openGauss Generating Configuration Files

Background
If a static configuration file is damaged while you use openGauss, openGauss cannot obtain information about the openGauss topology structure and primary/standby relationship, affecting the openGauss function. In this case, you can use the gs_om tool to generate a new static configuration file to replace the damaged file, ensuring normal openGauss running.

Prerequisites
None

Procedure
Log in as the OS user omm to the primary node of the database.

Run the following command to generate configuration files in a specified directory on the current host:

""
gs_om -t generateconf -X /opt/software/openGauss/clusterconfig.xml --distribute
/opt/software/openGauss/clusterconfig.xml is the XML configuration files during the openGauss installation.

NOTE:

After the command is executed, the new configuration file storage directory is displayed in the log information. Take a one-primary two-standby environment as an example. This directory contains three configuration files named by host names. You need to replace the configuration files of corresponding hosts with the three files respectively.

If –distribute is not specified, perform 3 to distribute static configuration files to their corresponding hosts. If –distribute is specified, the static configuration files are automatically distributed and you do not need to perform 3.

(Optional) Replace the damaged static configuration files of the three hosts in the /opt/gaussdb/app/bin directory.

Take one host as an example:

""
mv /opt/huawei/wisequery/script/static_config_files/cluster_static_config_SIA1000056771 /opt/gaussdb/app/bin/cluster_static_config
Examples
Run the following commands on any of the hosts in openGauss to generate configuration files:

""
gs_om -t generateconf -X /opt/software/openGauss/clusterconfig.xml --distribute
Generating static configuration files for all nodes.
Creating temp directory to store static configuration files.
Successfully created the temp directory.
Generating static configuration files.
Successfully generated static configuration files.
Static configuration files for all nodes are saved in /opt/huawei/Bigdata/mppdb/wisequery/script/static_config_files.
Distributing static configuration files to all nodes.
Successfully distributed static configuration files.
Open the generated configuration file directory that contains three new files.

""
cd /opt/huawei/Bigdata/mppdb/wisequery/script/static_config_files
ll
total 456
-rwxr-xr-x 1 omm dbgrp 155648 2016-07-13 15:51 cluster_static_config_plat1
-rwxr-xr-x 1 omm dbgrp 155648 2016-07-13 15:51 cluster_static_config_plat2
-rwxr-xr-x 1 omm dbgrp 155648 2016-07-13 15:51 cluster_static_config_plat3