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Prometheus tls path #3615

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Merged
merged 8 commits into from
Mar 8, 2023
Merged

Prometheus tls path #3615

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b3baf9f
Update path to store prometheus secrets
shaun-nx Mar 2, 2023
2c44c8c
Move DefaultSecretPath const to configurator and add nosec G101
shaun-nx Mar 2, 2023
24b68b8
Merge branch 'main' into prometheusTLSPath
shaun-nx Mar 2, 2023
9787985
Merge branch 'main' into prometheusTLSPath
shaun-nx Mar 7, 2023
0a937c3
Fix lint error
shaun-nx Mar 7, 2023
814b608
Update error check
shaun-nx Mar 7, 2023
6c067de
Update error message
shaun-nx Mar 8, 2023
0868508
Change function name
shaun-nx Mar 8, 2023
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3 changes: 3 additions & 0 deletions internal/configs/configurator.go
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,9 @@ const (
// DefaultServerSecretPath is the full path to the Secret with a TLS cert and a key for the default server. #nosec G101
const DefaultServerSecretPath = "/etc/nginx/secrets/default"

// DefaultSecretPath is the full default path to where secrets are stored and accessed.
const DefaultSecretPath = "/etc/nginx/secrets" // #nosec G101

// DefaultServerSecretName is the filename of the Secret with a TLS cert and a key for the default server.
const DefaultServerSecretName = "default"

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14 changes: 10 additions & 4 deletions internal/metrics/listener.go
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Expand Up @@ -7,6 +7,7 @@ import (
"strconv"

"github.com/golang/glog"
config "github.com/nginxinc/kubernetes-ingress/internal/configs"
"github.com/nginxinc/kubernetes-ingress/internal/nginx"
prometheusClient "github.com/nginxinc/nginx-prometheus-exporter/client"
nginxCollector "github.com/nginxinc/nginx-prometheus-exporter/collector"
Expand Down Expand Up @@ -59,12 +60,12 @@ func runServer(port string, registry prometheus.Gatherer, prometheusSecret *api_
// Write the cert and key to a temporary file. We create a unique file name to prevent collisions.
certFileName := "nginx-prometheus.cert"
keyFileName := "nginx-prometheus.key"
certFile, err := writeTempFile(prometheusSecret.Data[api_v1.TLSCertKey], certFileName)
certFile, err := createTLSFile(prometheusSecret.Data[api_v1.TLSCertKey], certFileName)
if err != nil {
glog.Fatal("failed to create cert file for prometheus: %w", err)
}

keyFile, err := writeTempFile(prometheusSecret.Data[api_v1.TLSPrivateKeyKey], keyFileName)
keyFile, err := createTLSFile(prometheusSecret.Data[api_v1.TLSPrivateKeyKey], keyFileName)
if err != nil {
glog.Fatal("failed to create key file for prometheus: %w", err)
}
Expand All @@ -73,8 +74,13 @@ func runServer(port string, registry prometheus.Gatherer, prometheusSecret *api_
}
}

func writeTempFile(data []byte, name string) (*os.File, error) {
f, err := os.CreateTemp("", name)
func createTLSFile(data []byte, name string) (*os.File, error) {
_, err := os.Stat(config.DefaultSecretPath)
if err != nil {
return nil, fmt.Errorf("got error %w when attempting access %s", err, config.DefaultSecretPath)
}

f, err := os.CreateTemp(config.DefaultSecretPath, name)
if err != nil {
return nil, fmt.Errorf("failed to create temp file: %w", err)
}
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