Automatic merge from submit-queue
Add volume reconstruct/cleanup logic in kubelet volume manager
Currently kubelet volume management works on the concept of desired
and actual world of states. The volume manager periodically compares the
two worlds and perform volume mount/unmount and/or attach/detach
operations. When kubelet restarts, the cache of those two worlds are
gone. Although desired world can be recovered through apiserver, actual
world can not be recovered which may cause some volumes cannot be cleaned
up if their information is deleted by apiserver. This change adds the
reconstruction of the actual world by reading the pod directories from
disk. The reconstructed volume information is added to both desired
world and actual world if it cannot be found in either world. The rest
logic would be as same as before, desired world populator may clean up
the volume entry if it is no longer in apiserver, and then volume
manager should invoke unmount to clean it up.
Fixes https://github.com/kubernetes/kubernetes/issues/27653
Currently kubelet volume management works on the concept of desired
and actual world of states. The volume manager periodically compares the
two worlds and perform volume mount/unmount and/or attach/detach
operations. When kubelet restarts, the cache of those two worlds are
gone. Although desired world can be recovered through apiserver, actual
world can not be recovered which may cause some volumes cannot be cleaned
up if their information is deleted by apiserver. This change adds the
reconstruction of the actual world by reading the pod directories from
disk. The reconstructed volume information is added to both desired
world and actual world if it cannot be found in either world. The rest
logic would be as same as before, desired world populator may clean up
the volume entry if it is no longer in apiserver, and then volume
manager should invoke unmount to clean it up.
Automatic merge from submit-queue
Move new etcd storage (low level storage) into cacher
In an effort for #29888, we are pushing forward this:
What?
- It changes creating etcd storage.Interface impl into creating config
- In creating cacher storage (StorageWithCacher), it passes config created above and new etcd storage inside.
Why?
- We want to expose the information of (etcd) kv client to cacher. Cacher storage uses this information to talk to remote storage.
Automatic merge from submit-queue
Adding events to federation control plane
Adding events to federation control plane.
Apart from the standard changes to add a resource to `federation/apis/core/v1`, other changes are:
* Adding a new `federationoptions.ServerRunOptions` which includes `genericoptions.ServerRunOptions` and EventsTTL.
* Added a new method in `pkg/api/mapper` to build a RestMapper based on the passed Scheme rather than using `api.Scheme`. Updated `federation/apis/core/install` to use this new method. Without this change, if `federation/apis/core/install.init()` is called before `pkg/api/install.init()` then the registered RESTMapper in `pkg/apimachinery/registered` will have no resources. This second problem will be fixed once we have instances of `pkg/apimachinery/registered` instead of a single global singleton (generated clientset which imports `pkg/api/install` will have a different instance of registered, than federation-apiserver which imports `federation/apis/core/install`).
cc @kubernetes/sig-cluster-federation @lavalamp
Automatic merge from submit-queue
[kubelet] Introduce --protect-kernel-defaults flag to make the tunable behaviour configurable
Let's make the default behaviour of kernel tuning configurable. The default behaviour is kept modify as has been so far.
Automatic merge from submit-queue
some optimization for server.go
The PR modified two places:
1) Optimise the code style according to the go style guide;
2) Optimise the log.
Automatic merge from submit-queue
Fix code generators-- make scheme building composable
I needed to make some changes to make my other refactoring possible and this got rather large.
We now provide a "SchemeBuilder" to help all of the api packages provide their scheme-building functions (addKnownTypes and friends) in a standardized way. This also allows generated deepcopies & conversions to be entirely self contained, the project will now build without them being present (as they can add themselves to the SchemeBuilder). (Although if you actually build without them, you will get reduced performance!)
Previously, there was no way to construct your own runtime.Scheme (e.g., to test), you had to use the api.Scheme object, which has all sorts of non-hermetic cruft in it. Now you can get everything from a package by calling the scheme builder's AddToScheme, including the generated functions, if they are present.
Next steps are to allow for declaring dependencies, and to standardize the registration & install code. (#25434)
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Automatic merge from submit-queue
Update github.com/spf13/pflag and github.com/spf13/cobra
Update github.com/spf13/pflag and github.com/spf13/cobra
Update:
github.com/spf13/cobra to f62e98d28ab7ad31d707ba837a966378465c7b57
github.com/spf13/cobra/doc to f62e98d28ab7ad31d707ba837a966378465c7b57
github.com/spf13/pflag to 1560c1005499d61b80f865c04d39ca7505bf7f0b
Closes issue #29852
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Automatic merge from submit-queue
Check for CAP_SYS_ADMIN in Kubelet
Comment from nsenter_mount.go header:
The Kubelet process must have CAP_SYS_ADMIN (required by nsenter); at
the present, this effectively means that the kubelet is running in a
privileged container.
