#!/bin/bash
exit 0
# https://www.citusdata.com/download/
# Run on all nodes:
curl https://install.citusdata.com/community/deb.sh | sudo bash
#sudo apt-get -y install postgresql-10-citus-7.4
sudo apt-get -y install postgresql-10-citus
# Outputs (dont run):
##############################################################################
Success. You can now start the database server using:
/usr/lib/postgresql/10/bin/pg_ctl -D /var/lib/postgresql/10/main -l logfile start
Ver Cluster Port Status Owner Data directory Log file
10 main 5432 down postgres /var/lib/postgresql/10/main /var/log/postgresql/postgresql-10-main.log
##############################################################################
# Run on all nodes
sudo pg_conftool 10 main set shared_preload_libraries citus
# set up IPs, for each node
# XXX THIS FAILS because the entry doesn't get quoted, so postgres doesn't start.
# pg1
sudo pg_conftool 10 main set listen_addresses '10.52.1.91'
# pg2
sudo pg_conftool 10 main set listen_addresses '10.52.1.92'
# pg3
sudo pg_conftool 10 main set listen_addresses '10.52.1.93'
# pg4
sudo pg_conftool 10 main set listen_addresses '10.52.1.94'
# XXX to fix, edit /etc/postgresql/10/main/postgresql.conf and change to be
# like this (note single quotes ')
# pg1
listen_addresses = '10.52.1.91' # what IP address(es) to listen on;
# pg2
listen_addresses = '10.52.1.92' # what IP address(es) to listen on;
# pg3
listen_addresses = '10.52.1.93' # what IP address(es) to listen on;
# pg4
listen_addresses = '10.52.1.94' # what IP address(es) to listen on;
# Set up access permissions file as root:
cat > /etc/postgresql/10/main/pg_hba.conf <<EOF
# IPv4 local connections
host all all 127.0.0.1/32 md5
# Database administrative login by Unix domain socket
local all postgres peer
# "local" is for Unix domain socket connections only
local all all peer
# Allow Postgres Citus Nodes XXX use password hash
host all all 10.52.1.91/32 trust
host all all 10.52.1.92/32 trust
host all all 10.52.1.93/32 trust
host all all 10.52.1.94/32 trust
# Allow Postgres Clients XXX use password hash
# ocadev2
host all all 10.52.1.195/32 trust
# ocadev3
host all all 10.52.1.196/32 trust
# ocadev4
host all all 10.52.1.197/32 trust
EOF
# make it start automatically when computer does
update-rc.d postgresql enable
# Set up firewall
vim /etc/iptables.test.rules
# add rule:
-A INPUT -s 10.52.1.0/24 -d 10.52.1.0/24 -p tcp -m tcp --dport 5432 -j ACCEPT
# Run as root:
iptables-restore < /etc/iptables.test.rules
iptables-save > /etc/iptables.up.rules
cd /etc ; git add . ; git commit -a -m 'Setup Postgres Citus Cluster'
# start the db server
sudo service postgresql restart
# Run on all nodes:
sudo -i -u postgres psql -c "CREATE EXTENSION citus;"
sudo -i -u postgres psql -c "ALTER SYSTEM SET citus.enable_statistics_collection = 'off';"
# Run on just ONE node (pg1):
# Don't add the main host node or not? XXX
#sudo -i -u postgres psql -c "SELECT * from master_add_node('10.52.1.91', 5432);"
sudo -i -u postgres psql -c "SELECT * from master_add_node('10.52.1.92', 5432);"
sudo -i -u postgres psql -c "SELECT * from master_add_node('10.52.1.93', 5432);"
sudo -i -u postgres psql -c "SELECT * from master_add_node('10.52.1.94', 5432);"
# Verify it is all good
sudo -i -u postgres psql -c "SELECT * FROM master_get_active_worker_nodes();"
# Use postgres:
sudo -i -u postgres psql
# Misc notes:
postgres=# create database foo;
NOTICE: Citus partially supports CREATE DATABASE for distributed databases
DETAIL: Citus does not propagate CREATE DATABASE command to workers
HINT: You can manually create a database and its extensions on workers.
CREATE DATABASE
#######
# OCA #
#######
# On ocadev2:
sudo -i -u postgres
# Backup database, run on ocadev2:
#pg_dump forksand > forksand-ocadev2-pg_dump.sql
pg_dump --format=custom --clean --create --no-owner forksand > forksand-ocadev2.sql
# Add "ocadev2" user to database. Run on ocadev2:
createuser --createdb --host=10.52.1.91 --username=postgres ocadev2
# NOTICE: not propagating CREATE ROLE/USER commands to worker nodes
# HINT: Connect to worker nodes directly to manually create all necessary users and roles.
# XXX
createuser --createdb --host=10.52.1.92 --username=postgres ocadev2
createuser --createdb --host=10.52.1.93 --username=postgres ocadev2
createuser --createdb --host=10.52.1.94 --username=postgres ocadev2
# Create database:
createdb --owner=ocadev2 --host=10.52.1.91 --username=postgres ocadev2_forksand
#NOTICE: Citus partially supports CREATE DATABASE for distributed databases
#DETAIL: Citus does not propagate CREATE DATABASE command to workers
#HINT: You can manually create a database and its extensions on workers.
# XXX
createdb --owner=ocadev2 --host=10.52.1.92 --username=postgres ocadev2_forksand
createdb --owner=ocadev2 --host=10.52.1.93 --username=postgres ocadev2_forksand
createdb --owner=ocadev2 --host=10.52.1.94 --username=postgres ocadev2_forksand
# Run this logged in to master pg1
# (XXX connect to other database ?)
\connect ocadev2_forksand
SET citus.shard_max_size TO '64MB';
# How many copies to distribute (just run on master node):
SET citus.shard_replication_factor TO '2';
# Upload database dump to Postgres server
# XXX not the best way, \copy ?
#cat forksand-ocadev2.sql | psql --host 10.52.1.91 --user ocadev2 ocadev2_forksand
pg_restore --format=custom --no-owner --host=10.52.1.91 --username=ocadev2 --dbname=ocadev2_forksand forksand-ocadev2.sql
# On ocadev2, using SQL dump from above:
#psql --host 10.52.1.91 --user ocadev2 ocadev2_forksand
# To connect to the master node from client node:
psql --host 10.52.1.91 --user postgres
# To connect to ocadev2 forksand database:
psql --host 10.52.1.91 --user ocadev2 ocadev2_forksand