Nexus一直對Eclipse P2遠程存儲庫說「遠程自動阻塞和不可用」

Question

我將Eclipse P2存儲庫作爲代理添加到我的Nexus中，但在檢查狀態一段時間後，狀態變爲「Remote automatically blocked and unavailable」。我配置了存儲庫類型爲P2的遠程URL http://download.eclipse.org/eclipse/updates/4.4/。這是否正確，它應該如何工作？

我想我可能因爲我的許多試驗和錯誤而被列入黑名單，但是當我在POM中使用與URL相同的URL時，即使它是從相同的IP獲取的，它也能正常工作。所以Nexus代理配置似乎存在問題。我配置的代理服務器是這樣的：

• 庫類型：代理
• 提供者：P2 Update站點
• 格式：P2
• 政策：混合
• 遠程存儲位置：http://download.eclipse.org/eclipse/updates/3.6/
• 下載遠程索引：false
• 啓用自動屏蔽：true
• 文件內容驗證：真
• 校驗策略：忽略
• 允許文件瀏覽：真
• 在搜索中包括：假
• 發佈網址：真
• 找不到緩存TTL：1440分鐘
• 神器最大年齡： -1分鐘
• 元最高年齡：1440分鐘
• 項目最大年齡：1440分鐘
• HTTP請求設置：無配置爲

此配置中是否存在問題？

日誌說只是「暫停」：

 
2015-05-25 19:40:51,544+0200 DEBUG [proxy-3-thread-389] smith remote.storage.outbound - [eclipse-3.6-try1] HEAD http://download.eclipse.org/eclipse/updates/3.6/ - 30,00 s 
2015-05-25 19:40:51,544+0200 DEBUG [proxy-3-thread-389] smith org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage - HEAD method failed, will attempt GET. Exception: Connection pool timeout error while executing HEAD method [repositoryId="eclipse-3.6-try1", requestPath="/", remoteUrl="http://download.eclipse.org/eclipse/updates/3.6/"] 
org.sonatype.nexus.proxy.RemoteStorageTransportOverloadedException: Connection pool timeout error while executing HEAD method [repositoryId="eclipse-3.6-try1", requestPath="/", remoteUrl="http://download.eclipse.org/eclipse/updates/3.6/"] 
    at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:598) ~[nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequest(HttpClientRemoteStorage.java:515) ~[nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.executeRequestAndRelease(HttpClientRemoteStorage.java:622) ~[nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.checkRemoteAvailability(HttpClientRemoteStorage.java:371) ~[nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.sonatype.nexus.proxy.storage.remote.AbstractHTTPRemoteRepositoryStorage.isReachable(AbstractHTTPRemoteRepositoryStorage.java:50) [nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.sonatype.nexus.proxy.repository.AbstractProxyRepository.isRemoteStorageReachable(AbstractProxyRepository.java:1660) [nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.sonatype.nexus.proxy.repository.AbstractProxyRepository$RemoteStatusUpdateCallable.call(AbstractProxyRepository.java:1634) [nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.sonatype.nexus.threads.MDCAwareCallable.call(MDCAwareCallable.java:44) [nexus-core-2.11.2-03.jar:2.11.2-03] 
    at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [shiro-core-1.2.3.jar:1.2.3] 
    at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [shiro-core-1.2.3.jar:1.2.3] 
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_31] 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_31] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_31] 
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_31] 
Caused by: org.apache.http.conn.ConnectionPoolTimeoutException: Timeout waiting for connection from pool 
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.leaseConnection(PoolingHttpClientConnectionManager.java:254) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager$1.get(PoolingHttpClientConnectionManager.java:231) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:173) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) ~[httpclient-4.3.6.jar:4.3.6] 
    at org.sonatype.nexus.proxy.storage.remote.httpclient.HttpClientRemoteStorage.doExecuteRequest(HttpClientRemoteStorage.java:557) ~[nexus-core-2.11.2-03.jar:2.11.2-03] 
    ... 13 common frames omitted 

Answer 1

我發現這個問題https://issues.sonatype.org/browse/NEXUS-5466它很好地描述了我的問題。原因似乎是Nexus的內部問題，無法分配所需的內部資源。

我停止並重新啓動Nexus，現在問題消失了。

很遺憾，這個bug已經關閉爲「不會修復」。

Answer 2

我不知道你爲什麼在一個Maven POM文件，但在從代理下載而言，這是正確的使用P2存儲庫，併爲我工作同時包含4.4和3.6的URL。