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Make etcd cache size configurable
Instead of the prior 50K limit, allow users to specify a more sensible size for their cluster.
I'm not sure what a sensible default is here. I'm still experimenting on my own clusters. 50 gives me a 270MB max footprint. 50K caused my apiserver to run out of memory as it exceeded >2GB. I believe that number is far too large for most people's use cases.
There are some other fundamental issues that I'm not addressing here:
- Old etcd items are cached and potentially never removed (it stores using modifiedIndex, and doesn't remove the old object when it gets updated)
- Cache isn't LRU, so there's no guarantee the cache remains hot. This makes its performance difficult to predict. More of an issue with a smaller cache size.
- 1.2 etcd entries seem to have a larger memory footprint (I never had an issue in 1.1, even though this cache existed there). I suspect that's due to image lists on the node status.
This is provided as a fix for #23323
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Flexvolume: Add support for multiple secrets
This PR adds support to pass multiple secrets for flexvolume plugins.
To allow multiple secrets, secrets are now passed as:
"kubernetes.io/secret/id-rsa":"value-2\r\n\r\n","kubernetes.io/secret/id-rsa.pub":"value-1\r\n"
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Additional go vet fixes
Mostly:
- pass lock by value
- bad syntax for struct tag value
- example functions not formatted properly
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Minor doc edits to development.md
Noted a few small clarity issues going through the development guide and while it mentioned local builds, it was missing instructions for building on a local go developer environment.
Signed-off-by: mikebrow <brownwm@us.ibm.com>
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Sync up all release note related docs with the latest process/procedures
@eparis we also need to get the munger in line with the latest. I think we've stopped making changes at this point. #23743 is coming up but is an enhancement to the base procedures here.
cc @bgrant0607
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Add some info about binary downloads
This should be merged before `v1.2`. Useful information.
WDYT?
@wojtek-t @fgrzadkowski @zmerlynn @mikedanese @brendandburns @thockin
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Up to golang 1.6
A second attempt to upgrade go version above `go1.4`
Merge ASAP after you've cut the `release-1.2` branch and feel ready.
`go1.6` should perform slightly better than `go1.5`, so this time it might work
@gmarek @wojtek-t @zmerlynn @mikedanese @brendandburns @ixdy @thockin
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Move typed clients into clientset folder
Move typed clients from `pkg/client/typed/` to `pkg/client/clientset_generated/${clientset_name}/typed`.
The first commit changes the client-gen, the last commit updates the doc, other commits are just moving things around.
@lavalamp @krousey
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minor edits to testing guide
Noted a few small issues going through the getting started testing guide.
Cheers, Mike
Signed-off-by: mikebrow <brownwm@us.ibm.com>
