diff --git a/Dockerfile b/Dockerfile index 0644f5a..1f2b5b1 100644 --- a/Dockerfile +++ b/Dockerfile @@ -1,4 +1,4 @@ -FROM golang:1.21 as build +FROM golang:1.22 as build WORKDIR /app diff --git a/go.mod b/go.mod index b847bcb..a9b8f1a 100644 --- a/go.mod +++ b/go.mod @@ -1,26 +1,62 @@ module git.uploadfilter24.eu/covidnetes/metallb-ip-floater -go 1.21.1 +go 1.22.0 + +toolchain go1.23.2 require ( github.com/gorilla/mux v1.8.1 - github.com/hetznercloud/hcloud-go v1.53.0 + github.com/hetznercloud/hcloud-go v1.59.1 github.com/jinzhu/configor v1.2.2 - github.com/prometheus/client_model v0.5.0 - github.com/prometheus/common v0.46.0 + github.com/prometheus/client_model v0.6.1 + github.com/prometheus/common v0.60.0 github.com/sirupsen/logrus v1.9.3 + k8s.io/client-go v0.31.1 ) require ( - github.com/BurntSushi/toml v1.3.2 // indirect + github.com/BurntSushi/toml v1.4.0 // indirect github.com/beorn7/perks v1.0.1 // indirect - github.com/cespare/xxhash/v2 v2.2.0 // indirect - github.com/kr/text v0.2.0 // indirect - github.com/prometheus/client_golang v1.18.0 // indirect - github.com/prometheus/procfs v0.12.0 // indirect - golang.org/x/net v0.20.0 // indirect - golang.org/x/sys v0.16.0 // indirect - golang.org/x/text v0.14.0 // indirect - google.golang.org/protobuf v1.32.0 // indirect + github.com/cespare/xxhash/v2 v2.3.0 // indirect + github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect + github.com/emicklei/go-restful/v3 v3.11.0 // indirect + github.com/fxamacker/cbor/v2 v2.7.0 // indirect + github.com/go-logr/logr v1.4.2 // indirect + github.com/go-openapi/jsonpointer v0.19.6 // indirect + github.com/go-openapi/jsonreference v0.20.2 // indirect + github.com/go-openapi/swag v0.22.4 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/protobuf v1.5.4 // indirect + github.com/google/gnostic-models v0.6.8 // indirect + github.com/google/go-cmp v0.6.0 // indirect + github.com/google/gofuzz v1.2.0 // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/compress v1.17.9 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/prometheus/client_golang v1.20.4 // indirect + github.com/prometheus/procfs v0.15.1 // indirect + github.com/x448/float16 v0.8.4 // indirect + golang.org/x/net v0.30.0 // indirect + golang.org/x/oauth2 v0.23.0 // indirect + golang.org/x/sys v0.26.0 // indirect + golang.org/x/term v0.25.0 // indirect + golang.org/x/text v0.19.0 // indirect + golang.org/x/time v0.3.0 // indirect + google.golang.org/protobuf v1.35.1 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/api v0.31.1 // indirect + k8s.io/apimachinery v0.31.1 // indirect + k8s.io/klog/v2 v2.130.1 // indirect + k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340 // indirect + k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 // indirect + sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect + sigs.k8s.io/yaml v1.4.0 // indirect ) diff --git a/go.sum b/go.sum index cfdcea7..0a919fa 100644 --- a/go.sum +++ b/go.sum @@ -1,56 +1,181 @@ github.com/BurntSushi/toml v1.2.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= -github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8= -github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= +github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0= +github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho= github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= -github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44= -github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs= +github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= +github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM= +github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g= +github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc= +github.com/fxamacker/cbor/v2 v2.7.0 h1:iM5WgngdRBanHcxugY4JySA0nk1wZorNOpTgCMedv5E= +github.com/fxamacker/cbor/v2 v2.7.0/go.mod h1:pxXPTn3joSm21Gbwsv0w9OSA2y1HFR9qXEeXQVeNoDQ= +github.com/go-logr/logr v1.4.2 h1:6pFjapn8bFcIbiKo3XT4j/BhANplGihG6tvd+8rYgrY= +github.com/go-logr/logr v1.4.2/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= +github.com/go-openapi/jsonpointer v0.19.6 h1:eCs3fxoIi3Wh6vtgmLTOjdhSpiqphQ+DaPn38N2ZdrE= +github.com/go-openapi/jsonpointer v0.19.6/go.mod h1:osyAmYz/mB/C3I+WsTTSgw1ONzaLJoLCyoi6/zppojs= +github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE= 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h1:BZqlfIlq5YbRMFko6/PM7FjZpUb45WallggurYhKGag= +k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340/go.mod h1:yD4MZYeKMBwQKVht279WycxKyM84kkAx2DPrTXaeb98= +k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 