Best experience with the AWS MCP server; also works with the AWS CLI alone — no hard dependency on either.
Critical Warnings
Launch configurations are deprecated
and do not support current EC2 instance types; new accounts cannot create them. Use launch templates for every new Auto Scaling group. See
auto-scaling.md
.
ASGs ignore ELB health checks by default
An Auto Scaling group only uses EC2 status checks unless you set
--health-check-type ELB
. Without it, instances failing the load balancer's health check stay in service forever. See
auto-scaling.md
.
IMDSv2 hop limit breaks containers
the default
HttpPutResponseHopLimit
of 1 makes the IMDSv2 token PUT response fail to reach a containerized process (the extra hop exceeds the response TTL), so the token request times out. Set
HttpPutResponseHopLimit=2
for bridge/awsvpc container workloads. (If IMDSv2 is
required
, a subsequent tokenless GET returns
401
; if optional, it silently falls back to IMDSv1.) See
provisioning.md
.
T3/T3a/T4g default to unlimited mode
Unlike T2 (standard), these burst without throttling but bill surplus CPU credits when 24h-average CPU exceeds baseline — a silent cost leak. See
instance-selection.md
.
Instance store is ephemeral
Data on instance store volumes is lost on stop, hibernate, terminate, instance-type change, and host failure — it survives only a reboot. Put anything durable on EBS/EFS/S3. See
instance-selection.md
.
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Installs
830
Repository
aws/agent-toolk…-for-aws
GitHub Stars
2.2K
First Seen
13 days ago
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