[pgpool-general: 8465] Issue in pgpool cluster configuration in AWS enviroment

[Banashree Biswas]

TCS Confidential

Dear Team,

I am new to pgpool and trying to do an HA setup of postgresql DB using pgpool.

For this setup I have taken three RHEL 8 servers and one elastic IP. Version of postgres and pgpool is 12 and 4.2.1 respectively.

I have completed the setup till starting of primary postgres and all pgpool nodes. But when I am trying to start standby postgres nodes using recovery command mentioned in section "8.2.9.1. Set up PostgreSQL standby server", the command execution is getting stuck and not processing.

Command execution screenshot:
[cid:72501fca-6a7f-4b51-96ac-c077ac6206a6]

Log getting printed in postgres log:
Password:
Password:
Password:
Password:
Password:
Password:

Log getting printed in pgpool log:
2022-10-25 11:42:01: pid 5677: LOG:  new IPC connection received
2022-10-25 11:42:11: pid 5677: LOG:  new IPC connection received
2022-10-25 11:42:22: pid 5677: LOG:  new IPC connection received
2022-10-25 11:42:32: pid 5677: LOG:  new IPC connection received
2022-10-25 11:42:42: pid 5677: LOG:  new IPC connection received
2022-10-25 11:42:52: pid 5677: LOG:  new IPC connection received
2022-10-25 11:43:02: pid 5677: LOG:  new IPC connection received

Please suggest how to proceed with this setup.

I have followed below links for this configuration:
https://www.pgpool.net/docs/42/en/html/example-aws.html
AWS Configuration Example<https://www.pgpool.net/docs/42/en/html/example-aws.html>
8.3.4. Try it out. Start Pgpool-II on each server with "-n" switch and redirect log messages to the pgpool.log file. The log message of leader/active Pgpool-II node will show the message of Elastic IP assignment.. LOG: I am the cluster leader node. Starting escalation process LOG: escalation process started with PID:23543 LOG: watchdog: escalation started Assigning Elastic IP 35.163.178.3 to ...
www.pgpool.net
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https://www.pgpool.net/docs/42/en/html/example-cluster.html
Pgpool-II + Watchdog Setup Example<https://www.pgpool.net/docs/42/en/html/example-cluster.html>
8.2. Pgpool-II + Watchdog Setup Example. This section shows an example of streaming replication configuration using Pgpool-II.In this example, we use 3 Pgpool-II servers to manage PostgreSQL servers to create a robust cluster system and avoid the single point of failure or split brain. PostgreSQL 13 is used in this configuration example. All scripts have been tested with PostgreSQL 95 and later.
www.pgpool.net
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Thanks & Regards
Banashree Biswas
Tata Consultancy Services Limited
Mail to: banashree.biswas at tcs.com


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