Operating system upgrades on PostgreSQL nodes using streaming replication

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To: pgsql-admin@xxxxxxxxxxxxxxxxxxxx
Subject: Operating system upgrades on PostgreSQL nodes using streaming replication
From: Rahat Agivetova <rahat@xxxxxxxxx>
Date: Wed, 8 Nov 2023 12:29:36 +0000
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0

Hi All,

We are planning to upgrade the operating system from Centos 7 on Primaryand Standby PostgreSQL nodes that use streaming replication to RHEL 8.What is the recommended order to upgrade OS from Centos 7 to RHEL 8?Standby first, then Primary? Can there be a small time gap between theupgrades or not?


Thanks,
Rahat

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