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Add support to gracefully shutdown the server

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This is done by draining the connections for configured time after registry receives a SIGTERM signal.
This adds a `draintimeout` setting under `HTTP`. Registry doesn't drain
if draintimeout is not provided.

Signed-off-by: Manish Tomar <manish.tomar@docker.com>
This commit is contained in:
Manish Tomar 2018-07-30 16:15:35 -07:00
parent 9bf62ca7b3
commit 40efb602d6
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GPG key ID: 9B5659469D1399D2
5 changed files with 113 additions and 7 deletions
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docs/configuration.md
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@ -206,6 +206,7 @@ http:
host: https://myregistryaddress.org:5000
secret: asecretforlocaldevelopment
relativeurls: false
draintimeout: 60s
tls:
certificate: /path/to/x509/public
key: /path/to/x509/private
@ -738,6 +739,7 @@ http:
host: https://myregistryaddress.org:5000
secret: asecretforlocaldevelopment
relativeurls: false
draintimeout: 60s
tls:
certificate: /path/to/x509/public
key: /path/to/x509/private
@ -767,6 +769,7 @@ registry.
| `host` | no | A fully-qualified URL for an externally-reachable address for the registry. If present, it is used when creating generated URLs. Otherwise, these URLs are derived from client requests. |
| `secret` | no | A random piece of data used to sign state that may be stored with the client to protect against tampering. For production environments you should generate a random piece of data using a cryptographically secure random generator. If you omit the secret, the registry will automatically generate a secret when it starts. **If you are building a cluster of registries behind a load balancer, you MUST ensure the secret is the same for all registries.**|
| `relativeurls`| no | If `true`, the registry returns relative URLs in Location headers. The client is responsible for resolving the correct URL. **This option is not compatible with Docker 1.7 and earlier.**|
| `draintimeout`| no | Amount of time to wait for HTTP connections to drain before shutting after registry receives SIGTERM signal|
### `tls`