Commit Graph

21 Commits

Author SHA1 Message Date
stevenhorsman
865fa9da15 runtime: Resolve go static-checks failure
Remove `rand.Seed` call to resolve the following failure:
```
rand.Seed is deprecated: As of Go 1.20 there is no reason to call Seed with a random value.
```

The go rand.Seed docs: https://pkg.go.dev/math/rand@go1.20#Seed
back this up and states:
> If Seed is not called, the generator is seeded randomly at program startup.
so I believe we can just delete the call.

Signed-off-by: stevenhorsman <steven@uk.ibm.com>
2024-05-21 11:08:59 +01:00
Alex Lyn
c6830ceb89 runtime: display accurate error msg to avoid misleading users.
The original handling method does not reach user expectations.
When the ClientSocketAddress method stats the corresponding
path of runtime-rs and has not found it yet, we should return
an error message here that includes the reason for the failure
(which should be an error display indicating that both runtime-go
and runtime-rs were not found). Instead of simply displaying the
corresponding path of runtime-rs as the final error message to
users.
It is also necessary to return the error promptly to the caller
for further error handling.

Fixes: #8999

Signed-off-by: Alex Lyn <alex.lyn@antgroup.com>
2024-02-04 16:45:59 +08:00
Alexandru Matei
db2cac34d8 runtime: Don't create socket file in /run/kata
The socket file for shim management is created in /run/kata
and it isn't deleted after the container is stopped. After
running and stopping thousands of containers /run folder
will run out of space.

Fixes #6622
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
Co-authored-by: Greg Kurz <groug@kaod.org>
2023-04-13 10:21:29 +03:00
Danny Canter
24b05a99b6 schedcore: Make buildable on !linux
Fixes: #5983

sched-core only makes sense on Linux hosts. Let's add stub/error for
other platforms.

Signed-off-by: Eric Ernst <eric_ernst@apple.com>
Signed-off-by: Danny Canter <danny@dcantah.dev>
2023-01-05 11:51:04 -08:00
Fabiano Fidêncio
16b8375095 golang: Stop using io/ioutils
The package has been deprecated as part of 1.16 and the same
functionality is now provided by either the io or the os package.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
2022-11-17 13:43:25 +01:00
Eric Ernst
4ebf9d38b9
Merge pull request #4310 from egernst/core-sched
shim: add support for core scheduling
2022-06-08 17:42:45 +02:00
Eric Ernst
d2df1209a5 docs: describe kata handling for core-scheduling
Add initial documentation for core-scheduling.

Signed-off-by: Eric Ernst <eric_ernst@apple.com>
2022-05-31 16:17:00 -07:00
Michael Crosby
22b6a94a84 shim: add support for core scheduling
In linux 5.14 and hopefully some backports, core scheduling allows processes to
be co scheduled within the same domain on SMT enabled systems.

Containerd impl sets the core sched domain when launching a shim. This
allows a clean way for each shim(container/pod) to be in its own domain and any
additional containers, (v2 pods) be be launched with the same domain as well as
any exec'd process added to the container.

kernel docs: https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/core-scheduling.html

For Kata specifically, we will look for SCHED_CORE environment variable
to be set to indicate we shuold create a new schedule core domain.

This is equivalent to the containerd shim's PR: e48bbe8394

Fixes: #4309

Signed-off-by: Eric Ernst <eric_ernst@apple.com>
Signed-off-by: Michael Crosby <michael@thepasture.io>
2022-05-31 10:10:40 -07:00
Eric Ernst
3201ad0830 shim-client: ensure we check resp status for Put/Post
Without this, potential errors are silently dropped. Let's ensure we
return the error code as well as potenial data from the response.

Signed-off-by: Eric Ernst <eric_ernst@apple.com>
2022-05-31 09:27:58 -07:00
Eric Ernst
0706fb28ac kata-runtime: shmgmt: make url usage consistent
Before, we had a mix of slash, etc. Unfortunately, when cleaning URL
paths, serve mux seems to mangle the request method, resulting in each
request being a GET (instead of PUT or POST).

