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AWS Deployment with Chef Managed Database

Note

Chef Automate 4.10.1 released on 6th September 2023 includes improvements to the deployment and installation experience of Automate HA. Please read the blog to learn more about key improvements. Refer to the pre-requisites page (On-Premises, AWS) and plan your usage with your customer success manager or account manager.

Follow the steps below to deploy Chef Automate High Availability (HA) on AWS (Amazon Web Services) cloud. Please see the AWS Deployment Prerequisites page and move ahead with the following sections of this page.

Warning

  • Do not modify the workspace path. It should always be /hab/a2_deploy_workspace.
  • We currently don’t support AD managed users in nodes. We only support local Linux users.
  • If you have configured a sudo password for the user, you must create an environment variable sudo_password and set the password as the variable’s value. Example: export sudo_password=<password>. And then, run all sudo commands with the sudo -E or --preserve-env option. Example: sudo -E ./chef-automate deploy config.toml --airgap-bundle automate.aib. This is required for the chef-automate CLI to run the commands with sudo privileges. Please refer this for details.
  • If SELinux is enabled, deployment with configure it to permissive (Usually in case of RHEL SELinux is enabled)

Deployment

Run the following steps on Bastion Host Machine:

Note

  • Ensure the bastion machine is in the same vpc as in config.toml. Otherwise, we need to do vpc peering.
  • Use subnet-id instead of CIDR block in config.toml, to avoid the subnet conflict. If we use a CIDR block, will fail if a consecutive cidr block is not available.
  • If you choose backup_config as s3, provide the bucket name to field s3_bucketName. If s3_bucketName exists, it is directly used for backup configuration, and if it doesn’t exist, then the deployment process will create s3_bucketName.
  • If you choose backup_config as efs, we will create the EFS and mount it on all frontend and backend nodes.
  • If you choose backup_config as " " (empty), you have to manually do the backup configuration after the deployment. But we recommended that to use backup_config be set to s3 or efs at the time of deployment.

  1. Run the below commands to download the latest Automate CLI and Airgapped Bundle:

    #Run commands as sudo.
sudo -- sh -c "
#Download Chef Automate CLI.
curl https://packages.chef.io/files/current/latest/chef-automate-cli/chef-automate_linux_amd64.zip \
| gunzip - > chef-automate && chmod +x chef-automate \
| cp -f chef-automate /usr/bin/chef-automate
#Download the latest Airgapped Bundle.
#To download specific version bundle, example version: 4.2.59 then replace latest.aib with 4.2.59.aib
curl https://packages.chef.io/airgap_bundle/current/automate/latest.aib -o automate.aib
"

    Note

    Chef Automate bundles are available for 365 days from the release of a version. However, the milestone release bundles are available for download forever.

Steps to Generate Config

  1. Generate a configuration file with relevant data.

    chef-automate config gen config.toml

    Click here to know more about generating config

    Note

    You can also generate a configuration file using the init-config subcommand.

    chef-automate init-config-ha aws

Steps to Provision

  1. Continue with the provisioning of the infra after generating the config:

    chef-automate provision-infra config.toml --airgap-bundle automate.aib

    Note

    Once the provisioning is successful, if you have added custom DNS to your configuration file (fqdn), make sure to map the load-balancer FQDN from the output of the previous command to your DNS from DNS Provider

Config Verify

  1. After successful provision, run verify config command:

    sudo chef-automate verify -c config.toml

    To know more about config verify, you can check Config Verify Doc page.

Steps to Deploy

  1. The following command will run the deployment. The deployment command will run the verify command internally, to skip a verification process during deploy command use --skip-verify flag

     chef-automate deploy config.toml --airgap-bundle automate.aib

    To skip verification in the deployment command, use --skip-verify flag

     chef-automate deploy config.toml --airgap-bundle automate.aib --skip-verify

Verify Deployment

  1. Once the deployment is successful, Get the consolidated status of the cluster

     chef-automate status summary

  2. Get the service status from each node

     chef-automate status

  3. Post Deployment, you can run the verification command

     chef-automate verify

  4. Get the cluster Info

     chef-automate info

  5. After the deployment is completed. To view the Automate UI, run the command chef-automate info, and you will get the automate_url. If you want to change the FQDN URL from the load balancer URL to some other FQDN URL, then use the below template.

