subscription-manager および yum 問題のトラブルシューティング

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 7.x
  • Red Hat Enterprise Linux 6.x
  • Red Hat Enterprise Linux 5.8 以降
  • Red Hat Subscription Manager (RHSM)

Issue

  • このページでは、subscription-manager および yum 問題に関する基本的なトラブルシューティングについて説明しています。このトラブルシューティングを行うと、一般的なエラーの多くが解決します。
  • たとえば、以下のエラーのトラブルシューティングを行います。
    # yum check-update
    Loaded plugins: downloadonly, product-id, subscription-manager
    Updating certificate-based repositories.
    https://cdn.redhat.com/content/dist/rhel/server/6/6Server/x86_64/cf-tools/1.0/os/repodata/repomd.xml:[Errno 14] problem making ssl connection
    Trying other mirror.
    Error:Cannot retrieve repository metadata (repomd.xml) for repository: rhel-6-server-cf-tools-1-rpms.Please verify its path and try again
    

Resolution

  • プロキシ (またはサーバーと Red Hat との間にあるもの) が SSL 証明書を変更していないことを確認します。SSL 通信を使用しないようにプロキシを設定されている場合があります。これは、中間者攻撃に似ています。
  • システムの UUID がカスタマーポータルのものと一致していることを確認します。
    1. システムから UUID を取得します。
      # openssl x509 -in /etc/pki/consumer/cert.pem -noout -text| grep 'Subject:CN'
      
      • カスタマーポータル上でシステムの UUID を確認します。access.redhat.com から [Subscriptions] に移動し、(小見出し [Subscriber Inventory] の下にある) [Systems] に移動して、 https://access.redhat.com/management/consumers?type=system を開きます。次に、フィルターボックスでシステムの UUID を入力し、一致するかどうかを確認します。
    2. UUID が一致しない場合は、システムからサブスクリプションデータを更新します。
      # subscription-manager refresh
      # subscription-manager attach --auto
      
      または
      # subscription-manager attach --pool=POOLID
      
  • RHSM で http プロキシを使用する場合は、/etc/yum.conf ではなく /etc/rhsm/rhsm.conf にプロキシ設定を行います。
RHSM Subscription Issues Troubleshooting Do's and Don'ts も併せて参照してください。

Root Cause

正しい証明書で通信が適切に確立されていません。
# curl -v --proxy-user user:password --proxy proxy.example.com:8080 https://subscription.rhn.redhat.com --cacert /etc/rhsm/ca/redhat-uep.pem
* About to connect() to proxy proxy.example.com port 8080 (#0)
*   Trying 10.0.0.1... connected
* Connected to proxy.example.com (10.0.0.1) port 8080 (#0)
* Establish HTTP proxy tunnel to subscription.rhn.redhat.com:443
* Proxy auth using Basic with user 'username'
> CONNECT subscription.rhn.redhat.com:443 HTTP/1.1
> Host: subscription.rhn.redhat.com:443
> Proxy-Authorization:Basic XXEEAA =
> User-Agent: curl/7.19.7 (i386-redhat-linux-gnu) libcurl/7.19.7 NSS/3.12.9.0 zlib/1.2.3 libidn/1.18 libssh2/1.2.2
> Proxy-Connection:Keep-Alive
>
< HTTP/1.1 200 Connection established
< Date:Tue, 03 Jul 2012 13:03:51 GMT
< Age:2
< Proxy-Connection:Keep-Alive
< Via:1.0 localhost.localdomain
<
* Proxy replied OK to CONNECT request
* Initializing NSS with certpath:/etc/pki/nssdb
*   CAfile:/etc/rhsm/ca/redhat-uep.pem
  CApath: none
* Peer's certificate issuer is not recognized:'CN=proxy.example.com,O=My,L=RedHat,ST=South Carolina,C=US'
* NSS error -8179
* Closing connection #0
* Peer certificate cannot be authenticated with known CA certificates
curl:(60) Peer certificate cannot be authenticated with known CA certificates
More details here: http://curl.haxx.se/docs/sslcerts.html

curl performs SSL certificate verification by default, using a "bundle"
 of Certificate Authority (CA) public keys (CA certs).If the default
 bundle file isn't adequate, you can specify an alternate file
 using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
 the bundle, the certificate verification probably failed due to a
 problem with the certificate (it might be expired, or the name might
 not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
 the -k (or --insecure) option.

