Tag: aws
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Packer Build: Timeout waiting for SSH
Back to basics. Building an AMI from the official Amazon Linux 2023 base AMI should be as easy as it gets. Packer 1.9.4 on Mac installed with brew. A simple build script. Nothing complicated. 80% of the time it would fail with this error: Timeout waiting for SSH. Further investigation showed that the AWS Session…
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EBS Volumes – deleteOnTermination ?
When using EC2 instances with EBS backed storage, whether or not your instances are setup to delete their EBS volumes on termination can be a big deal — especially if you burn AMIs and provision instances over and over. You could find yourself with many EBS volumes that are unused and pay for lots of…
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AWS VPC DB Security Group
The other day I was working with a client and creating a CloudFormation template that used RDS instances within a VPC. I found that while creating the DB security group object that I was getting an error like the following: STACK_EVENT CloudFormationName DBSecurityGroupName AWS::RDS::DBSecurityGroup 2012-12-17T22:30:20Z CREATE_FAILED Please see the documentation for authorizing DBSecurityGroup ingress. For…
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TLS Issue with Amazon OpenLDAP 2.4.23-15
Today I had an issue getting a good TLS connection from an OpenLDAP client to an OpenLDAP server on an EC2 instance using the packages supplied by Amazon. The problem packages were: openldap-2.4.23-15.13.amzn1.x86_64 openldap-clients-2.4.23-15.13.amzn1.x86_64 The problem was resolved through updating to version 2.4.23-20 via: yum -y update openldap-clients The problem was produced via the following…
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AWS Elastic Load Balancing in a Private Subnet
I recently learned a valuable lesson when setting up load balancing using an Elastic Load Balancer within a Virtual Private Cloud using public and private subnets and a NAT host. When creating the ELB, be sure to create it within the public subnets and not the private subnets where the instances that will be attached…