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feat: add docker autoscaler executor (#1118)
## Description Provides a new executor using the new GitLab autoscaler executor. I've been using the fleeting plugin for AWS only. Prerequisite: Docker must already be installed on the AMI used by worker machines (the Docker autoscaler does not install it, unlike the Docker machine). Additionally, the user used to connect to the workers must also be added to the Docker group. Related to issue #624 ## Verification Built an AMI with Docker based on Amazon Linux 2023. Set up the new executor according to the example. Works! --------- Co-authored-by: Matthias Kay <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| # | ||
| # This file is responsible for creating the resources needed to run the docker autoscaler plugin from GitLab. It replaces the | ||
| # outdated docker+machine driver. The docker+machine driver is a legacy driver that is no longer maintained by GitLab. | ||
| # | ||
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| resource "aws_security_group" "docker_autoscaler" { | ||
| count = var.runner_worker.type == "docker-autoscaler" ? 1 : 0 | ||
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| description = "Docker autoscaler security group" | ||
| vpc_id = var.vpc_id | ||
| name = "${local.name_sg}-docker-autoscaler" | ||
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| tags = merge( | ||
| local.tags, | ||
| { | ||
| "Name" = format("%s", local.name_sg) | ||
| }, | ||
| ) | ||
| } | ||
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| resource "aws_security_group_rule" "autoscaler_egress" { | ||
| count = var.runner_worker.type == "docker-autoscaler" ? 1 : 0 | ||
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| description = "All egress traffic docker autoscaler" | ||
| type = "egress" | ||
| from_port = 0 | ||
| to_port = 0 | ||
| protocol = "-1" | ||
| cidr_blocks = ["0.0.0.0/0"] | ||
| security_group_id = join("", aws_security_group.docker_autoscaler[*].id) | ||
| } | ||
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| resource "aws_security_group_rule" "autoscaler_ingress" { | ||
| count = var.runner_worker.type == "docker-autoscaler" ? 1 : 0 | ||
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| description = "All ingress traffic from runner security group" | ||
| type = "ingress" | ||
| from_port = 0 | ||
| to_port = 0 | ||
| protocol = "-1" | ||
| source_security_group_id = aws_security_group.runner.id | ||
| security_group_id = join("", aws_security_group.docker_autoscaler[*].id) | ||
| } | ||
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| resource "aws_security_group_rule" "extra_autoscaler_ingress" { | ||
| count = var.runner_worker.type == "docker-autoscaler" ? length(var.runner_worker_docker_autoscaler_asg.sg_ingresses) : 0 | ||
|
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| description = var.runner_worker_docker_autoscaler_asg.sg_ingresses[count.index].description | ||
| type = "ingress" | ||
| from_port = var.runner_worker_docker_autoscaler_asg.sg_ingresses[count.index].from_port | ||
| to_port = var.runner_worker_docker_autoscaler_asg.sg_ingresses[count.index].to_port | ||
| protocol = var.runner_worker_docker_autoscaler_asg.sg_ingresses[count.index].protocol | ||
| cidr_blocks = var.runner_worker_docker_autoscaler_asg.sg_ingresses[count.index].cidr_blocks | ||
| security_group_id = join("", aws_security_group.docker_autoscaler[*].id) | ||
| } | ||
|
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| #################################### | ||
| ###### Launch template Workers ##### | ||
| #################################### | ||
| resource "aws_launch_template" "this" { | ||
| count = var.runner_worker.type == "docker-autoscaler" ? 1 : 0 | ||
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| name = "${local.name_runner_agent_instance}-worker-launch-template" | ||
| user_data = base64gzip(var.runner_worker_docker_autoscaler_instance.start_script) | ||
| image_id = data.aws_ami.docker-autoscaler[0].id | ||
| instance_type = var.runner_worker_docker_autoscaler_asg.types[0] | ||
| key_name = aws_key_pair.autoscaler[0].key_name | ||
| ebs_optimized = var.runner_worker_docker_autoscaler_instance.ebs_optimized | ||
|
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| monitoring { | ||
| enabled = var.runner_worker_docker_autoscaler_instance.monitoring | ||
| } | ||
|
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| iam_instance_profile { | ||
| name = aws_iam_instance_profile.docker_autoscaler[0].name | ||
| } | ||
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| network_interfaces { | ||
| security_groups = [aws_security_group.docker_autoscaler[0].id] | ||
| associate_public_ip_address = !var.runner_worker_docker_autoscaler_instance.private_address_only | ||
| } | ||
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| block_device_mappings { | ||
