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@powellc
powellc / pg_backup_all.sh
Last active October 28, 2024 06:22
Bash script to backup all postgresql databases on a server, run with cron once a day or 5 times a day, whatever. Just updated it so it ignores your postgres db, and also bzips the backups and adds a symlink to a latest directory. Sweet.
#!/bin/bash
# Location to place backups.
backup_dir="/var/backups/databases/"
nightly_dir="/var/backups/databases/latest/"
#String to append to the name of the backup files
backup_date=`date +%d-%m-%Y`
#Numbers of days you want to keep copie of your databases
number_of_days=15
databases=`psql -l -t | cut -d'|' -f1 | sed -e 's/ //g' -e '/^$/d'`
for i in $databases; do if [ "$i" != "postgres" ] && [ "$i" != "template0" ] && [ "$i" != "template1" ] && [ "$i" != "template_postgis" ]; then
@onyxraven
onyxraven / rds.sh
Last active June 21, 2022 13:42 — forked from douglasjarquin/gist:2208690
Amazon RDS Performance Tuning Settings
#XLarge DBInstanceClassMemory = 15892177440 = 14.8GB
#/32 = 496630545 = 473MB
#/64 = 248315272 = 236MB
#/128 = 124157636 = 118MB
#/256 = 62078818 = 59MB
#/512 = 31039409 = 29MB
#/12582880 = 1263 #default same divisor as max_connections = 4041.6MB = 4237924762
#/25165760 = 623 # half of max_connections = 1993.6MB
#/50331520 = 315 # quarter of max_connections = 1008MB = 1056964608
#*(3/4) #default innodb pool size = 11922309120
@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active August 13, 2025 15:56
Useful PostgreSQL Queries and Commands
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;
-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
@kfox
kfox / sysctl.conf
Created February 29, 2012 17:32
Linux kernel tuning settings for large number of concurrent clients
# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.
# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0