init
This commit is contained in:
Murat Kabilov
parent
67cc9b426f
commit
01399b34bb
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@ -0,0 +1,25 @@
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
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*.o
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*.a
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*.so
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||||
|
||||
# Folders
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_obj
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||||
_test
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|
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# Architecture specific extensions/prefixes
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*.[568vq]
|
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[568vq].out
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||||
|
||||
*.cgo1.go
|
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*.cgo2.c
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_cgo_defun.c
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_cgo_gotypes.go
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_cgo_export.*
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|
||||
_testmain.go
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||||
|
||||
*.exe
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*.test
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||||
*.prof
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/vendor/
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31
README.md
31
README.md
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@ -1,2 +1,29 @@
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# postgres-operator
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PostgreSQL operator in Kubernetes: concepts and code.
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# postgres operator prototype (WIP)
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### Create minikube
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$ minikube start
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### Deploy etcd
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$ kubectl create -f github.com/coreos/etcd/hack/kubernetes-deploy/etcd.yaml
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### Run operator
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$ go run main.go
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### Check if ThirdPartyResource has been registered
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$ kubectl get thirdpartyresources
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NAME DESCRIPTION VERSION(S)
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spilo.acid.zalan.do A specification of Spilo StatefulSets v1
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### Create a new spilo cluster
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$ kubectl create -f testcluster.yaml
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### Watch Pods being created
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$ kubectl get pods -w
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@ -0,0 +1,264 @@
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hash: c45b505f8cf3c9b967a7244e0a675ae11c158d0168496bed18a43270e2cebfe9
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updated: 2017-01-09T11:28:31.075588565+01:00
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imports:
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- name: cloud.google.com/go
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version: 3b1ae45394a234c385be014e9a488f2bb6eef821
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subpackages:
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- compute/metadata
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||||
- internal
|
||||
- name: github.com/blang/semver
|
||||
version: 31b736133b98f26d5e078ec9eb591666edfd091f
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- name: github.com/coreos/etcd
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version: 3d5ba43211beec7fbb1472634a9c3b464581658a
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subpackages:
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- client
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- pkg/pathutil
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- pkg/types
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- name: github.com/coreos/go-oidc
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version: 5644a2f50e2d2d5ba0b474bc5bc55fea1925936d
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subpackages:
|
||||
- http
|
||||
- jose
|
||||
- key
|
||||
- oauth2
|
||||
- oidc
|
||||
- name: github.com/coreos/pkg
|
||||
version: fa29b1d70f0beaddd4c7021607cc3c3be8ce94b8
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subpackages:
|
||||
- capnslog
|
||||
- health
|
||||
- httputil
|
||||
- timeutil
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- name: github.com/davecgh/go-spew
|
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version: 5215b55f46b2b919f50a1df0eaa5886afe4e3b3d
|
||||
subpackages:
|
||||
- spew
|
||||
- name: github.com/docker/distribution
