142 lines
4.1 KiB
Go
142 lines
4.1 KiB
Go
/*
|
|
Copyright © 2019 Vineeth Pothulapati <vineethpothulapati@outlook.com>
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"github.com/spf13/cobra"
|
|
"io"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/client-go/kubernetes"
|
|
"log"
|
|
"os"
|
|
)
|
|
|
|
// logsCmd represents the logs command
|
|
var logsCmd = &cobra.Command{
|
|
Use: "logs",
|
|
Short: "This will fetch the logs of the specified postgres cluster & postgres operator",
|
|
Long: `Fetches the logs of the postgres cluster (i.e master( with -m flag) & replica with (-r 1 pod number) and without -m or -r connects to random replica`,
|
|
Run: func(cmd *cobra.Command, args []string) {
|
|
opLogs, _ := cmd.Flags().GetBool("operator")
|
|
clusterName, _ := cmd.Flags().GetString("cluster")
|
|
master, _ := cmd.Flags().GetBool("master")
|
|
replica, _ := cmd.Flags().GetString("replica")
|
|
|
|
if opLogs {
|
|
operatorLogs()
|
|
} else {
|
|
clusterLogs(clusterName, master, replica)
|
|
}
|
|
},
|
|
Example: `
|
|
#Fetch the logs of the postgres operator
|
|
kubectl pg logs -o
|
|
|
|
#Fetch the logs of the master for provided cluster
|
|
kubectl pg logs -c cluster01 -m
|
|
|
|
#Fetch the logs of the random replica for provided cluster
|
|
kubectl pg logs -c cluster01
|
|
|
|
#Fetch the logs of the provided replica number of the cluster
|
|
kubectl pg logs -c cluster01 -r 3
|
|
`,
|
|
}
|
|
|
|
func operatorLogs() {
|
|
config := getConfig()
|
|
client, err := kubernetes.NewForConfig(config)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
operator := getPostgresOperator(client)
|
|
allPods, err := client.CoreV1().Pods(operator.Namespace).List(metav1.ListOptions{})
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
var operatorPodName string
|
|
for _, pod := range allPods.Items {
|
|
for key, value := range pod.Labels {
|
|
if (key == "name" && value == OperatorName) || (key == "app.kubernetes.io/name" && value == OperatorName) {
|
|
operatorPodName = pod.Name
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
execRequest := client.CoreV1().RESTClient().Get().Namespace(operator.Namespace).
|
|
Name(operatorPodName).
|
|
Resource("pods").
|
|
SubResource("log").
|
|
Param("follow", "--follow").
|
|
Param("container", OperatorName)
|
|
|
|
readCloser, err := execRequest.Stream()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
defer readCloser.Close()
|
|
_, err = io.Copy(os.Stdout, readCloser)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func clusterLogs(clusterName string, master bool, replica string) {
|
|
config := getConfig()
|
|
client, err := kubernetes.NewForConfig(config)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
podName := getPodName(clusterName, master, replica)
|
|
execRequest := client.CoreV1().RESTClient().Get().Namespace(getCurrentNamespace()).
|
|
Name(podName).
|
|
Resource("pods").
|
|
SubResource("log").
|
|
Param("follow", "--follow").
|
|
Param("container", "postgres")
|
|
|
|
readCloser, err := execRequest.Stream()
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
defer readCloser.Close()
|
|
_, err = io.Copy(os.Stdout, readCloser)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func init() {
|
|
rootCmd.AddCommand(logsCmd)
|
|
logsCmd.Flags().BoolP("operator", "o", false, "logs of operator")
|
|
logsCmd.Flags().StringP("cluster", "c", "", "logs for the provided cluster")
|
|
logsCmd.Flags().BoolP("master", "m", false, "Patroni logs of master")
|
|
logsCmd.Flags().StringP("replica", "r", "", "Patroni logs of replica. Specify replica number.")
|
|
}
|