CentOS Linux 7.7 released and here is how to update it.

About CentOS Linux 7.7 released.

We are pleased to announce the general availability of CentOS Linux 7 (1908) for the x86_64 architecture. Effectively immediately, this is the current release for CentOS Linux 7 and is tagged as 1908, derived from Red Hat Enterprise Linux 7.7 Source Code. Updates released since the upstream release are all posted, across all architectures. We strongly recommend every user apply all updates, including the content released today, on your existing CentOS Linux 7 machine. Many packages have received important updates. Please see the upstream document for details.

Major changes in CentOS 7.7:

• Python 3 is now available. Installing the python3 package gives you the Python 3.6 interpreter.
• bind version 9.11
• chrony version 3.4
• Since release 1503 (abrt>= 2.1.11-19.el7.centos.0.1) CentOS-7 can report bugs directly to bugs.centos.org.
• Linux kernel version 3.10.0-1062.1.1.el7.x86_64
  

  How to update to CentOS 7.6 from 7.7

  First, note down the Linux kernel version, run:

  uname -mrs

  Check CentOS Linux version in Linux command line, run:

  lsb_release -a

  OR
  hostnamectl 

  Upgrading CentOS 7.6 to 7.7

  Make sure you back up all your data, database, and configuration file before attempting upgrade procedure on CentOS Linux 7.6. You can see a list of the updates on screen, type:

   sudo yum check-update

   

  Sample outputs:

  Loaded plugins: copr   GeoIP.x86_64 1.5.0-14.el7 base NetworkManager.x86_64 1:1.18.0-5.el7_7.1 updates NetworkManager-libnm.x86_64 1:1.18.0-5.el7_7.1 updates NetworkManager-ppp.x86_64 1:1.18.0-5.el7_7.1 updates NetworkManager-team.x86_64 1:1.18.0-5.el7_7.1 updates NetworkManager-tui.x86_64 1:1.18.0-5.el7_7.1 updates NetworkManager-wifi.x86_64 1:1.18.0-5.el7_7.1 updates alsa-lib.x86_64 1.1.8-1.el7 base apr.x86_64 1.4.8-5.el7 base audit.x86_64 2.8.5-4.el7 base ... .. ... yum-cron.noarch 3.4.3-163.el7.centos base yum-plugin-copr.noarch 1.1.31-52.el7 base yum-plugin-fastestmirror.noarch 1.1.31-52.el7 base yum-utils.noarch 1.1.31-52.el7 base Obsoleting Packages python3.x86_64 3.6.8-10.el7 base python36.x86_64 3.6.8-1.el7 @epel python3-libs.x86_64 3.6.8-10.el7 base python36-libs.x86_64 3.6.8-1.el7 @epel python3-setuptools.noarch 39.2.0-10.el7 base python36-setuptools.noarch 39.2.0-3.el7 @epel

  Next, simply run the following yum command

   sudo yum update  

   

• 
  

  Reboot the CentOS 7.6 Linux machine

  Simply run any one of the following command:

   sudo shutdown -r now

   

  OR
  

  sudo reboot

  Verify upgrades from 7.6 to 7.7

  Run the following commands to see version numbers:

  uname -mrs
  lsb_release -a

  
  Make sure all services are running on CentOS Linux box:

  ps aux
  netstat -tulpn | grep LISTEN
  top
  htop

  

  Check out for errors in log file using the cat command/grep command/egrep command and other tools:

   tail -f /var/log/messages
  grep error /path/to/nginx.conf
  egrep -i 'err|warn|cri' /var/log/messages

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