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低 4GB RAM）
我正在遵循官方文档中的快速入门指南
当我到达我需要跑步的阶段时
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
下面提到禁用 GPG 测试（不确定这是否是个好主意？）
https://community.theforeman.org/t/katello-3-5-rhel-7-4-install-failure/8291/3