Question

我正在尝试将CHD3安装到3节点群集上。我通过Cloudera Manager启动安装。这三个安装都失败了。

在/var/log/cloudera-scm-agent/cloudera-scm-agent.out中Cloudera安装失败后，我看到了这个错误：

  File "/usr/lib64/cmf/agent/src/cmf/agent.py", line 19, in <module>
    import psutil
  File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/psutil-0.3.0-py2.6-linux-x86_64.egg/psutil/__init__.py", line 84, in <module>
    TOTAL_PHYMEM = _psplatform.phymem_usage()[0]
  File "/usr/lib64/cmf/agent/build/env/lib/python2.6/site-packages/psutil-0.3.0-py2.6-linux-x86_64.egg/psutil/_pslinux.py", line 122, in phymem_usage
    percent = usage_percent(total - (free + buffers + cached), total,
TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'

显然，在启动时运行的Python解释器将“free”，“buffers”或“cached”视为具有NoneType，并且此错误会导致整个安装回滚。

有人可以告知为什么会出现这种情况和/或解决问题吗？

提前致谢。

Answer 1

问题在于_pslinux.py中的phymem_usage（）：

def phymem_usage():
    # total, used and free values are matched against free cmdline utility
    # the percentage matches top/htop and gnome-system-monitor
    f = open('/proc/meminfo', 'r')
    try:
        total = free = buffers = cached = None
        for line in f:
            if line.startswith('MemTotal:'):
                total = int(line.split()[1]) * 1024
            elif line.startswith('MemFree:'):
                free = int(line.split()[1]) * 1024
            elif line.startswith('Buffers:'):
                buffers = int(line.split()[1]) * 1024
            elif line.startswith('Cached:'):
                cached = int(line.split()[1]) * 1024
                break
        used = total - free
        percent = usage_percent(total - (free + buffers + cached), total,
                                _round=1)
        return ntuple_sysmeminfo(total, used, free, percent)
    finally:
        f.close()

请注意，它正在检查/ proc / meminfo并将字段转换为整数，而不检查这些字段是否存在。在某些系统（包括某些虚拟化技术）上，可能会丢失缓冲区或缓存。（LSB规范声明大多数这些字段都是可选的。）

快速解决方法是将/ proc / meminfo更改为/ tmp / meminfo，“cat / proc / meminfo＆gt; / tmp / meminfo”，并添加如下行：

缓冲区：0 kB

Cloudera CDH3安装失败，如何绕过这个？

1 个答案: