mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-04 07:49:35 +00:00
100 lines
2.7 KiB
Go
100 lines
2.7 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package e2e
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import (
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"fmt"
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"io/ioutil"
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"net"
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"strings"
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"sync"
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)
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type command struct {
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cmd string
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component string
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}
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func CoreDump(dir string) {
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c, err := loadClient()
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if err != nil {
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fmt.Printf("Error creating client: %v", err)
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return
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}
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provider := testContext.Provider
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// requires ssh
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if !providerIs(providersWithSSH...) {
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fmt.Printf("Skipping SSH core dump, which is not implemented for %s", provider)
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return
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}
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// Get all nodes' external IPs.
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hosts, err := NodeSSHHosts(c)
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if err != nil {
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fmt.Printf("Error getting node hostnames: %v", err)
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return
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}
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cmds := []command{
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{"cat /var/log/kubelet.log", "kubelet"},
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{"cat /var/log/kube-proxy.log", "kube-proxy"},
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{"cat /var/log/supervisor/supervisord.log", "supervisord"},
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}
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logCore(cmds, hosts, dir, provider)
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// I wish there was a better way to get the master IP...
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config, err := loadConfig()
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if err != nil {
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fmt.Printf("Error loading config: %v", err)
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}
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ix := strings.LastIndex(config.Host, "/")
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master := net.JoinHostPort(config.Host[ix+1:], "22")
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cmds = []command{
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{"cat /var/log/kubelet.log", "kubelet"},
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{"cat /var/log/kube-apiserver.log", "kube-apiserver"},
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{"cat /var/log/kube-scheduler.log", "kube-scheduler"},
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{"cat /var/log/kube-controller-manager.log", "kube-controller-manager"},
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{"cat /var/log/supervisor/supervisord.log", "supervisord"},
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}
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logCore(cmds, []string{master}, dir, provider)
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}
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func logCore(cmds []command, hosts []string, dir, provider string) {
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wg := &sync.WaitGroup{}
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// Run commands on all nodes via SSH.
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for _, cmd := range cmds {
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fmt.Printf("SSH'ing to all nodes and running %s\n", cmd.cmd)
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for _, host := range hosts {
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wg.Add(1)
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go func(cmd command, host string) {
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defer wg.Done()
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logfile := fmt.Sprintf("%s/%s-%s.log", dir, host, cmd.component)
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fmt.Printf("Writing to %s.\n", logfile)
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stdout, stderr, _, err := SSH(cmd.cmd, host, provider)
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if err != nil {
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fmt.Printf("Error running command: %v\n", err)
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}
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if err := ioutil.WriteFile(logfile, []byte(stdout+stderr), 0777); err != nil {
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fmt.Printf("Error writing logfile: %v\n", err)
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}
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}(cmd, host)
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}
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}
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wg.Wait()
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}
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