From cd2401d2cc4cfd427357530be24ce26b508f99da Mon Sep 17 00:00:00 2001 From: Steve Loughran Date: Tue, 14 Feb 2023 17:22:59 +0000 Subject: [PATCH] HADOOP-18470. More in the 3.3.5 index.html about security (#5383) Expands on the comments in cluster config to tell people they shouldn't be running a cluster without a private VLAN in cloud, that Knox is good here, and unsecured clusters without a VLAN are just computation-as-a-service to crypto miners Contributed by Steve Loughran --- .../src/site/markdown/SingleCluster.md.vm | 2 + hadoop-project/src/site/markdown/index.md.vm | 63 +++++++++++++++++-- 2 files changed, 59 insertions(+), 6 deletions(-) diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/SingleCluster.md.vm b/hadoop-common-project/hadoop-common/src/site/markdown/SingleCluster.md.vm index 3c8af8fd6e..bbea16855e 100644 --- a/hadoop-common-project/hadoop-common/src/site/markdown/SingleCluster.md.vm +++ b/hadoop-common-project/hadoop-common/src/site/markdown/SingleCluster.md.vm @@ -35,6 +35,8 @@ These instructions do not cover integration with any Kerberos services, -everyone bringing up a production cluster should include connecting to their organisation's Kerberos infrastructure as a key part of the deployment. +See [Security](./SecureMode.html) for details on how to secure a cluster. + Prerequisites ------------- diff --git a/hadoop-project/src/site/markdown/index.md.vm b/hadoop-project/src/site/markdown/index.md.vm index 5e0a46449f..e7ed0fe806 100644 --- a/hadoop-project/src/site/markdown/index.md.vm +++ b/hadoop-project/src/site/markdown/index.md.vm @@ -24,7 +24,7 @@ Users are encouraged to read the full set of release notes. This page provides an overview of the major changes. Azure ABFS: Critical Stream Prefetch Fix ---------------------------------------------- +---------------------------------------- The abfs has a critical bug fix [HADOOP-18546](https://issues.apache.org/jira/browse/HADOOP-18546). @@ -120,25 +120,76 @@ be vulnerable, and the ugprades should also reduce the number of false positives security scanners report. We have not been able to upgrade every single dependency to the latest -version there is. Some of those changes are just going to be incompatible. -If you have concerns about the state of a specific library, consult the pache JIRA -issue tracker to see whether a JIRA has been filed, discussions have taken place about +version there is. Some of those changes are fundamentally incompatible. +If you have concerns about the state of a specific library, consult the Apache JIRA +issue tracker to see if an issue has been filed, discussions have taken place about the library in question, and whether or not there is already a fix in the pipeline. *Please don't file new JIRAs about dependency-X.Y.Z having a CVE without searching for any existing issue first* -As an open source project, contributions in this area are always welcome, +As an open-source project, contributions in this area are always welcome, especially in testing the active branches, testing applications downstream of those branches and of whether updated dependencies trigger regressions. + +Security Advisory +================= + +Hadoop HDFS is a distributed filesystem allowing remote +callers to read and write data. + +Hadoop YARN is a distributed job submission/execution +engine allowing remote callers to submit arbitrary +work into the cluster. + +Unless a Hadoop cluster is deployed with +[caller authentication with Kerberos](./hadoop-project-dist/hadoop-common/SecureMode.html), +anyone with network access to the servers has unrestricted access to the data +and the ability to run whatever code they want in the system. + +In production, there are generally three deployment patterns which +can, with care, keep data and computing resources private. +1. Physical cluster: *configure Hadoop security*, usually bonded to the + enterprise Kerberos/Active Directory systems. + Good. +1. Cloud: transient or persistent single or multiple user/tenant cluster + with private VLAN *and security*. + Good. + Consider [Apache Knox](https://knox.apache.org/) for managing remote + access to the cluster. +1. Cloud: transient single user/tenant cluster with private VLAN + *and no security at all*. + Requires careful network configuration as this is the sole + means of securing the cluster.. + Consider [Apache Knox](https://knox.apache.org/) for managing + remote access to the cluster. + +*If you deploy a Hadoop cluster in-cloud without security, and without configuring a VLAN +to restrict access to trusted users, you are implicitly sharing your data and +computing resources with anyone with network access* + +If you do deploy an insecure cluster this way then port scanners will inevitably +find it and submit crypto-mining jobs. If this happens to you, please do not report +this as a CVE or security issue: it is _utterly predictable_. Secure *your cluster* if +you want to remain exclusively *your cluster*. + +Finally, if you are using Hadoop as a service deployed/managed by someone else, +do determine what security their products offer and make sure it meets your requirements. + + Getting Started =============== The Hadoop documentation includes the information you need to get started using -Hadoop. Begin with the +Hadoop. Begin with the [Single Node Setup](./hadoop-project-dist/hadoop-common/SingleCluster.html) which shows you how to set up a single-node Hadoop installation. Then move on to the [Cluster Setup](./hadoop-project-dist/hadoop-common/ClusterSetup.html) to learn how to set up a multi-node Hadoop installation. +Before deploying Hadoop in production, read +[Hadoop in Secure Mode](./hadoop-project-dist/hadoop-common/SecureMode.html), +and follow its instructions to secure your cluster. + +