|
||||
version: cd27f179f2c10c5d300e6d09025b538c475b0d51
|
||||
subpackages:
|
||||
- digest
|
||||
- reference
|
||||
- name: github.com/emicklei/go-restful
|
||||
version: 89ef8af493ab468a45a42bb0d89a06fccdd2fb22
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||||
subpackages:
|
||||
- log
|
||||
- swagger
|
||||
- name: github.com/ghodss/yaml
|
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version: 73d445a93680fa1a78ae23a5839bad48f32ba1ee
|
||||
- name: github.com/go-openapi/jsonpointer
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version: 46af16f9f7b149af66e5d1bd010e3574dc06de98
|
||||
- name: github.com/go-openapi/jsonreference
|
||||
version: 13c6e3589ad90f49bd3e3bbe2c2cb3d7a4142272
|
||||
- name: github.com/go-openapi/spec
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version: 6aced65f8501fe1217321abf0749d354824ba2ff
|
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- name: github.com/go-openapi/swag
|
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version: 1d0bd113de87027671077d3c71eb3ac5d7dbba72
|
||||
- name: github.com/gogo/protobuf
|
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version: 8d70fb3182befc465c4a1eac8ad4d38ff49778e2
|
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subpackages:
|
||||
- proto
|
||||
- sortkeys
|
||||
- name: github.com/golang/glog
|
||||
version: 44145f04b68cf362d9c4df2182967c2275eaefed
|
||||
- name: github.com/golang/protobuf
|
||||
version: 4bd1920723d7b7c925de087aa32e2187708897f7
|
||||
subpackages:
|
||||
- jsonpb
|
||||
- proto
|
||||
- name: github.com/google/gofuzz
|
||||
version: bbcb9da2d746f8bdbd6a936686a0a6067ada0ec5
|
||||
- name: github.com/howeyc/gopass
|
||||
version: 3ca23474a7c7203e0a0a070fd33508f6efdb9b3d
|
||||
- name: github.com/imdario/mergo
|
||||
version: 6633656539c1639d9d78127b7d47c622b5d7b6dc
|
||||
- name: github.com/jonboulle/clockwork
|
||||
version: 2eee05ed794112d45db504eb05aa693efd2b8b09
|
||||
- name: github.com/mailru/easyjson
|
||||
version: d5b7844b561a7bc640052f1b935f7b800330d7e0
|
||||
subpackages:
|
||||
- buffer
|
||||
- jlexer
|
||||
- jwriter
|
||||
- name: github.com/pborman/uuid
|
||||
version: ca53cad383cad2479bbba7f7a1a05797ec1386e4
|
||||
- name: github.com/PuerkitoBio/purell
|
||||
version: 8a290539e2e8629dbc4e6bad948158f790ec31f4
|
||||
- name: github.com/PuerkitoBio/urlesc
|
||||
version: 5bd2802263f21d8788851d5305584c82a5c75d7e
|
||||
- name: github.com/spf13/pflag
|
||||
version: 5ccb023bc27df288a957c5e994cd44fd19619465
|
||||
- name: github.com/ugorji/go
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version: f1f1a805ed361a0e078bb537e4ea78cd37dcf065
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subpackages:
|
||||
- codec
|
||||
- name: golang.org/x/crypto
|
||||
version: 1351f936d976c60a0a48d728281922cf63eafb8d
|
||||
subpackages:
|
||||
- bcrypt
|
||||
- blowfish
|
||||
- ssh/terminal
|
||||
- name: golang.org/x/net
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||||
version: 6acef71eb69611914f7a30939ea9f6e194c78172
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subpackages:
|
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- context
|
||||
- context/ctxhttp
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||||
- http2
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- http2/hpack
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||||
- idna
|
||||
- name: golang.org/x/oauth2
|
||||
version: 3c3a985cb79f52a3190fbc056984415ca6763d01
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subpackages:
|
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- google
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||||
- internal
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||||
- jws
|
||||
- jwt
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||||
- name: golang.org/x/sys
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||||
version: 8f0908ab3b2457e2e15403d3697c9ef5cb4b57a9
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||||
subpackages:
|
||||
- unix
|
||||
- name: golang.org/x/text
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||||
version: 2910a502d2bf9e43193af9d68ca516529614eed3
|
||||
subpackages:
|
||||
- cases
|
||||
- internal/tag
|
||||
- language
|
||||
- runes
|
||||
- secure/bidirule
|
||||
- secure/precis
|
||||
- transform
|
||||
- unicode/bidi
|
||||
- unicode/norm
|
||||
- width
|
||||
- name: google.golang.org/appengine
|
||||
version: 4f7eeb5305a4ba1966344836ba4af9996b7b4e05
|
||||
subpackages:
|
||||
- internal
|
||||
- internal/app_identity
|
||||
- internal/base
|
||||
- internal/datastore
|
||||
- internal/log
|
||||
- internal/modules
|
||||
- internal/remote_api
|
||||
- internal/urlfetch
|
||||
- urlfetch
|
||||
- name: gopkg.in/inf.v0
|
||||
version: 3887ee99ecf07df5b447e9b00d9c0b2adaa9f3e4
|
||||
- name: gopkg.in/yaml.v2
|
||||
version: 53feefa2559fb8dfa8d81baad31be332c97d6c77
|
||||
- name: k8s.io/client-go
|
||||
version: d81cb85237595f720d83eda492bae8f6162fc5c0
|
||||
subpackages:
|
||||
- discovery
|
||||
- kubernetes
|
||||
- kubernetes/typed/apps/v1beta1
|
||||
- kubernetes/typed/authentication/v1beta1
|
||||
- kubernetes/typed/authorization/v1beta1
|
||||
- kubernetes/typed/autoscaling/v1
|
||||
- kubernetes/typed/batch/v1
|
||||
- kubernetes/typed/batch/v2alpha1
|
||||
- kubernetes/typed/certificates/v1alpha1
|
||||
- kubernetes/typed/core/v1
|
||||
- kubernetes/typed/extensions/v1beta1
|
||||
- kubernetes/typed/policy/v1beta1
|
||||
- kubernetes/typed/rbac/v1alpha1
|
||||
- kubernetes/typed/storage/v1beta1
|
||||
- pkg/api
|
||||
- pkg/api/errors
|
||||
- pkg/api/install
|
||||
- pkg/api/meta
|
||||
- pkg/api/meta/metatypes
|
||||
- pkg/api/resource
|
||||
- pkg/api/unversioned
|
||||
- pkg/api/v1
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- pkg/api/validation/path
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||||
- pkg/apimachinery
|
||||
- pkg/apimachinery/announced
|
||||
- pkg/apimachinery/registered
|
||||
- pkg/apis/apps
|
||||
- pkg/apis/apps/install
|
||||
- pkg/apis/apps/v1beta1
|
||||
- pkg/apis/authentication
|
||||
- pkg/apis/authentication/install
|
||||
- pkg/apis/authentication/v1beta1
|
||||
- pkg/apis/authorization
|
||||
- pkg/apis/authorization/install
|
||||
- pkg/apis/authorization/v1beta1
|
||||
- pkg/apis/autoscaling
|
||||
- pkg/apis/autoscaling/install
|
||||
- pkg/apis/autoscaling/v1
|
||||
- pkg/apis/batch
|
||||
- pkg/apis/batch/install
|
||||
- pkg/apis/batch/v1
|
||||
- pkg/apis/batch/v2alpha1
|
||||
- pkg/apis/certificates
|
||||
- pkg/apis/certificates/install
|
||||
- pkg/apis/certificates/v1alpha1
|
||||
- pkg/apis/extensions
|
||||
- pkg/apis/extensions/install
|
||||
- pkg/apis/extensions/v1beta1
|
||||
- pkg/apis/policy
|
||||
- pkg/apis/policy/install
|
||||
- pkg/apis/policy/v1beta1
|
||||
- pkg/apis/rbac
|
||||
- pkg/apis/rbac/install
|
||||
- pkg/apis/rbac/v1alpha1
|
||||
- pkg/apis/storage
|
||||
- pkg/apis/storage/install
|
||||
- pkg/apis/storage/v1beta1
|
||||
- pkg/auth/user
|
||||
- pkg/conversion
|
||||
- pkg/conversion/queryparams
|
||||
- pkg/fields
|
||||
- pkg/genericapiserver/openapi/common
|
||||
- pkg/labels
|
||||
- pkg/runtime
|
||||
- pkg/runtime/serializer
|
||||
- pkg/runtime/serializer/json
|
||||
- pkg/runtime/serializer/protobuf
|
||||
- pkg/runtime/serializer/recognizer
|
||||
- pkg/runtime/serializer/streaming
|
||||
- pkg/runtime/serializer/versioning
|
||||
- pkg/selection
|
||||
- pkg/third_party/forked/golang/reflect
|
||||
- pkg/third_party/forked/golang/template
|
||||
- pkg/types
|
||||
- pkg/util
|
||||
- pkg/util/cert
|
||||
- pkg/util/clock
|
||||
- pkg/util/diff
|
||||
- pkg/util/errors
|
||||
- pkg/util/flowcontrol
|
||||
- pkg/util/framer
|
||||
- pkg/util/homedir
|
||||
- pkg/util/integer
|
||||
- pkg/util/intstr
|
||||
- pkg/util/json
|
||||
- pkg/util/jsonpath
|
||||
- pkg/util/labels
|
||||
- pkg/util/net
|
||||
- pkg/util/parsers
|
||||
- pkg/util/rand
|
||||
- pkg/util/ratelimit
|
||||
- pkg/util/runtime
|
||||
- pkg/util/sets
|
||||
- pkg/util/uuid
|
||||
- pkg/util/validation
|
||||
- pkg/util/validation/field
|
||||
- pkg/util/wait
|
||||
- pkg/util/yaml
|
||||
- pkg/version
|
||||
- pkg/watch
|
||||
- pkg/watch/versioned
|
||||
- plugin/pkg/client/auth
|
||||
- plugin/pkg/client/auth/gcp
|
||||
- plugin/pkg/client/auth/oidc
|
||||
- rest
|
||||
- tools/auth
|
||||
- tools/cache
|
||||
- tools/clientcmd
|
||||
- tools/clientcmd/api
|
||||
- tools/clientcmd/api/latest
|
||||
- tools/clientcmd/api/v1
|
||||
- tools/metrics
|
||||
- transport
|
||||
testImports: []
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||||
|
|
@ -0,0 +1,28 @@
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package: github.bus.zalan.do/mkabilov/postgres-operator
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import:
|
||||
- package: github.com/coreos/etcd
|
||||
version: ^3.1.0-rc.1
|
||||
subpackages:
|
||||
- client
|
||||
- package: github.com/spf13/pflag
|
||||
- package: golang.org/x/net
|
||||
subpackages:
|
||||
- context
|
||||
- package: k8s.io/client-go
|
||||
version: ^2.0.0-alpha.1
|
||||
subpackages:
|
||||
- kubernetes
|
||||
- pkg/api
|
||||
- pkg/api/meta
|
||||
- pkg/api/resource
|
||||
- pkg/api/unversioned
|
||||
- pkg/api/v1
|
||||
- pkg/apis/apps/v1beta1
|
||||
- pkg/apis/extensions/v1beta1
|
||||
- pkg/fields
|
||||
- pkg/runtime
|
||||
- pkg/runtime/serializer
|
||||
- pkg/util/intstr
|
||||
- rest
|
||||
- tools/cache
|
||||
- tools/clientcmd
|
||||
|
|
@ -0,0 +1,42 @@
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package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"log"
|
||||
"os"
|
||||
"os/signal"
|
||||
"sync"
|
||||
"syscall"
|
||||
|
||||
"github.bus.zalan.do/acid/postgres-operator/operator"
|
||||
"github.com/spf13/pflag"
|
||||
)
|
||||
|
||||
var options operator.Options
|
||||
|
||||
func init() {
|
||||
pflag.StringVar(&options.KubeConfig, "kubeconfig", "", "Path to kubeconfig file with authorization and master location information.")
|
||||
}
|
||||
|
||||
func main() {
|
||||
// Set logging output to standard console out
|
||||
log.SetOutput(os.Stdout)
|
||||
|
||||
pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
|
||||
pflag.Parse()
|
||||
|
||||
sigs := make(chan os.Signal, 1)
|
||||
stop := make(chan struct{})
|
||||
signal.Notify(sigs, os.Interrupt, syscall.SIGTERM) // Push signals into channel
|
||||
|
||||
wg := &sync.WaitGroup{} // Goroutines can add themselves to this to be waited on
|
||||
|
||||
spiloOperator := operator.New(options)
