Update Pre/Post hooks example. #795
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Signed-off-by: Wayne Witzel III <[email protected]>
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carlisia
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docs/hooks.md
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| The Ark [example/nginx-app/with-pv.yaml][2] serves as an example of adding the pre and post hook annotations directly | ||
| to your declarative deployment. Below is an example of what updating an object in place might look like. | ||
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| Place Ark in to restore only mode. By placing Ark in restore only mode you prevent Ark backups from running |
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The to here is extraneous.
docs/hooks.md
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| Place Ark in to restore only mode. By placing Ark in restore only mode you prevent Ark backups from running | ||
| while you are adding the annotations and avoid the condition where the pre hook freezes the file system, but | ||
| there is no post hook setup to unfreeze the file system. |
docs/hooks.md
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| The Ark [example/nginx-app/with-pv.yaml][2] serves as an example of adding the pre and post hook annotations directly | ||
| to your declarative deployment. Below is an example of what updating an object in place might look like. | ||
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| Place Ark in to restore only mode. By placing Ark in restore only mode you prevent Ark backups from running |
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s/By placing Ark in restore only mode you prevent/This will prevent
docs/hooks.md
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| kubectl annotate pod -n nginx-example -l app=nginx post.hook.backup.ark.heptio.com/command='["/sbin/fsfreeze", "--unfreeze", "/var/log/nginx"]' | ||
| kubectl annotate pod -n nginx-example -l app=nginx post.hook.backup.ark.heptio.com/containr=fsfreeze | ||
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| Finally remove Ark from restore only mode and test the pre and post hooks by creating a backup. You can use the Ark logs to verify that the pre and post |
nrb
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Aug 27, 2018
docs/hooks.md
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| Now you patch your deployment with the required annotations. | ||
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| kubectl annotate pod -n nginx-example -l app=nginx pre.hook.backup.ark.heptio.com/command='["/sbin/fsfreeze", "--freeze", "/var/log/nginx"]' |
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I think these commands should be wrapper in triple backticks, to make them code snippets.
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Signed-off-by: Wayne Witzel III <[email protected]>
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skriss
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| Now you patch your pod with the required annotations. | ||
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| ```shell | ||
| kubectl annotate pod -n nginx-example -l app=nginx pre.hook.backup.ark.heptio.com/command='["/sbin/fsfreeze", "--freeze", "/var/log/nginx"]' |
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You could apply all of these annotations in a single kubectl call, e.g. kubectl annotate pod a=b c=d ... -- which I think would remove the need to flip ark into restore-only mode and back. I think that'd be preferable since although I get the restore-only mode thing, it distracts a little from the main point
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This probably addresses #245 as well. |
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| kubectl annotate pod -n nginx-example -l app=nginx post.hook.backup.ark.heptio.com/containr=fsfreeze | ||
| kubectl annotate pod -n nginx-example -l app=nginx \ | ||
| pre.hook.backup.ark.heptio.com/command='["/sbin/fsfreeze", "--freeze", "/var/log/nginx"]' \ | ||
| pre.hook.backup.ark.heptio.com/containr=fsfreeze \ |
skriss
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docs/hooks.md
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| pre.hook.backup.ark.heptio.com/command='["/sbin/fsfreeze", "--freeze", "/var/log/nginx"]' \ | ||
| pre.hook.backup.ark.heptio.com/containr=fsfreeze \ | ||
| post.hook.backup.ark.heptio.com/command='["/sbin/fsfreeze", "--unfreeze", "/var/log/nginx"]' \ | ||
| post.hook.backup.ark.heptio.com/containr=fsfreeze |
Signed-off-by: Wayne Witzel III <[email protected]>
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skriss
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| [1]: api-types/backup.md | ||
| [2]: https://github.com/heptio/ark/blob/master/examples/nginx-app/with-pv.yaml |
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just use examples/nginx-app/with-pv.yaml -- makes things work properly with GH pages/multiple versions of the docs
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otherwise I think LGTM |
Signed-off-by: Wayne Witzel III <[email protected]>
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Merging since there's an LGTM and the other comments appear to have been addressed. |
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Rolls up changes from vmware-tanzu#795 and vmware-tanzu#823 Signed-off-by: Nolan Brubaker <[email protected]>
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This change puts docs from vmware-tanzu#795 and vmware-tanzu#823 on the live docs site. Signed-off-by: Nolan Brubaker <[email protected]>
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Updates our pre/post hook docs and extends it with an fsfreeze example.