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docs: minor polish for rolling deployments doc

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Pasha Sviderski
2026-03-03 16:39:43 +10:00
parent 7b9bed0780
commit 3f1a772288
1 changed files with 6 additions and 6 deletions
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website/docs/4-guides/1-deployments/4-rolling-deployments.md
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@@ -76,9 +76,6 @@ is typically enough for a process in a container to initialise all its dependenc
You can change the monitoring period for a service with `deploy.update_config.monitor`. For example, increase it if your
app takes longer to start or if you want to give it more time to recover from transient errors on startup.
Set it to `0s` to skip monitoring entirely if you are confident the new containers will start correctly and want to
speed up the deployment.
```yaml title="compose.yaml"
services:
app:
@@ -89,6 +86,9 @@ services:
monitor: 10s
```
Set it to `0s` to skip monitoring entirely if you are confident the new containers will start correctly and want to
speed up the deployment. A safer alternative is to configure a [health check](#health-checks) instead.
You can also change the default monitoring period (`5s`) for all services globally with an environment variable
`UNCLOUD_HEALTH_MONITOR_PERIOD`:
@@ -99,14 +99,14 @@ export UNCLOUD_HEALTH_MONITOR_PERIOD=10s
export UNCLOUD_HEALTH_MONITOR_PERIOD=0s
```
`deploy.update_config.monitor` overrides the global default for each service.
`deploy.update_config.monitor` overrides the global default for that service.
### Health checks
If your container has a [`healthcheck`](https://github.com/compose-spec/compose-spec/blob/main/spec.md#healthcheck)
If your service has a [`healthcheck`](https://github.com/compose-spec/compose-spec/blob/main/spec.md#healthcheck)
configured, Uncloud also checks its health status during and after the monitoring period.
If the container becomes `healthy` before the monitoring period ends, the deployment succeeds early and moves on to the
If a container becomes `healthy` before the monitoring period ends, the deployment succeeds early and moves on to the
next container. If the container is `unhealthy` after the monitoring period, Uncloud
[rolls it back](#rollback-on-failure) and fails the deployment. Transient `unhealthy` states during the monitoring
period are tolerated to give the container time to recover from startup issues.