|
||||
spiloOperator.Run(stop, wg)
|
||||
|
||||
sig := <-sigs // Wait for signals (this hangs until a signal arrives)
|
||||
log.Printf("Shutting down... %+v", sig)
|
||||
|
||||
close(stop) // Tell goroutines to stop themselves
|
||||
wg.Wait() // Wait for all to be stopped
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
package operator
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/coreos/etcd/client"
|
||||
"golang.org/x/net/context"
|
||||
"log"
|
||||
)
|
||||
|
||||
func (z *PgZooKeeper) DeleteEtcdKey(clusterName string) error {
|
||||
options := client.DeleteOptions{
|
||||
Recursive: true,
|
||||
}
|
||||
|
||||
keyName := fmt.Sprintf(etcdKeyTemplate, clusterName)
|
||||
|
||||
resp, err := z.etcdApiClient.Delete(context.Background(), keyName, &options)
|
||||
if resp != nil {
|
||||
log.Printf("Response: %+v", *resp)
|
||||
} else {
|
||||
log.Fatal("No response from etcd")
|
||||
}
|
||||
|
||||
log.Printf("Deleting key %s from ETCD", clusterName)
|
||||
|
||||
return err
|
||||
}
|
||||
|
|
@ -0,0 +1,234 @@
|
|||
package operator
|
||||
|
||||
import (
|
||||
"k8s.io/client-go/pkg/api/resource"
|
||||
"k8s.io/client-go/pkg/api/v1"
|
||||
"k8s.io/client-go/pkg/apis/apps/v1beta1"
|
||||
"k8s.io/client-go/pkg/util/intstr"
|
||||
"log"
|
||||
)
|
||||
|
||||
func (z *PgZooKeeper) CreateStatefulSet(spilo *Spilo) {
|
||||
ns := (*spilo).Metadata.Namespace
|
||||
|
||||
statefulSet := z.createSetFromSpilo(spilo)
|
||||
|
||||
_, err := z.Clientset.StatefulSets(ns).Create(&statefulSet)
|
||||
if err != nil {
|
||||
log.Printf("Petset error: %+v", err)
|
||||
} else {
|
||||
log.Printf("Petset created: %+v", statefulSet)
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) createSetFromSpilo(spilo *Spilo) v1beta1.StatefulSet {
|
||||
clusterName := (*spilo).Metadata.Name
|
||||
|
||||
envVars := []v1.EnvVar{
|
||||
{
|
||||
Name: "SCOPE",
|
||||
Value: clusterName,
|
||||
},
|
||||
{
|
||||
Name: "PGROOT",
|
||||
Value: "/home/postgres/pgdata/pgroot",
|
||||
},
|
||||
{
|
||||
Name: "ETCD_HOST",
|
||||
Value: spilo.Spec.EtcdHost,
|
||||
},
|
||||
{
|
||||
Name: "POD_IP",
|
||||
ValueFrom: &v1.EnvVarSource{
|
||||
FieldRef: &v1.ObjectFieldSelector{
|
||||
APIVersion: "v1",
|
||||
FieldPath: "status.podIP",
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "POD_NAMESPACE",
|
||||
ValueFrom: &v1.EnvVarSource{
|
||||
FieldRef: &v1.ObjectFieldSelector{
|
||||
APIVersion: "v1",
|
||||
FieldPath: "metadata.namespace",
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "PGPASSWORD_SUPERUSER",
|
||||
ValueFrom: &v1.EnvVarSource{
|
||||
SecretKeyRef: &v1.SecretKeySelector{
|
||||
LocalObjectReference: v1.LocalObjectReference{
|
||||
Name: clusterName,
|
||||
},
|
||||
Key: "superuser-password",
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "PGPASSWORD_ADMIN",
|
||||
ValueFrom: &v1.EnvVarSource{
|
||||
SecretKeyRef: &v1.SecretKeySelector{
|
||||
LocalObjectReference: v1.LocalObjectReference{
|
||||
Name: clusterName,
|
||||
},
|
||||
Key: "admin-password",
|
||||
},
|
||||
},
|
||||
},
|
||||
{
|
||||
Name: "PGPASSWORD_STANDBY",
|
||||
ValueFrom: &v1.EnvVarSource{
|
||||
SecretKeyRef: &v1.SecretKeySelector{
|
||||
LocalObjectReference: v1.LocalObjectReference{
|
||||
Name: clusterName,
|
||||
},
|
||||
Key: "replication-password",
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
resourceList := v1.ResourceList{}
|
||||
|
||||
if (*spilo).Spec.ResourceCPU != "" {
|
||||
resourceList[v1.ResourceCPU] = resource.MustParse((*spilo).Spec.ResourceCPU)
|
||||
}
|
||||
|
||||
if (*spilo).Spec.ResourceMemory != "" {
|
||||
resourceList[v1.ResourceMemory] = resource.MustParse((*spilo).Spec.ResourceMemory)
|
||||
}
|
||||
|
||||
container := v1.Container{
|
||||
Name: clusterName,
|
||||
Image: spilo.Spec.DockerImage,
|
||||
ImagePullPolicy: v1.PullAlways,
|
||||
Resources: v1.ResourceRequirements{
|
||||
Requests: resourceList,
|
||||
},
|
||||
Ports: []v1.ContainerPort{
|
||||
{
|
||||
ContainerPort: 8008,
|
||||
Protocol: v1.ProtocolTCP,
|
||||
},
|
||||
{
|
||||
ContainerPort: 5432,
|
||||
Protocol: v1.ProtocolTCP,
|
||||
},
|
||||
},
|
||||
VolumeMounts: []v1.VolumeMount{
|
||||
{
|
||||
Name: "pgdata",
|
||||
MountPath: "/home/postgres/pgdata",
|
||||
},
|
||||
},
|
||||
Env: envVars,
|
||||
}
|
||||
|
||||
terminateGracePeriodSeconds := int64(0)
|
||||
|
||||
podSpec := v1.PodSpec{
|
||||
TerminationGracePeriodSeconds: &terminateGracePeriodSeconds,
|
||||
Volumes: []v1.Volume{
|
||||
{
|
||||
Name: "pgdata",
|
||||
VolumeSource: v1.VolumeSource{EmptyDir: &v1.EmptyDirVolumeSource{}},
|
||||
},
|
||||
},
|
||||
Containers: []v1.Container{container},
|
||||
}
|
||||
|
||||
template := v1.PodTemplateSpec{
|
||||
ObjectMeta: v1.ObjectMeta{
|
||||
Labels: map[string]string{
|
||||
"application": "spilo",
|
||||
"spilo-cluster": clusterName,
|
||||
},
|
||||
Annotations: map[string]string{"pod.alpha.kubernetes.io/initialized": "true"},
|
||||
},
|
||||
Spec: podSpec,
|
||||
}
|
||||
|
||||
return v1beta1.StatefulSet{
|
||||
ObjectMeta: v1.ObjectMeta{
|
||||
Name: clusterName,
|
||||
Labels: map[string]string{
|
||||
"application": "spilo",
|
||||
"spilo-cluster": clusterName,
|
||||
},
|
||||
},
|
||||
Spec: v1beta1.StatefulSetSpec{
|
||||
Replicas: &spilo.Spec.NumberOfInstances,
|
||||
ServiceName: clusterName,
|
||||
Template: template,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) CreateSecrets(ns, name string) {
|
||||
secret := v1.Secret{
|
||||
ObjectMeta: v1.ObjectMeta{
|
||||
Name: name,
|
||||
Labels: map[string]string{
|
||||
"application": "spilo",
|
||||
"spilo-cluster": name,
|
||||
},
|
||||
},
|
||||
Type: v1.SecretTypeOpaque,
|
||||
Data: map[string][]byte{
|
||||
"superuser-password": []byte("emFsYW5kbw=="),
|
||||
"replication-password": []byte("cmVwLXBhc3M="),
|
||||
"admin-password": []byte("YWRtaW4="),
|
||||
},
|
||||
}
|
||||
|
||||
_, err := z.Clientset.Secrets(ns).Create(&secret)
|
||||
if err != nil {
|
||||
log.Printf("Secret error: %+v", err)
|
||||
} else {
|
||||
log.Printf("Secret created: %+v", secret)
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) CreateService(ns, name string) {
|
||||
service := v1.Service{
|
||||
ObjectMeta: v1.ObjectMeta{
|
||||
Name: name,
|
||||
Labels: map[string]string{
|
||||
"application": "spilo",
|
||||
"spilo-cluster": name,
|
||||
},
|
||||
},
|
||||
Spec: v1.ServiceSpec{
|
||||
Type: v1.ServiceTypeClusterIP,
|
||||
Ports: []v1.ServicePort{{Port: 5432, TargetPort: intstr.IntOrString{IntVal: 5432}}},
|
||||
},
|
||||
}
|
||||
|
||||
_, err := z.Clientset.Services(ns).Create(&service)
|
||||
if err != nil {
|
||||
log.Printf("Service error: %+v", err)
|
||||
} else {
|
||||
log.Printf("Service created: %+v", service)
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) CreateEndPoint(ns, name string) {
|
||||
endPoint := v1.Endpoints{
|
||||
ObjectMeta: v1.ObjectMeta{
|
||||
Name: name,
|
||||
Labels: map[string]string{
|
||||
"application": "spilo",
|
||||
"spilo-cluster": name,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
_, err := z.Clientset.Endpoints(ns).Create(&endPoint)
|
||||
if err != nil {
|
||||
log.Printf("Endpoint error: %+v", err)
|
||||
} else {
|
||||
log.Printf("Endpoint created: %+v", endPoint)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,123 @@
|
|||
package operator
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"time"
|
||||
|
||||
"k8s.io/client-go/kubernetes"
|
||||
"k8s.io/client-go/pkg/api"
|
||||
"k8s.io/client-go/pkg/api/unversioned"
|
||||
"k8s.io/client-go/pkg/api/v1"
|
||||
"k8s.io/client-go/pkg/apis/extensions/v1beta1"
|
||||
"k8s.io/client-go/pkg/runtime"
|
||||
"k8s.io/client-go/pkg/runtime/serializer"
|
||||
"k8s.io/client-go/rest"
|
||||
"k8s.io/client-go/tools/clientcmd"
|
||||
)
|
||||
|
||||
var (
|
||||
etcdHostOutside string
|
||||
|
||||
VENDOR = "acid.zalan.do"
|
||||
VERSION = "0.0.1.dev"
|
||||
resyncPeriod = 5 * time.Minute
|
||||
|
||||
etcdKeyTemplate = "/service/%s"
|
||||
)
|
||||
|
||||
type Options struct {
|
||||
KubeConfig string
|
||||
}
|
||||
|
||||
type Pgconf struct {
|
||||
Parameter string `json:"param"`
|
||||
Value string `json:"value"`
|
||||
}
|
||||
|
||||
type SpiloSpec struct {
|
||||
EtcdHost string `json:"etcd_host"`
|
||||
VolumeSize int `json:"volume_size"`
|
||||
NumberOfInstances int32 `json:"number_of_instances"`
|
||||
DockerImage string `json:"docker_image"`
|
||||
PostgresConfiguration []Pgconf `json:"postgres_configuration"`
|
||||
ResourceCPU string `json:"resource_cpu"`
|
||||
ResourceMemory string `json:"resource_memory"`
|
||||
}
|
||||
|
||||
type Spilo struct {
|
||||
unversioned.TypeMeta `json:",inline"`
|
||||
Metadata api.ObjectMeta `json:"metadata"`
|
||||
Spec SpiloSpec `json:"spec"`
|
||||
}
|
||||
|
||||
type SpiloList struct {
|
||||
unversioned.TypeMeta `json:",inline"`
|
||||
Metadata unversioned.ListMeta `json:"metadata"`
|
||||
Items []Spilo `json:"items"`
|
||||
}
|
||||
|
||||
func KubernetesConfig(options Options) *rest.Config {
|
||||
rules := clientcmd.NewDefaultClientConfigLoadingRules()
|
||||
overrides := &clientcmd.ConfigOverrides{}
|
||||
|
||||
if options.KubeConfig != "" {
|
||||
rules.ExplicitPath = options.KubeConfig
|
||||
}
|
||||
|
||||
config, err := clientcmd.NewNonInteractiveDeferredLoadingClientConfig(rules, overrides).ClientConfig()
|
||||
|
||||
etcdHostOutside = config.Host
|
||||
|
||||
if err != nil {
|
||||
log.Fatalf("Couldn't get Kubernetes default config: %s", err)
|
||||
}
|
||||
|
||||
return config
|
||||
}
|
||||
|
||||
func newKubernetesSpiloClient(c *rest.Config) (*rest.RESTClient, error) {
|
||||
c.APIPath = "/apis"
|
||||
c.GroupVersion = &unversioned.GroupVersion{
|
||||
Group: VENDOR,
|
||||
Version: "v1",
|
||||
}
|
||||
c.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: api.Codecs}
|
||||
|
||||
schemeBuilder := runtime.NewSchemeBuilder(
|
||||
func(scheme *runtime.Scheme) error {
|
||||
scheme.AddKnownTypes(
|
||||
*c.GroupVersion,
|
||||
&Spilo{},
|
||||
&SpiloList{},
|
||||
&api.ListOptions{},
|
||||
&api.DeleteOptions{},
|
||||
)
|
||||
return nil
|
||||
})
|
||||
schemeBuilder.AddToScheme(api.Scheme)
|
||||
|
||||
return rest.RESTClientFor(c)
|
||||
}
|
||||
|
||||
func EnsureSpiloThirdPartyResource(client *kubernetes.Clientset) error {
|
||||
_, err := client.ExtensionsV1beta1().ThirdPartyResources().Get(fmt.Sprintf("spilo.%s", VENDOR))
|
||||
if err == nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// The resource doesn't exist, so we create it.
