The sip:provider PRO version mr6.1.1 has the following important changes:
Please find the complete changelog in our release notes on our WEB site.
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Make sure that all the SIP domains and peering servers have the appropriate rtp_interface option (e.g. ext) selected in the NAT and Media Flow Control section. If you leave default there, incorrect network interface may be used for sending and receiving RTP traffic after the software upgrade. |
It is recommended to execute the preparatory steps in this chapter a few days before the actual software upgrade. They do not cause service downtime, so it is safe to execute them in peak hours.
Check the overall system status:
ngcp-status --all
Check the system for locally modified files (move them to appropriate customtt.tt2 files if necessary):
ngcp-status --integrity
For the below steps, investigate and make sure you understand why the custom modifications were introduced and if they are still required after the software upgrade. If the custom modifications are not required anymore, remove them (e.g. if a bug was fixed in the target release and the existing patch becomes irrelevant).
Find local changes to the template files by executing:
find /etc/ngcp-config -name \*customtt.tt2
Check if there are any *.tt2.dpkg-dist files among the templates. They usually appear when tt2 files are modified directly instead of creating customtt files. If you find any *.tt2.dpkg-dist files, treat the corresponding tt2 files as if they were customtt.tt2 and introduce the changes from the existing tt2 files into the new templates (create associated *.customtt.tt2) before the software upgrade.
Note that in the end all *.tt2.dpkg-dist files must be removed before the software upgrade as they prevent the upgrade script from updating the tt2 files.
find /etc/ngcp-config -name \*.tt2.dpkg-dist
Check/clean old dpkg backup files.
Make sure that the list is empty before you continue:
find /etc/ngcp-config -name \*.tt2.dpkg\*
Log in to both servers. Use their real IP addresses so you can switch over between the nodes later on.
Make sure the cluster status is OK: on both nodes execute:
Slave_IO_Running: Yes Slave_SQL_Running: Yes Seconds_Behind_Master: 0
Test the cluster failover to see if everything works fine on the second node as well. On the standby node execute:
ngcp-make-active
Afterwards, check monit once again: ngcp-check-active and ngcp-collective-check.
Create two test subscribers or use the credentials for existing ones. Register subscribers with the platform and perform a test call to ensure that call routing and media flow are working fine.
Run "apt-get update" and ensure that you have no warnings/errors in the output.
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If the installation uses locally specified mirrors, then the mirrors must be switched to the Sipwise APT repositories (at least for the software upgrade). Otherwise, the public Debian mirrors may not provide packages for old Releases anymore or at least provide outdated ones! |
Make sure you are prepared to spend about two hours upgrading the system. Note that a short service downtime is possible during the services switchover to the upgraded node.
The sip:provider PRO software upgrade to mr6.1.1 procedure will perform several fundamental tasks:
Assuming that you have a running sip:provider PRO system and want to upgrade it, start with the software upgrade on the standby node. Then switch the services over to the upgraded node and upgrade the other (now standby) node, as described in the steps below.
Sipwise NGCP introduces Maintenance Mode with its mr5.4.1 release. The maintenance mode of NGCP will disable some background services (for instance: mediator) during the software upgrade. It thus prevents the system from getting into an inconsistent state while the upgrade is being performed. You can activate maintenance mode by applying a simple configuration change as described later.
ngcpcfg pull
ngcpcfg set /etc/ngcp-config/config.yml "general.maintenance=yes"
ngcpcfg apply 'Enabling maintenance mode before the upgrade to mr6.1.1' ngcpcfg push all
To upgrade the sip:provider PRO to the latest mr6.1.1 release, execute the following commands on both nodes:
NGCP_CURRENT_VERSION=$(cat /etc/ngcp_version) sed -i "s/$NGCP_CURRENT_VERSION/mr6.1.1/" /etc/apt/sources.list.d/sipwise.list ngcp-approx-cache-helper --auto --node localhost apt-get update apt-get install ngcp-upgrade-pro
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Do not use "ngcpcfg apply/build" after executing the steps from the above section, as otherwise the changes will be overwritten and you will have to redo these steps. |
Execute ngcp-upgrade on the standby node as root:
ngcp-upgrade
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sip:provider PRO can be upgraded to mr6.1.1 from previous release or previous build only. The script ngcp-upgrade will find all the possible destination releases for the upgrade and allow to choose the proper one. |
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If there is an error during the upgrade, the ngcp-upgrade script will
request you to solve it. Once you’ve fixed the problem, just execute
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The upgrade script will ask you to confirm that you want to start. Read the given information carefully, and if you agree, proceed with y.
The upgrade process will take several minutes, depending on your network connection and server performance. After everything has been updated successfully, it will finally ask you to reboot your system. Confirm to let the system reboot (it will boot with an updated kernel).
Merge/add the custom configuration templates if needed. Apply the changes to configuration templates and send them to the shared storage and the other node:
ngcpcfg apply 'The first node upgraded' ngcpcfg push --nobuild --noapply
Execute on the current standby node as root:
ngcp-make-active
Go to the new standby node. Run ngcp-upgrade as root:
ngcp-upgrade
The upgrade script will ask you to confirm that you want to start. Read the given information carefully, and if you agree, proceed with y.
The upgrade process will take several minutes, depending on your network connection and server performance. After everything has been updated successfully, it will finally ask you to reboot your system. Confirm to let the system reboot (it will boot with an updated kernel).
In order to disable the maintenance mode, do the following:
ngcpcfg pull
ngcpcfg set /etc/ngcp-config/config.yml "general.maintenance=no"
ngcpcfg apply 'Disable the maintenance mode after the upgrade to mr6.1.1' ngcpcfg push all
When everything has finished successfully, check that replication is running.
Check ngcp-status --all.
Finally, do a basic functionality test.
Check the web interface, register two test subscribers and perform a test call
between them to ensure call routing works.
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You can find a backup of some important configuration files of your existing installation under /var/backup/ngcp-mr6.1.1-* (where * is a place holder for a timestamp) in case you need to roll back something at any time. A log file of the upgrade procedure is available at /var/backup/ngcp-mr6.1.1-*/upgrade.log. |
If your current release is already the latest or you prefer to be on the LTS release, we still suggest appling the latest hotfixes and critical bug fixes.
Execute all steps as described in Section 13.2, “Preparing to a Software Upgrade”. They include the system checks, customtt handling, maintenance mode enabling and others. It is important to execute all the steps from the above chapter.
Execute on the standby node as root:
ngcp-make-active
Check that the node became active in a minute (you will see ! for active):
ngcp-check-active -p
ngcp-update
Execute the final steps as described in Section 13.4, “Post-upgrade tasks”. They include maintenance mode disabling and the system checks.