Related to #26093
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<!-- Reviewable:end -->
Automatic merge from submit-queue
[Kubelet] Rename `--config` to `--pod-manifest-path`. `--config` is deprecated.
This field holds the location of a manifest file or directory of manifest
files for pods the Kubelet is supposed to run. The name of the field
should reflect that purpose. I didn't change the flag name because that
API should remain stable.
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pkg/util/logs.go got its own package in a771578a1c, but it was not
imported in the kubelet anymore such that its init() func
did not run setting logtostderr to true by default.
Automatic merge from submit-queue
Simplify canonical element term in deepcopy
Replace the old functional canonical element term in deepcopy registration with direct struct instantiation.
The old way was an artifact of non-uniform pointer/non-pointer types in the signature of deepcopy function. Since we changed that to always be a pointer, we can simplify the code.
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Also provide a new --pod-manifest-path flag and deprecate the old
--config one.
This field holds the location of a manifest file or directory of manifest
files for pods the Kubelet is supposed to run. The name of the field
should reflect that purpose.
Automatic merge from submit-queue
kube-proxy: Propagate hostname to iptables proxier
Need to propagate the hostname (i.e. Nodename) from kube-proxy to the iptables proxier to allow kube-proxy to determine local endpoints.
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Automatic merge from submit-queue
Cut the client repo, staging it in the main repo
Tracking issue: #28559
ref: https://github.com/kubernetes/kubernetes/pull/25978#issuecomment-232710174
This PR implements the plan a few of us came up with last week for cutting client into its own repo:
1. creating "_staging" (name is tentative) directory in the main repo, using a script to copy the client and its dependencies to this directory
2. periodically publishing the contents of this staging client to k8s.io/client-go repo
3. converting k8s components in the main repo to use the staged client. They should import the staged client as if the client were vendored. (i.e., the import line should be `import "k8s.io/client-go/<pacakge name>`). This requirement is to ease step 4.
4. In the future, removing the staging area, and vendoring the real client-go repo.
The advantage of having the staging area is that we can continuously run integration/e2e tests with the latest client repo and the latest main repo, without waiting for the client repo to be vendored back into the main repo. This staging area will exist until our test matrix is vendoring both the client and the server.
In the above plan, the tricky part is step 3. This PR achieves it by creating a symlink under ./vendor, pointing to the staging area, so packages in the main repo can refer to the client repo as if it's vendored. To prevent the godep tool from messing up the staging area, we export the staged client to GOPATH in hack/godep-save.sh so godep will think the client packages are local and won't attempt to manage ./vendor/k8s.io/client-go.
This is a POC. We'll rearrange the directory layout of the client before merge.
@thockin @lavalamp @bgrant0607 @kubernetes/sig-api-machinery
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The Kubelet process must have CAP_SYS_ADMIN, which implies that
the kubelet process must be either running as root or in a privileged
container. Make this check early in the startup sequence and bail out
if necessary.
Related to #26093
Update:
github.com/spf13/cobra to f62e98d28ab7ad31d707ba837a966378465c7b57
github.com/spf13/cobra/doc to f62e98d28ab7ad31d707ba837a966378465c7b57
github.com/spf13/pflag to 1560c1005499d61b80f865c04d39ca7505bf7f0b
Closes issue #29852
Automatic merge from submit-queue
Cleanup k8s script noise with a verbosity concept
Fixes https://github.com/kubernetes/kubernetes/issues/30109
The KUBE_VERBOSE environment variable sets the verbosity level to
use. Log messages can specify a verbosity by setting the V
variable. e.g.
V=2 kube::log::info foo bar
Would only print "foo bar" if $KUBE_VERBOSE >= 2.
