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Add wildcard mirror support.

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Signed-off-by: Lantao Liu <lantaol@google.com>
This commit is contained in:
Lantao Liu
2019-08-13 01:17:48 -07:00
parent 8021850e91
commit 81ca274c6f
3 changed files with 114 additions and 28 deletions
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13
docs/registry.md
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@@ -13,12 +13,23 @@ To configure image registries create/modify the `/etc/containerd/config.toml` as
endpoint = ["https://HostIP1:Port1"]
[plugins.cri.registry.mirrors."test.insecure-registry.io"]
endpoint = ["http://HostIP2:Port2"]
# wildcard matching is supported but not required.
[plugins.cri.registry.mirrors."*"]
endpoint = ["http://HostIP3:Port3"]
```
The default configuration can be generated by `containerd config default > /etc/containerd/config.toml`.
The endpoint is a list that can contain multiple image registry URLs split by commas. When pulling an image
from a registry, containerd will try these endpoint URLs one by one, and use the first working one.
from a registry, containerd will try these endpoint URLs one by one, and use the first working one. Please note
that if the default registry endpoint is not already specified in the endpoint list, it will be automatically
tried at the end with scheme `https` and path `v2`, e.g. `https://gcr.io/v2` for `gcr.io`.
As an example, for the image `gcr.io/library/busybox:latest`, the endpoints are:
* `gcr.io` is configured: endpoints for `gcr.io` + default endpoint `https://gcr.io/v2`.
* `*` is configured, and `gcr.io` is not: endpoints for `*` + default
endpoint `https://gcr.io/v2`.
* None of above is configured: default endpoint `https:/gcr.io/v2`.
After modify this config, you need restart the `containerd` service.