Diagnostic Steps

以下のトラブルシューティングの手順を確認してください。
  • システムの日時が、地理的場所にあわせて正しく設定されているか確認してください。
  • 次に、サブスクリプションマネージャの登録を解除して再登録します。RHSM を使用してサーバーが適切に登録されているか確認してください。
サーバーの登録を解除します。
set -x
# date && subscription-manager --proxy=proxy.example.com:3128 clean
All local data removed

#date && subscription-manager --proxy=proxy.example.com:3128 unsubscribe --all
This machine has been unsubscribed from all subscriptions

# date && subscription-manager --proxy=proxy.example.com:3128 unregister
Consumer 11111111-2222-3333-4444-555555555556 has been deleted
サーバーに関する情報を取得します。
# date && subscription-manager --proxy=proxy.example.com:3128 facts --list
サーバーを登録します。
# date && subscription-manager --proxy=proxy.example.com:3128 register
The system has been registered with id:11111111-2222-3333-4444-555555555555

# date && subscription-manager --proxy=proxy.example.com:3128 identity
Current identity is:11111111-2222-3333-4444-555555555555
name: gss01.example.com
org name:1111111
org id:11111112222222333333334444444555

date && subscription-manager --proxy=proxy.example.com:3128 subscribe --pool=<PoolId_from_the_previous_command>

#Or use simply:
# date && subscription-manager --proxy=proxy.example.com:3128 list --available
+-------------------------------------------+
    Available Subscriptions
+-------------------------------------------+

ProductName:            Red Hat Enterprise Linux Server, Self-support (1-2 sockets)
                        (Up to 1 guest)
ProductId:              RH0197181                
PoolId:                 11111111111111111111111111111111
Quantity:               10                       
Multi-Entitlement:      No                       
Expires:                01/01/2013               
MachineType:            physical
.
.

# date && subscription-manager --proxy=proxy.example.com:3128 subscribe --auto
Installed Product Current Status:
Product Name:           Red Hat Enterprise Linux Server
Status:                 Subscribed


# date && subscription-manager --proxy=proxy.example.com:3128 list --consumed
+-------------------------------------------+
    Consumed Product Subscriptions
+-------------------------------------------+

Product Name:           Red Hat Enterprise Linux Server
Contract Number:        4444444
Account Number:         333333
Serial Number:          2222222222222222222
Active:                 True                     
Quantity Used:          1                        
Service Level:          None                     
Service Type :          None                     
Begins:                 22/09/11                 
Expires:                01/01/22
.
.
.


# date && subscription-manager --proxy=proxy.example.com:3128 repos --list
+----------------------------------------------------------+
    Entitled Repositories in /etc/yum.repos.d/redhat.repo
+----------------------------------------------------------+
.
.
.
Repo Name:              Red Hat Enterprise Linux 6 Server (RPMs)
Repo Id:                rhel-6-server-rpms       
Repo Url:               https://cdn.redhat.com/content/dist/rhel/server/6/$releasever/$basearch/os
Enabled:                1                        

