Patch CentOS 7 and EPEL 7 repos to use archives

centos7-eol-archived-repo.sh

#!/bin/bash

ACTIVE_REPO_DIR="/etc/yum.repos.d"
BACKUP_REPO_DIR="$ACTIVE_REPO_DIR/backup"
STATUS_FILE="/etc/yum.repos.d/CENTOS7_EOL_REPO_URL_PATCHED.txt"
CENTOS_VAULT_SERVER_BASE="https://mirrors.aliyun.com/centos-vault"
EPEL_RPM_URL="https://mirrors.aliyun.com/epel-archive/7/x86_64/Packages/e/epel-release-7-14.noarch.rpm"
EPEL_REPO="epel.repo"
EPEL_VAULT_SERVER_BASE="https://mirrors.aliyun.com/epel-archive"

# Check if the script has already been run
if [ -f "$STATUS_FILE" ]; then
    echo "The script has already been run. Exiting."
    cat $STATUS_FILE
    exit 1
fi

# Create backup directory
mkdir -p "$BACKUP_REPO_DIR"

# Function to backup and modify repo files
process_repo() {
    local repo="$1"
    local baseurl="$2"

    if [ ! -f "$BACKUP_REPO_DIR/$repo" ]; then
        cp "$ACTIVE_REPO_DIR/$repo" "$BACKUP_REPO_DIR"
    fi

    if [ -f "$ACTIVE_REPO_DIR/$repo" ]; then
        if [[ "$repo" == CentOS-* ]]; then
            # For CentOS repos
            sed -i -e "s|^mirrorlist=|#mirrorlist=|g" \
                   -e "s|^#baseurl=http://mirror.centos.org/|baseurl=$baseurl/|g" \
                   "$ACTIVE_REPO_DIR/$repo"
        elif [[ "$repo" == "$EPEL_REPO" ]]; then
            # For EPEL repos
            sed -i -e "s|^metalink=|#metalink=|g" \
                   -e "s|^#baseurl=http://download.example/pub/epel/|baseurl=$baseurl/|g" \
                   "$ACTIVE_REPO_DIR/$repo"
        fi
    else
        echo "File ($ACTIVE_REPO_DIR/$repo) does not exist, skipping replacement"
    fi
}

# Process CentOS repos
for repo in CentOS-{Base,fasttrack,x86_64-kernel}.repo; do
    process_repo "$repo" "$CENTOS_VAULT_SERVER_BASE"
done

# Import GPG keys and install EPEL
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
yum install -y epel-release
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
yum install -y "$EPEL_RPM_URL"

# Process EPEL repo
process_repo "$EPEL_REPO" "$EPEL_VAULT_SERVER_BASE"

# Create status file to indicate the script has run
echo "YUM Repositories of EOL'd CentOS 7 and EPEL 7 on this node, had been patched." > "$STATUS_FILE"

echo "Script completed successfully."