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Tencent Cloud Redis

Tencent Cloud Redis Metrics Display, including connections, requests, latency, slow queries, etc.

Configuration

Install Func

It is recommended to enable TrueWatch Integration - Expansion - Managed Func: All prerequisites are automatically installed. Please continue with the script installation.

If you deploy Func on your own, refer to Self-deployed Func

Installation Script

Note: Please prepare a Tencent Cloud AK that meets the requirements in advance (for simplicity, you can directly grant global read-only permissions ReadOnlyAccess).

To synchronize monitoring data for Tencent Cloud - Redis, we install the corresponding collection script: "TrueWatch Integration (Tencent Cloud - Redis Collection)" (ID: truewatch_tencentcloud_redis)

After clicking [Install], input the corresponding parameters: Tencent Cloud AK, Tencent Cloud account name.

Click [Deploy Startup Script], and the system will automatically create a Startup script set and automatically configure the corresponding startup script.

In addition, you can see the corresponding automatic trigger configuration in "Manage / Automatic Trigger Configuration". Click [Execute]to immediately execute it once without waiting for the scheduled time. After a short while, you can view the execution task records and corresponding logs.

We default collect some configurations, for more details see the metrics section Customize cloud object metrics

Verification

  1. In "Manage / Automatic Trigger Configuration", confirm whether the corresponding task has an automatic trigger configuration, and at the same time, you can check the corresponding task records and logs to see if there are any abnormalities.
  2. On the TrueWatch platform, under "Infrastructure / Custom", check if there is asset information.
  3. On the TrueWatch platform, under "Metrics", check if there are corresponding monitoring data.

Metrics

After configuring Tencent Cloud - Redis, the default metric sets are as follows. More metrics can be collected through configuration Tencent Cloud Monitoring Metrics Details

