我在云中有一个运行 Red Hat Enterprise Linux v5.6 的服务器。我的项目限制不允许我使用其他操作系统。
当我创建云服务器时，我能够通过 SSH 进入它并访问 shell。我接下来运行了以下命令：
sudo yum update
但命令失败了。大约一个月前，我创建了另一台具有相同机器映像的服务器，并没有出现该错误。为什么现在失败了？以下是终端输出
sudo yum update
Loaded plugins: security
Repository rhel-server is listed more than once in the configuration
Traceback (most recent call last):
File "/usr/bin/yum", line 29, in ?
yummain.user_main(sys.argv[1:], exit_code=True)
File "/usr/share/yum-cli/yummain.py", line 309, in user_main
errcode = main(args)
File "/usr/share/yum-cli/yummain.py", line 178, in main
result, resultmsgs = base.doCommands()
File "/usr/share/yum-cli/cli.py", line 345, in doCommands
self._getTs(needTsRemove)
File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 101, in _getTs
self._getTsInfo(remove_only)
File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 112, in _getTsInfo
pkgSack = self.pkgSack
File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 662, in <lambda>
pkgSack = property(fget=lambda self: self._getSacks(),
File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 502, in _getSacks
self.repos.populateSack(which=repos)
File "/usr/lib/python2.4/site-packages/yum/repos.py", line 260, in populateSack
sack.populate(repo, mdtype, callback, cacheonly)
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 168, in populate
if self._check_db_version(repo, mydbtype):
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 226, in _check_db_version
return repo._check_db_version(mdtype)
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1233, in _check_db_version
repoXML = self.repoXML
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1406, in <lambda>
repoXML = property(fget=lambda self: self._getRepoXML(),
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1398, in _getRepoXML
self._loadRepoXML(text=self)
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1388, in _loadRepoXML
return self._groupLoadRepoXML(text, ["primary"])
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1372, in _groupLoadRepoXML
if self._commonLoadRepoXML(text):
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1208, in _commonLoadRepoXML
result = self._getFileRepoXML(local, text)
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 989, in _getFileRepoXML
cache=self.http_caching == 'all')
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 826, in _getFile
http_headers=headers,
File "/usr/lib/python2.4/site-packages/urlgrabber/mirror.py", line 412, in urlgrab
return self._mirror_try(func, url, kw)
File "/usr/lib/python2.4/site-packages/urlgrabber/mirror.py", line 398, in _mirror_try
return func_ref( *(fullurl,), **kwargs )
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 936, in urlgrab
return self._retry(opts, retryfunc, url, filename)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 854, in _retry
r = apply(func, (opts,) + args, {})
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 922, in retryfunc
fo = URLGrabberFileObject(url, filename, opts)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1010, in __init__
self._do_open()
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1093, in _do_open
fo, hdr = self._make_request(req, opener)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1202, in _make_request
fo = opener.open(req)
File "/usr/lib64/python2.4/urllib2.py", line 358, in open
response = self._open(req, data)
File "/usr/lib64/python2.4/urllib2.py", line 376, in _open
'_open', req)
File "/usr/lib64/python2.4/urllib2.py", line 337, in _call_chain
result = func(*args)
File "/usr/lib64/python2.4/site-packages/M2Crypto/m2urllib2.py", line 82, in https_open
h.request(req.get_method(), req.get_selector(), req.data, headers)
File "/usr/lib64/python2.4/httplib.py", line 810, in request
self._send_request(method, url, body, headers)
File "/usr/lib64/python2.4/httplib.py", line 833, in _send_request
self.endheaders()
File "/usr/lib64/python2.4/httplib.py", line 804, in endheaders
self._send_output()
File "/usr/lib64/python2.4/httplib.py", line 685, in _send_output
self.send(msg)
File "/usr/lib64/python2.4/httplib.py", line 652, in send
self.connect()
File "/usr/lib64/python2.4/site-packages/M2Crypto/httpslib.py", line 47, in connect
self.sock.connect((self.host, self.port))
File "/usr/lib64/python2.4/site-packages/M2Crypto/SSL/Connection.py", line 174, in connect
ret = self.connect_ssl()
File "/usr/lib64/python2.4/site-packages/M2Crypto/SSL/Connection.py", line 167, in connect_ssl
return m2.ssl_connect(self.ssl, self._timeout)
M2Crypto.SSL.SSLError: certificate verify failed
答案1
您应该阅读该消息。它说Repository rhel-server is listed more than once in the configuration。因此，删除重复的条目，然后继续。
删除具有失败 SSL 证书（不受信任或受损来源）的证书。
答案2
“配置中多次列出存储库”错误消息有时可能是由于 yum 所依赖的 yum-rhn-plugin 软件包中的错误引起的。我曾经遇到过同样的问题，通过将 yum-rhn-plugin 降级到以前的版本，我能够解决这个问题。
rpm -Uvh --oldpackage yum-rhn-plugin-0.5.2-3.el5.noarch.rpm