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[AGENTLESS] Remove previously installed kernels after security upgrades #234

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[AGENTLESS] Remove previously installed kernels after security upgrades #234

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006da8b
[AGENTLESS] Remove previously installed kernels after security upgrades
0intro Aug 1, 2025
47386a3
configure unattended-upgrade to also autoremove
jinroh Aug 4, 2025
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7 changes: 6 additions & 1 deletion aws_quickstart/datadog_agentless_scanning.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@ Parameters:
Type: String
Description: Your current AWS account ID for stack deployment
AllowedPattern: "^[0-9]{12}$"

AgentlessHostScanning:
Type: String
AllowedValues:
Expand Down Expand Up @@ -333,6 +333,9 @@ Resources:
# Perform unattended upgrades
unattended-upgrade -v

# Remove previously installed kernels after security upgrades
apt autoremove -y --purge

# Get IMDS metadata to fetch the API Key from SecretsManager (without having to install awscli)
IMDS_TOKEN=$( curl -sSL -XPUT "http://169.254.169.254/latest/api/token" -H "X-AWS-EC2-Metadata-Token-TTL-Seconds: 30")
IMDS_INSTANCE_ID=$(curl -sSL -XGET "http://169.254.169.254/latest/meta-data/instance-id" -H "X-AWS-EC2-Metadata-Token: $IMDS_TOKEN")
Expand Down Expand Up @@ -374,6 +377,8 @@ Resources:
Unattended-Upgrade::Automatic-Reboot "true";
Unattended-Upgrade::Automatic-Reboot-WithUsers "true";
Unattended-Upgrade::Automatic-Reboot-Time "now";
Unattended-Upgrade::Remove-Unused-Dependencies "true";
Unattended-Upgrade::Remove-Unused-Kernel-Packages "true";
EOF

# Perform unattended upgrades 10 min after boot, then every 3 hours
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