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Update ReadMe with additional env vars #3244

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Jun 14, 2022
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Update ReadMe with additional env vars #3244

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6 changes: 6 additions & 0 deletions README.md
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Expand Up @@ -196,6 +196,12 @@ additional details on each available environment variable.
| `ECS_ENABLE_RUNTIME_STATS` | `true` | Determines if [pprof](https://pkg.go.dev/net/http/pprof) is enabled for the agent. If enabled, the different profiles can be accessed through the agent's introspection port (e.g. `curl http://localhost:51678/debug/pprof/heap > heap.pprof`). In addition, agent's [runtime stats](https://pkg.go.dev/runtime#ReadMemStats) are logged to `/var/log/ecs/runtime-stats.log` file. | `false` | `false` |
| `ECS_EXCLUDE_IPV6_PORTBINDING` | `true` | Determines if agent should exclude IPv6 port binding using default network mode. If enabled, IPv6 port binding will be filtered out, and the response of DescribeTasks API call will not show tasks' IPv6 port bindings, but it is still included in Task metadata endpoint. | `true` | `true` |
| `ECS_WARM_POOLS_CHECK` | `true` | Whether to ensure instances going into an [EC2 Auto Scaling group warm pool](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-warm-pools.html) are prevented from being registered with the cluster. Set to true only if using EC2 Autoscaling | `false` | `false` |
| `ECS_SKIP_LOCALHOST_TRAFFIC_FILTER` | `false` | By default, the ecs-init service adds an iptable rule to drop non-local packets to localhost if they're not part of an existing forwarded connection or DNAT, and removes the rule upon stop. If this is set to true, the rule will not be added or removed. | `false` | `false` |
| `ECS_ALLOW_OFFHOST_INTROSPECTION_ACCESS` | `true` | By default, the ecs-init service adds an iptable rule to block access to the agent introspection port from off-host (or containers in awsvpc network mode), and removes the rule upon stop. If this is set to true, the rule will not be added or removed | `false` | `false` |
| `ECS_OFFHOST_INTROSPECTION_INTERFACE_NAME` | `eth0` | The primary network interface name to be used for blocking offhost agent introspection port access | `eth0` | `eth0` |
| `ECS_ENABLE_GPU_SUPPORT` | `true` | Whether you use container instances with GPU support. This parameter is specified for the agent. You must also configure your task definitions for GPU. For more information | `false` | `Not applicable` |
| `HTTP_PROXY` | `10.0.0.131:3128` | The hostname (or IP address) and port number of an HTTP proxy to use for the Amazon ECS agent to connect to the internet. For example, this proxy will be used if your container instances do not have external network access through an Amazon VPC internet gateway or NAT gateway or instance. If this variable is set, you must also set the NO_PROXY variable to filter Amazon EC2 instance metadata and Docker daemon traffic from the proxy. | `null` | `null` |
| `NO_PROXY` | <For Linux: 169.254.169.254,169.254.170.2,/var/run/docker.sock &#124; For Windows: 169.254.169.254,169.254.170.2,\\.\pipe\docker_engine> | The HTTP traffic that should not be forwarded to the specified HTTP_PROXY. You must specify 169.254.169.254,/var/run/docker.sock to filter Amazon EC2 instance metadata and Docker daemon traffic from the proxy. | `null` | `null` |

### Persistence

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