AWS ElastiCache Redis¶

Use the「Guance Synchronization」series script package in the script market to synchronize data from cloud monitoring cloud assets to the Guance.

Config¶

Install Func¶

Recommend opening 「Integrations - Extension - DataFlux Func (Automata)」: All preconditions are installed automatically, Please continue with the script installation

If you deploy Func yourself,Refer to

Installation script¶

Tip：Please prepare AWS AK that meets the requirements in advance（For simplicity's sake,，You can directly grant the global read-only permissionReadOnlyAccess）

To synchronize the monitoring data of ElastiCache Redis cloud resources, we install the corresponding collection script：「Guance Integration（AWS-ElastiCache Collect）」(ID：guance_aws_elasticache)

Click 【Install】 and enter the corresponding parameters: AWS AK, AWS account name.

tap【Deploy startup Script】，The system automatically creates Startup script sets，And automatically configure the corresponding startup script.

After this function is enabled, you can view the automatic triggering configuration in「Management / Crontab Config」.Click[Run],you can immediately execute once, without waiting for a regular time.After a while,you can view task execution records and corresponding logs.

We collected some configurations by default, as described in the Metrics column Configure custom cloud object metrics

Verify¶

In「Management / Crontab Config」check whether the automatic triggering configuration exists for the corresponding task,In addition, you can view task records and logs to check whether exceptions exist
On the Guance platform, click 「Infrastructure / Custom」 to check whether asset information exists
On the Guance platform, press 「Metrics」 to check whether monitoring data exists

Metric¶

Configure AWS Cloud - cloud monitoring. The default metric set is as follows. You can collect more metrics by configuring them Amazon CloudWatch Metrics Details

Host-level metrics¶

metric name	descriptive	unit	dimension
CPUUtilization	Percentage of CPU utilization for the entire host	%	name
FreeableMemory	The amount of free memory available on the host. This is derived from the RAM, buffers, and caches reported as free by the operating system.	byte	name
SwapUsage	The amount of switching zone usage on the host.	byte	name
NetworkBytesIn	The number of bytes the host has read from the network.	byte	name
NetworkBytesOut	The number of bytes sent by the instance on all network interfaces.	byte	name
NetworkPacketsIn	The number of packets received by the instance on all network interfaces. This metric identifies the amount of incoming traffic based on the number of packets on a single instance.	count	name
NetworkPacketsOut	The number of packets sent by the instance on all network interfaces. This metric identifies the amount of outgoing traffic based on the number of packets on a single instance.	count	name

Metrics for Redis¶

metric name	descriptive	unit	dimension
`ActiveDefragHits`	The number of value reassignments per minute performed by the active defragmentation process.	count	name
BytesUsedForCache	The total number of bytes in memory used for caching.	byte	name
CacheHits	The number of successful read-only key lookups in the main dictionary.	count	name
CacheMisses	The number of failed read-only key lookups in the main dictionary.	count	name
`CurrConnections`	The number of client connections, excluding connections from read-only copies.	count	name
`CurrItems`	The number of items in the cache.	count	name
`CurrVolatileItems`	The total number of keys with ttl sets in all databases.	count	name
DatabaseCapacityUsagePercentage	The percentage of the cluster's total data capacity that is in use.	%	name
DatabaseMemoryUsagePercentage	The percentage of memory being used in the cluster.	%	name
EngineCPUUtilization	Provides the CPU utilization of the Redis engine threads.	%	name
Evictions	The number of keys evicted due to max memory limitations.	count	name
IsMaster	Indicates whether the node is the master node of the current slice/cluster. The metric can be 0 (non-master node) or 1 (master node).	count	name
MasterLinkHealthStatus	This status has two values: 0 or 1. A value of 0 means that the data in the Elasticache master node is not synchronized with Redis on EC2. A value of 1 means that the data has been synchronized.	count	name
MemoryFragmentationRatio	Indicates the efficiency of the Redis engine's memory allocation.	count	name

Object¶

Collected AWS ElastiCache Redis object data structure, you can see the object data from the "Infrastructure - Customize"

{
  "measurement": "aws_elasticache",
  "tags": {
    "name"                     : "test",
    "CacheClusterId"           : "test",
    "CacheNodeType"            : "cache.t3.small",
    "Engine"                   : "redis",
    "EngineVersion"            : "6.2.5",
    "CacheClusterStatus"       : " available",
    "PreferredAvailabilityZone": "cn-northwest-1b",
    "ARN"                      : "arn:aws-cn:elasticache:cn-northwest-1:5881335135:cluster:test",
    "RegionId"                 : "cn-north-1"
  },
  "fields": {
    "SecurityGroups": "{SecurityGroups JSON data}}",
    "NumCacheNodes" : "1",
    "message"       : "{Instance JSON data}"
  }
}

Note: Fields in tags, fields are subject to change with subsequent updates.

Tip 1: The tags.name value is the instance ID, which serves as a unique identifier. Tip 2: fields.message, fields.NetworkInterfaces, and fields.BlockDeviceMappings are JSON serialized strings.