问题
Recently I had the problem of starting a postgresql service with custom PGDATA path. It tried to look in the default data directory (/var/lib/pgsql/9.3/data/) which was not initialized and therefore triggered these errors. It appears the problem is that the service starter on Centos 7 strips all the environment variables, including PGDATA.
Interesting thread on the issue
Is there a way to configure
service postgresql-9.3 start
to use custom environment variables? Are there configuration files for services where these variables have to be defined?
Thank you in advance!
回答1:
Thanks for the above answer, we just ran into this change today. You can also keep the default settings and only override the PGDATA variable by putting the following in /etc/systemd/system/postgresql-9.3.service:
# Include the default config:
.include /lib/systemd/system/postgresql-9.3.service
[Service]
Environment=PGDATA=<your path here>/pgsql/9.3/data
This removes the need to reintegrate changes in /usr/lib/systemd/system/postgresql-9.3.service back to your local copy.
回答2:
OK, I got a solution that worked for me.
nano /etc/systemd/system/postgresql-9.3.service
with the contents copied over from /usr/lib/systemd/system/postgresql-9.3.service and PGDATA variable changed. Then
systemctl daemon-reload
And then I started the service normally and it worked fine. The trick was making changes to this service configuration file.
来源：https://stackoverflow.com/questions/26848495/centos-7-environment-variables-for-postgres-service