Istio is an open source independent service mesh that provides the fundamentals you need to successfully run a distributed microservice architecture. As organizations increasingly adopt cloud platforms, developers have to architect for portability using microservices, while operators have to manage large distributed deployments that span hybrid and multi-cloud deployments. Istio reduces complexity of managing microservice deployments by providing a uniform way to secure, connect, and monitor microservices.
Prerequisites for monitoring Istio metrics: Click here
Using the REST API to add a new Istio monitor: Click here
Follow the steps given below to create a new Istio monitor:
Go to the Monitors Category View by clicking the Monitors tab. Click on Istio under the Services table. Displayed is the Istio bulk configuration view distributed into three tabs:
On clicking a monitor from the list, you'll be taken to the Istio monitor dashboard. It has 8 tabs -
Note: Tabs/Metrics marked with an * will be shown only for Istio versions below 1.5.0.
| Parameter | Description |
|---|---|
| ISTIO DETAILS | |
| Namespace | Namespace of the Istio server. |
| Status | Status of the Istio namespace. (Active or Inactive) |
| No. of Istio Pods | Number of pods running under Istio namespace. |
| Version | Version of the Istio namespace. |
| ISTIO COMPONENT DETAILS * | |
| Citadel Count | Number of Citadel instances running per component. |
| Galley Count | Number of Galley instances running per component. |
| Mixer Count | Number of Mixer instances running per component. |
| Pilot Count | Number of Pilot instances running per component. |
| ISTIOD COMPONENT DETAILS | |
| Istiod count | Number of instances (replicas) running per component. |
| Istio Pod Details | |
| Pod Name | Name of Istio pod. |
| Pod Type | Type of the Istio pod. |
| Pod status | Status of the Istio pod. |
| Deployed Node | Node (host) of the deployed Istio pod. |
| ISTIO MCP RECONNECTIONS | |
| Avg. sink reconnections | Number of times the sink has reconnected. |
| ISTIO MCP RECEIVE FAILURES | |
| Receive Failures in Source | Number of mesh connection receive failures in the source. |
| ISTIO MCP RECEIVED ACKS | |
| Request acks. received by source | No. of request acknowledgments received by the source. |
| Parameter | Description |
|---|---|
| Citadel Certificate Details | |
| Pod Name | Name of Istio pod. |
| Certificates created for service account creation | Number of certificates created for service account creation. |
| Root Cert. Expiry | Date and time at which the root certificate will expire. |
| Days to expire | Number of days remaining for the certificate to expire. |
| CSR Count | Number of Certificate Signing Requests (CSR) made by the certificate. |
| gRPC Response Handled | |
| gRPC Code | Error status codes raised by the gRPC. |
| Response Handled | Number of response types handled by the gRPC. |
| Parameter | Description |
|---|---|
| Galley Instances * | |
| Instance URL | The URL of the instance. |
| Instances per URL | Number of instances running per URL. |
| Webhook Configuration and Validation Details | |
| Pod Name | Name of Istio pod. |
| Webhook Cert. Updates | Number of Webhook certificate updates received. |
| Config. loads | Number of Webhook configuration loads tried. |
| Config. updates | Number of Webhook configuration updates applied. |
| Config. errors | Number of Webhook configuration errors obtained while applying. |
| Passed Validation | Number of user configuration validation that has been passed. |
| Failed Validation | Number of user configuration validation that has been failed. |
| Galley Runtime Details | |
| Pod Name | Name of Istio pod. |
| Events processed | Number of events that have been processed. |
| Timer Resets | Number of times the timer has been reset. |
| Successful Event Handles | Number of times a Kubernetes source has successfully handled an event. |
| OnChange called | Number of configuration changes called by a Galley strategy. |
| Snapshots published | Number of snapshots published by a Galley strategy. |
| Parameter | Description |
|---|---|
| Mixer Configurations * | |
| Pod Name | Name of Istio pod. |
| Known Adapter Configs. | Number of known adapters encountered during processing of the adapter info configuration. |
| Known Instance Configs. | Number of known instance encountered during processing of the instance configuration. |
| Known Rule Configs. | Number of known rules encountered during processing of the rule configuration. |
| Known Template Config. | Number of known template encountered during processing of the template configuration. |
| Known Handler Configs. | Number of known handler encountered during processing of the handler configuration. |
| Mixer Config. Errors * | |
