20 lines
981 B
Bash
20 lines
981 B
Bash
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#!/bin/bash
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set -e
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if [[ $# -ne 2 ]] ; then
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echo "Usage: scripts/postgresql/switch_primary.sh <old_primary_hostname> <new_primary_hostname>"
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exit 1;
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fi
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old_primary_hostname=$1
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new_primary_hostname=$2
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new_primary_ip=`bundle exec knife node show $new_primary_hostname -a knife_zero.host | grep -E "([0-9]{1,3}[\.]){3}[0-9]{1,3}" -o`
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echo "Switching primary to $new_primary_hostname ($new_primary_ip)"
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bundle exec knife ssh name:$new_primary_hostname -a knife_zero.host "sudo su - postgres -c '/usr/lib/postgresql/12/bin/pg_ctl promote -D /var/lib/postgresql/12/main'"
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echo "Replacing pg.kosmos.local host entries with $new_primary_ip"
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bundle exec knife ssh roles:postgresql_client -a knife_zero.host "sudo sed -r \"s/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+\s(pg.kosmos.local)/$new_primary_ip\t\1/\" -i /etc/hosts"
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echo "Stopping postgresql on $old_primary_hostname"
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bundle exec knife ssh name:$old_primary_hostname -a knife_zero.host "sudo systemctl stop postgresql@12-main.service"
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