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ma7dy / postgresql_cheat_sheet.sql
Last active December 26, 2024 13:07 — forked from krisiye/postgresql_cheat_sheet.sql
Useful queries for postgresql for monitoring queries and disk usage
-- Temporary file usage by database
SELECT datname AS "database", temp_files AS "Temporary files", temp_bytes
AS "Size of temporary files"
FROM pg_stat_database;
-- Cache Hit Ratio. Anything greater than 90% is always good
SELECT sum(blks_hit)*100/sum(blks_hit+blks_read) AS hit_ratio FROM pg_stat_database;
-- Top Queries
SELECT substr(query, 0, 250), calls,
ssh admin@nas
/etc/init.d/services.sh stop
/etc/init.d/xdove.sh stop
# See if there are still files open on the disk:
lsof |grep /share/MD0_DATA
# Kill the open processes if any.
#!/bin/sh
#
# Amazon EC2 user-data file for automatic configuration of IPsec/L2TP VPN
# on a Ubuntu server instance. Tested with 14.04 (Trusty) AND 12.04 (Precise).
#
# DO NOT RUN THIS SCRIPT ON YOUR PC OR MAC! THIS IS MEANT TO BE RUN WHEN
# YOUR AMAZON EC2 INSTANCE STARTS!
#
# Copyright (C) 2014 Lin Song
# Based on the work of Thomas Sarlandie (Copyright 2012)
#!/bin/bash -x
# Description:L2TP/IPsec for CentOS 6.5 64bit
# 2014/01/06 @ysaotome
(
### setting
/bin/cat << _SECRETS_ > /tmp/SECRETS_TMP.txt
#==============================================
# username auth_server password auth_ipaddress
"hoge001" "xl2tpd" "hoge##123" *