h1:pUdcCO1Lk/tbT5ztQWOBi5HBgbBP1J8+AsQnQCKsi8A= +k8s.io/utils v0.0.0-20240711033017-18e509b52bc8/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0= +sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo= +sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0= +sigs.k8s.io/structured-merge-diff/v4 v4.4.1 h1:150L+0vs/8DA78h1u02ooW1/fFq/Lwr+sGiqlzvrtq4= +sigs.k8s.io/structured-merge-diff/v4 v4.4.1/go.mod h1:N8hJocpFajUSSeSJ9bOZ77VzejKZaXsTtZo4/u7Io08= +sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E= +sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY= diff --git a/internal/hetzner.go b/internal/hetzner.go index 3b4f4e4..185c0c3 100644 --- a/internal/hetzner.go +++ b/internal/hetzner.go @@ -83,6 +83,10 @@ func AttachFloatingIpToNode(cfg *Config, server hcloud.Server) error { log.WithFields(log.Fields{ "Caller": "AttachFloatingIpToNode", }).Info(fmt.Sprintf("Floating IP %s already assigned to Node %s", cfg.FloatingIPName, server.Name)) + err = LabelNode(server.Name) + if err != nil { + return errors.New(fmt.Sprintf("Could not label node: %s", err.Error())) + } return nil } } @@ -95,5 +99,11 @@ func AttachFloatingIpToNode(cfg *Config, server hcloud.Server) error { log.WithFields(log.Fields{ "Caller": "AttachFloatingIpToNode", }).Info(fmt.Sprintf("Attached floating ip %s to node %s", cfg.FloatingIPName, server.Name)) + + err = LabelNode(server.Name) + if err != nil { + return errors.New(fmt.Sprintf("Could not label node: %s", err.Error())) + } + return err } diff --git a/internal/kube.go b/internal/kube.go new file mode 100644 index 0000000..ce18745 --- /dev/null +++ b/internal/kube.go @@ -0,0 +1,94 @@ +package internal + +import ( + "context" + "errors" + "fmt" + + log "github.com/sirupsen/logrus" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/rest" +) + +func generateClient() (kubernetes.Clientset, error) { + log.WithFields(log.Fields{ + "Caller": "generateClient", + }).Info(fmt.Sprintf("Generating k8s client")) + config, err := rest.InClusterConfig() + if err != nil { + return kubernetes.Clientset{}, errors.New(fmt.Sprintf("Could not generate in cluster config: %s", err.Error())) + } + clientset, err := kubernetes.NewForConfig(config) + if err != nil { + return kubernetes.Clientset{}, errors.New(fmt.Sprintf("Could not generate clientset: %s", err.Error())) + } + return *clientset, nil +} + +func LabelNode(nodeName string) error { + + client, err := generateClient() + if err != nil { + return errors.New(fmt.Sprintf("Could not generate client: %s", err.Error())) + } + + log.WithFields(log.Fields{ + "Caller": "LabelNode", + }).Info(fmt.Sprintf("Trying to label node %s", nodeName)) + + labelKey := "metallb-speaker" + labelValue := "true" + + node, err := client.CoreV1().Nodes().Get(context.TODO(), nodeName, metav1.GetOptions{}) + if err != nil { + return errors.New(fmt.Sprintf("Could not find Kubernetes node: %s", err.Error())) + } + + if node.Labels == nil { + node.Labels = make(map[string]string) + } + node.Labels[labelKey] = labelValue + + _, err = client.CoreV1().Nodes().Update(context.TODO(), node, metav1.UpdateOptions{}) + if err != nil { + return errors.New(fmt.Sprintf("Could not update node label: %s", err.Error())) + } + + log.WithFields(log.Fields{ + "Caller": "LabelNode", + }).Info(fmt.Sprintf("Node %s labeled with %s=%s\n", nodeName, labelKey, labelValue)) + + return nil + +} + +// TODO: handle node change +func RemoveLabelFromNode(nodeName string) error { + client, err := generateClient() + if err != nil { + return errors.New(fmt.Sprintf("Could not generate client: %s", err.Error())) + } + + log.WithFields(log.Fields{ + "Caller": "LabelNode", + }).Info(fmt.Sprintf("Removing Label from node %s", nodeName)) + + labelKey := "metallb-speaker" + + node, err := client.CoreV1().Nodes().Get(context.TODO(), nodeName, metav1.GetOptions{}) + if err != nil { + panic(err.Error()) + } + + delete(node.Labels, labelKey) + + _, err = client.CoreV1().Nodes().Update(context.TODO(), node, metav1.UpdateOptions{}) + if err != nil { + panic(err.Error()) + } + + fmt.Printf("Label %s removed from node %s\n", labelKey, nodeName) + + return nil +} diff --git a/internal/metrics.go b/internal/metrics.go index 6230637..ac3e2f0 100644 --- a/internal/metrics.go +++ b/internal/metrics.go @@ -45,7 +45,7 @@ func GetIpFromMetrics(metrics *dto.MetricFamily) (string, error) { for _, label := range metric.Label { if *label.Name == "ip" { log.WithFields(log.Fields{ - "Caller": "Main", + "Caller": "GetIpFromMetrics", }).Info(fmt.Sprintf("Found IP Label: %s", *label.Value)) return *label.Value, nil }