This Howto explains the upgrade to PostgreSQL 15 on FreeBSD 13.
IMPORTANT: First take a snapshot of the virtual machine or save the entire server.
pkg info | grep sql
postgresql14-client-14.5 PostgreSQL database (client) postgresql14-server-14.5 PostgreSQL is the most advanced open-source database available anywhere
/usr/local/bin/psql -U postgresql -d dbname -t --command "show server_version"
pg_config
BINDIR = /usr/local/bin DOCDIR = /usr/local/share/doc/postgresql HTMLDIR = /usr/local/share/doc/postgresql INCLUDEDIR = /usr/local/include PKGINCLUDEDIR = /usr/local/include/postgresql INCLUDEDIR-SERVER = /usr/local/include/postgresql/server LIBDIR = /usr/local/lib PKGLIBDIR = /usr/local/lib/postgresql LOCALEDIR = /usr/local/share/locale MANDIR = /usr/local/man SHAREDIR = /usr/local/share/postgresql SYSCONFDIR = /usr/local/etc/postgresql PGXS = /usr/local/lib/postgresql/pgxs/src/makefiles/pgxs.mk CONFIGURE = '--with-libraries=/usr/local/lib' '--with-includes=/usr/local/include' '--enable-thread-safety' '--disable-debug' '--without-gssapi' '--enable-nls' '--without-pam' '--with-openssl' '--prefix=/usr/local' '--localstatedir=/var' '--mandir=/usr/local/man' '--infodir=/usr/local/share/info/' '--build=amd64-portbld-freebsd13.0' 'build_alias=amd64-portbld-freebsd13.0' 'CC=cc' CFLAGS=-O2 -pipe -fstack-protector-strong -fno-strict-aliasing ' LDFLAGS= -L/usr/local/lib -lpthread -L/usr/local/lib -fstack-protector-strong ' LIBS=' 'CPPFLAGS=-I/usr/local/include' CXX=c++' 'CXXFLAGS=-O2 -pipe -fstack-protector-strong -fno-strict-aliasing ' CPP=cpp' 'PKG_CONFIG=pkgconf' 'PKG_CONFIG_LIBDIR=/wrkdirs/usr/ports/databases/postgresql14-client/work/.pkgconfig:/usr/local/libdata/pkgconfig:/usr/local/share/pkgconfig:/usr/libdata/pkgconfig' 'LDFLAGS_SL=' CC = cc VERSION = PostgreSQL 14.5
/usr/local/bin/psql -U postgresql -d wnk2022 -l
                              List of databases
   Name    |  Owner   | Encoding | Collate |  Ctype  |   Access privileges   
-----------+----------+----------+---------+---------+-----------------------
 wnk2022   | postgres | UTF8     | C       | C.UTF-8 | 
 postgres  | postgres | UTF8     | C       | C.UTF-8 | 
 template0 | postgres | UTF8     | C       | C.UTF-8 | =c/postgres          +
           |          |          |         |         | postgres=CTc/postgres
 template1 | postgres | UTF8     | C       | C.UTF-8 | =c/postgres          +
           |          |          |         |         | postgres=CTc/postgres
/usr/local/bin/pg_dump --create --encoding=UTF8 --column-inserts --dbname=wnk2022 --format=p --inserts --username=postgres  --file=/usr/local/www/wnk20221014.sql
ls -altr /usr/local/www/*.sql 
-rw-r--r-- 1 root wheel 122116150 Oct 14 10:57 /usr/local/www/wnk20221014.sql
Postgresql Data Dir: /var/db/postgres/data14/
service postgresql stop
pkg delete -fy postgresql14-server-14.5; pkg delete -fy postgresql14-client-14.5 
Checking integrity... done (0 conflicting)
Deinstallation has been requested for the following 1 packages (of 0 packages in the universe):
Installed packages to be REMOVED:
        postgresql14-server: 14.5
Number of packages to be removed: 1
The operation will free 43 MiB.
[1/1] Deinstalling postgresql14-server-14.5...
[1/1] Deleting files for postgresql14-server-14.5: 100%
==> You should manually remove the "postgres" user. 
==> You should manually remove the "postgres" group 
Checking integrity... done (0 conflicting)
Deinstallation has been requested for the following 1 packages (of 0 packages in the universe):
Installed packages to be REMOVED:
        postgresql14-client: 14.5
Number of packages to be removed: 1
The operation will free 13 MiB.
[1/1] Deinstalling postgresql14-client-14.5...
[1/1] Deleting files for postgresql14-client-14.5: 100%
pkg install postgresql15-server
The following 2 package(s) will be affected (of 0 checked):
New packages to be INSTALLED:
        postgresql15-client: 15.0
        postgresql15-server: 15.0
Number of packages to be installed: 2
The process will require 57 MiB more space.
17 MiB to be downloaded.
Proceed with this action? [y/N]
[1/2] Fetching postgresql15-server-15.0.pkg: 100%   14 MiB  14.3MB/s    00:01    
[2/2] Fetching postgresql15-client-15.0.pkg: 100%    3 MiB   3.0MB/s    00:01    
Checking integrity... done (0 conflicting)
[1/2] Installing postgresql15-client-15.0...
