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CentOS/RHEL 6 EOL: Switch to the Vault Repos & Fix yum TLS/Cert Errors

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CentOS/RHEL 6 EOL: Switch to the Vault & Fix yum TLS/Cert Problems CentOS/RHEL 6 mirrors are gone. To keep legacy hosts updating, point yum to the CentOS Vault and refresh certificates. Below is a minimal, repeatable setup. 1) Disable the old mirrorlist repos sed -ri 's/^enabled=1/enabled=0/' /etc/yum.repos.d/CentOS-Base.repo || true 2) Create a lean Vault repo file Enable only the 6.10 vault repos (fast/stable) and set metadata to never expire: cat >/etc/yum.repos.d/CentOS-Vault.repo <<'EOF' [C6.10-base] name=CentOS-6.10 - Base baseurl=http://vault.epel.cloud/6.10/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 enabled=1 metadata_expire=never [C6.10-updates] name=CentOS-6.10 - Updates baseurl=http://vault.epel.cloud/6.10/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6 enabled=1 metadata_expire=never [C6.10-extras] name=CentOS-6.10 - Extras baseurl=http://vault.epel.cloud/6.10/ext...
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Location: Houston, TX, USA
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Headless NVIDIA on CentOS/RHEL 6: VirtualGL 2.6 + TurboVNC 2.2 (Working Guide)

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Headless NVIDIA + VirtualGL + TurboVNC on CentOS/RHEL 6 (EOL): A Working Guide Why this post? CentOS/RHEL 6 are end-of-life, so current docs often break. This guide shows a known-working setup for running OpenGL apps over the network with VirtualGL 2.6.x and TurboVNC 2.2.x on headless NVIDIA GPUs (Tesla-era), including the critical NV-GLX / GLXCreateContext fixes. Versions that still work on CentOS 6 VirtualGL: 2.6.x (e.g., 2.6.5-20201117 ) — 3.x requires newer glibc. TurboVNC: 2.2.x (e.g., 2.2.90-20211222 ) — 3.x requires newer glibc and libXfont2. NVIDIA driver: 390.xx is a practical ceiling for many Fermi/Tesla cards. Enable the VirtualGL & TurboVNC repos Create two repo files (adjust baseurls if yours differ): [root@host ~]# cat >/etc/yum.repos.d/VirtualGL.repo <<'EOF' [VirtualGL] name=VirtualGL baseurl=https://virtualgl.org/pmwiki/uploads/Downloads/CentOS/6/x86_64 enabled=1 gpgcheck=0 EOF [root@host ~]# cat >/etc/yum....
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Location: Houston, TX, USA
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