Repo Name:              Red Hat CloudForms Tools for RHEL 6 (RPMs)
Repo Id:                rhel-6-server-cf-tools-1-rpms
Repo Url:               https://cdn.redhat.com/content/dist/rhel/server/6/$releasever/$basearch/cf-tools/1.0/os
Enabled:                1
.
.
  • strace を生成して確認します。
yum clean all
export URLGRABBER_DEBUG=1,- 
sed -i.orig 's/debuglevel = 0/debuglevel = 1/g' /usr/lib64/python2.6/httplib.py 
strace -ttT -s1024 -v -o /tmp/yum.update.strace yum -d10 check-update
mv /usr/lib64/python2.6/httplib.py.orig /usr/lib64/python2.6/httplib.py
strace に、上記のような出力があることを確認してください。
  • システムは、プロキシサーバーを経由して subscription.rhn.redhat.com:443 に接続することができました。
2012-03-12 10:04:36,002 [DEBUG]  @connection.py:194 - Using proxy: proxy.server.com:3128
2012-03-12 10:04:36,002 [DEBUG]  @connection.py:209 - Making request:GET https://subscription.rhn.redhat.com:443/subscription/consumers/8c1cb059-xxxx-xxxx-xxxx-46025d2b9d35/certificates?serials=50
27624092264466693
2012-03-12 10:04:37,952 [DEBUG]  @connection.py:218 - Response status:200
  • yum コマンド試行時の strace は、 プロキシ proxy.server.com:3128 を経由して cdn.redhat.com:443 への接続に当初は成功していることを示しています。
14:59:05.914373 connect(7, {sa_family=AF_INET, sin_port=htons(3128), sin_addr=inet_addr("192.168.0.2")}, 16) = -1 EINPROGRESS (Operation now in progress) <0.000022>
14:59:05.914423 poll([{fd=7, events=POLLOUT|POLLWRNORM}], 1, 29998) = 1 ([{fd=7, revents=POLLOUT|POLLWRNORM}]) <0.000227>
14:59:05.914693 getsockopt(7, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 <0.000017>
14:59:05.914749 sendto(7, "CONNECT cdn.redhat.com:443 HTTP/1.1\r\nHost: cdn.redhat.com:443\r\nUser-Agent: urlgrabber/3.9.1 yum/3.2.29\r\nProxy-Connection:Keep-Alive\r\n\r\n", 136, MSG_NOSIGNAL, NU
LL, 0) = 136 <0.000012>
14:59:05.914794 poll([{fd=7, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}], 1, 1000) = 1 ([{fd=7, revents=POLLIN|POLLRDNORM}]) <0.231993>
14:59:06.146848 recvfrom(7, "HTTP/1.0 200 Connection established\r\n\r\n", 16384, 0, NULL, NULL) = 39 <0.000024>
curl --head --key /etc/pki/entitlement/4790939584130415916-key.pem -E /etc/pki/entitlement/4790939584130415916.pem -k https://cdn.redhat.com/content/dist/rhel/server/5/5Server/x86_64/cf-tools/1.0/os/repodata/repomd.xml -x proxy.example.com:3128 --verbose -H "Cache-control: no-cache" -H "Pragma: no-cache" --cacert /etc/rhsm/ca/redhat-uep.pem
* About to connect() to proxy proxy.example.com port 3128 (#0)                                                                                                                                              
*   Trying 10.0.0.1... connected                                                                                                                                                                            
* Connected to proxy.example.com (10.0.0.1) port 3128 (#0)                                                                                                                                               
* Establish HTTP proxy tunnel to cdn.redhat.com:443                                                                                                                                                            
> CONNECT cdn.redhat.com:443 HTTP/1.1                                                                                                                                                                          
> Host: cdn.redhat.com:443                                                                                                                                                                                     
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.12.9.0 zlib/1.2.3 libidn/1.18 libssh2/1.2.2                                                                                           
> Proxy-Connection:Keep-Alive                                                                                                                                                                                 
>                                                                                                                                                                                                              
< HTTP/1.0 200 Connection established                                                                                                                                                                          
<                                                                                                                                                                                                              
* Proxy replied OK to CONNECT request
* Initializing NSS with certpath:/etc/pki/nssdb
* warning: ignoring value of ssl.verifyhost
* skipping SSL peer certificate verification
* NSS: client certificate:PEM Token #1:5027624092264466693.pem
*       subject:CN=8a85f98435edb09d01360626e0924712
*       start date:Jan 01 05:00:00 2012 GMT
*       expire date:Jan 01 4:59:59 2013 GMT
*       common name:8a85f98435edb09d01360626e0924712
*       issuer:E=ca-support@redhat.com,CN=Red Hat Candlepin Authority,OU=Red Hat Network,O="Red Hat, Inc.",ST=North Carolina,C=US
* SSL connection using TLS_RSA_WITH_AES_256_CBC_SHA
* Server certificate:
*       subject:CN=cdn.redhat.com,OU=IT,O="Red Hat, Inc.",L=Raleigh,ST=NORTH CAROLINA,C=US
*       start date:Jul 19 16:16:14 2010 GMT
*       expire date:Jul 16 16:16:14 2020 GMT
*       common name: cdn.redhat.com
*       issuer:E=ca-support@redhat.com,CN=Red Hat Entitlement Operations Authority,OU=Red Hat Network,O="Red Hat, Inc.",ST=North Carolina,C=US
> GET /content/dist/rhel/server/5/5Server/x86_64/cf-tools/1.0/os/repodata/repomd.xml HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.12.9.0 zlib/1.2.3 libidn/1.18 libssh2/1.2.2
> Host: cdn.redhat.com
> Accept:*/*
> 
< HTTP/1.1 200 OK
  • プロキシを使用せずに、openssl を使用して接続をテストします。
openssl s_client -port 443 -CApath /etc/pki/entitlement/ -host cdn.redhat.com -prexit -cert 6666666666666666666.pem -key 6666666666666666666-key.pem
CONNECTED(00000003)
depth=1 C = US, ST = North Carolina, O = "Red Hat, Inc.", OU = Red Hat Network, CN = Red Hat Entitlement Operations Authority, emailAddress = ca-support@redhat.com
verify error:num=20:unable to get local issuer certificate
verify return:0
---
Certificate chain
 0 s:/C=US/ST=NORTH CAROLINA/L=Raleigh/O=Red Hat, Inc./OU=IT/CN=cdn.redhat.com
   i:/C=US/ST=North Carolina/O=Red Hat, Inc./OU=Red Hat Network/CN=Red Hat Entitlement Operations Authority/emailAddress=ca-support@redhat.com
 1 s:/C=US/ST=North Carolina/O=Red Hat, Inc./OU=Red Hat Network/CN=Red Hat Entitlement Operations Authority/emailAddress=ca-support@redhat.com
   i:/C=US/ST=North Carolina/L=Raleigh/O=Red Hat, Inc./OU=Red Hat Network/CN=Entitlement Master CA/emailAddress=ca-support@redhat.com
---
Server certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
subject=/C=US/ST=NORTH CAROLINA/L=Raleigh/O=Red Hat, Inc./OU=IT/CN=cdn.redhat.com
issuer=/C=US/ST=North Carolina/O=Red Hat, Inc./OU=Red Hat Network/CN=Red Hat Entitlement Operations Authority/emailAddress=ca-support@redhat.com
---
Acceptable client certificate CA names
/C=US/ST=North Carolina/O=Red Hat, Inc./OU=Red Hat Network/CN=Red Hat Entitlement Operations Authority/emailAddress=ca-support@redhat.com
/C=US/ST=North Carolina/L=Raleigh/O=Red Hat, Inc./OU=Red Hat Network/CN=Entitlement Master CA/emailAddress=ca-support@redhat.com
/C=US/ST=North Carolina/O=Red Hat, Inc./OU=Red Hat Network/CN=Red Hat Candlepin Authority/emailAddress=ca-support@redhat.com
---
SSL handshake has read 3693 bytes and written 100396 bytes
---
New, TLSv1/SSLv3, Cipher is AES256-SHA
Server public key is 1024 bit
Secure Renegotiation IS supported
Compression:NONE
Expansion:NONE
SSL-Session:
    Protocol  :TLSv1
    Cipher    :AES256-SHA
    Session-ID:4EF45E40519DD86B56C5D62938E42B2ACB85F421F1B4853E607BE42738047A31
    Session-ID-ctx: 
    Master-Key:7E3E5B2F9E2C257D76EB23E3477C67423761D7B843068EA95A43D3749D5464A52040F85635E3D8113F3D01A60E1AFEB4
    Key-Arg   :None
    Krb5 Principal:None
    PSK identity:None
    PSK identity hint:None
    Start Time:1345283601
    Timeout   :300 (sec)
    Verify return code:20 (unable to get local issuer certificate)
---