[1/2] Extracting postgresql15-client-15.0: 100%
[2/2] Installing postgresql15-server-15.0...
=> Creating groups.
Using existing group 'postgres'.
=> Creating users
Using existing user 'postgres'.
=> Creating homedir(s)
  = BACKUP YOUR DATA! =
  As always, backup your data before
  upgrading. If the upgrade leads to a higher
  major revision (e.g. 9.6 -> 10), a dump
  and restore of all databases is
  required. This is *NOT* done by the port!
  See https://www.postgresql.org/docs/current/upgrading.html
  =======
[2/2] Extracting postgresql15-server-15.0: 100%
=====
Message from postgresql15-client-15.0:
--
The PostgreSQL port has a collection of "side orders":
postgresql-docs
  For all of the html documentation
p5-Pg
  A perl5 API for client access to PostgreSQL databases.
postgresql-tcltk
  If you want tcl/tk client support.
postgresql-jdbc
  For Java JDBC support.
postgresql-odbc
  For client access from unix applications using ODBC as access
  method. Not needed to access unix PostgreSQL servers from Win32
  using ODBC. See below.
ruby-postgres, py-psycopg2
  For client access to PostgreSQL databases using the ruby & python
  languages.
postgresql-plperl, postgresql-pltcl & postgresql-plruby
  For using perl5, tcl & ruby as procedural languages.
postgresql-contrib
  Lots of contributed utilities, postgresql functions and
  datatypes. There you find pg_standby, pgcrypto and many other cool
  things.
etc...
==
Message from postgresql15-server-15.0:
--
For procedural languages and postgresql functions, please note that
you might have to update them when updating the server.
If you have many tables and many clients running, consider raising
kern.maxfiles using sysctl(8), or reconfigure your kernel
appropriately.
The port is set up to use autovacuum for new databases, but you might
also want to vacuum and perhaps backup your database regularly. There
is a periodic script, /usr/local/etc/periodic/daily/502.pgsql, that
you may find useful. You can use it to backup and perform vacuum on all
databases nightly. Per default, it performs `vacuum analyze'. See the
script for instructions. For autovacuum settings, please review
~postgres/data/postgresql.conf.
Please note that if you use the rc script,
/usr/local/etc/rc.d/postgresql, to initialize the database, unicode
(UTF-8) will be used to store character data by default.  Set
postgresql_initdb_flags or use login.conf settings described below to
alter this behaviour. See the start rc script for more info.
To set limits, environment stuff like locale and collation and other
things, you can set up a class in /etc/login.conf before initializing
the database. Add something similar to this to /etc/login.conf:
---
postgres:\
        :lang=en_US.UTF-8:\
        :setenv=LC_COLLATE=C:\
        :tc=default:
---
and run `cap_mkdb /etc/login.conf'.
Then add 'postgresql_class="postgres"' to /etc/rc.conf.
To initialize the database, run
  /usr/local/etc/rc.d/postgresql initdb
You can then start PostgreSQL by running:
  /usr/local/etc/rc.d/postgresql start
For postmaster settings, see ~postgres/data/postgresql.conf
NB. FreeBSD's PostgreSQL port logs to syslog by default
    See ~postgres/data/postgresql.conf for more info
NB. If you're not using a checksumming filesystem like ZFS, you might
    wish to enable data checksumming. It can be enabled during
    the initdb phase, by adding the "--data-checksums" flag to
    the postgresql_initdb_flags rcvar. Otherwise you can enable it later by
    pg_checksums.  Check the initdb(1) manpage for more info
    and make sure you understand the performance implications.
======================================================================
To run PostgreSQL at startup, add
'postgresql_enable="YES"' to /etc/rc.conf
/usr/local/etc/rc.d/postgresql initdb
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.
The database cluster will be initialized with this locale configuration:
  provider:    libc
  LC_COLLATE:  C
  LC_CTYPE:    C.UTF-8
  LC_MESSAGES: C.UTF-8
  LC_MONETARY: C.UTF-8
  LC_NUMERIC:  C.UTF-8
  LC_TIME:     C.UTF-8
The default text search configuration will be set to "english".
Data page checksums are disabled.
creating directory /var/db/postgres/data15 ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... UTC
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok
initdb: warning: enabling "trust" authentication for local connections
initdb: hint: You can change this by editing pg_hba.conf or using the option -A, or --auth-local and --auth-host, the next time you run initdb.
Success. You can now start the database server using:
    /usr/local/bin/pg_ctl -D /var/db/postgres/data15 -l logfile start
 su - postgres
/usr/local/bin/pg_ctl -D /var/db/postgres/data15 -l logfile start
psql
created user abc password 'abc';
psql -U postgres -f /usr/local/www/db2105_20221023_1632.sql > /usr/local/www/db2210load.txt
Published: Oct. 23, 2022
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