What should the permissions of a key pair (.pem file) be before connecting to an EC2 instance?

To fix the Service limit exceed error while launching an EC2 instance in AWS, you need to check and adjust the service limits of your account. Navigate to the AWS Service Quotas page in the AWS Management Console, locate the relevant EC2 service limit, and request for an increased limit.

Here are the available CloudWatch metrics for EC2 instances in AWS:

• CPUUtilization
• DiskWriteOps
• DiskReadOps
• DiskWriteBytes
• DiskReadBytes
• NetworkIn
• MetadataNoToken
• NetworkPacketsIn
• NetworkPacketsOut
• NetworkOut

There are two types of volumes for EC2 instances in AWS:

• Amazon Elastic Block Store (EBS) Volumes: EBS volumes are storage units that can be attached to EC2 instances. They provide reliable and long-lasting storage, with features like encryption and snapshots. You can create and attach them independently, as they offer different performance options.
• Instance Store Volumes: Instance store volumes are stored directly on the physical server, hosting the EC2 instance. They provide temporary storage with high I/O performance. However, the data stored on these volumes is lost if the instance is stopped, terminated, or if there is a hardware failure.

EC2 instances in AWS have different pricing models based on various factors like type, region, pricing options (On-Demand, Reserved, or Spot), and usage duration.

One can use Palo Alto Networks Prisma Access's SaaS Security Inline to detect and manage risks from unsanctioned SaaS apps.

SaaS Security Inline gives user’s visibility into software-as-a-service (SaaS) applications and helps them in identifying cloud-based threats.