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justinretzolk
bas-kirill
This issue was originally opened by @jwlogemann as hashicorp/terraform#23246. It was migrated here as a result of the provider split. The original body of the issue is below.
Hi, I've made some changes to my user-data script, which do not get applied by terraform to the EC2 instances. It appears to cache some old version of the script, and keeps applying that, instead of looking for local changes.
Terraform Version
Terraform v0.12.12
Terraform Configuration Files
ec2.tf: resource "aws_instance" "ec2_instance" { ... user_data = templatefile("${path.module}/../shared-templates/user-data.sh", { log_group = aws_cloudwatch_log_group.ec2_log_group.name additional_user_data = var.additional_user_data }) ... } first part of the user-data script:
!/bin/bash
Save script output
set -x exec > >(tee /var/log/user-data.log|logger -t user-data ) 2>&1 echo BEGIN date '+%Y-%m-%d %H:%M:%S'
OS_NAME=$(cat /etc/os-release | grep ^NAME | cut -d '"' -f2 | cut -d ' ' -f1) INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id) LOG_GROUP="${log_group}" REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep '\"region\"' | cut -d\" -f4)
Relevant part of tfstate: { "module": "module.b2b_db2", "mode": "data", "type": "template_file", "name": "ec2_userdata", "provider": "provider.template", "instances": [ { "schema_version": 0, "attributes": { "filename": null, "id": "353e47d81936964543a43f677ac73701fec92eca5ff52074599ce675270b685e", "rendered": "#!/bin/sh\n# Stream instance logs to CloudWatch Logs\nset -x\nOS_NAME=$(cat /etc/os-release|grep ^NAME|cut -d '\"' -f2|cut -d ' ' -f1)\ngrep '/var/log/cfn-hup.log' /etc/awslogs/awslogs.conf\nif [ $? -ne 0 ]; then\n INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)\n LOG_GROUP=\"/ec2/b2b-DB2-instance-log-group\"\n REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep '\\"region\\"' | cut -d\\" -f4)\n # install the awslogs package\n if [$OS_NAME == \"Redhat\"] || [ $OS_NAME == \"CentOS\" ] || [ $OS_NAME == \"Amazon\" ];then\n yum install -y aws-cli awslogs\n elif [ $OS_NAME == \"Ubuntu\"]; then\n apt-get update \u0026\u0026 apt-get install awscli awslogs\n else\n echo \"unsupported OS\"\n fi\nfi\n\n# update awscli.conf with regions where logs to be sent\ngrep 'region = ' /etc/awslogs/awscli.conf\nif [ $? -ne 0 ]; then\n echo \"region = ${REGION}\" \u003e\u003e /etc/awslogs/awscli.conf\n else\n sed -i \"s/region = ./region = ${REGION}/g\" /etc/awslogs/awscli.conf\nfi\n\n# adding other log files\n\nfor log in $(find /var -iname \*.log -o -name messages|tr '\n' ' ');\ndo\n echo -e \"\n[${log}]\\n \nfile = ${log}\\n \nlog_group_name = ${LOG_GROUP}\\n \nlog_stream_name = ${INSTANCEID}${log}\\n \ninitial_position = start_of_file\\n \ndatetime_format = %b %d %H:%M:%S\\n \nbuffer_duration = 5000\" \u003e\u003e /etc/awslogs/awslogs.conf\ndone\n\n# enable awslogd service\nsystemctl enable awslogsd\n# restart awslogs service\nsystemctl restart awslogsd\n# enable awslogs service to start on system boot\nchkconfig awslogsd on\n# Additional user data\necho \"Running additional user data - setting up DB2 instance.\"\n\necho \"Mounting EFS data volume\"\nmkdir /data\nmount -t efs -o tls fs-94c4ddcd:/ /data\n", "template": "#!/bin/sh\n# Stream instance logs to CloudWatch Logs\nset -x\nOS_NAME=$(cat /etc/os-release|grep ^NAME|cut -d '\"' -f2|cut -d ' ' -f1)\ngrep '/var/log/cfn-hup.log' /etc/awslogs/awslogs.conf\nif [ $? -ne 0 ]; then\n INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)\n LOG_GROUP=\"${log_group}\"\n REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep '\\"region\\"' | cut -d\\" -f4)\n # install the awslogs package\n if [$OS_NAME == \"Redhat\"] || [ $OS_NAME == \"CentOS\" ] || [ $OS_NAME == \"Amazon\" ];then\n yum install -y aws-cli awslogs\n elif [ $OS_NAME == \"Ubuntu\"]; then\n apt-get update \u0026\u0026 apt-get install awscli awslogs\n else\n echo \"unsupported OS\"\n fi\nfi\n\n# update awscli.conf with regions where logs to be sent\ngrep 'region = ' /etc/awslogs/awscli.conf\nif [ $? -ne 0 ]; then\n echo \"region = $${REGION}\" \u003e\u003e /etc/awslogs/awscli.conf\n else\n sed -i \"s/region = ./region = $${REGION}/g\" /etc/awslogs/awscli.conf\nfi\n\n# adding other log files\n\nfor log in $(find /var -iname \*.log -o -name messages|tr '\n' ' ');\ndo\n echo -e \"\n[$${log}]\\n \nfile = $${log}\\n \nlog_group_name = $${LOG_GROUP}\\n \nlog_stream_name = $${INSTANCEID}$${log}\\n \ninitial_position = start_of_file\\n \ndatetime_format = %b %d %H:%M:%S\\n \nbuffer_duration = 5000\" \u003e\u003e /etc/awslogs/awslogs.conf\ndone\n\n# enable awslogd service\nsystemctl enable awslogsd\n# restart awslogs service\nsystemctl restart awslogsd\n# enable awslogs service to start on system boot\nchkconfig awslogsd on\n# Additional user data\n${additional_user_data}\n", "vars": { "additional_user_data": "echo \"Running additional user data - setting up DB2 instance.\"\n\necho \"Mounting EFS data volume\"\nmkdir /data\nmount -t efs -o tls fs-94c4ddcd:/ /data", "log_group": "/ec2/b2b-DB2-instance-log-group" } },
Note that the userdata script is completely different. The local one starts with #!/bin/bash, and the tfstate one with #!/bin/sh for instance
Debug Output
https://drive.google.com/file/d/1IRYu14QYnKhjlPW5S2G4JDDM9MzaEeV_/view?usp=sharing
Expected Behavior
New user-data should have been applied
Actual Behavior
Terraform did not change anything
Steps to Reproduce
terraform initterraform apply