Upgrading PostgreSQL from 9.4 beta1 to 9.4 beta2

MacPorts installs PostgreSQL 9.4 beta2 in the same directory as PostgreSQL 9.4 beta 1 was in. And going from beta 1 to beta 2 requires an upgrade for the cluster to work. So upgrading is more like going from 9.3 to 9.4, but with some additional (albeit minor) complications. Here’s how I upgraded.

0. Shut down existing server

sudo launchctl unload /Library/LaunchDaemons/org.macports.postgresql94-server.plist

1. Move old binary and data directories

sudo mv /opt/local/lib/postgresql94/bin /opt/local/lib/postgresql94/bin_old
sudo mv /opt/local/var/db/postgresql94/defaultdb /opt/local/var/db/postgresql94/defaultdb_old

2. Install new version of PostgreSQL

sudo port install postgresql94 +perl +python postgresql94-server

3. Set up new cluster

sudo mkdir -p /opt/local/var/db/postgresql94/defaultdb
sudo chown postgres:postgres /opt/local/var/db/postgresql94/defaultdb
sudo su postgres -c '/opt/local/lib/postgresql94/bin/initdb -D /opt/local/var/db/postgresql94/defaultdb'

My existing cluster has PL/R installed, so I need to install that too:

cd ~
wget http://www.joeconway.com/plr/plr-8.3.0.16.tar.gz
tar xzf plr-8.3.0.16.tar.gz
cd plr
R_HOME="/Library/Frameworks/R.framework/Resources" USE_PGXS=1 PG_CONFIG="/opt/local/lib/postgresql94/bin/pg_config" make
sudo R_HOME="/Library/Frameworks/R.framework/Resources" USE_PGXS=1 PG_CONFIG="/opt/local/lib/postgresql94/bin/pg_config" make install

4. Run pg_upgrade.

The upgrade routine pg_upgrade wants to be run by postgres, but needs postgres to have read-write access to the directory it is run in. So I make a directory to run it from.

cd ~
mkdir pg
sudo chown postgres:postgres pg
cd pg
sudo su postgres -c '/opt/local/lib/postgresql94/bin/pg_upgrade -b /opt/local/lib/postgresql94/bin_old -B /opt/local/lib/postgresql94/bin -d /opt/local/var/db/postgresql94/defaultdb_old -D /opt/local/var/db/postgresql94/defaultdb'

5. Get new cluster going.

sudo port select postgresql postgresql94
sudo defaults write /Library/LaunchDaemons/org.macports.postgresql94-server.plist Disabled -bool false
sudo launchctl load /Library/LaunchDaemons/org.macports.postgresql94-server.plist
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