| Pod Name | Name of Istio pod. |
| Adapter Config. Errors | Number of errors encountered during processing of the adapter info configuration. |
| Instance Config. Errors | Number of errors encountered during processing of the instance configuration. |
| Template Config. Errors | Number of errors encountered during processing of the template configuration. |
| Reused Handlers | Number of handlers that were reused. |
| Handler Validation Errors | Number of errors encountered because handler validation returned error. |
| Mixer Handlers * | |
| Pod Name | Name of Istio pod. |
| Total Mixer Handler Daemons | Total number of Mixer handler daemons available. |
| Handlers failed at creation | Number of handlers that were failed at creation. |
| Handlers failed at closing | Number of handlers that were failed at closing. |
| Newly Created Handlers | Number of handlers that were newly created. |
| Reused Handlers | Number of handlers that were reused. |
| Parameter | Description |
|---|---|
| Inbound Listener Conflict Details | |
| Pod Name | Name of Istio pod. |
| Inbound Listener Conflicts | Number of inbound port conflicts found. |
| Outbound Listener Conflict Details | |
| Pod Name | Name of Istio pod. |
| HTTP over current TCP | Number of conflicting wildcard HTTP listeners with current wildcard TCP listener. |
| HTTP over HTTPS | Number of conflicting HTTP listeners with well-known HTTPS ports. |
| TCP over current HTTP | Number of conflicting wildcard TCP listeners with current wildcard HTTP listener. |
| TCP over current TCP | Number of conflicting TCP listeners with current TCP listener. |
| Pilot Service Details | |
| Pod Name | Name of Istio pod. |
| Pilot services known | Number of services known to Pilot. |
| Virtual services known | Number of virtual services known to Pilot. |
| Services with duplicated domains | Number of virtual services with duplicated domains. |
| Endpoints Connected using XDS | Number of endpoints connected to Pilot using xDS protocol. |
| PILOT XDS PUSHES | |
| Cluster Discovery Service | Number of configuration pushes for Cluster discovery services. |
| Endpoint Discovery Service | Number of configuration pushes for Endpoint discovery services. |
| Listener Discovery Service | Number of configuration pushes for Listener discovery services. |
| Route Discovery Service | Number of configuration pushes for Route discovery services. |
| AVG PROXY CONVERGENCE DELAY | |
| Avg. delay between config. change | Avg. delay between a configuration change and a proxy receiving all required configuration (in milliseconds). |
| Clusters and Endpoint Details | |
| Pod Name | Name of Istio pod. |
| Duplicate Envoy Clusters | Number of Duplicate envoy clusters caused by service entries with same host name. |
| Cluster without instances | Number of clusters without instances. |
| Unready endpoints | Number of endpoints found in unready state. |
| Parameter | Description |
|---|---|
| Go Memory Details | |
| Pod Name | Name of Istio pod. |
| Allocated Memory | Amount of memory allocated for an Istio pod (in MB). |
| Heap Available | Amount of heap memory available for use (in MB). |
| Heap In Use | Amount of heap memory currently in use (in MB). |
| Cache Available | Amount of cache memory available for use (in KB). |
| Cache In Use | Amount of cache memory currently in use (in KB). |
| Go Routines | Number of Go Routines that are running. |
| Go Threads | Number of OS Threads that are created. |
| Memory used for GC | Amount of memory used for Garbage Collection (in MB) |
| Memory targeted for next GC | Amount of memory targeted for next Garbage Collection (in MB) |
| Last Garbage Collection | Date and time at which Garbage Collection was last performed. |
| Parameter | Description |
|---|---|
| Process Details | |
| Pod Name | Name of Istio pod. |
| Opened File Descriptors | Number of open file descriptors in use. |
| Maximum File Descriptors | Maximum number of file descriptors available. |
| Free File Descriptors | Number of file descriptors that are unused. |
| Virtual Memory Size | Amount of virtual memory available (in MB). |
| Process Start Time | Date and time at which the process was started. |
| Total Running days | Total number of the days for which the process was running. |
| Parameter | Description |
|---|---|
| Incoming Traffic Details | |
| Workload name | Name of the workload. |
| Request count | Number of requests received between two intervals. |
| Failed requests | Number of failed requests received by the workload. |
| Avg. Request size | Avg. size of request received by the workload (in KB). |
| Avg. Response size | Avg. size of response sent by a workload (in KB). |
| Avg. Request duration | Avg. duration between a request and response (in seconds). |
