Postgres

Развёртываем 30 контейнеров на Альт Рабочая станция 10

Обновим систему и установим docker

apt-get update

apt-get dist-upgrade

update-kernel

apt-get install docker-engine
systemctl enable --now docker

Включим ssh сервер

systemctl enable sshd
systemctl start sshd

Создадим скрипты развёртывания и уничтожения

cat /opt/create-x30-containers.sh

#!/bin/bash
rm /tmp/cred
port=54320

for i in `seq -w 1 30`; do

port=$((port+1))

docker run \
--name postgres-srv-$i \
-e POSTGRES_USER="dbuser${i}" \
-e POSTGRES_PASSWORD="dbpass${i}" \
-e POSTGRES_DB="database${i}" \
-p $port:5432 \
-d \
postgres:11
echo "psql -h localhost -p ${port} -U dbuser${i} database${i} # password=dbpass${i}" >> /tmp/cred
done

echo "Credentials: "
echo "-----"
cat /tmp/cred
echo "-----"


#install postgresql 14 client on alt workstation 10
#apt-get install postgresql14

#connect example from dockerhost
#psql -h localhost -p 54321 -U dbuser01 database01

#connect example from some host (where 172.16.228.138 -- remote address of dockerhost)
#psql -h 172.16.228.138 -p 54321 -U dbuser01 database01

cat /opt/destroy-x30-containers.sh 

#!/bin/bash
for i in `seq -w 1 30`; do
docker stop postgres-srv-$i
docker rm postgres-srv-$i
done

Примеры

Установить только клиент для postgresql 14 для Альт Рабочая станция 10 (или любого дистрибутива на базе P10)

apt-get install postgresql14

Пример подключения к базе данных непосредственно с docker хоста

psql -h localhost -p 54321 -U dbuser01 database01

далее нужно будет ввести пароль

Пример подключения к базе данных с любого хоста

Представим, что наш докерхост имеет ip адрес 172.16.228.138, тогда на машине, с которой мы собираемся подключаться, для подключения к базе данных команда будет такая:

psql -h 172.16.228.138 -p 54321 -U dbuser01 database01

далее нужно будет ввести пароль

Список из 30 хостов

psql -h localhost -p 54321 -U dbuser01 database01 # password=dbpass01
psql -h localhost -p 54322 -U dbuser02 database02 # password=dbpass02
psql -h localhost -p 54323 -U dbuser03 database03 # password=dbpass03
psql -h localhost -p 54324 -U dbuser04 database04 # password=dbpass04
psql -h localhost -p 54325 -U dbuser05 database05 # password=dbpass05
psql -h localhost -p 54326 -U dbuser06 database06 # password=dbpass06
psql -h localhost -p 54327 -U dbuser07 database07 # password=dbpass07
psql -h localhost -p 54328 -U dbuser08 database08 # password=dbpass08
psql -h localhost -p 54329 -U dbuser09 database09 # password=dbpass09
psql -h localhost -p 54330 -U dbuser10 database10 # password=dbpass10
psql -h localhost -p 54331 -U dbuser11 database11 # password=dbpass11
psql -h localhost -p 54332 -U dbuser12 database12 # password=dbpass12
psql -h localhost -p 54333 -U dbuser13 database13 # password=dbpass13
psql -h localhost -p 54334 -U dbuser14 database14 # password=dbpass14
psql -h localhost -p 54335 -U dbuser15 database15 # password=dbpass15
psql -h localhost -p 54336 -U dbuser16 database16 # password=dbpass16
psql -h localhost -p 54337 -U dbuser17 database17 # password=dbpass17
psql -h localhost -p 54338 -U dbuser18 database18 # password=dbpass18
psql -h localhost -p 54339 -U dbuser19 database19 # password=dbpass19
psql -h localhost -p 54340 -U dbuser20 database20 # password=dbpass20
psql -h localhost -p 54341 -U dbuser21 database21 # password=dbpass21
psql -h localhost -p 54342 -U dbuser22 database22 # password=dbpass22
psql -h localhost -p 54343 -U dbuser23 database23 # password=dbpass23
psql -h localhost -p 54344 -U dbuser24 database24 # password=dbpass24
psql -h localhost -p 54345 -U dbuser25 database25 # password=dbpass25
psql -h localhost -p 54346 -U dbuser26 database26 # password=dbpass26
psql -h localhost -p 54347 -U dbuser27 database27 # password=dbpass27
psql -h localhost -p 54348 -U dbuser28 database28 # password=dbpass28
psql -h localhost -p 54349 -U dbuser29 database29 # password=dbpass29
psql -h localhost -p 54350 -U dbuser30 database30 # password=dbpass30