我正在尝试在aws ec2免费单节点ubuntu实例上安装Cassandra。我正在关注此链接https://wiki.apache.org/cassandra/DebianPackaging以在ubuntu 16.04上安装cassandra。
我成功地完成了所有步骤，直到这一步
udo apt-get install cassandra
此步骤给出了如下错误：
Reading package lists... Done
Building dependency tree
Reading state information... Done
cassandra is already the newest version (3.11.1).
0 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up oracle-java8-installer (8u151-1~webupd8~0) ...
Using wget settings from /var/cache/oracle-jdk8-installer/wgetrc
Downloading Oracle Java 8...
--2018-01-17 12:33:48-- http://download.oracle.com/otn-pub/java/jdk/8u151-b12/e758a0de34e24606bca991d704f6dcbf/jdk-8u151-linux-x64.tar.gz
Resolving download.oracle.com (download.oracle.com)... 23.198.126.121
Connecting to download.oracle.com (download.oracle.com)|23.198.126.121|:80... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: https://edelivery.oracle.com/otn-pub/java/jdk/8u151-b12/e758a0de34e24606bca991d704f6dcbf/jdk-8u151-linux-x64.tar.gz [following]
--2018-01-17 12:33:48-- https://edelivery.oracle.com/otn-pub/java/jdk/8u151-b12/e758a0de34e24606bca991d704f6dcbf/jdk-8u151-linux-x64.tar.gz
Resolving edelivery.oracle.com (edelivery.oracle.com)... 104.122.102.128, 2600:140f:4:1a0::2d3e, 2600:140f:4:196::2d3e
Connecting to edelivery.oracle.com (edelivery.oracle.com)|104.122.102.128|:443... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: http://download.oracle.com/otn-pub/java/jdk/8u151-b12/e758a0de34e24606bca991d704f6dcbf/jdk-8u151-linux-x64.tar.gz?AuthParam=1516192549_30e1e90727719cbe83767ebf9151aff5 [following]
--2018-01-17 12:33:49-- http://download.oracle.com/otn-pub/java/jdk/8u151-b12/e758a0de34e24606bca991d704f6dcbf/jdk-8u151-linux-x64.tar.gz?AuthParam=1516192549_30e1e90727719cbe83767ebf9151aff5
Connecting to download.oracle.com (download.oracle.com)|23.198.126.121|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2018-01-17 12:33:51 ERROR 404: Not Found.
download failed
Oracle JDK 8 is NOT installed.
dpkg: error processing package oracle-java8-installer (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of cassandra:
cassandra depends on openjdk-8-jre-headless | java8-runtime; however:
Package openjdk-8-jre-headless is not installed.
Package oracle-java8-installer which provides openjdk-8-jre-headless is not configured yet.
Package java8-runtime is not installed.
Package oracle-java8-installer which provides java8-runtime is not configured yet.
dpkg: error processing package cassandra (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Errors were encountered while processing:
oracle-java8-installer
cassandra
E: Sub-process /usr/bin/dpkg returned an error code (1)
它表示没有安装Oracle jdk。但我已经在我的系统中安装了Oracle jdk8。检查以下内容：
$ java -version
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)
$ which java
/usr/bin/java
$ which javac
/usr/bin/javac
$ echo $JAVA_HOME
/usr/lib/jvm/jdk1.8.0_161
$ sudo update-alternatives --config java
[sudo] password for hduser:
There is 1 choice for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------------------
0 /usr/lib/jvm/jdk1.8.0_161/bin/java 0 auto mode
* 1 /usr/lib/jvm/jdk1.8.0_161/bin/java 0 manual mode
Press <enter> to keep the current choice[*], or type selection number:
请帮我解决这个问题。
答案 0 :(得分：1)
Oracle下载过程发生了一些变化，几乎互联网上的每个安装脚本都不起作用。坐下来放松，这个问题从昨天早上开始。
答案 1 :(得分：0)
或者你可以添加Oracles PPA并使用apt-get从那里安装。请按照以下命令操作。
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer
javac -version
答案 2 :(得分：0)
这个erorr看起来像一个ppa：webupd8team / java存储库问题。下载链接现在已更改，无法下载JDK。