// StartedUp waits for everybody to start by contacting the
// monitor. Argument is total number of peers.
func (f Flags) StartedUp(total int) {
monitor.Ready(f.Logger)
// Wait for everybody to be ready before going on
for {
s, err := monitor.GetReady(f.Logger)
if err != nil {
dbg.Lvl1("Couldn't reach monitor")
} else {
if s.Ready != total {
dbg.Lvl4(f.Hostname, "waiting for others to finish", s.Ready, total)
} else {
break
}
time.Sleep(time.Second)
}
}
dbg.Lvl3(f.Hostname, "thinks everybody's here")
}
func main() {
deterlab.ReadConfig()
flag.Parse()
vpmap := make(map[string]string)
for i := range deterlab.Virt {
vpmap[deterlab.Virt[i]] = deterlab.Phys[i]
}
// kill old processes
var wg sync.WaitGroup
re := regexp.MustCompile(" +")
hosts, err := exec.Command("/usr/testbed/bin/node_list", "-e", deterlab.Project+","+deterlab.Experiment).Output()
if err != nil {
dbg.Fatal("Deterlab experiment", deterlab.Project+"/"+deterlab.Experiment, "seems not to be swapped in. Aborting.")
os.Exit(-1)
}
hosts_trimmed := strings.TrimSpace(re.ReplaceAllString(string(hosts), " "))
hostlist := strings.Split(hosts_trimmed, " ")
doneHosts := make([]bool, len(hostlist))
dbg.Lvl2("Found the following hosts:", hostlist)
if kill {
dbg.Lvl1("Cleaning up", len(hostlist), "hosts.")
}
for i, h := range hostlist {
wg.Add(1)
go func(i int, h string) {
defer wg.Done()
if kill {
dbg.Lvl4("Cleaning up host", h, ".")
cliutils.SshRun("", h, "sudo killall -9 "+deterlab.App+" logserver forkexec timeclient scp 2>/dev/null >/dev/null")
time.Sleep(1 * time.Second)
cliutils.SshRun("", h, "sudo killall -9 "+deterlab.App+" 2>/dev/null >/dev/null")
time.Sleep(1 * time.Second)
// Also kill all other process that start with "./" and are probably
// locally started processes
cliutils.SshRun("", h, "sudo pkill -9 -f '\\./'")
time.Sleep(1 * time.Second)
if dbg.DebugVisible > 3 {
dbg.Lvl4("Cleaning report:")
cliutils.SshRunStdout("", h, "ps aux")
}
} else {
dbg.Lvl3("Setting the file-limit higher on", h)
// Copy configuration file to make higher file-limits
err := cliutils.SshRunStdout("", h, "sudo cp remote/cothority.conf /etc/security/limits.d")
if err != nil {
dbg.Fatal("Couldn't copy limit-file:", err)
}
}
doneHosts[i] = true
dbg.Lvl3("Host", h, "cleaned up")
}(i, h)
}
cleanupChannel := make(chan string)
go func() {
wg.Wait()
dbg.Lvl3("Done waiting")
cleanupChannel <- "done"
}()
select {
case msg := <-cleanupChannel:
dbg.Lvl3("Received msg from cleanupChannel", msg)
case <-time.After(time.Second * 20):
for i, m := range doneHosts {
if !m {
dbg.Lvl1("Missing host:", hostlist[i], "- You should run")
dbg.Lvl1("/usr/testbed/bin/node_reboot", hostlist[i])
}
}
dbg.Fatal("Didn't receive all replies while cleaning up - aborting.")
}
if kill {
dbg.Lvl2("Only cleaning up - returning")
return
}
// ADDITIONS : the monitoring part
// Proxy will listen on Sink:SinkPort and redirect every packet to
// RedirectionAddress:RedirectionPort. With remote tunnel forwarding it will
// be forwarded to the real sink
dbg.Lvl2("Launching proxy redirecting to", deterlab.ProxyRedirectionAddress, ":", deterlab.ProxyRedirectionPort)
go monitor.Proxy(deterlab.ProxyRedirectionAddress + ":" + deterlab.ProxyRedirectionPort)
time.Sleep(time.Second)
hostnames := deterlab.Hostnames
dbg.Lvl4("hostnames:", hostnames)
// mapping from physical node name to the timestamp servers that are running there
// essentially a reverse mapping of vpmap except ports are also used
physToServer := make(map[string][]string)
for _, virt := range hostnames {
v, _, _ := net.SplitHostPort(virt)
p := vpmap[v]
ss := physToServer[p]
ss = append(ss, virt)
physToServer[p] = ss
}
monitorAddr := deterlab.MonitorAddress + ":" + monitor.SinkPort
servers := len(physToServer)
ppm := len(deterlab.Hostnames) / servers
dbg.Lvl1("starting", servers, "forkexecs with", ppm, "processes each =", servers*ppm)
totalServers := 0
for phys, virts := range physToServer {
if len(virts) == 0 {
continue
}
totalServers += len(virts)
dbg.Lvl2("Launching forkexec for", len(virts), "clients on", phys)
wg.Add(1)
go func(phys string) {
//dbg.Lvl4("running on", phys, cmd)
defer wg.Done()
dbg.Lvl4("Starting servers on physical machine", phys, "with logger =", deterlab.MonitorAddress+":"+monitor.SinkPort)
err := cliutils.SshRunStdout("", phys, "cd remote; sudo ./forkexec"+
" -physaddr="+phys+" -logger="+deterlab.MonitorAddress+":"+monitor.SinkPort)
if err != nil {
dbg.Lvl1("Error starting timestamper:", err, phys)
}
dbg.Lvl4("Finished with Timestamper", phys)
}(phys)
}
if deterlab.App == "stamp" || deterlab.App == "sign" {
// Every stampserver that started up (mostly waiting for configuration-reading)
// writes its name in coll_stamp_dir - once everybody is there, the directory
// is cleaned to flag it's OK to go on.
start_config := time.Now()
for {
s, err := monitor.GetReady(monitorAddr)
if err != nil {
log.Fatal("Couldn't contact monitor")
} else {
dbg.Lvl1("Processes started:", s.Ready, "/", totalServers, "after", time.Since(start_config))
if s.Ready == totalServers {
dbg.Lvl2("Everybody ready, starting")
// 1st second for everybody to see the deleted directory
// 2nd second for everybody to start up listening
time.Sleep(time.Second * 2)
break
}
}
time.Sleep(time.Second)
}
}
switch deterlab.App {
case "stamp":
dbg.Lvl1("starting", len(physToServer), "time clients")
// start up one timeclient per physical machine
// it requests timestamps from all the servers on that machine
amroot := true
for p, ss := range physToServer {
if len(ss) == 0 {
dbg.Lvl3("ss is empty - not starting")
continue
}
servers := strings.Join(ss, ",")
dbg.Lvl3("Starting with ss=", ss)
go func(p string, a bool) {
cmdstr := "cd remote; sudo ./" + deterlab.App + " -mode=client " +
" -name=client@" + p +
" -server=" + servers +
" -amroot=" + strconv.FormatBool(a)
dbg.Lvl3("Users will launch client:", cmdstr)
err := cliutils.SshRunStdout("", p, cmdstr)
if err != nil {
dbg.Lvl4("Deter.go: error for", deterlab.App, err)
}
dbg.Lvl4("Deter.go: Finished with", deterlab.App, p)
}(p, amroot)
amroot = false
}
case "sign_no":
// TODO: for now it's only a simple startup from the server
dbg.Lvl1("Starting only one client")
}
// wait for the servers to finish before stopping
wg.Wait()
}