Redis Instance Monitoring

Metric English Name Metric Chinese Name Metric Description Unit Dimension Statistical Granularity
CpuUtil CPU Utilization Average CPU utilization % instanceid 5s, 60s, 300s, 3600s, 86400s
CpuMaxUtil Maximum Node CPU Maximum CPU usage of nodes (shards or replicas) within the instance % instanceid 5s, 60s, 300s, 3600s, 86400s
MemUsed Memory Usage Actual memory capacity used, including data and cache parts MB instanceid 5s, 60s, 300s, 3600s, 86400s
MemUtil Memory Utilization Ratio of actual memory used to total requested memory % instanceid 5s, 60s, 300s, 3600s, 86400s
MemMaxUtil Maximum Node Mem Maximum memory usage of nodes (shards or replicas) within the instance % instanceid 5s, 60s, 300s, 3600s, 86400s
Keys Total Keys Total number of keys stored in the instance (first-level keys) Count instanceid 5s, 60s, 300s, 3600s, 86400s
Expired Expired Keys Number of keys evicted within the time window, corresponding to expired_keys from the info command output Count instanceid 5s, 60s, 300s, 3600s, 86400s
Evicted Evicted Keys Number of keys evicted within the time window, corresponding to evicted_keys from the info command output Count instanceid 5s, 60s, 300s, 3600s, 86400s
Connections Connection Count Number of TCP connections connected to the instance Count instanceid 5s, 60s, 300s, 3600s, 86400s
ConnectionsUtil Connection Utilization Ratio of actual TCP connections to maximum connections % instanceid 5s, 60s, 300s, 3600s, 86400s
InFlow Incoming Flow Internal network incoming flow Mb/s instanceid 5s, 60s, 300s, 3600s, 86400s
InBandwidthUtil Incoming Flow Utilization Ratio of actual internal network incoming flow to maximum flow % instanceid 5s, 60s, 300s, 3600s, 86400s
InFlowLimit Incoming Flow Limit Trigger Number of times the incoming flow triggers rate limiting Count instanceid 5s, 60s, 300s, 3600s, 86400s
OutFlow Outgoing Flow Internal network outgoing flow Mb/s instanceid 5s, 60s, 300s, 3600s, 86400s
OutBandwidthUtil Outgoing Flow Utilization Ratio of actual internal network outgoing flow to maximum flow % instanceid 5s, 60s, 300s, 3600s, 86400s
OutFlowLimit Outgoing Flow Limit Trigger Number of times the outgoing flow triggers rate limiting Count instanceid 5s, 60s, 300s, 3600s, 86400s
LatencyAvg Average Execution Latency Average execution latency from Proxy to Redis Server ms instanceid 5s, 60s, 300s, 3600s, 86400s
LatencyMax Maximum Execution Latency Maximum execution latency from Proxy to Redis Server ms instanceid 5s, 60s, 300s, 3600s, 86400s
LatencyRead Average Read Latency Average execution latency of read commands from Proxy to Redis Server ms instanceid 5s, 60s, 300s, 3600s, 86400s
LatencyWrite Average Write Latency Average execution latency of write commands from Proxy to Redis Server ms instanceid 5s, 60s, 300s, 3600s, 86400s
LatencyOther Average Other Commands Latency Average execution latency of commands other than read/write from Proxy to Redis Server ms instanceid 5s, 60s, 300s, 3600s, 86400s
Commands Total Requests QPS, number of command executions Times/second instanceid 5s, 60s, 300s, 3600s, 86400s
CmdRead Read Requests Number of read command executions per second Times/second instanceid 5s, 60s, 300s, 3600s, 86400s
CmdWrite Write Requests Number of write command executions per second Times/second instanceid 5s, 60s, 300s, 3600s, 86400s
CmdOther Other Requests Number of command executions other than read/write per second Times/second instanceid 5s, 60s, 300s, 3600s, 86400s
CmdBigValue Big Value Requests Number of command executions exceeding 32KB per second Times/second instanceid 5s, 60s, 300s, 3600s, 86400s
CmdKeyCount Key Request Count Number of keys accessed by the command Keys/second instanceid 5s, 60s, 300s, 3600s, 86400s
CmdMget Mget Request Count Number of Mget command executions Keys/second instanceid 5s, 60s, 300s, 3600s, 86400s
CmdSlow Slow Queries Number of commands executed with latency greater than slowlog - log - slower - than configuration Count instanceid 5s, 60s, 300s, 3600s, 86400s
CmdHits Read Hits Number of existing keys for read requests, corresponding to keyspace_hits from info command output Count instanceid 5s, 60s, 300s, 3600s, 86400s
CmdMiss Read Misses Number of non-existing keys for read requests, corresponding to keyspace_misses from info command output Count instanceid 5s, 60s, 300s, 3600s, 86400s
CmdErr Execution Errors Number of command execution errors, such as non-existent commands, parameter errors, etc. Count instanceid 5s, 60s, 300s, 3600s, 86400s
CmdHitsRatio Read Hit Rate Hits / (Hits + Miss), this metric reflects Cache Miss situation % instanceid 5s, 60s, 300s, 3600s, 86400s

Overview of Parameters Corresponding to Each Dimension

Parameter Name Dimension Name Dimension Explanation Format
Instances.N.Dimensions.0.Name instanceid Instance ID dimension name Input String type dimension name: instanceid
Instances.N.Dimensions.0.Value instanceid Specific instance ID Input specific Redis instance ID, e.g., tdsql-123456, or instance serial number, e.g., crs-ifmymj41. You can query via Query Redis Instance List Interface
Instances.N.Dimensions.1.Name rnodeid Redis node ID dimension name Input String type dimension name: rnodeid
Instances.N.Dimensions.1.Value rnodeid Specific Redis node ID Input specific Redis node ID, obtainable via Query Instance Node Information interface
Instances.N.Dimensions.1.Name pnodeid Proxy node ID dimension name Input String type dimension name: pnodeid
Instances.N.Dimensions.1.Value pnodeid Specific proxy node ID Input specific proxy node ID, obtainable via Query Instance Node Information interface
Instances.N.Dimensions.1.Name command Command word dimension name Input String type dimension name: command
Instances.N.Dimensions.1.Value command Specific command word Input specific command word, e.g., ping, get, etc.

