CentOS 6.9 upgrade glibc 2.12 to 2.17 (qbit)

foreword

• The current date is 2022.7.6, the CentOS 6 maintenance update date is 2020.11.30, and CentOS 6 has been out of maintenance for nearly two years
• Due to various reasons, qbit needs to install Python 3.8 on CentOS 6.9 through Miniconda, and found that the version glibc is too old to install, so the test was upgraded glibc

• initial environment

   CentOS 6.9 x86_64
  glibc 2.12

Upgrade steps

• Direct installation of MiniConda3 reports an error

   $ sh Miniconda3-py38_4.12.0-Linux-x86_64.sh 
  WARNING:
    The installer is not compatible with the version of the Linux distribution
    installed on your system. The version of GLIBC is no longer supported.
    Found version 2.12, which is less than 2.17
  Aborting installation.

• Check the current glibc version

   $ ldd --version
  ldd (GNU libc) 2.12
  Copyright (C) 2010 Free Software Foundation, Inc.
  This is free software; see the source for copying conditions.  There is NO
  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  由 Roland McGrath 和 Ulrich Drepper 编写。

• Switch software repository (centos-vault source)

   curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-6.10.repo

• Generate cache

   yum makecache

• Use the script on github to upgrade glibc, the script content is as follows

   #!/bin/bash
  
  # update glibc to 2.17 for CentOS 6
  
  GLIBC=glibc
  OS=el6
  SERVER=https://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6
  VERSION=2.17-55
  FULL_VERSION=$GLIBC-$VERSION.fc20
  X64=x86_64
  I386=i386
  I636=i686
  REPO_32=epel-6-$I386
  REPO_64=epel-6-$X64
  
  SERVER_32=$SERVER/$REPO_32/$FULL_VERSION
  RPM_32=$VERSION.$OS.$I636.rpm
  SERVER_64=$SERVER/$REPO_64/$FULL_VERSION
  RPM_64=$VERSION.$OS.$X64.rpm
  
  # Packages
  P_1=$GLIBC
  P_2=$GLIBC-common
  P_3=$GLIBC-devel
  P_4=$GLIBC-headers
  P_5=$GLIBC-static
  P_6=$GLIBC-utils
  P_7=nscd
  
  # Required as dependency of glibc-utils
  sudo yum install --assumeyes gd
  
  # 64-bit
  sudo rpm -Uvh --force $SERVER_64/$P_1-$RPM_64 $SERVER_64/$P_2-$RPM_64 $SERVER_64/$P_3-$RPM_64 $SERVER_64/$P_4-$RPM_64 $SERVER_64/$P_5-$RPM_64 $SERVER_64/$P_6-$RPM_64 $SERVER_64/$P_7-$RPM_64
  # Print out versions
  strings /lib64/libc.so.6 | grep GLIBC

• Double check the current glibc version (without restarting)

   $ ldd --version
  ldd (GNU libc) 2.17
  Copyright (C) 2012 Free Software Foundation, Inc.
  This is free software; see the source for copying conditions.  There is NO
  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  Written by Roland McGrath and Ulrich Drepper.

• Install Miniconda3 normally

   $ sh Miniconda3-py38_4.12.0-Linux-x86_64.sh 
  
  Welcome to Miniconda3 py38_4.12.0
  
  In order to continue the installation process, please review the license
  agreement.
  Please, press ENTER to continue
  >>>

postscript

• After installing Miniconda, I found that pip3 cannot install the package, and it has been stuck

   $ pip3 install pipx -vvv
  Using pip 21.2.4 from /home/centos/miniconda3/lib/python3.8/site-packages/pip (python 3.8)
  Non-user install because site-packages writeable
  Created temporary directory: /tmp/pip-ephem-wheel-cache-jyavgj8d
  Created temporary directory: /tmp/pip-req-tracker-uag0fca1
  Initialized build tracking at /tmp/pip-req-tracker-uag0fca1
  Created build tracker: /tmp/pip-req-tracker-uag0fca1
  Entered build tracker: /tmp/pip-req-tracker-uag0fca1
  Created temporary directory: /tmp/pip-install-i3llrili
  Looking in indexes: https://mirrors.aliyun.com/pypi/simple/
   1 location(s) to search for versions of pipx:
   https://mirrors.aliyun.com/pypi/simple/pipx/
  Fetching project page and analyzing links: https://mirrors.aliyun.com/pypi/simple/pipx/
  Getting page https://mirrors.aliyun.com/pypi/simple/pipx/
  Found index url https://mirrors.aliyun.com/pypi/simple/
  Looking up "https://mirrors.aliyun.com/pypi/simple/pipx/" in the cache
  Request header has "max_age" as 0, cache bypassed
  Starting new HTTPS connection (1): mirrors.aliyun.com:443

• After investigation, it is found that there is a problem with Miniconda's openssl

   $ which openssl
  ~/miniconda3/bin/openssl
  $ openssl version
  OpenSSL 1.1.1n  15 Mar 2022
  $ openssl s_client mirrors.aliyun.com:443
  卡住...

• Solution one, use http warehouse instead of https warehouse

   pip3 config set global.index-url http://mirrors.aliyun.com/pypi/simple/
  pip3 config set global.trusted-host mirrors.aliyun.com

This article is from qbit snap