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Enable agent restart without impacting running services #63
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…eviction on shutdown.
…ods when shutting down. Draining all pods on agent shudown would mean stopping all services that are managed by the agent, which is not feasible for our scenario. Also added check during startup whether the service is already up and running, if it is already running we don't start it again.
lfrancke
previously approved these changes
Feb 18, 2021
Cargo.toml
Outdated
| @@ -8,8 +8,8 @@ edition = "2018" | |||
| # We are currently referencing the Krustlet directly from the repository, because some features that we are using have | |||
| # (exponential backoff most prominently) have not yet been included in a release | |||
| # We will look to move this to officially released versions as soon as possible | |||
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Maybe update this comment?
To say why we reference a fork.
| @@ -20,6 +20,28 @@ impl State<PodState> for Starting { | |||
| async fn next(self: Box<Self>, pod_state: &mut PodState, _: &Pod) -> Transition<PodState> { | |||
| if let Some(systemd_units) = &pod_state.service_units { | |||
| for unit in systemd_units { | |||
| match pod_state.systemd_manager.is_running(&unit.get_name()) { | |||
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I hate that this is basically a copy from below but I don't know a better way right now either...
lfrancke
approved these changes
Feb 18, 2021
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Change dependency on Krustlet to use our fork, which skips draining pods when shutting down.
Draining all pods on agent shudown would mean stopping all services that are managed by the agent, which is not feasible for our scenario.
Also added check during startup whether the service is already up and running, if it is already running we don't start it again.
fixes #24