Progress Sonic 8.5 Installation and Upgrade Guide - Product ...

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Chapter 8: Upgrading from 7.5 or 7.6 to 8.5 Zero-Downtime Upgrades of 7.5 and 7.6 Clusters and Replicated Brokers In version 7, upgrades could not be applied to a running cluster or replicated brokers. You had to stop all the brokers, then upgrade them as a unit. For clustered brokers, it meant that the entire node was out briefly, all the configurations were forced to upgrade, and that the node did not return to full force until all the member broker installations had been upgraded. For replicated brokers, it meant that the peers were both offline until they were both upgraded. In version 8, the Launcher installed on every system that runs components in the domain means that administrators will never have to run upgrade software on each system ever again. The Domain Manager is where the upgrade takes place. Then, the Domain Manager provisions the remote systems with the upgraded software. The transition from version 7 to version 8 does require installation of the 8.5 Launcher on each system to establish participation in the new paradigm. And it does require running some scripted tasks to complete the change for each container, hosted component, and data store. Sonic 8.5 simplifies the upgrade of clusters and replicated brokers by enabling a Sonic 8.5 domain to tolerate both version 7 and version 8 brokers cooperating in different versions. You install a Launcher on a system where a broker member is running, extract its configuration from the domain, and then run a smart upgrade that stops the version 7 broker at the moment when it needs perform database actions, and then restarts the broker as a 8.5 container. That provides administrators with a resilient non-stop topology that can be fully upgraded from version 7 to 8.5 at a more measured pace. You don’t have to have administrators all dispersed at systems that host participating cluster members or replicated peers, trying to orchestrate a simultaneous upgrade event. The upgrade functions on distributed hosts require that the Domain Manager has been upgraded to 8.5. Administrative tools must also be Version 8 to monitor the Domain but have no actual role in the upgrade process. The upgrade process first connects to the 8.5 Domain Manager to extract the 7.5 or 7.6 configuration, and then to upgrade the configuration and provision the 8.5 installation location with the appropriate 8.5 functionality. 206 Progress Sonic Installation and Upgrade Guide 8.5
Zero-Downtime Upgrades of 7.5 and 7.6 Clusters and Replicated Brokers Upgrading a Cluster of Brokers A cluster is a configuration object that enables multiple brokers in a domain to act as a single node, providing load balancing and—through sophisticated interbroker connections—to provide clusterwide messaging functions. The following illustration shows three brokers in a cluster. The upgrade tasks are the same for any non Domain Manager installation (as described “Sequence of 7.5 and 7.6 to 8.5 Component Upgrade Tasks” on page 196). The flow through the cluster members is the point of interest. ◆ To upgrade a Version 7 cluster and its members to Version 8: 1. In the Sonic Management Console, review the cluster to see that the member brokers are running and performing as expected. 2. Choose a system that hosts a running cluster member to upgrade it. 3. Perform the upgrade tasks: a. Install the Sonic 8.5 Container Launcher b. Extract the broker’s container’s properties. c. Enter the 8.5 SonicMQ license in the upgrade.properties file. d. Specify the working directory if the Version 7 data store and log locations are relative paths. e. Run the upgrade. When the broker comes back online, that broker is Version 8 and the cluster is Version 8, while the other members are still Version 7. Do not use any features introduced in Version 8 until all the cluster members have been upgraded. 4. Access, in turn, the system of each of the cluster members that are Version 7, and then perform the upgrade tasks. When all the members have been upgraded, the cluster is fully upgraded, and can perform Version 8 functions. Progress Sonic Installation and Upgrade Guide 8.5 207
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products derived from this software
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Contents Chapter 2: Using Progress
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Contents Chapter 7: Upgrading Versi
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Contents 16 Progress Sonic Installa
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Preface About This Guide This guide
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Preface Progress Sonic Documentatio
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Preface ● Progress SonicMQ C++ Cl
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Preface 24 Progress Sonic Installat
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Chapter 1: Overview of Installation
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