subscription.rhn.redhat.com への接続をテストする方法

  • curl を使用してマシンが subscription.rhn.redhat.com に接続できることを確認します。
$ curl -v -k https://subscription.rhn.redhat.com/subscription/ --cacert /etc/rhsm/ca/redhat-uep.pem
* About to connect() to subscription.rhn.redhat.com port 443 (#0)
*   Trying 10.4.127.49... connected
* Connected to subscription.rhn.redhat.com (10.4.127.49) port 443 (#0)
...
* Closing connection #0
[{"rel":"consumers","href":"/consumers"},{"rel":"distributor_versions","href":"/distributor_versions"},{"rel":"entitlements","href":"/entitlements"},{"rel":"hypervisors","href":"/hypervisors"},{"rel":"jobs","href":"/jobs"},{"rel":"owners","href":"/owners"},{"rel":"pools","href":"/pools"},{"rel":"products","href":"/products"},{"rel":"subscriptions","href":"/subscriptions"},{"rel":"users","href":"/users"}]
  • openssl s_client を使用して接続をテストします。
$ openssl s_client -port 443 -CApath /etc/rhsm/ca/redhat-uep.pem -host subscription.rhn.redhat.com
CONNECTED(00000003)
depth=2 C = US, ST = North Carolina, L = Raleigh, O = "Red Hat, Inc.", OU = Red Hat Network, CN = Entitlement Master CA, emailAddress = ca-support@redhat.com
verify error:num=19:self signed certificate in certificate chain
verify return:0
---
...

    Start Time:1397793816
    Timeout   :300 (sec)
    Verify return code:19 (self signed certificate in certificate chain)
---
次に、以下のコマンドを入力し、
GET /subscription/
以下の出力を取得します。
[{"rel":"consumers","href":"/consumers"},{"rel":"distributor_versions","href":"/distributor_versions"},{"rel":"entitlements","href":"/entitlements"},{"rel":"hypervisors","href":"/hypervisors"},{"rel":"jobs","href":"/jobs"},{"rel":"owners","href":"/owners"},{"rel":"pools","href":"/pools"},{"rel":"products","href":"/products"},{"rel":"subscriptions","href":"/subscriptions"},{"rel":"users","href":"/users"}]closed
  • または、コンシューマー証明書およびコンシューマーキーで基本的な接続をテストしてください。RHNUSERNAME には、ポータルのログインを入力してください。
# curl --key /etc/pki/consumer/key.pem --cert /etc/pki/consumer/cert.pem --cacert redhat-uep.pem https://subscription.rhn.redhat.com/subscription/users/RHNUSERNAME/owners

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