Re: Aw: BUG #17647: 12.12 package has difference on ubuntu 18.04

From: Julien Rouhaud <rjuju123(at)gmail(dot)com>
To: Mike Fröhner <mikefroehner(at)gmx(dot)de>
Cc: pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: Aw: BUG #17647: 12.12 package has difference on ubuntu 18.04
Date: 2022-10-18 12:44:15
Message-ID: Y06fn/2t3y6cp5VQ@jrouhaud
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Hi,

On Tue, Oct 18, 2022 at 10:19:20AM +0200, Mike Fröhner wrote:
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> <body style="overflow-wrap:break-word; word-break: break-word;"><div class="mail_android_message" style="line-height: 1; padding: 0.5em">Hello<br/><br/>I have made some deeper investigation:<br/><br/>Steps to reproduce:<br/><br/>```<br/>docker pull ubuntu:18.04 &amp;&amp; docker run -it --rm ubuntu:18.04 bash<br/>## or<br/>docker pull ubuntu:20.04 &amp;&amp; docker run -it --rm ubuntu:20.04 bash<br/>## or<br/>docker pull ubuntu:22.04 &amp;&amp; docker run -it --rm ubuntu:22.04 bash<br/><br/><br/>apt-get update<br/>apt-get install -y vim strace less curl ca-certificates gnupg sudo lsb-release<br/><br/>curl <a href="https://www.postgresql.org/media/keys/ACCC4CF8.asc">https://www.postgresql.org/media/keys/ACCC4CF8.asc</a> | gpg --dearmor | sudo tee /etc/apt/<a href="http://trusted.gpg">trusted.gpg</a>.d/<a href="http://apt.postgresql.org.gpg">apt.postgresql.org.gpg</a> &gt;/dev/null<br/><br/>sh -c &#39;echo &quot;deb <a href="http://apt.postgresql.org/pub/repos/apt">http://apt.postgresql.org/pub/repos/apt</a> $(lsb_release -cs)-pgdg main&quot; &gt; /etc/apt/<a href="http://sources.list">sources.list</a>.d/<a href="http://pgdg.list">pgdg.list</a>&#39;<br/>apt-get update<br/>apt-get install -y postgresql-12<br/><br/>pg_ctlcluster 12 main start<br/><br/>sudo -u postgres -i<br/>psql<br/>CREATE DATABASE database_name;<br/>CREATE USER my_username WITH PASSWORD &#39;my_password&#39;;<br/>GRANT ALL PRIVILEGES ON DATABASE &quot;database_name&quot; to my_username;<br/>exit<br/><br/>echo &#39;*:*:*:my_username:my_password&#39; &gt; .pgpass<br/>chmod 0600 .pgpass<br/>exit<br/><br/>##<br/>## this does not work for ubuntu 18.04 but for ubuntu 20.04/22.04<br/>##<br/>/usr/bin/sudo -u postgres psql -U my_username -h <a href="http://127.0.0.1">127.0.0.1</a> database_name -c &quot;CREATE TABLE foo (foo char);&quot;<br/><br/>##<br/>## this works for all<br/>##<br/>sudo -u postgres -i<br/>psql -U my_username -h <a href="http://127.0.0.1">127.0.0.1</a> database_name -c &quot;CREATE TABLE foo (foo char);&quot;<br/>```<br/><br/>We have narrowed it down to three packages which have been upgraded on ubuntu 18.04 between working and broken state:<br/>- `libpq5` upgraded from `14.5-1.pgdg18.04+1` to `15.0-1.pgdg18.04+1`<br/>- `postgresql-client-common` and `postgresql-common` from `243.pgdg18.04+1` to `244.pgdg18.04+1`<br/><br/>None other packages have been upgraded (incl. ubuntu repo packages)!<br/><br/>For me it does look like a bug with in psql client package.<br/><br/>regards<br/>Mike<br/><br/>--<br/>Diese Nachricht wurde von meinem Android Mobiltelefon mit GMX Mail gesendet.</div><div class="mail_android_quote" style="line-height: 1; padding: 0.3em"><html><body>Am 17.10.22, 16:19 schrieb PG Bug reporting form &lt;noreply(at)postgresql(dot)org&gt;:</body></html><blockquote class="gmail_quote" style="margin: 0.8ex 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">

You should configure your MUA to send plaintext too and not only html, as some
people can't (and don't want to) read html-only emails. After reading it on
the html archives, I'm surprised to see that this would work at all on other
ubuntu versions, and it doesn't look like a bug in our code. sudo without -i
will look for the .pgpass in the wrong place:

# sudo -u postgres bash -c "echo \$HOME"
/root

# sudo -iu postgres bash -c "echo \$HOME"
/var/lib/postgresql

Do you get a different behavior for those commands on other ubuntu versions?

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