How to upgrade SolusVM to a new version with PHP 7.3 support?

Before the upgrade, three conditions have to be followed:
1. OS version installed on a server has to be CentOS 6 or CentOS 7.

Warning: Do not initiate the upgrade on CentOS 5 servers - it will break your SolusVM node.

2. The architecture of the node has to be 64 bit:

# arch
x86_64

3. The current software stack has to include PHP 5.6 and svmstack-nginx web server:

# php -v
PHP 5.6.30 (cli) (built: Mar 21 2017 12:59:30)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
with the ionCube PHP Loader (enabled) + Intrusion Protection from ioncube24.com (unconfigured) v6.0.9, Copyright (c) 2002-2016, by ionCube Ltd.
# service svmstack-nginx status
nginx (pid 136935) is running...

In case PHP version is different or svmstack-nginx service is not installed - proceed with switching to PHP 5.6 and installing svmstack-nginx.

Warning: CentOS 6 reached its End-Of-Life. Make sure that you have configured CentOS Vault Repository on node servers with CentOS 6. Use this article for more details

Master node upgrade:

1. Connect to Master node over SSH.

2. Update the whole SolusVM infrastructure to the latest mainline version:

   # upcp 2

3. Initiate upgrade of Master node to PHP 7.3:

   # curl -o php_updater.sh http://files.soluslabs.com/solusvmphp7/php_updater.sh && /bin/bash php_updater.sh

4. Check PHP version - it has to be 7.3:

   # php -v
   PHP 7.3.11 (cli) (built: Jan 10 2020 08:49:53) ( NTS )
   Copyright (c) 1997-2018 The PHP Group
   Zend Engine v3.3.11, Copyright (c) 1998-2018 Zend Technologies
   with the ionCube PHP Loader + ionCube24 v10.3.9, Copyright (c) 2002-2019, by ionCube Ltd.

Warning: in case SolusVM Master interface becomes unavailable - check /tmp/update.log for any error messages or contact SolusVM Technical Support.

Slave node upgrade:

• Scripted upgrade of all slave nodes:

  1. Connect to Master node over SSH.

  2. Initiate PHP 7.3 upgrade of all slave nodes with a single command:

     # upcp 4

     Warning: Even though the command will report that slave upgrade is completed - the actual upgrade will be completed in approximately 10 minutes or more.

  3. Connect to a slave node over SSH.

  4. Check PHP version - it has to be 7.3:

     # php -v
     PHP 7.3.11 (cli) (built: Jan 10 2020 08:49:53) ( NTS )
     Copyright (c) 1997-2018 The PHP Group
     Zend Engine v3.3.11, Copyright (c) 1998-2018 Zend Technologies
     with the ionCube PHP Loader + ionCube24 v10.3.9, Copyright (c) 2002-2019, by ionCube Ltd. \

• If the scripted upgrade of all nodes at once is not suitable, use Manual upgrade of each slave node separately:

  1. Connect to Slave node over SSH.

  2. Initiate PHP 7.3 upgrade of this particular node:

     # /bin/bash /usr/local/solusvm/tmp/update/php_updater.sh

  3. Check PHP version on a slave node - it has to be 7.3:

     # php -v
     PHP 7.3.11 (cli) (built: Jan 10 2020 08:49:53) ( NTS )
     Copyright (c) 1997-2018 The PHP Group
     Zend Engine v3.3.11, Copyright (c) 1998-2018 Zend Technologies
     with the ionCube PHP Loader + ionCube24 v10.3.9, Copyright (c) 2002-2019, by ionCube Ltd.

  4. Repeat for all nodes in SolusVM cluster.