Aaron Johnon
4 years ago
commit
1a40e98b5f
@ -0,0 +1,7 @@
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HEADER="HTTP/S Checker" #Header for the start of outgoing messages from the bot
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CHATID="5555555" #Chat ID for the Telegram room/conversation with bot
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KEY="THISISAUNIQUEANDPRIVATEKEY" #Your bot's API key
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CHKLIST="${HOME}/.site_check" #A file containing a list of sites/URLs to check
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DB="/tmp/.httpcheck.sqlite" #Location of SQLite3 database
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MAX_COUNT=10 #Max number of 'count' before alert becomes true
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@ -0,0 +1,183 @@
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#!/bin/sh
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PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
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CONFIG=$1
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#Alias DB command for easy future adjustments
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SQL='sqlite3'
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alias sql="$SQL"
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# Check for dependencies
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if ! which $SQL >/dev/null 2>&1; then
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printf '%s\n' "ERROR 12: Missing dependency -- '$SQL' command not found." >&2
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exit 12
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fi
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if ! which curl >/dev/null 2>&1; then
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printf '%s\n' "ERROR 12: Missing dependency -- 'curl' command not found." >&2
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exit 12
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fi
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# BEGIN CONFIG CHECK
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### Provides KEY, CHATID, CHKLIST
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if [ -n "$CONFIG" ]; then
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if [ -f "$CONFIG" ]; then
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. $CONFIG #Source config file
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else
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printf '%s\n' "$CONFIG: File does not exist." >&2
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exit 10
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fi
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else
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if [ -f ".httpcheck_telegram" ]; then
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. .httpcheck_telegram #Source config file
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else
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printf '%s\n' "No configuration file found." >&2
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exit 10
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fi
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fi
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# Check if config was loaded by examining all configuration variables, exit if not
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if [ -z "$KEY" ]; then
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printf '%s\n' "Configuration not set correctly: KEY not set" >&2
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ERROR11=true
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fi
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if [ -z "$CHATID" ]; then
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printf '%s\n' "Configuration not set correctly: CHATID not set" >&2
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ERROR11=true
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fi
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if [ -z "$CHKLIST" ]; then
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printf '%s\n' "Configuration not set correctly: CHKLIST not set" >&2
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ERROR11=true
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fi
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if [ -z "$DB" ]; then
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printf '%s\n' "Configuration not set correctly: DB not set" >&2
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ERROR11=true
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fi
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if [ -z "$MAX_COUNT" ]; then
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printf '%s\n' "Configuration not set correctly: MAX_COUNT not set" >&2
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ERROR11=true
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fi
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[ "$ERROR11" = "true" ] && exit 11
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# END CONFIG CHECK
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#DB functions
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db_create() {
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sql $DB "CREATE TABLE problem (
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site TEXT UNIQUE NOT NULL,
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count INT NOT NULL DEFAULT 0,
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alert INT NOT NULL DEFAULT 0,
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sent INT NOT NULL DEFAULT 0
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);"
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}
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db_addsite() {
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sql $DB "INSERT OR IGNORE INTO problem (site) VALUES('$1');"
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}
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db_inc() {
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sql $DB "UPDATE problem SET count = count + 1 WHERE site = '$1' AND count < $MAX_COUNT;"
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if [ $(sql $DB "SELECT count FROM problem WHERE site = '$1';") -ge $MAX_COUNT ]; then
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sql $DB "UPDATE problem SET alert = 1 WHERE site = '$1';"
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fi
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}
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db_dec() {
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sql $DB "UPDATE problem SET count = count - 1 WHERE site = '$1' AND count > 0;"
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if [ $(sql $DB "SELECT count FROM problem WHERE site = '$1';") -le 0 ]; then
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sql $DB "UPDATE problem SET alert = 0 WHERE site = '$1';"
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fi
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}
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TIME="10"
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URL="https://api.telegram.org/bot$KEY/sendMessage"
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#Telegram message function
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send_message() {
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curl -s --max-time $TIME -d "chat_id=${CHATID}&disable_web_page_preview=1&text=$1" $URL >/dev/null
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}
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get_http_code() {
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if host $(printf '%s\n' $1 | awk '{gsub("https?://|/.*","")}1') 2>&1 >/dev/null; then
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curl -sILk --max-time $TIME $1 | grep HTTP | tail -n 1 | grep -Eo '[0-9]{3}' || printf '%s\n' 999
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else
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printf '%s\n' 000
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fi
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}
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print_time() {
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date '+%Y-%m-%d %H:%M:%S'
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}
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# Prepare message header
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#MSG="${HEADER}%0AProblems Found:"
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FAILURE=false
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# Create database if it doesn't exist
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if [ -f $DB ]; then
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printf '%s\n' "Database found: $DB"
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else
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printf '%s' "Database not found at '$DB'\nCreating DB ... "
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if db_create; then
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printf '%s\n' "DONE"
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else
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printf '%s\n' "FAILED"
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printf '%s\n' "Database creation failed!" >&2
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exit 13
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fi
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fi
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# Check HTTP codes
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for site in $(grep -v "^#\|^$" $CHKLIST | sort | uniq); do
