// iam injects info into the environment about a host's self.
//
// Sets the following environment variables. (Values represent the data format.
// Instances will get its own values.)
//
// MY_NODEIP=10.245.1.3
// MY_SERVICE_IP=10.22.1.4
// MY_PORT_PEER=2380
// MY_PORT_CLIENT=2379
// MY_NAMESPACE=default
// MY_SELFLINK=/api/v1/namespaces/default/pods/deis-etcd-1-336jp
// MY_UID=62a3b54a-6956-11e5-b8ab-0800279dd272
// MY_APISERVER=https://10.247.0.1:443
// MY_NAME=deis-etcd-1-336jp
// MY_IP=10.246.44.7
// MY_LABEL_NAME=deis-etcd-1 # One entry per label in the JSON
// MY_ANNOTATION_NAME=deis-etcd-1 # One entry per annitation in the JSON
// MY_PORT_CLIENT=4100
// MY_PORT_PEER=2380
func iam(c cookoo.Context, p *cookoo.Params) (interface{}, cookoo.Interrupt) {
me, err := aboutme.FromEnv()
if err != nil {
log.Errf(c, "Failed aboutme.FromEnv: %s", err)
} else {
if strings.TrimSpace(me.IP) == "" {
log.Warn(c, "No IP found by API query.")
ip, err := aboutme.MyIP()
if err != nil || ip == "" {
// Force pod death.
log.Errf(c, "Failed to get an IP address: %s", err)
os.Exit(5)
}
}
me.ShuntEnv()
os.Setenv("ETCD_NAME", me.Name)
c.Put("ETCD_NAME", me.Name)
}
passEnv("MY_PORT_CLIENT", "$DEIS_ETCD_1_SERVICE_PORT_CLIENT")
passEnv("MY_PORT_PEER", "$DEIS_ETCD_1_SERVICE_PORT_PEER")
return nil, nil
}
func main() {
log.Printf("Starting etcd-discovery boot version %s", version)
ip, err := aboutme.MyIP()
if err != nil {
log.Printf("Failed to start because could not get IP: %s", err)
os.Exit(321)
}
port := os.Getenv("DEIS_ETCD_CLIENT_PORT")
if port == "" {
port = "2381"
}
aurl := fmt.Sprintf("http://%s:%s", ip, port)
curl := fmt.Sprintf("http://%s:%s,http://localhost:%s", ip, port, port)
cmd := exec.Command("etcd", "-advertise-client-urls", aurl, "-listen-client-urls", curl)
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
go func() {
err := cmd.Start()
if err != nil {
log.Printf("Failed to start etcd: %s", err)
os.Exit(2)
}
}()
// Give etcd time to start up.
log.Print("Etcd needs to start. Sleeping for 5 seconds...")
time.Sleep(5 * time.Second)
log.Print("Woke up.")
uuid, err := discovery.Token()
if err != nil {
log.Printf("Failed to read %s", discovery.TokenFile)
os.Exit(404)
}
size := os.Getenv("DEIS_ETCD_CLUSTER_SIZE")
if size == "" {
size = "3"
}
key := fmt.Sprintf(discovery.ClusterSizeKey, uuid)
cli := etcd.NewClient([]string{"http://localhost:2381"})
if _, err := cli.Create(key, size, 0); err != nil {
log.Printf("Failed to add key: %s", err)
}
log.Printf("etcd-discovery service secret is %s.", key)
log.Printf("etcd-discovery service is running on %s:%s.", ip, port)
if err := cmd.Wait(); err != nil {
log.Printf("Etcd stopped running: %s", err)
}
}
// iam injects info into the environment about a host's self.
//
// Sets the following environment variables. (Values represent the data format.
// Instances will get its own values.)
//
// MY_NODEIP=10.245.1.3
// MY_SERVICE_IP=10.22.1.4
// MY_PORT_PEER=2380
// MY_PORT_CLIENT=2379
// MY_NAMESPACE=default
// MY_SELFLINK=/api/v1/namespaces/default/pods/deis-etcd-1-336jp
// MY_UID=62a3b54a-6956-11e5-b8ab-0800279dd272
// MY_APISERVER=https://10.247.0.1:443
// MY_NAME=deis-etcd-1-336jp
// MY_IP=10.246.44.7
// MY_LABEL_NAME=deis-etcd-1 # One entry per label in the JSON
// MY_ANNOTATION_NAME=deis-etcd-1 # One entry per annitation in the JSON
// MY_PORT_CLIENT=4100
// MY_PORT_PEER=2380
func iam(c cookoo.Context, p *cookoo.Params) (interface{}, cookoo.Interrupt) {
me, err := aboutme.FromEnv()
if err != nil {
log.Errf(c, "Failed aboutme.FromEnv: %s", err)
log.Warn(c, "Attempting to recover.")
}
// This will try to recover whenever IP is not set. Only some fields
// can be recovered. But all we really need is IP and Name.
if strings.TrimSpace(me.IP) == "" {
log.Warn(c, "No IP found by API query.")
ip, err := aboutme.MyIP()
if err != nil || ip == "" {
// Force pod death.
log.Errf(c, "Failed to get an IP address: %s", err)
os.Exit(5)
}
me.IP = ip
}
if strings.TrimSpace(me.Name) == "" {
// Try to set name from DAPI.
me.Name = os.Getenv("POD_NAME")
log.Warnf(c, "Setting name to %q", me.Name)
}
if strings.TrimSpace(me.Namespace) == "" {
// Try to set namespace from DAPI.
me.Namespace = os.Getenv("POD_NAMESPACE")
log.Warnf(c, "Setting name to %q", me.Namespace)
}
me.ShuntEnv()
os.Setenv("ETCD_NAME", me.Name)
c.Put("ETCD_NAME", me.Name)
passEnv("MY_PORT_CLIENT", "$DEIS_ETCD_1_SERVICE_PORT_CLIENT")
passEnv("MY_PORT_PEER", "$DEIS_ETCD_1_SERVICE_PORT_PEER")
return nil, nil
}