Examples:
Default verbosity (1 for make commands):
```
$ make kubelet
+++ [0804 17:23:32] Generating bindata:
/usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/test/e2e/framework/gobindata_util.go
+++ [0804 17:23:37] Building the toolchain targets:
k8s.io/kubernetes/hack/cmd/teststale
+++ [0804 17:23:37] Building go targets for linux/amd64:
cmd/kubelet
# k8s.io/kubernetes/pkg/kubelet
pkg/kubelet/kubelet.go:247: undefined: a
make: *** [kubelet] Error 1
```
Extra verbose (5, comparable to previous levels):
<details>
```
$ make kubelet KUBE_VERBOSE=5
I0804 17:31:05.083395 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/trace.go:151:30: cannot use (traceBufHeader literal) (value of type traceBufHeader) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.083503 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/trace.go:151:7: array length 64 << 10 - unsafe.Sizeof((traceBufHeader literal)) (value of type uintptr) must be constant
I0804 17:31:05.083600 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/mgcwork.go:269:37: cannot use (workbufhdr literal) (value of type workbufhdr) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.083654 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/mgcwork.go:269:7: array length (_WorkbufSize - unsafe.Sizeof((workbufhdr literal))) / sys.PtrSize (value of type uintptr) must be constant
I0804 17:31:05.084006 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/chan.go:21:28: cannot use (hchan literal) (value of type hchan) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.084040 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/chan.go:21:66: cannot use (hchan literal) (value of type hchan) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.084076 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/chan.go:21:14: unsafe.Sizeof((hchan literal)) + uintptr(-int(unsafe.Sizeof((hchan literal))) & (maxAlign - 1)) (value of type uintptr) is not constant
I0804 17:31:05.085536 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/hashmap.go:80:31: cannot use (struct{b bmap; v int64} literal).v (value of type int64) as unsafe.ArbitraryType value in argument to unsafe.Offsetof
I0804 17:31:05.085567 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/hashmap.go:80:15: unsafe.Offsetof((struct{b bmap; v int64} literal).v) (value of type uintptr) is not constant
I0804 17:31:05.085788 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/hashmap.go:1053:45: cannot convert &zeroinitial (value of type *[1024]byte) to unsafe.Pointer
I0804 17:31:05.086995 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/mfinal.go:20:65: cannot use (finalizer literal) (value of type finalizer) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.087031 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/mfinal.go:20:11: array length (_FinBlockSize - 2 * sys.PtrSize - 2 * 4) / unsafe.Sizeof((finalizer literal)) (value of type uintptr) must be constant
I0804 17:31:05.087957 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/mstats.go:170:39: cannot use memstats.by_size (variable of type [67]struct{size uint32; nmalloc uint64; nfree uint64}) as unsafe.ArbitraryType value in argument to unsafe.Offsetof
I0804 17:31:05.087999 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/mstats.go:170:76: cannot use memstats.by_size[0] (variable of type struct{size uint32; nmalloc uint64; nfree uint64}) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.088483 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/panic.go:118:34: cannot use (_defer literal) (value of type _defer) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.088510 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/panic.go:118:20: unsafe.Sizeof((_defer literal)) (value of type uintptr) is not constant
I0804 17:31:05.089812 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/sema.go:42:42: cannot use (semaRoot literal) (value of type semaRoot) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.089845 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/runtime/sema.go:42:8: array length sys.CacheLineSize - unsafe.Sizeof((semaRoot literal)) (value of type uintptr) must be constant
I0804 17:31:05.094634 2601 parse.go:307] type checking encountered some errors in "runtime", but ignoring.
I0804 17:31:05.875185 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/davecgh/go-spew/spew/bypass.go:33:26: cannot use (*byte)(nil) (value of type *byte) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.875234 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/_output/local/go/src/k8s.io/kubernetes/vendor/github.com/davecgh/go-spew/spew/bypass.go:33:12: unsafe.Sizeof((*byte)(nil)) (value of type uintptr) is not constant
I0804 17:31:05.875838 2601 parse.go:307] type checking encountered some errors in "github.com/davecgh/go-spew/spew", but ignoring.
I0804 17:31:05.897216 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/crypto/cipher/xor.go:12:36: cannot use uintptr(0) (constant 0 of type uintptr) as unsafe.ArbitraryType value in argument to unsafe.Sizeof
I0804 17:31:05.897261 2601 parse.go:353] type checker error: /usr/local/google/home/stclair/.gvm/gos/go1.6.2/src/crypto/cipher/xor.go:12:18: int(unsafe.Sizeof(uintptr(0))) (value of type int) is not constant
I0804 17:31:05.897360 2601 parse.go:307] type checking encountered some errors in "crypto/cipher", but ignoring.
I0804 17:31:06.400904 2601 conversion.go:227] considering pkg "k8s.io/kubernetes/federation/apis/core/v1"
I0804 17:31:06.401138 2601 conversion.go:243] tags: ["k8s.io/kubernetes/federation/apis/core"]
I0804 17:31:06.427408 2601 conversion.go:283] no viable conversions, not generating for this package
I0804 17:31:06.427508 2601 main.go:73] Completed successfully.
Go version: go version go1.6.2 linux/amd64
+++ [0804 17:31:06] Generating bindata:
/usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/test/e2e/framework/gobindata_util.go
Generated bindata file : 11536 ../../..//test/e2e/generated/bindata.go lines of lovely automated artifacts
+++ [0804 17:31:12] Building the toolchain targets:
k8s.io/kubernetes/hack/cmd/teststale
+++ [0804 17:31:12] Building go targets for linux/amd64:
cmd/kubelet
# k8s.io/kubernetes/pkg/kubelet
pkg/kubelet/kubelet.go:247: undefined: a
!!! Error in /usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/hack/lib/golang.sh:506
'go install "${goflags[@]:+${goflags[@]}}" -gcflags "${gogcflags}" -ldflags "${goldflags}" "${nonstatics[@]:+${nonstatics[@]}}"' exited with status 2
Call stack:
1: /usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/hack/lib/golang.sh:506 kube::golang::build_binaries_for_platform(...)
2: /usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/hack/lib/golang.sh:692 kube::golang::build_binaries(...)
3: hack/make-rules/build.sh:27 main(...)
Exiting with status 1
!!! Error in /usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/hack/lib/golang.sh:596
'( kube::golang::setup_env; echo "Go version: $(go version)"; local host_platform; host_platform=$(kube::golang::host_platform); local goflags goldflags gogcflags; eval "goflags=(${KUBE_GOFLAGS:-})"; goldflags="${KUBE_GOLDFLAGS:-} $(kube::version::ldflags)"; gogcflags="${KUBE_GOGCFLAGS:-}"; local use_go_build; local -a targets=(); local arg; readonly BINDATAS=("${KUBE_ROOT}/test/e2e/framework/gobindata_util.go"); kube::log::status "Generating bindata:" "${BINDATAS[@]}"; for bindata in ${BINDATAS[@]};
do
if [[ -f $bindata ]]; then
go generate "${bindata}";
fi;
done; for arg in "$@";
do
if [[ "${arg}" == "--use_go_build" ]]; then
use_go_build=true;
else
if [[ "${arg}" == -* ]]; then
goflags+=("${arg}");
else
targets+=("${arg}");
fi;
fi;
done; if [[ ${#targets[@]} -eq 0 ]]; then
targets=("${KUBE_ALL_TARGETS[@]}");
fi; local -a platforms=(${KUBE_BUILD_PLATFORMS:-}); if [[ ${#platforms[@]} -eq 0 ]]; then
platforms=("${host_platform}");
fi; local binaries; binaries=($(kube::golang::binaries_from_targets "${targets[@]}")); local parallel=false; if [[ ${#platforms[@]} -gt 1 ]]; then
local gigs; gigs=$(kube::golang::get_physmem); if [[ ${gigs} -ge ${KUBE_PARALLEL_BUILD_MEMORY} ]]; then
kube::log::status "Multiple platforms requested and available ${gigs}G >= threshold ${KUBE_PARALLEL_BUILD_MEMORY}G, building platforms in parallel"; parallel=true;
else
kube::log::status "Multiple platforms requested, but available ${gigs}G < threshold ${KUBE_PARALLEL_BUILD_MEMORY}G, building platforms in serial"; parallel=false;
fi;
fi; kube::golang::build_kube_toolchain; if [[ "${parallel}" == "true" ]]; then
kube::log::status "Building go targets for ${platforms[@]} in parallel (output will appear in a burst when complete):" "${targets[@]}"; local platform; for platform in "${platforms[@]}";
do
( kube::golang::set_platform_envs "${platform}"; kube::log::status "${platform}: go build started"; kube::golang::build_binaries_for_platform ${platform} ${use_go_build:-}; kube::log::status "${platform}: go build finished" ) &> "/tmp//${platform//\//_}.build" &
done; local fails=0; for job in $(jobs -p);
do
wait ${job} || let "fails+=1";
done; for platform in "${platforms[@]}";
do
cat "/tmp//${platform//\//_}.build";
done; exit ${fails};
else
for platform in "${platforms[@]}";
do
kube::log::status "Building go targets for ${platform}:" "${targets[@]}"; kube::golang::set_platform_envs "${platform}"; kube::golang::build_binaries_for_platform ${platform} ${use_go_build:-};
done;
fi )' exited with status 1
Call stack:
1: /usr/local/google/home/stclair/go/k8s3/src/k8s.io/kubernetes/hack/lib/golang.sh:596 kube::golang::build_binaries(...)
2: hack/make-rules/build.sh:27 main(...)
Exiting with status 1
make: *** [kubelet] Error 1
```
</details>
Remaining work: Add a verbosity label to more log messages.
/cc @kubernetes/sig-api-machinery @kubernetes/contributor-experience
Automatic merge from submit-queue
Rewrite service controller to apply best controller pattern
This PR is a long term solution for #21625:
We apply the same pattern like replication controller to service controller to avoid the potential process order messes in service controller, the change includes:
1. introduce informer controller to watch service changes from kube-apiserver, so that every changes on same service will be kept in serviceStore as the only element.
2. put the service name to be processed to working queue
3. when process service, always get info from serviceStore to ensure the info is up-to-date
4. keep the retry mechanism, sleep for certain interval and add it back to queue.
5. remote the logic of reading last service info from kube-apiserver before processing the LB info as we trust the info from serviceStore.
The UT has been passed, manual test passed after I hardcode the cloud provider as FakeCloud, however I am not able to boot a k8s cluster with any available cloudprovider, so e2e test is not done.
Submit this PR first for review and for triggering a e2e test.
