open-consul/website/content/docs/connect/config-entries/mesh.mdx
Freddy f399fd2add
Rename CatalogDestinationsOnly (#10397)
CatalogDestinationsOnly is a passthrough that would enable dialing
addresses outside of Consul's catalog. However, when this flag is set to
true only _connect_ endpoints for services can be dialed.

This flag is being renamed to signal that non-Connect endpoints can't be
dialed by transparent proxies when the value is set to true.
2021-06-14 14:15:09 -06:00

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---
layout: docs
page_title: 'Configuration Entry Kind: Mesh'
description: >-
The mesh config entry kind allows for globally defining default
configuration across all services mesh proxies.
Settings in this config entry apply across all namespaces and federated datacenters.
Currently, only one mesh entry is supported.
---
# Mesh <sup>Beta</sup>
-> **v1.10.0+:** This config entry is supported in Consul versions 1.10.0+.
The `mesh` config entry kind allows for globally defining
default configuration that applies to all service mesh proxies.
Settings in this config entry apply across all namespaces and federated datacenters.
## Sample Config Entries
### Only allow transparent proxies to dial addresses in the mesh.
<Tabs>
<Tab heading="HCL">
```hcl
Kind = "mesh"
TransparentProxy {
MeshDestinationsOnly = true
}
```
</Tab>
<Tab heading="HCL (Consul Enterprise)">
**NOTE:** The `mesh` config entry can only be created in the `default`
namespace and it will apply to proxies across **all** namespaces.
```hcl
Kind = "mesh"
Namespace = "default" # Can only be set to "default".
TransparentProxy {
MeshDestinationsOnly = true
}
```
</Tab>
</Tabs>
## Available Fields
- `Kind` - Must be set to `mesh`
- `Namespace` `(string: "default")` <EnterpriseAlert inline /> - Specifies the namespace the config entry will apply to.
Must be set to `default`
- `Meta` `(map<string|string>: nil)` - Specifies arbitrary KV metadata pairs.
- `TransparentProxy` `(TransparentProxyConfig: <optional>)` - Controls configuration specific to proxies in
`transparent` [mode](/docs/connect/config-entries/service-defaults#mode). Added in v1.10.0.
- `MeshDestinationsOnly` `(bool: false)` - Determines whether sidecar proxies operating in transparent mode can
proxy traffic to IP addresses not registered in Consul's mesh. If enabled, traffic will only be proxied
to upstream proxies or Connect-native services. If disabled, requests will be proxied as-is to the
original destination IP address. Consul will not encrypt the connection.
## ACLs
Configuration entries may be protected by [ACLs](/docs/security/acl).
Reading a `mesh` config entry requires no specific privileges.
Creating, updating, or deleting a `mesh` config entry requires
`operator:write`.