How to update OS packages

• 

  Please check the latest version for CentOS/RHEL 7.4 on the web site http://mirror.centos.org/centos-7/. The below steps assume the latest version is 7.4.1708.

  • Prepare packages

    For Red Hat Enterprise Linux, if you have subscribed Red Hat Enterprise Linux, you should update package repository from Red Hat.

    For CentOS, you should prepare one CentOS 7.4 node which can access the Internet, then run the below command to create update package repository.

    centos7_4_latest_version=7.4.1708
    
    $ sudo cat << eof > /etc/yum.repos.d/centos7_4_update.repo
      [centos7_4_update]
      name=centos7_4_update
      baseurl=http://mirror.centos.org/centos/$centos7_4_latest_version/updates/x86_64/
      mirrorlist=http://mirrorlist.centos.org/?release=$centos7_4_latest_version&arch=x86_64&repo=updates
      gpgcheck=0
      enabled=1
      eof
    
    $ sudo yum -y install createrepo
    $ sudo yum -y install yum-utils
    $ sudo mkdir -p /opt/update
    $ sudo cd /opt/update
    $ sudo reposync --download-metadata -r centos7_4_update -e ./cache -n -a x86_64 -d
    $ sudo createrepo .
    $ sudo rm -rf cache
    $ sudo tar -zcf update.tgz centos7_4_update repodata
    

  • Update packages

    Run command on management node.

    $ sudo mkdir -p /install/custom/update
    

    Upload created update.tgz file to /install/custom/update of the management node. Then run the command on the management node.

    $ sudo tar -xf update.tgz -C /install/custom/update
    $ sudo cat << eof > /etc/yum.repos.d/centos7_4_update.repo
      [centos7_4_update]
      name=centos7_4_update
      baseurl= http://${sms_name}/install/custom/update
      gpgcheck=0
      enabled=1
      eof
    $ sudo xdcp all /etc/yum.repos.d/centos7_4_update.repo /etc/yum.repos.d/centos7_4_update.repo
    

    Run command on management node.

    $ sudo yum -y update
    $ sudo psh all yum -y update
    

• 

  • Prepare packages

    For SLES, you need subscribe from SUSE to get package repository.

  • Update packages

    Upload repository getting from SUSE to the /install/custom on management node. Assume the directory name of this repository is update. Then run the below command on the management node.

    $ sudo cat << eof > /etc/zypp/repos.d/sles12_3_update.repo
      [sles12_3_update]
      name= sles12_3_update
      baseurl= http://${sms_name}/install/custom/update
      gpgcheck=0
      enabled=1
      eof
    $ sudo xdcp all /etc/zypp/repos.d/sles12_3_update.repo /etc/zypp/repos.d/sles12_3_update.repo
    $ sudo zypper -y dup
    $ sudo psh all zypper -y dup