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* changed "start" and "end" phases to "service start" and "service end"

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* add "pre-command start", "pre-command end", "post-command start" and "post-command end" phases
* fixed issue where the kubelet was not notifying systemd that it had started since it had been moved to a script
This commit is contained in:
staebler
2021-03-12 18:19:38 -05:00
parent a35c8dda95
commit d63debee34
3 changed files with 42 additions and 15 deletions
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9
docs/dev/bootstrap_services.md
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@@ -12,7 +12,10 @@ the line number of the error and the last three lines from the service's journal
* A service adds an entry when a stage of the service starts. An example of a service stage
is the cvo-bootstrap stage of the bootkube service. During that stage, the
cluster-version-operator renders its manifests.
* A service adds an entry when a stage of the service ends. This is similar to the entry
* A service adds an entry when a stage of the service ends. This is similar to the entry
added when a service ends, including having a result and error information if applicable.
* A service adds an entry when a pre- or post-command starts.
* A service adds en entry when a pre- or post-command ends. This is similar to the entry
added when a service ends, including having a result and error information if applicable.
##### Managing Service Records in a Service #####
@@ -41,8 +44,8 @@ source the same /usr/local/bin/bootstrap-service-record.sh script. It should als
`PRE_COMMAND` or `POST_COMMAND` environment variable with a value that identifies the command.
For example, kubelet.service has a pre-command of /usr/local/bin/kubelet-pause-image.sh. The
kubelet-pause-image.sh script sets the `PRE_COMMAND` environment variable to "kubelet-pause-image"
before sourcing the bootstrap-service-record.sh script. All of the entries for the pre-command
will contain a `preCommand` field with the "kubelet-pause-image" value.
before sourcing the bootstrap-service-record.sh script. The entries for the pre-command will
contain a `preCommand` field with the "kubelet-pause-image" value.
###### Sample Script #######