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Synchronize CNI secure bridge documentation

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with production use.
This commit is contained in:
Maximilian Paß
2024-04-25 14:38:50 +02:00
parent ec3b2a93db
commit b9e978c180
2 changed files with 77 additions and 117 deletions
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11
docs/configuration.md
View File

@ -87,6 +87,17 @@ Additionally, we provide a [secure-bridge](./resources/secure-bridge.conflist) c
If the path is not set up correctly or with a different name, the placement of allocations will fail in Nomad: `Constraint missing network filtered [all] nodes`. Be sure to set the "dns" and "dns-search" options in `/etc/docker/daemon.json` with reasonable defaults, for example with those shown in our [example configuration for Docker](./resources/docker.daemon.json).
### Network range
The default subnet range for Docker containers can be adjusted.
This can be done both in the Docker daemon configuration and the CNI secure-bridge configuration.
Accordingly, every container using the secure-bridge will receive an IP of the CNI configuration.
Both subnet range configurations should not be overlapping.
An example configuration could use `10.151.0.0/20` for all containers without the CNI secure-bridge and `10.151.16.0/20`
for all containers using the CNI secure bridge.
This would grant 4096 IPs to both subnets and keep 14 network range blocks of the `10.151.0.0/16` network free for future use (e.g., in other CNI configs).
### Use gVisor as a sandbox
We recommend using gVisor as a sandbox for the execution environments. First, [install gVisor following the official documentation](https://gvisor.dev/docs/user_guide/install/) and second, adapt the `/etc/docker/daemon.json` with reasonable defaults as shown in our [example configuration for Docker](./resources/docker.daemon.json).

183
docs/resources/secure-bridge.conflist
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@ -11,132 +11,81 @@
"ipMasq": true,
"isGateway": true,
"forceAddress": true,
"dns":{
"nameservers":[
"8.8.8.8",
"8.8.4.4",
"2001:4860:4860::8888",
"2001:4860:4860::8844"
],
"domain": "poseidon.internal",
"search": [
"poseidon.internal"
]
},
"ipam": {
"type": "host-local",
"ranges": [
[
{
"subnet": "172.26.80.0/20"
"subnet": "10.151.16.0/20"
}
],
[
{
"subnet": "fd00:2::/64"
}
]
],
"routes": [
{ "dst": "1.0.0.0/8" },
{ "dst": "2.0.0.0/7" },
{ "dst": "4.0.0.0/6" },
{ "dst": "8.0.0.0/7" },
{ "dst": "11.0.0.0/8" },
{ "dst": "12.0.0.0/6" },
{ "dst": "16.0.0.0/4" },
{ "dst": "32.0.0.0/3" },
{ "dst": "64.0.0.0/3" },
{ "dst": "96.0.0.0/6" },
{ "dst": "100.0.0.0/10" },
{ "dst": "100.128.0.0/9" },
{ "dst": "101.0.0.0/8" },
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{ "dst": "120.0.0.0/6" },
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{ "dst": "128.0.0.0/3" },
{ "dst": "160.0.0.0/5" },
{ "dst": "168.0.0.0/8" },
{ "dst": "169.0.0.0/9" },
{ "dst": "169.128.0.0/10" },
{ "dst": "169.192.0.0/11" },
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]
}
},