1. Answers
  2. Using AWS X-Ray with Redis

How do I use AWS X-Ray with Redis?

In this guide, we will set up AWS X-Ray to monitor a Redis instance. AWS X-Ray helps with debugging and analyzing applications by tracing requests as they travel through the system. We will create a Redis instance and enable AWS X-Ray for monitoring.

Key Points:

  • Set up a Redis instance on AWS.
  • Enable AWS X-Ray for tracing and monitoring.
  • Use Pulumi to define and deploy the infrastructure.
import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create an AWS VPC
const vpc = new aws.ec2.Vpc("myVpc", {
    cidrBlock: "10.0.0.0/16",
    enableDnsHostnames: true,
    enableDnsSupport: true,
});

// Create a subnet in the VPC
const subnet = new aws.ec2.Subnet("mySubnet", {
    vpcId: vpc.id,
    cidrBlock: "10.0.1.0/24",
    availabilityZone: "us-west-2a",
});

// Create a security group for the Redis instance
const securityGroup = new aws.ec2.SecurityGroup("redisSecurityGroup", {
    vpcId: vpc.id,
    ingress: [
        {
            protocol: "tcp",
            fromPort: 6379,
            toPort: 6379,
            cidrBlocks: ["0.0.0.0/0"],
        },
    ],
    egress: [
        {
            protocol: "tcp",
            fromPort: 0,
            toPort: 0,
            cidrBlocks: ["0.0.0.0/0"],
        },
    ],
});

// Create a Redis instance
const redis = new aws.elasticache.Cluster("myRedis", {
    clusterId: "my-redis-cluster",
    engine: "redis",
    nodeType: "cache.t2.micro",
    numCacheNodes: 1,
    parameterGroupName: "default.redis3.2",
    port: 6379,
    subnetGroupName: new aws.elasticache.SubnetGroup("redisSubnetGroup", {
        subnetIds: [subnet.id],
    }).name,
    securityGroupIds: [securityGroup.id],
});

// Create an IAM role for AWS X-Ray
const xrayRole = new aws.iam.Role("xrayRole", {
    assumeRolePolicy: aws.iam.assumeRolePolicyForPrincipal({ Service: "xray.amazonaws.com" }),
});

// Attach the AWS X-Ray policy to the role
const xrayPolicyAttachment = new aws.iam.RolePolicyAttachment("xrayPolicyAttachment", {
    role: xrayRole,
    policyArn: "arn:aws:iam::aws:policy/AWSXRayDaemonWriteAccess",
});

// Create an X-Ray group
const xrayGroup = new aws.xray.Group("xrayGroup", {
    filterExpression: "service(\"redis\")",
    groupName: "redis-group",
});

// Export the Redis endpoint and X-Ray group URL
export const redisEndpoint = redis.cacheNodes.apply(nodes => nodes[0].address);
export const xrayGroupUrl = pulumi.interpolate`https://console.aws.amazon.com/xray/home#/groups/${xrayGroup.groupName}`;

Summary

In this guide, we created an AWS VPC, a subnet, and a security group for our Redis instance. We then set up a Redis instance within the subnet. Additionally, we created an IAM role and attached the necessary policy for AWS X-Ray. Finally, we created an X-Ray group to monitor our Redis instance and exported the Redis endpoint and X-Ray group URL. This setup allows us to trace and debug requests to our Redis instance using AWS X-Ray.

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