|
||||
tpr := v1beta1.ThirdPartyResource{
|
||||
ObjectMeta: v1.ObjectMeta{
|
||||
Name: fmt.Sprintf("spilo.%s", VENDOR),
|
||||
},
|
||||
Description: "A specification of Spilo StatefulSets",
|
||||
Versions: []v1beta1.APIVersion{
|
||||
{Name: "v1"},
|
||||
},
|
||||
}
|
||||
|
||||
_, err = client.ExtensionsV1beta1().ThirdPartyResources().Create(&tpr)
|
||||
|
||||
return err
|
||||
}
|
||||
|
|
@ -0,0 +1,99 @@
|
|||
package operator
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"log"
|
||||
"sync"
|
||||
|
||||
"k8s.io/client-go/kubernetes"
|
||||
"k8s.io/client-go/pkg/api/meta"
|
||||
"k8s.io/client-go/pkg/api/unversioned"
|
||||
"k8s.io/client-go/rest"
|
||||
)
|
||||
|
||||
type SpiloOperator struct {
|
||||
Options
|
||||
|
||||
ClientSet *kubernetes.Clientset
|
||||
SpiloClient *rest.RESTClient
|
||||
|
||||
SpiloZooKeeper *PgZooKeeper
|
||||
}
|
||||
|
||||
func New(options Options) *SpiloOperator {
|
||||
config := KubernetesConfig(options)
|
||||
|
||||
clientSet, err := kubernetes.NewForConfig(config)
|
||||
if err != nil {
|
||||
log.Fatalf("Couldn't create Kubernetes client: %s", err)
|
||||
}
|
||||
|
||||
spiloClient, err := newKubernetesSpiloClient(config)
|
||||
if err != nil {
|
||||
log.Fatalf("Couldn't create Spilo client: %s", err)
|
||||
}
|
||||
|
||||
operator := &SpiloOperator{
|
||||
Options: options,
|
||||
ClientSet: clientSet,
|
||||
SpiloClient: spiloClient,
|
||||
SpiloZooKeeper: newZookeeper(spiloClient, clientSet),
|
||||
}
|
||||
|
||||
return operator
|
||||
}
|
||||
|
||||
func (o *SpiloOperator) Run(stopCh <-chan struct{}, wg *sync.WaitGroup) {
|
||||
log.Printf("Spilo operator %v\n", VERSION)
|
||||
|
||||
go o.SpiloZooKeeper.Run(stopCh, wg)
|
||||
|
||||
log.Println("Started working in background")
|
||||
}
|
||||
|
||||
// The code below is used only to work around a known problem with third-party
|
||||
// resources and ugorji. If/when these issues are resolved, the code below
|
||||
// should no longer be required.
|
||||
//
|
||||
|
||||
func (s *Spilo) GetObjectKind() unversioned.ObjectKind {
|
||||
return &s.TypeMeta
|
||||
}
|
||||
|
||||
func (s *Spilo) GetObjectMeta() meta.Object {
|
||||
return &s.Metadata
|
||||
}
|
||||
func (sl *SpiloList) GetObjectKind() unversioned.ObjectKind {
|
||||
return &sl.TypeMeta
|
||||
}
|
||||
|
||||
func (sl *SpiloList) GetListMeta() unversioned.List {
|
||||
return &sl.Metadata
|
||||
}
|
||||
|
||||
type SpiloListCopy SpiloList
|
||||
type SpiloCopy Spilo
|
||||
|
||||
func (e *Spilo) UnmarshalJSON(data []byte) error {
|
||||
tmp := SpiloCopy{}
|
||||
err := json.Unmarshal(data, &tmp)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tmp2 := Spilo(tmp)
|
||||
*e = tmp2
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (el *SpiloList) UnmarshalJSON(data []byte) error {
|
||||
tmp := SpiloListCopy{}
|
||||
err := json.Unmarshal(data, &tmp)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tmp2 := SpiloList(tmp)
|
||||
*el = tmp2
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,318 @@
|
|||
package operator
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
etcdclient "github.com/coreos/etcd/client"
|
||||
"k8s.io/client-go/kubernetes"
|
||||
"k8s.io/client-go/pkg/api"
|
||||
"k8s.io/client-go/pkg/api/v1"
|
||||
"k8s.io/client-go/pkg/fields"
|
||||
"k8s.io/client-go/rest"
|
||||
"k8s.io/client-go/tools/cache"
|
||||
)
|
||||
|
||||
const (
|
||||
ACTION_DELETE = "delete"
|
||||
ACTION_UPDATE = "update"
|
||||
ACTION_ADD = "add"
|
||||
)
|
||||
|
||||
type podEvent struct {
|
||||
namespace string
|
||||
name string
|
||||
actionType string
|
||||
}
|
||||
|
||||
type podWatcher struct {
|
||||
podNamespace string
|
||||
podName string
|
||||
eventsChannel chan podEvent
|
||||
subscribe bool
|
||||
}
|
||||
|
||||
type PgZooKeeper struct {
|
||||
podEvents chan podEvent
|
||||
podWatchers chan podWatcher
|
||||
SpiloClient *rest.RESTClient
|
||||
Clientset *kubernetes.Clientset
|
||||
|
||||
spiloInformer cache.SharedIndexInformer
|
||||
podInformer cache.SharedIndexInformer
|
||||
etcdApiClient etcdclient.KeysAPI
|
||||
}
|
||||
|
||||
func podsListWatch(client *kubernetes.Clientset) *cache.ListWatch {
|
||||
return cache.NewListWatchFromClient(client.Core().RESTClient(), "pods", api.NamespaceAll, fields.Everything())
|
||||
}
|
||||
|
||||
func newZookeeper(spiloClient *rest.RESTClient, clientset *kubernetes.Clientset) *PgZooKeeper {
|
||||
pgZooKeeper := &PgZooKeeper{
|
||||
SpiloClient: spiloClient,
|
||||
Clientset: clientset,
|
||||
}
|
||||
|
||||
spiloInformer := cache.NewSharedIndexInformer(
|
||||
cache.NewListWatchFromClient(spiloClient, "spilos", api.NamespaceAll, fields.Everything()),
|
||||
&Spilo{},
|
||||
resyncPeriod,
|
||||
cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
|
||||
)
|
||||
|
||||
spiloInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
|
||||
AddFunc: pgZooKeeper.spiloAdd,
|
||||
UpdateFunc: pgZooKeeper.spiloUpdate,
|
||||
DeleteFunc: pgZooKeeper.spiloDelete,
|
||||
})
|
||||
|
||||
podInformer := cache.NewSharedIndexInformer(
|
||||
podsListWatch(clientset),
|
||||
&v1.Pod{},
|
||||
resyncPeriod,
|
||||
cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
|
||||
)
|
||||
|
||||
podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
|
||||
AddFunc: pgZooKeeper.podAdd,
|
||||
UpdateFunc: pgZooKeeper.podUpdate,
|
||||
DeleteFunc: pgZooKeeper.podDelete,
|
||||
})
|
||||
|
||||
pgZooKeeper.spiloInformer = spiloInformer
|
||||
pgZooKeeper.podInformer = podInformer
|
||||
|
||||
cfg := etcdclient.Config{
|
||||
Endpoints: []string{etcdHostOutside},
|
||||
Transport: etcdclient.DefaultTransport,
|
||||
HeaderTimeoutPerRequest: time.Second,
|
||||
}
|
||||
|
||||
c, err := etcdclient.New(cfg)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
pgZooKeeper.etcdApiClient = etcdclient.NewKeysAPI(c)
|
||||
pgZooKeeper.podEvents = make(chan podEvent)
|
||||
|
||||
return pgZooKeeper
|
||||
}
|
||||
|
||||
func (d *PgZooKeeper) podAdd(obj interface{}) {
|
||||
pod := obj.(*v1.Pod)
|
||||
d.podEvents <- podEvent{
|
||||
namespace: pod.Namespace,
|
||||
name: pod.Name,
|
||||
actionType: ACTION_ADD,
|
||||
}
|
||||
}
|
||||
|
||||
func (d *PgZooKeeper) podDelete(obj interface{}) {
|
||||
pod := obj.(*v1.Pod)
|
||||
d.podEvents <- podEvent{
|
||||
namespace: pod.Namespace,
|
||||
name: pod.Name,
|
||||
actionType: ACTION_DELETE,
|
||||
}
|
||||
}
|
||||
|
||||
func (d *PgZooKeeper) podUpdate(old, cur interface{}) {
|
||||
oldPod := old.(*v1.Pod)
|
||||
d.podEvents <- podEvent{
|
||||
namespace: oldPod.Namespace,
|
||||
name: oldPod.Name,
|
||||
actionType: ACTION_UPDATE,
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) Run(stopCh <-chan struct{}, wg *sync.WaitGroup) {
|
||||
defer wg.Done()
|
||||
wg.Add(1)
|
||||
|
||||
if err := EnsureSpiloThirdPartyResource(z.Clientset); err != nil {
|
||||
log.Fatalf("Couldn't create ThirdPartyResource: %s", err)
|
||||
}
|
||||
|
||||
go z.spiloInformer.Run(stopCh)
|
||||
go z.podInformer.Run(stopCh)
|
||||
go z.podWatcher(stopCh)
|
||||
|
||||
<-stopCh
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) spiloAdd(obj interface{}) {
|
||||
spilo := obj.(*Spilo)
|
||||
|
||||
clusterName := (*spilo).Metadata.Name
|
||||
ns := (*spilo).Metadata.Namespace
|
||||
|
||||
z.CreateEndPoint(ns, clusterName)
|
||||
z.CreateService(ns, clusterName)
|
||||
z.CreateSecrets(ns, clusterName)
|
||||
z.CreateStatefulSet(spilo)
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) spiloUpdate(old, cur interface{}) {
|
||||
oldSpilo := old.(*Spilo)
|
||||
curSpilo := cur.(*Spilo)
|
||||
|
||||
if oldSpilo.Spec.NumberOfInstances != curSpilo.Spec.NumberOfInstances {
|
||||
z.UpdateStatefulSet(curSpilo)
|
||||
}
|
||||
|
||||
if oldSpilo.Spec.DockerImage != curSpilo.Spec.DockerImage {
|
||||
z.UpdateStatefulSetImage(curSpilo)
|
||||
}
|
||||
|
||||
log.Printf("Update spilo old: %+v cur: %+v", *oldSpilo, *curSpilo)
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) spiloDelete(obj interface{}) {
|
||||
spilo := obj.(*Spilo)
|
||||
|
||||
err := z.DeleteStatefulSet(spilo.Metadata.Namespace, spilo.Metadata.Name)
|
||||
if err != nil {
|
||||
log.Printf("Error while deleting stateful set: %+v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) DeleteStatefulSet(ns, clusterName string) error {
|
||||
orphanDependents := false
|
||||
deleteOptions := v1.DeleteOptions{
|
||||
OrphanDependents: &orphanDependents,
|
||||
}
|
||||
|
||||
listOptions := v1.ListOptions{
|
||||
LabelSelector: fmt.Sprintf("%s=%s", "spilo-cluster", clusterName),
|
||||
}
|
||||
|
||||
podList, err := z.Clientset.Pods(ns).List(listOptions)
|
||||
