centos7: fix package build error

fluent-package/Gemfile

@@ -2,6 +2,12 @@
 
 require File.expand_path('../config.rb', __FILE__)
 
+def platform_centos7?
+  return false unless File.exist?("/etc/os-release")
+  os_info = File.read("/etc/os-release")
+  os_info.include?("CentOS Linux 7") ? true : false
+end
+
 source "https://rubygems.org"
 
 # core gems
@@ -102,7 +108,10 @@ not_windows_platforms = [:ruby]
 gem "capng_c", "0.2.3", platforms: not_windows_platforms
 # Use newer bundled rdkafka with librdkafka 2.8.0 to support AlmaLinux 10
 # (librdkafka 2.8.0 supports "OpenSSL without the ENGINE component")
-gem "rdkafka", "0.21.0", platforms: not_windows_platforms
+# librdkafka 2.8.0 can't be built on CentOS 7.
+unless platform_centos7?
+  gem "rdkafka", "0.21.0", platforms: not_windows_platforms
+end
 # Keep systemd-journal 2.0.0 and f-p-systemd 1.1.0 until regression issue is fixed
 # See https://github.com/ledbettj/systemd-journal/pull/109
 gem "systemd-journal", "2.0.0", platforms: not_windows_platforms

fluent-package/Rakefile

@@ -1164,6 +1164,10 @@ class BuildTask
         rm_f(static_library)
       end
     end
+    Dir.glob("#{fluent_package_staging_dir}/**/libffi/**/*.py").each do |python_file|
+      # Remove unnecessary python file to avoid error in brp-python-bytecompile on CentOS 7
+      remove_files(python_file)
+    end
     Dir.glob("#{fluent_package_staging_dir}/**/.git").each do |git_dir|
       remove_files(git_dir, true)
     end

fluent-package/yum/centos-7/Dockerfile

@@ -15,45 +15,64 @@
 # specific language governing permissions and limitations
 # under the License.
 
-ARG FROM=centos:7
+ARG FROM=ghcr.io/fluent/fluent-package-centos-7
 FROM ${FROM}
 
-COPY qemu-* /usr/bin/
+## The following setting had used for initial building ghcr.io/fluent/fluent-package-centos-7.
 
-ARG DEBUG
-
-RUN \
-  quiet=$([ "${DEBUG}" = "yes" ] || echo "--quiet") && \
-  yum update -y ${quiet} && \
-  yum install -y ${quiet} centos-release-scl && \
-  yum install -y ${quiet} epel-release && \
-  yum groupinstall -y ${quiet} "Development Tools" && \
-  yum install -y ${quiet} \
-    devtoolset-11 \
-    rh-ruby26-ruby-devel \
-    rh-ruby26-rubygems \
-    rh-ruby26-rubygem-rake \
-    rh-ruby26-rubygem-bundler \
-    libedit-devel \
-    ncurses-devel \
-    libyaml-devel \
-    libffi-devel \
-    git \
-    cyrus-sasl-devel \
-    nss-softokn-freebl-devel \
-    pkg-config \
-    rpm-build \
-    rpmdevtools \
-    redhat-rpm-config \
-    openssl-devel \
-    tar \
-    zlib-devel \
-    rpmlint \
-    cmake3 && \
-  # raise IPv4 priority
-  echo "precedence ::ffff:0:0/96 100" > /etc/gai.conf && \
-  # enable multiplatform feature (bundler 2.4.22 is the latest version which supports ruby 2.6)
-  source /opt/rh/rh-ruby26/enable && gem install --no-document --install-dir /opt/rh/rh-ruby26/root/usr/share/gems bundler:2.4.22 builder && \
-  scl enable devtoolset-11 bash && \
-  yum clean ${quiet} all && \
-  curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+# ARG FROM=centos:7
+# FROM ${FROM}
+#
+# COPY qemu-* /usr/bin/
+#
+# ARG DEBUG
+#
+# RUN sed -i'' -e 's/^mirrorlist/#mirrorlist/g' \
+#              -e 's/^#baseurl/baseurl/g' \
+#              -e 's,mirror.centos.org/centos/$releasever,vault.centos.org/7.9.2009,g' \
+#              /etc/yum.repos.d/CentOS-Base.repo
+#
+# RUN \
+#   quiet=$([ "${DEBUG}" = "yes" ] || echo "--quiet") && \
+#   yum update -y ${quiet} && \
+#   yum install -y ${quiet} centos-release-scl && \
+#   sed -i'' -e 's/^mirrorlist/#mirrorlist/g' \
+#            -e 's/^# baseurl/baseurl/g' \
+#            -e 's,mirror.centos.org/centos/7,vault.centos.org/7.9.2009,g' \
+#            /etc/yum.repos.d/CentOS-SCLo-scl.repo && \
+#   sed -i'' -e 's/^mirrorlist/#mirrorlist/g' \
+#            -e 's/^#baseurl/baseurl/g' \
+#            -e 's,mirror.centos.org/centos/7,vault.centos.org/7.9.2009,g' \
+#            /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo && \
+#   yum install -y ${quiet} epel-release && \
+#   yum groupinstall -y ${quiet} "Development Tools" && \
+#   yum install -y ${quiet} \
+#     devtoolset-11 \
+#     rh-ruby26-ruby-devel \
+#     rh-ruby26-rubygems \
+#     rh-ruby26-rubygem-rake \
+#     rh-ruby26-rubygem-bundler \
+#     libcap-ng-devel \
+#     libedit-devel \
+#     ncurses-devel \
+#     libyaml-devel \
+#     libffi-devel \
+#     git \
+#     cyrus-sasl-devel \
+#     nss-softokn-freebl-devel \
+#     pkg-config \
+#     rpm-build \
+#     rpmdevtools \
+#     redhat-rpm-config \
+#     openssl-devel \
+#     tar \
+#     zlib-devel \
+#     rpmlint \
+#     cmake3 && \
+#   # raise IPv4 priority
+#   echo "precedence ::ffff:0:0/96 100" > /etc/gai.conf && \
+#   # enable multiplatform feature (bundler 2.4.22 is the latest version which supports ruby 2.6)
+#   source /opt/rh/rh-ruby26/enable && gem install --no-document --install-dir /opt/rh/rh-ruby26/root/usr/share/gems bundler:2.4.22 builder && \
+#   scl enable devtoolset-11 bash && \
+#   yum clean ${quiet} all && \
+#   curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y