| device_name = var.runner_worker_docker_autoscaler_instance.root_device_name | ||
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| ebs { | ||
| volume_size = var.runner_worker_docker_autoscaler_instance.root_size | ||
| volume_type = var.runner_worker_docker_autoscaler_instance.volume_type | ||
| iops = contains(["gp3", "io1", "io2"], var.runner_worker_docker_autoscaler_instance.volume_type) ? var.runner_worker_docker_autoscaler_instance.volume_iops : null | ||
| throughput = var.runner_worker_docker_autoscaler_instance.volume_type == "gp3" ? var.runner_worker_docker_autoscaler_instance.volume_throughput : null | ||
| } | ||
| } | ||
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| tag_specifications { | ||
| resource_type = "instance" | ||
| tags = local.tags | ||
| } | ||
|
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| tag_specifications { | ||
| resource_type = "volume" | ||
| tags = local.tags | ||
| } | ||
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| tags = local.tags | ||
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| metadata_options { | ||
| http_tokens = var.runner_worker_docker_autoscaler_instance.http_tokens | ||
| http_put_response_hop_limit = var.runner_worker_docker_autoscaler_instance.http_put_response_hop_limit | ||
| instance_metadata_tags = "enabled" | ||
| } | ||
|
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| lifecycle { | ||
| create_before_destroy = true | ||
| } | ||
| } | ||
|
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| ######################################### | ||
| # Autoscaling group with launch template | ||
| ######################################### | ||
| # false positive, tags are created with "dynamic" block | ||
| # kics-scan ignore-line | ||
| resource "aws_autoscaling_group" "autoscaler" { | ||
| count = var.runner_worker.type == "docker-autoscaler" ? 1 : 0 | ||
|
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| name = "${local.name_runner_agent_instance}-asg" | ||
| capacity_rebalance = false | ||
| protect_from_scale_in = true | ||
|
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| dynamic "launch_template" { | ||
| for_each = var.runner_worker_docker_autoscaler_asg.enable_mixed_instances_policy ? [] : [1] | ||
| content { | ||
| id = aws_launch_template.this[0].id | ||
| version = aws_launch_template.this[0].latest_version | ||
| } | ||
| } | ||
|
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| dynamic "mixed_instances_policy" { | ||
| for_each = var.runner_worker_docker_autoscaler_asg.enable_mixed_instances_policy ? [1] : [] | ||
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| content { | ||
| instances_distribution { | ||
| on_demand_base_capacity = var.runner_worker_docker_autoscaler_asg.on_demand_base_capacity | ||
| on_demand_percentage_above_base_capacity = var.runner_worker_docker_autoscaler_asg.on_demand_percentage_above_base_capacity | ||
| spot_allocation_strategy = var.runner_worker_docker_autoscaler_asg.spot_allocation_strategy | ||
| spot_instance_pools = var.runner_worker_docker_autoscaler_asg.spot_instance_pools | ||
| } | ||
| launch_template { | ||
| launch_template_specification { | ||
| launch_template_id = aws_launch_template.this[0].id | ||
| version = aws_launch_template.this[0].latest_version | ||
| } | ||
| dynamic "override" { | ||
| for_each = var.runner_worker_docker_autoscaler_asg.types | ||
| content { | ||
| instance_type = override.value | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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||
| dynamic "instance_refresh" { | ||
| for_each = var.runner_worker_docker_autoscaler_asg.upgrade_strategy == "rolling" ? [1] : [] | ||
| content { | ||
| strategy = "Rolling" | ||
| preferences { | ||
| min_healthy_percentage = var.runner_worker_docker_autoscaler_asg.instance_refresh_min_healthy_percentage | ||
| } | ||
| triggers = var.runner_worker_docker_autoscaler_asg.instance_refresh_triggers | ||
| } | ||
| } | ||
|
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| vpc_zone_identifier = var.runner_worker_docker_autoscaler_asg.subnet_ids | ||
| max_size = var.runner_worker.max_jobs | ||
| min_size = 0 | ||
| desired_capacity = 0 # managed by the fleeting plugin | ||
| health_check_grace_period = var.runner_worker_docker_autoscaler_asg.health_check_grace_period | ||
| health_check_type = var.runner_worker_docker_autoscaler_asg.health_check_type | ||
| force_delete = true | ||
|
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| dynamic "tag" { | ||
| for_each = local.tags | ||
| content { | ||
| key = tag.key | ||
| value = tag.value | ||
| propagate_at_launch = true | ||
| } | ||
| } | ||
|
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| lifecycle { | ||
| # do not change these values as we would immediately scale up/down, which is not wanted | ||
| ignore_changes = [ | ||
| desired_capacity, | ||
| min_size, | ||
| max_size | ||
| ] | ||
| } | ||
| } |
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