
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@ -623,8 +623,12 @@ are allowed for <EnterpriseAlert inline />.
| `consul.memberlist.msg_alive` | Counts the number of alive messages, that the agent has processed so far, based on the message information given by the network layer. | messages / Interval | counter |
| `consul.memberlist.msg_dead` | The number of dead messages that the agent has processed so far, based on the message information given by the network layer. | messages / Interval | counter |
| `consul.memberlist.msg_suspect` | The number of suspect messages that the agent has processed so far, based on the message information given by the network layer. | messages / Interval | counter |
| `consul.memberlist.node.instances` | Tracks the number of instances in each of the node states: alive, dead, suspect, and left. | nodes | gauge |
| `consul.memberlist.probeNode` | Measures the time taken to perform a single round of failure detection on a select agent. | nodes / Interval | counter |
| `consul.memberlist.pushPullNode` | Measures the number of agents that have exchanged state with this agent. | nodes / Interval | counter |
| `consul.memberlist.queue.broadcasts` | Measures the number of messages waiting to be broadcast to other gossip participants. | messages | sample |
| `consul.memberlist.size.local` | Measures the size in bytes of the memberlist before it is sent to another gossip recipient. | bytes | gauge |
| `consul.memberlist.size.remote` | Measures the size in bytes of incoming memberlists from other gossip participants. | bytes | gauge |
| `consul.serf.member.failed` | Increments when an agent is marked dead. This can be an indicator of overloaded agents, network problems, or configuration errors where agents cannot connect to each other on the [required ports](/docs/agent/config/config-files#ports). | failures / interval | counter |
| `consul.serf.member.flap` | Available in Consul 0.7 and later, this increments when an agent is marked dead and then recovers within a short time period. This can be an indicator of overloaded agents, network problems, or configuration errors where agents cannot connect to each other on the [required ports](/docs/agent/config/config-files#ports). | flaps / interval | counter |
| `consul.serf.member.join` | Increments when an agent joins the cluster. If an agent flapped or failed this counter also increments when it re-joins. | joins / interval | counter |
@ -695,9 +699,9 @@ agent. The table below describes the additional metrics exported by the proxy.
[Cluster peering](/docs/connect/cluster-peering) refers to Consul clusters that communicate through a peer connection, as opposed to a federated connection. Consul collects metrics that describe the number of services exported to a peered cluster. Peering metrics are only emitted by the leader server. These metrics are emitted every 9 seconds.
| Metric | Description | Unit | Type |
| ------------------------------------- | ----------------------------------------------------------------------| ------ | ------- |
| `consul.peering.exported_services` | Counts the number of services exported with [exported service configuration entries](/docs/connect/config-entries/exported-services) to a peer cluster. | count | gauge |
| Metric | Description | Unit | Type |
| ------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------ | ------- |
| `consul.peering.exported_services` | Counts the number of services exported with [exported service configuration entries](/docs/connect/config-entries/exported-services) to a peer cluster. | count | gauge |
| `consul.peering.healthy` | Tracks the health of a peering connection as reported by the server. If Consul detects errors while sending or receiving from a peer which do not recover within a reasonable time, this metric returns 0. Healthy connections return 1. | health | gauge |
### Labels
@ -709,3 +713,4 @@ Consul attaches the following labels to metric values.
| `peer_name` | The name of the peering on the reporting cluster or leader. | Any defined peer name in the cluster |
| `peer_id` | The ID of a peer connected to the reporting cluster or leader. | Any UUID |
| `partition` | <EnterpriseAlert inline /> Name of the partition that the peering is created in. | Any defined partition name in the cluster |