if err != nil {
|
||||
log.Printf("Error: %+v", err)
|
||||
}
|
||||
|
||||
err = z.Clientset.StatefulSets(ns).Delete(clusterName, &deleteOptions)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
log.Printf("StatefulSet %s.%s has been deleted\n", ns, clusterName)
|
||||
|
||||
for _, pod := range podList.Items {
|
||||
err = z.Clientset.Pods(pod.Namespace).Delete(pod.Name, &deleteOptions)
|
||||
if err != nil {
|
||||
log.Printf("Error while deleting Pod %s: %+v", pod.Name, err)
|
||||
return err
|
||||
}
|
||||
|
||||
log.Printf("Pod %s.%s has been deleted\n", pod.Namespace, pod.Name)
|
||||
}
|
||||
|
||||
serviceList, err := z.Clientset.Services(ns).List(listOptions)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for _, service := range serviceList.Items {
|
||||
err = z.Clientset.Services(service.Namespace).Delete(service.Name, &deleteOptions)
|
||||
if err != nil {
|
||||
log.Printf("Error while deleting Service %s: %+v", service.Name, err)
|
||||
|
||||
return err
|
||||
}
|
||||
|
||||
log.Printf("Service %s.%s has been deleted\n", service.Namespace, service.Name)
|
||||
}
|
||||
|
||||
z.DeleteEtcdKey(clusterName)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) UpdateStatefulSet(spilo *Spilo) {
|
||||
ns := (*spilo).Metadata.Namespace
|
||||
|
||||
statefulSet := z.createSetFromSpilo(spilo)
|
||||
_, err := z.Clientset.StatefulSets(ns).Update(&statefulSet)
|
||||
|
||||
if err != nil {
|
||||
log.Printf("Error while updating StatefulSet: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) UpdateStatefulSetImage(spilo *Spilo) {
|
||||
ns := (*spilo).Metadata.Namespace
|
||||
|
||||
z.UpdateStatefulSet(spilo)
|
||||
|
||||
listOptions := v1.ListOptions{
|
||||
LabelSelector: fmt.Sprintf("%s=%s", "spilo-cluster", (*spilo).Metadata.Name),
|
||||
}
|
||||
|
||||
pods, err := z.Clientset.Pods(ns).List(listOptions)
|
||||
if err != nil {
|
||||
log.Printf("Error while getting pods: %s", err)
|
||||
}
|
||||
|
||||
orphanDependents := true
|
||||
deleteOptions := v1.DeleteOptions{
|
||||
OrphanDependents: &orphanDependents,
|
||||
}
|
||||
|
||||
var masterPodName string
|
||||
for _, pod := range pods.Items {
|
||||
log.Printf("Pod processing: %s", pod.Name)
|
||||
|
||||
role, ok := pod.Labels["spilo-role"]
|
||||
if ok == false {
|
||||
log.Println("No spilo-role label")
|
||||
continue
|
||||
}
|
||||
if role == "master" {
|
||||
masterPodName = pod.Name
|
||||
log.Printf("Skipping master: %s", masterPodName)
|
||||
continue
|
||||
}
|
||||
|
||||
err := z.Clientset.Pods(ns).Delete(pod.Name, &deleteOptions)
|
||||
if err != nil {
|
||||
log.Printf("Error while deleting Pod %s.%s: %s", pod.Namespace, pod.Name, err)
|
||||
} else {
|
||||
log.Printf("Pod deleted: %s.%s", pod.Namespace, pod.Name)
|
||||
}
|
||||
|
||||
//TODO: wait until Pod recreated
|
||||
}
|
||||
|
||||
//TODO: do manual failover
|
||||
err = z.Clientset.Pods(ns).Delete(masterPodName, &deleteOptions)
|
||||
if err != nil {
|
||||
log.Printf("Error while deleting Pod %s.%s: %s", ns, masterPodName, err)
|
||||
} else {
|
||||
log.Printf("Pod deleted: %s.%s", ns, masterPodName)
|
||||
}
|
||||
}
|
||||
|
||||
func (z *PgZooKeeper) podWatcher(stopCh <-chan struct{}) {
|
||||
watchers := make(map[string]chan podEvent)
|
||||
for {
|
||||
select {
|
||||
case watcher := <-z.podWatchers:
|
||||
if watcher.subscribe {
|
||||
watchers[watcher.podName] = watcher.eventsChannel
|
||||
} else {
|
||||
close(watcher.eventsChannel)
|
||||
delete(watchers, watcher.podName)
|
||||
}
|
||||
case podEvent := <-z.podEvents:
|
||||
podChannel, ok := watchers[podEvent.name]
|
||||
if ok == false {
|
||||
continue
|
||||
}
|
||||
|
||||
podChannel <- podEvent
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
apiVersion: "acid.zalan.do/v1"
|
||||
kind: Spilo
|
||||
|
||||
metadata:
|
||||
name: testcluster
|
||||
|
||||
spec:
|
||||
etcd_host: etcd-client.default.svc.cluster.local:2379
|
||||
volume_size: 100 # GB
|
||||
resource_cpu: 111m
|
||||
resource_memory: 222Mi
|
||||
number_of_instances: 3
|
||||
docker_image: registry.opensource.zalan.do/acid/spilotest-9.6:1.1-p10 # put the spilo image here
|
||||
postgres_configuration:
|
||||
- param: "max_connections"
|
||||
value: "10"
|
||||
- param: "shared_buffers"
|
||||
value: "500MB"
|
||||
Loading…
Reference in New Issue