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initial commit

Signed-off-by: Derek McQuay <derekmcquay@gmail.com>
master
Derek McQuay 5 years ago
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commit
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  1. 121
      main.go

121
main.go

@ -0,0 +1,121 @@
package main
import (
"bytes"
"encoding/json"
"fmt"
"log"
"os/exec"
"strings"
"sync"
)
type command struct {
node string
port int
url string
health string
}
type dcosJSON struct {
Name string `json:"name"`
Statuses []struct {
ContainerStatus struct {
ContainerID struct {
Value string `json:"value"`
} `json:"container_id"`
NetworkInfos []struct {
IPAddresses []struct {
IPAddress string `json:"ip_address"`
} `json:"ip_addresses"`
} `json:"network_infos"`
} `json:"container_status"`
State string `json:"state"`
Timestamp float64 `json:"timestamp"`
} `json:"statuses"`
}
type apiserverIPs struct {
name string
ip string
}
func getAPIServerIPs() []apiserverIPs {
cmd := exec.Command("dcos", "task", "--json")
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
log.Fatal(err)
}
d := []dcosJSON{}
if err := json.Unmarshal([]byte(out.String()), &d); err != nil {
panic(err)
}
ips := []apiserverIPs{}
for _, i := range d {
if strings.Contains(i.Name, "apiserver") {
ips = append(
ips,
apiserverIPs{
name: i.Name,
ip: i.Statuses[0].ContainerStatus.NetworkInfos[0].IPAddresses[0].IPAddress,
},
)
}
}
return ips
}
func addAPIServer(n string, ips []apiserverIPs) string {
for _, i := range ips {
if strings.Contains(i.name, n) {
return i.ip
}
}
return ""
}
func main() {
var wg sync.WaitGroup
ips := getAPIServerIPs()
hosts := []command{
command{node: "kube-controller-manager-0-node", port: 10252, url: "localhost", health: "healthz"},
command{node: "kube-controller-manager-1-node", port: 10252, url: "localhost", health: "healthz"},
command{node: "kube-controller-manager-2-node", port: 10252, url: "localhost", health: "healthz"},
command{node: "kube-scheduler-0-node", port: 10252, url: "localhost", health: "healthz"},
command{node: "kube-scheduler-1-node", port: 10251, url: "localhost", health: "healthz"},
command{node: "kube-scheduler-2-node", port: 10251, url: "localhost", health: "healthz"},
command{node: "kube-apiserver-0-node", port: 9000, url: addAPIServer("0", ips), health: "healthz"},
command{node: "kube-apiserver-1-node", port: 9000, url: addAPIServer("1", ips), health: "healthz"},
command{node: "kube-apiserver-2-node", port: 9000, url: addAPIServer("2", ips), health: "healthz"},
command{node: "etcd-0-node", port: 2379, url: "localhost", health: "health"},
command{node: "etcd-1-node", port: 2379, url: "localhost", health: "health"},
command{node: "etcd-2-node", port: 2379, url: "localhost", health: "health"},
}
for _, n := range hosts {
wg.Add(1)
go func(c command) {
defer wg.Done()
cmd := exec.Command(
"dcos",
"task",
"exec",
c.node,
"/usr/bin/curl",
"-sSf",
fmt.Sprintf("%s:%d/%s", c.url, c.port, c.health),
)
var out bytes.Buffer
cmd.Stdout = &out
err := cmd.Run()
if err != nil {
log.Fatal(err)
}
fmt.Printf("%v: %q\n", c, out.String())
}(n)
}
wg.Wait()
}
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