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Merge pull request #156 from dxw/bastion-host
Conditionally launch Bastion host
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| resource "aws_security_group" "infrastructure_ec2_bastion_host" { | ||
| count = local.enable_infrastructure_bastion_host ? 1 : 0 | ||
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| name = "${local.resource_prefix}-infrastructure-ec2-bastion-host" | ||
| description = "Infrastructure EC2 Bastion Host" | ||
| vpc_id = aws_vpc.infrastructure[0].id | ||
| } | ||
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| resource "aws_security_group_rule" "infrastructure_ec2_bastion_host_egress_https_tcp" { | ||
| count = local.enable_infrastructure_bastion_host ? 1 : 0 | ||
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| description = "Allow HTTPS tcp outbound" | ||
| type = "egress" | ||
| from_port = 443 | ||
| to_port = 443 | ||
| protocol = "tcp" | ||
| # tfsec:ignore:aws-ec2-no-public-egress-sgr | ||
| cidr_blocks = ["0.0.0.0/0"] | ||
| security_group_id = aws_security_group.infrastructure_ec2_bastion_host[0].id | ||
| } | ||
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| resource "aws_security_group_rule" "infrastructure_ec2_bastion_host_egress_https_udp" { | ||
| count = local.enable_infrastructure_bastion_host ? 1 : 0 | ||
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| description = "Allow HTTPS udp outbound" | ||
| type = "egress" | ||
| from_port = 443 | ||
| to_port = 443 | ||
| protocol = "udp" | ||
| # tfsec:ignore:aws-ec2-no-public-egress-sgr | ||
| cidr_blocks = ["0.0.0.0/0"] | ||
| security_group_id = aws_security_group.infrastructure_ec2_bastion_host[0].id | ||
| } | ||
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| resource "aws_security_group_rule" "infrastructure_ec2_bastion_host_egress_dns_tcp" { | ||
| count = local.enable_infrastructure_bastion_host ? 1 : 0 | ||
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| description = "Allow DNS tcp outbound to AWS" | ||
| type = "egress" | ||
| from_port = 53 | ||
| to_port = 53 | ||
| protocol = "tcp" | ||
| cidr_blocks = local.infrastructure_ecs_cluster_publicly_avaialble ? [ | ||
| for subnet in aws_subnet.infrastructure_public : subnet.cidr_block | ||
| ] : [ | ||
| for subnet in aws_subnet.infrastructure_private : subnet.cidr_block | ||
| ] | ||
| security_group_id = aws_security_group.infrastructure_ec2_bastion_host[0].id | ||
| } | ||
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| resource "aws_security_group_rule" "infrastructure_ec2_bastion_host_egress_dns_udp" { | ||
| count = local.enable_infrastructure_bastion_host ? 1 : 0 | ||
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| description = "Allow DNS udp outbound to AWS" | ||
| type = "egress" | ||
| from_port = 53 | ||
| to_port = 53 | ||
| protocol = "udp" | ||
| cidr_blocks = local.infrastructure_ecs_cluster_publicly_avaialble ? [ | ||
| for subnet in aws_subnet.infrastructure_public : subnet.cidr_block | ||
| ] : [ | ||
| for subnet in aws_subnet.infrastructure_private : subnet.cidr_block | ||
| ] | ||
| security_group_id = aws_security_group.infrastructure_ec2_bastion_host[0].id | ||
| } | ||
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| resource "aws_security_group_rule" "infrastructure_ec2_bastion_host_egress_rds" { | ||
| for_each = local.enable_infrastructure_bastion_host ? local.infrastructure_rds : {} | ||
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| description = "Allow ${each.value["engine"]} tcp outbound to RDS security group" | ||
| type = "egress" | ||
| from_port = local.rds_ports[each.value["engine"]] | ||
| to_port = local.rds_ports[each.value["engine"]] | ||
| protocol = "tcp" | ||
| source_security_group_id = aws_security_group.infrastructure_rds[each.key].id | ||
| security_group_id = aws_security_group.infrastructure_ec2_bastion_host[0].id | ||
| } | ||
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| resource "aws_security_group_rule" "infrastructure_ec2_bastion_host_custom" { | ||
| for_each = local.enable_infrastructure_bastion_host ? local.infrastructure_bastion_host_custom_security_group_rules : {} | ||
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| description = each.value["description"] | ||
| type = each.value["type"] | ||
| from_port = each.value["from_port"] | ||
| to_port = each.value["to_port"] | ||
| protocol = each.value["protocol"] | ||
| source_security_group_id = each.value["source_security_group_id"] != "" ? each.value["source_security_group_id"] : null | ||
| cidr_blocks = length(each.value["cidr_blocks"]) > 0 ? each.value["cidr_blocks"] : null | ||
| security_group_id = aws_security_group.infrastructure_ec2_bastion_host[0].id | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| resource "aws_instance" "infrastructure_bastion" { | ||
| count = local.enable_infrastructure_bastion_host ? 1 : 0 | ||
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| ami = data.aws_ami.bastion_ami[0].id | ||
| instance_type = "t3.micro" | ||
| subnet_id = local.infrastructure_vpc_network_enable_private ? [for subnet in aws_subnet.infrastructure_private : subnet.id][0] : local.infrastructure_vpc_network_enable_public ? [for subnet in aws_subnet.infrastructure_public : subnet.id][0] : null | ||
| user_data_base64 = base64encode(templatefile("${path.root}/ec2-userdata/bastion.tpl", {})) | ||
| vpc_security_group_ids = [aws_security_group.infrastructure_ec2_bastion_host[0].id] | ||
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| root_block_device { | ||
| encrypted = true | ||
| } | ||
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| metadata_options { | ||
| http_endpoint = "enabled" | ||
| http_tokens = "required" | ||
| } | ||
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| tags = { | ||
| Name = "${local.resource_prefix}-infrastructure-bastion" | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| #!/bin/bash | ||
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| # Install useful packages | ||
| sudo yum update --security -y | ||
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| if ! command -v aws &> /dev/null | ||
| then | ||
| sudo yum install -y aws-cli | ||
| fi | ||
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| sudo yum install -y \ | ||
| jq \ | ||
| rsync \ | ||
| vim |
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