Input Parameter Explanation

To query Redis instance monitoring data, input parameters are as follows: &Namespace=QCE/REDIS_MEM &Instances.N.Dimensions.0.Name=instanceid &Instances.N.Dimensions.0.Value=Instance ID

To query Proxy node monitoring data, input parameters are as follows: &Namespace=QCE/REDIS_MEM &Instances.N.Dimensions.0.Name=instanceid &Instances.N.Dimensions.0.Value=Instance ID &Instances.N.Dimensions.1.Name=pnodeid &Instances.N.Dimensions.1.Value=Proxy node ID

To query Redis node monitoring data, input parameters are as follows: &Namespace=QCE/REDIS_MEM &Instances.N.Dimensions.0.Name=instanceid &Instances.N.Dimensions.0.Value=Instance ID &Instances.N.Dimensions.1.Name=rnodeid &Instances.N.Dimensions.1.Value=Redis node ID

To query Redis latency metrics (command dimension) monitoring data, input parameters are as follows: &Namespace=QCE/REDIS_MEM &Instances.N.Dimensions.0.Name=instanceid &Instances.N.Dimensions.0.Value=Instance ID &Instances.N.Dimensions.1.Name=command &Instances.N.Dimensions.1.Value=Specific command word

Object

The structure of collected Tencent Cloud Redis object data can be viewed in "Infrastructure - Custom"

{
  "measurement": "tencentcloud_redis",
  "tags": {
    "name": "crs-xxxx",
    "BillingMode": "0",
    "Engine": "Redis",
    "InstanceId": "crs-xxxx",
    "InstanceName": "solution",
    "Port": "6379",
    "ProductType": "standalone",
    "ProjectId": "0",
    "RegionId": "ap-shanghai",
    "Status": "2",
    "Type": "6",
    "WanIp": "172.x.x.x",
    "ZoneId": "200002"
  },
  "fields": {
    "ClientLimits": "10000",
    "Createtime": "2022-07-14 13:54:14",
    "DeadlineTime": "0000-00-00 00:00:00",
    "InstanceNodeInfo": "{Instance node information}",
    "InstanceTitle": "Running",
    "Size": 1024,
    "message": "{Instance JSON data}"
  }
}

Logs

Slow Query Statistics

Prerequisites for Slow Query Statistics

Note 1: The code execution of this script depends on Redis instance object collection. If Redis custom object collection is not configured, the slow log script cannot collect slow log data.

Slow Query Statistics Installation Script

Based on the previous steps, another corresponding script needs to be installed for RDS Slow Query Statistics Log Collection

In "Management / Script Market", click and install the corresponding script package:

  • "TrueWatch Integration (Tencent Cloud - Redis Slow Query Log Collection)" (ID: truewatch_tencentcloud_redis_slowlog)

After data synchronization is normal, you can view the data in the "Logs" section of TrueWatch.

An example of the reported data is as follows:

{
  "measurement": "tencentcloud_redis_slow_log",
  "tags": {
    "BillingMode": "0",
    "Client": "",
    "Engine": "Redis",
    "InstanceId": "crs-rha4zlon",
    "InstanceName": "crs-rha4zlon",
    "Node": "6d5d8cc6fxxxx",
    "Port": "6379",
    "ProductType": "standalone",
    "ProjectId": "0",
    "RegionId": "ap-shanghai",
    "Status": "2",
    "Type": "8",
    "WanIp": "172.17.0.9",
    "ZoneId": "200002",
    "name": "crs-xxxx"
  },
  "fields": {
    "Command": "config",
    "CommandLine": "config get whitelist-ips",
    "Duration": 1,
    "ExecuteTime": "2022-07-22 18:00:28",
    "message": "{Instance JSON data}"
  }
}

Part of the parameter explanation is as follows:

Field Type Description
Duration Integer Slow query duration
Client String Client address
Command String Command
CommandLine String Detailed command line information
ExecuteTime String Execution time
Node String Node ID

Note: Fields in tags and fields may change with subsequent updates. Note 1: The value of tags.name is the instance ID, which serves as a unique identifier. Note 2: fields.message is a JSON serialized string.