Signed-off-by: Eric Ernst <eric_ernst@apple.com>
2022-05-31 09:27:58 -07:00
Eric Ernst
2a09378dd9 shim-client: add support for DoPut
While at it, make sure we check for nil in DoPost

Signed-off-by: Eric Ernst <eric_ernst@apple.com>
2022-05-31 09:27:58 -07:00
Eng Zer Jun
59c7165ee1
test: use T.TempDir to create temporary test directory
The directory created by `T.TempDir` is automatically removed when the
test and all its subtests complete.

This commit also updates the unit test advice to use `T.TempDir` to
create temporary directory in tests.

Fixes: #3924

Reference: https://pkg.go.dev/testing#T.TempDir
Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
2022-03-31 09:31:36 +08:00
Feng Wang
e9b5a25502 runtime: add stat and resize APIs to containerd-shim-v2
To query fs stats and resize fs, the requests need to be passed to
kata agent through containerd-shim-v2. So we're adding to rest APIs
on the shim management endpoint.
Also refactor shim management client to its own go file.

Fixes: #3454

Signed-off-by: Feng Wang <feng.wang@databricks.com>
2022-03-03 18:56:53 -08:00
bin
03546f75a6 runtime: change io/ioutil to io/os packages
Change io/ioutil to io/os packages because io/ioutil package
is deprecated from 1.16:

Discard => io.Discard
NopCloser => io.NopCloser
ReadAll => io.ReadAll
ReadDir => os.ReadDir
ReadFile => os.ReadFile
TempDir => os.MkdirTemp
TempFile => os.CreateTemp
WriteFile => os.WriteFile

Details: https://go.dev/doc/go1.16#ioutil

Fixes: #3265

Signed-off-by: bin <bin@hyper.sh>
2021-12-15 07:31:48 +08:00
Feng Wang
adc9e0baaf runtime: fix two bugs in rootless hypervisor
Update the sandbox dir clean up logic to be more appropriate
Add different seeds for randInt() method

Fixes #2770

Signed-off-by: Feng Wang <feng.wang@databricks.com>
2021-10-08 15:52:42 -07:00
bin
bf8f582c1d runtime: optimize code for managing temp users for rootless mode
This commit does two chagnes:

- move code for managing temp users to rootless.go.
- use common function in qemu.go when shutdown the VM.

Fixes: #2759

Signed-off-by: bin <bin@hyper.sh>
2021-10-08 11:04:21 +08:00
Feng Wang
1cfe59304d runtime: Run QEMU using a non-root user/group
A random generated user/group is used to start QEMU VMM process.
The /dev/kvm group owner is also added to the QEMU process to grant it access.

Fixes #2444

Signed-off-by: Feng Wang <feng.wang@databricks.com>
2021-09-17 11:28:44 -07:00
Julio Montes
31de8eb75b runtime: pkg: fix govet fieldalignment
Fix structures alignment

Signed-off-by: Julio Montes <julio.montes@intel.com>
2021-07-20 10:30:30 -05:00
bin liu
40418f6d88 runtime: add geust memory dump
When guest panic, dump guest kernel memory to host filesystem.
And also includes:
- hypervisor config
- hypervisor version
- and state of sandbox

Fixes: #1012

Signed-off-by: bin liu <bin@hyper.sh>
2020-11-05 16:04:21 +08:00
bin liu
1b75daa00f runtime: add new command to collect metrics from Kata containers
Add a new command to collect metrics and return metrics to Prometheus.

Signed-off-by: bin liu <bin@hyper.sh>
2020-07-02 17:54:54 +08:00
bin liu
186fed2a11 runtime: add implementation of GetMetrics
add implementation of `GetMetrics` for runtime.

Signed-off-by: bin liu <bin@hyper.sh>
2020-07-02 10:58:14 +08:00