  • Create a file a2.fqdn.toml

    [Global]
 [global.v1]
  fqdn = "AUTOMATE-DNS-URL-WITHOUT-HTTP"

  • Run the command to apply the config from the bastion

     chef-automate config patch a2.fqdn.toml --automate

  • Create a file cs.fqdn.toml

    [global]
 [global.v1]
  fqdn = "AUTOMATE-DNS-URL-WITHOUT-HTTPS"
[global.v1.external.automate]
  node = "https://AUTOMATE-DNS-URL"

  • Run the command to apply the config from the bastion

     chef-automate config patch cs.fqdn.toml --chef_server

Note

DNS should have entries for chefautomate.example.com and chefinfraserver.example.com pointing to respective Load Balancers as shown in the chef-automate info command.

Check if Chef Automate UI is accessible by going to (Domain used for Chef Automate) https://chefautomate.example.com.

After successful deployment, proceed with the following:

  1. Create user and orgs, Click here to learn more about user and org creation
  2. Workstation setup, Click here to learn more about workstation setup
  3. Node bootstrapping, Click here to learn more about node bootstrapping.

Sample Config

Note

Assuming 10+1 nodes (1 bastion, 2 for Automate UI, 2 for Chef-server, 3 for Postgresql, 3 for OpenSearch)

Note

  • User only needs to create/set up the bastion node with the IAM role of Admin access and S3 bucket access attached.
  • The following config will create an S3 bucket for backup.
  • To provide multiline certificates use triple quotes like """ multiline certificate contents"""
[architecture]
  [architecture.aws]
    ssh_user = "ec2-user"
    ssh_group_name = "ec2-user"
    ssh_key_file = "/home/ec2-user/KEY_FILENAME.pem"
    ssh_port = "22"
    secrets_key_file = "/hab/a2_deploy_workspace/secrets.key"
    secrets_store_file = "/hab/a2_deploy_workspace/secrets.json"
    architecture = "aws"
    workspace_path = "/hab/a2_deploy_workspace"
    backup_mount = "/mnt/automate_backups"
    backup_config = "efs"
[automate]
  [automate.config]
    admin_password = "admin-password"
    fqdn = "chefautomate.example.com"
    config_file = "configs/automate.toml"
    root_ca = "-----BEGIN CERTIFICATE-----
    -----END CERTIFICATE-----"
    instance_count = "2"
[chef_server]
  [chef_server.config]
    fqdn = "chefserver.example.com"
    lb_root_ca = "-----BEGIN CERTIFICATE-----
    -----END CERTIFICATE-----"
    instance_count = "2"
[opensearch]
  [opensearch.config]
    instance_count = "3"
[postgresql]
  [postgresql.config]
    instance_count = "3"
[aws]
  [aws.config]
    profile = "default"  # This should be commented incase if IAM role is attached
    region = "us-east-2"
    aws_vpc_id = "vpc12318h"
    private_custom_subnets = ["subnet-e556d512", "subnet-e556d513", "subnet-e556d514"]
    public_custom_subnets = ["subnet-p556d512", "subnet-p556d513", "subnet-p556d514"]
    ssh_key_pair_name = "my-key"
    ami_id = "ami-0d629fdcxrc7746e4"
    delete_on_termination = true
    automate_server_instance_type = "m5.large"
    chef_server_instance_type = "m5.large"
    opensearch_server_instance_type = "m5.large"
    postgresql_server_instance_type = "m5.large"
    automate_lb_certificate_arn = "arn:aws:acm:ap-southeast-2:112758395563:certificate/9b04-6513-4ac5-9332-2ce4e"
    chef_server_lb_certificate_arn = "arn:aws:acm:ap-southeast-2:112758395563:certificate/9b04-6513-4ac5-9332-2ce4e"
    chef_ebs_volume_iops = "100"
    chef_ebs_volume_size = "200"
    chef_ebs_volume_type = "gp3"
    opensearch_ebs_volume_iops = "100"
    opensearch_ebs_volume_size = "200"
    opensearch_ebs_volume_type = "gp3"
    postgresql_ebs_volume_iops = "100"
    postgresql_ebs_volume_size = "200"
    postgresql_ebs_volume_type = "gp3"
    automate_ebs_volume_iops = "100"
    automate_ebs_volume_size = "210"
    automate_ebs_volume_type = "gp3"
    lb_access_logs = "true"

Uninstall Chef Automate HA

Danger

  • Running the clean-up command will remove all AWS resources created by the provision-infra command
  • Adding the --force flag will remove storage (Object Storage/ NFS) if it is created by provision-infra`.

To uninstall Chef Automate HA instances after successful deployment, run the below command in your bastion host. This will delete the AWS resources that are created during provision-infra.

chef-automate cleanup --aws-deployment --force

OR

chef-automate cleanup --aws-deployment

After the cleanup command, the following command can be used to remove the deployment workspace in the Bastion machine. This will also remove the logs file inside the workspace.

hab pkg uninstall chef/automate-ha-deployment
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