postgres operational

[Steve Clark <steve.clark@xxxxxxxxxxxxx>]

Hi List,

Is there a sure fire way to tell if postgres server is up an operational. I was testing to see if the
socket at /tmp/.s.PGSQL.5432 existed - but I ran into a recent problem on CentOS 7.5, postgresql 9.2.24, where the
socket was there but my script couldn't read from my database yet.

Thanks,
Steve
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