正如标题所示，我正在尝试在RHEL 7.4上安装Foreman 1.16
我正在使用带有t2.large实例的AWS（它满足运行安装程序的最小4GB RAM）
我正在关注官方文档中的quickstart guide
当我到达我需要跑步的舞台时
sudo foreman-installer
我收到以下错误
Execution of '/bin/yum -d 0 -e 0 -y install foreman-release-scl' returned 1: warning: /var/cache/yum/x86_64/7Server/foreman/packages/centos-release-scl-2-2.el7.centos.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for centos-release-scl-2-2.el7.centos.noarch.rpm is not installed
The GPG keys listed for the "Foreman 1.16" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.
Failing package is: centos-release-scl-rh-2-2.el7.centos.noarch
GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-foreman
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/execution.rb:285:in `execute'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/provider.rb:101:in `execute'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/provider/package/yum.rb:220:in `install'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/type/package.rb:88:in `block (3 levels) in <module:Puppet>'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/property.rb:491:in `set'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/property.rb:568:in `sync'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:236:in `sync'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:134:in `sync_if_needed'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:80:in `perform_changes'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/resource_harness.rb:21:in `evaluate'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:257:in `apply'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:277:in `eval_resource'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:181:in `call'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:181:in `block (2 levels) in evaluate'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:517:in `block in thinmark'
/opt/puppetlabs/puppet/lib/ruby/2.4.0/benchmark.rb:308:in `realtime'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:516:in `thinmark'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:181:in `block in evaluate'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/graph/relationship_graph.rb:121:in `traverse'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction.rb:171:in `evaluate'
/usr/share/gems/gems/kafo-2.0.1/modules/kafo_configure/lib/puppet/parser/functions/add_progress.rb:30:in `evaluate_with_trigger'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/resource/catalog.rb:238:in `block in apply'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/log.rb:156:in `with_destination'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/transaction/report.rb:144:in `as_logging_destination'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/resource/catalog.rb:237:in `apply'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:174:in `block in apply_catalog'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:232:in `block in benchmark'
/opt/puppetlabs/puppet/lib/ruby/2.4.0/benchmark.rb:308:in `realtime'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:231:in `benchmark'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:173:in `apply_catalog'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:348:in `run_internal'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:224:in `block in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/context.rb:65:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet.rb:260:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/configurer.rb:198:in `run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/apply.rb:354:in `apply_catalog'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/apply.rb:280:in `block (2 levels) in main'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/context.rb:65:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet.rb:260:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/apply.rb:280:in `block in main'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/context.rb:65:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet.rb:260:in `override'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/apply.rb:233:in `main'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application/apply.rb:174:in `run_command'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:375:in `block in run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util.rb:665:in `exit_on_fail'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:375:in `run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/command_line.rb:137:in `run'
/opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/util/command_line.rb:73:in `execute'
/opt/puppetlabs/puppet/bin/puppet:5:in `<main>'
/Stage[main]/Foreman::Repos::Extra/Package[foreman-release-scl]/ensure: change from 'purged' to 'present' failed: Execution of '/bin/yum -d 0 -e 0 -y install foreman-release-scl' returned 1: warning: /var/cache/yum/x86_64/7Server/foreman/packages/centos-release-scl-2-2.el7.centos.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Public key for centos-release-scl-2-2.el7.centos.noarch.rpm is not installed
The GPG keys listed for the "Foreman 1.16" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.
Failing package is: centos-release-scl-rh-2-2.el7.centos.noarch
GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-foreman
Could not find a suitable provider for foreman_config_entry
Could not find a suitable provider for foreman_smartproxy
以下提到禁用GPG测试（不确定这是不是一个好主意？）
https://community.theforeman.org/t/katello-3-5-rhel-7-4-install-failure/8291/3
好的，所以设法弄清楚这个（或我的同事做了！）。在此发布以防万一其他人遇到此问题。
这与本文中引用的问题相同：https://projects.theforeman.org/issues/19600
主要区别在于我们背后是公司代理，因此必须手动创建GPG密钥文件
复制密钥来自：https://www.centos.org/keys/RPM-GPG-KEY-CentOS-7
然后上传到我想安装Foreman的服务器，并运行：
rpm --import /tmp/gpg-key-filename
一切正常！