总是遇到"Ambari Server not running, Stale PID File at: /var/run/ambari-server/ambari-server.pid"

Question

我是一个用ambari从apache学习Hadoop的新手，我一直在尝试在我的Ubuntu VirtualBox环境中安装ambari，然而，我遇到这个问题已经筋疲力尽了。

首先，系统提示"Ambari Server 'start' completed successfully"，如下所示

~# ambari-server start
Using python  /usr/bin/python2.7
Starting ambari-server
Ambari Server running with administrator privileges.
Organizing resource files at /var/lib/ambari-server/resources...
Server PID at: /var/run/ambari-server/ambari-server.pid
Server out at: /var/log/ambari-server/ambari-server.out
Server log at: /var/log/ambari-server/ambari-server.log
Waiting for server start...................
Ambari Server 'start' completed successfully.

但是，我无法通过"http://127.0.0.1:8080"访问ambari服务，当我检查服务器状态时，如下所示

~# ambari-server status
Using python  /usr/bin/python2.7
Ambari-server status
Ambari Server not running. Stale PID File at: /var/run/ambari-server/ambari-server.pid

当我检查/var/run/ambari-server/ambari-server.pid文件

~# cat /var/run/ambari-server/ambari-server.pid 
2875

当我签入日志文件时，它以以下行开头

22 May 2015 10:59:42,876  INFO [main] Configuration:527 - Reading password from existing file
22 May 2015 10:59:43,073  INFO [main] Configuration:747 - Hosts Mapping File null
22 May 2015 10:59:43,074  INFO [main] HostsMap:60 - Using hostsmap file null
22 May 2015 10:59:45,169  INFO [main] ControllerModule:172 - Detected MYSQL as the database type from the JDBC URL
22 May 2015 10:59:45,253  INFO [main] ControllerModule:214 - Using c3p0 ComboPooledDataSource as the EclipsLink DataSource
22 May 2015 10:59:45,416  INFO [main] MLog:80 - MLog clients using log4j logging.
22 May 2015 10:59:46,124  INFO [main] C3P0Registry:204 - Initializing c3p0-0.9.1.1 [built 15-March-2007 01:32:31; debug? true; trace: 10]
22 May 2015 10:59:59,830 ERROR [main] DBAccessorImpl:99 - Error while creating database accessor 
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.

我上网搜索了一下，没有找到解决这个问题的方法。

顺便说一下，我还没有安装Hadoop，这是不是问题?

Answer 1

终于成功了

我没有在后台运行命令，而是使用了nohup。它工作。在远程机器上执行的脚本内容如下:

#!/bin/bash
nohup ambari-server start

Answer 2

我希望这是有关https://issues.apache.org/jira/browse/AMBARI-9215

当我登录到服务器然后启动Ambari，它工作。但是当我开始使用织物时，它不工作。

Answer 3

作为解决方案，我正在尝试将脚本推送到目标主机并在后台执行命令。

/root/scripts/start_ambari .sh目录的内容如下:

<标题> !/bin/bash h1>

Answer 4

这个问题可能是任何情况。让我指出其中的一些作品，请告诉我们。

1. 以root身份运行ambari-server

2. 检查/etc/hosts文件

3. 检查您的8080端口是否已打开。