public static String getManagementServerIp() {
if (managementServerIp != null) {
return managementServerIp;
}
String ip = System.getProperty("management.server.ip");
if (ip != null) {
logger.info(String.format("get management IP[%s] from Java property[management.server.ip]", ip));
return ip;
}
ip = System.getenv("ZSTACK_MANAGEMENT_SERVER_IP");
if (ip != null) {
logger.info(String.format("get management IP[%s] from environment variable[ZSTACK_MANAGEMENT_SERVER_IP]", ip));
return ip;
}
Linux.ShellResult ret = Linux.shell("/sbin/ip route");
String defaultLine = null;
for (String s : ret.getStdout().split("\n")) {
if (s.contains("default via")) {
defaultLine = s;
break;
}
}
String err = "cannot get management server ip of this machine. there are three ways to get the ip.\n1) search for 'management.server.ip' java property\n2) search for 'ZSTACK_MANAGEMENT_SERVER_IP' environment variable\n3) search for default route printed out by '/sbin/ip route'\nhowever, all above methods failed";
if (defaultLine == null) {
throw new CloudRuntimeException(err);
}
try {
Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
for (NetworkInterface iface : Collections.list(nets)) {
String name = iface.getName();
if (defaultLine.contains(name)) {
InetAddress ia = iface.getInetAddresses().nextElement();
ip = ia.getHostAddress();
break;
}
}
} catch (SocketException e) {
throw new CloudRuntimeException(e);
}
if (ip == null) {
throw new CloudRuntimeException(err);
}
logger.info(String.format("get management IP[%s] from default route[/sbin/ip route]", ip));
managementServerIp = ip;
return managementServerIp;
}
private static void writePidFile() throws IOException {
if (CoreGlobalProperty.UNIT_TEST_ON) {
return;
}
File pidFile = new File(CoreGlobalProperty.PID_FILE_PATH);
if (pidFile.exists()) {
String pidStr = FileUtils.readFileToString(pidFile);
try {
long pid = Long.valueOf(pidStr);
String processProcDir = String.format("/proc/%s", pid);
File processProcDirFile = new File(processProcDir);
if (processProcDirFile.exists()) {
throw new CloudRuntimeException(String.format("pid file[%s] exists and the process[pid:%s] that the pid file points to is still running", CoreGlobalProperty.PID_FILE_PATH, pidStr));
}
} catch (NumberFormatException e) {
logger.warn(String.format("pid file[%s] includes an invalid pid[%s] that is not a long number, ignore it",
CoreGlobalProperty.PID_FILE_PATH, pidStr));
}
logger.info(String.format("stale pid file[%s], ignore it", CoreGlobalProperty.PID_FILE_PATH));
}
pidFile.deleteOnExit();
String pid = ManagementFactory.getRuntimeMXBean().getName().split("@")[0];
FileUtils.writeStringToFile(pidFile, pid);
}