unkin-agent
9da206dc7c
PVCs and CloudNativePG Clusters need S3 buckets and backup schedules
provisioned consistently. This operator watches the
backups.unkin.net/{schedule,destination} annotations on those objects and
provisions everything needed to back them up, with no new CRDs.
- Add a PVC controller that provisions cephrgw ObjectStoreUser/Bucket/BucketAccess,
auto-generates a restic repo-password Secret and creates a k8up Schedule scoped
to the PVC via spec.backup.volumes[].persistentVolumeClaim.claimName.
- Add a CNPG Cluster controller that provisions the same bucket stack, idempotently
patches spec.backup.barmanObjectStore (leaving a user-set destinationPath alone
with a Warning event) and creates a ScheduledBackup.
- Resolve destinations through a ConfigMap lookup table; requeue until the
BucketAccess is Ready before creating schedule resources; own-reference created
resources and retain bucket data by default.
- Add schedule-mapping helpers (k8up 5-field/shortcut pass-through, CNPG 6-field
seconds-first) and deterministic, length-bounded name derivation.
- Add unit tests (schedule mapping, name derivation, destination resolution) and
envtest controller tests for both paths, wiring the external CRDs into envtest.
- Add kubebuilder-generated RBAC, a Dockerfile (distroless/nonroot), Woodpecker
lint/test/build pipelines and a tag-triggered image push to the artifactapi
docker-internal registry, plus a version-bump Makefile and deploy manifests.
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
// Copyright The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package procfs
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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"strconv"
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"strings"
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)
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// A BuddyInfo is the details parsed from /proc/buddyinfo.
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// The data is comprised of an array of free fragments of each size.
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// The sizes are 2^n*PAGE_SIZE, where n is the array index.
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type BuddyInfo struct {
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Node string
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Zone string
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Sizes []float64
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}
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// BuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
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func (fs FS) BuddyInfo() ([]BuddyInfo, error) {
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file, err := os.Open(fs.proc.Path("buddyinfo"))
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if err != nil {
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return nil, err
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}
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defer file.Close()
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return parseBuddyInfo(file)
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}
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func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) {
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var (
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buddyInfo = []BuddyInfo{}
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scanner = bufio.NewScanner(r)
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bucketCount = -1
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)
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for scanner.Scan() {
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var err error
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line := scanner.Text()
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parts := strings.Fields(line)
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if len(parts) < 4 {
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return nil, fmt.Errorf("%w: Invalid number of fields, found: %v", ErrFileParse, parts)
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}
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node := strings.TrimSuffix(parts[1], ",")
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zone := strings.TrimSuffix(parts[3], ",")
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arraySize := len(parts[4:])
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if bucketCount == -1 {
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bucketCount = arraySize
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} else if bucketCount != arraySize {
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return nil, fmt.Errorf("%w: mismatch in number of buddyinfo buckets, previous count %d, new count %d", ErrFileParse, bucketCount, arraySize)
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}
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sizes := make([]float64, arraySize)
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for i := range arraySize {
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sizes[i], err = strconv.ParseFloat(parts[i+4], 64)
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if err != nil {
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return nil, fmt.Errorf("%w: Invalid valid in buddyinfo: %f: %w", ErrFileParse, sizes[i], err)
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}
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}
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buddyInfo = append(buddyInfo, BuddyInfo{node, zone, sizes})
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}
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return buddyInfo, scanner.Err()
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}
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