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db_addsite $site
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respcode=$(get_http_code $site)
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case $respcode in
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000)
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printf '%s\n' "[$(print_time)]: PROBLEM -- $site: DNS record not found" >&2
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db_inc $site
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#MSG="${MSG}%0A%0A %2B ${site}%0A DNS record not found"
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#FAILURE=true
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;;
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200)
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printf '%s\n' "[$(print_time)]: OK -- $site returns $respcode"
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db_dec $site
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;;
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999)
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printf '%s\n' "[$(print_time)]: PROBLEM -- $site caused general cURL failure" >&2
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db_inc $site
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;;
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*)
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printf '%s\n' "[$(print_time)]: PROBLEM -- $site returns $respcode" >&2
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db_inc $site
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#MSG="${MSG}%0A%0A %2B ${site}%0A Responding ${respcode}"
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#FAILURE=true
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;;
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esac
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done || exit 2
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### # Send compiled message if any problems were found
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### if [ "$FAILURE" = "true" ]; then
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### send_message "$MSG" && printf '%s\n' "Problems found. Message sent via Telegram bot" >&2 || printf '%s\n' "Problems found. Message sending has failed"
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### fi
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# Find down sites without sent alerts
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unsent=$(sql $DB "SELECT count(*) FROM problem WHERE alert = 1 AND sent = 0;")
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cleared=$(sql $DB "SELECT count(*) FROM problem WHERE alert = 0 AND sent = 1;")
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down=$(sql $DB "SELECT count(*) FROM problem WHERE alert = 1;")
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downlist=$(sql $DB "SELECT site FROM problem WHERE alert = 1;" | perl -p -e 's/\n/%0A/g')
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# If ANY sites have unsent alerts, send a list of ALL sites in 'alert' state
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if [ $unsent -gt 0 ]; then
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ALERT="${HEADER}%0ASites Down:%0A${downlist}"
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send_message "$ALERT" && printf '%s\n' "Problems found. Message sent via Telegram bot" >&2 || printf '%s\n' "Problems found. Message sending has failed"
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sql $DB "UPDATE problem SET sent = 1 WHERE sent = 0 AND alert = 1;" #Prevents resending messages
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fi
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# If ALL sites have cleared alerts, send an all-clear
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if [ $cleared -gt 0 ]; then
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clearlist=$(sql $DB "SELECT site FROM problem WHERE alert = 0 AND sent = 1;" | perl -p -e 's/\n/%0A/g')
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CLEARED="${HEADER}%0AThese HTTP alerts have cleared:%0A${clearlist}"
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if [ $down -gt 0 ]; then
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CLEARED="${CLEARED}%0ASites still down:%0A${downlist}"
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fi
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send_message "$CLEARED" && printf '%s\n' "A site's alert status has cleared. Message sent via Telegram bot" >&2 || printf '%s\n' "A site's alert status has cleared. Message sending has failed"
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sql $DB "UPDATE problem SET sent = 0 WHERE sent = 1 AND alert = 0;" #Prevents resending messages
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fi
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exit 0
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@ -0,0 +1,149 @@
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#!/usr/bin/env sh
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# Usage:
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# postgres_backup.sh [man] //Manual backup, full output
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# postgres_backup.sh auto //Auto backup (separate backup location, only outputs STDERR messages)
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# CONFIG
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### Example Config File ############
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###
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### PORT=5432
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### DIR=/var/lib/pgsql/backup
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### COMPRESSION=zstd
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### COMP_LEVEL=14
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### THREADS=2
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###
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####################################
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#
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# Load config file:
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if [ ! -f ${HOME}/.postgres_backup.conf ]; then
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echo "ERROR 10: Configuration file not found"
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exit 10
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fi
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source ${HOME}/.postgres_backup.conf
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## Check if automated, set appropriate directory
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if [ "$1" = "auto" ]; then
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AUTO="true"
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DIR=${DIR}/auto
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else
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AUTO="false"
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DIR=${DIR}/manual
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fi
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## Define message commands
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msg_show() {
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[ "$AUTO" = "false" ] && printf "$1"
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}
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msg_check() {
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[ "$AUTO" = "false" ] && printf '%-70s %s' "$1" # | sed s/\ \ /../g
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}
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get_size() {
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tsize=$(find $1 -prune -printf '%s\n')
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[ $tsize -lt 1024 ] && tsize="$tsize B" || tsize=$(numfmt --to=iec-i --suffix=B --format='%.3f' <<<$tsize | sed -r 's/([A-Z])/ \1/')
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printf "$tsize"
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}
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## Sanity check
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pass="$(tput bold)$(tput setaf 2)OK$(tput sgr0)\n"
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fail="$(tput bold)$(tput setaf 1)FAIL$(tput sgr0)\n"
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msg_show "=== $(tput bold)Config Sanity Check$(tput sgr0)\n"
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msg_check "PostgreSQL server port: $(tput bold)${PORT}$(tput sgr0)"
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if [ $PORT -lt 65536 -a $PORT -gt 0 ] 2>/dev/null; then
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msg_show "$pass"
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else
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msg_show "$fail"
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echo "ERROR 11: PORT configuration not a valid port number" >&2
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exit 11
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fi
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msg_check "Backup directory: $(tput bold)${DIR}$(tput sgr0)"
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if [ -d "$DIR" ]; then
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msg_show "$pass"
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else
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msg_show "$fail"
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echo "ERROR 12: Backup directory does not exist" >&2
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exit 12
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fi
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msg_check "Compression type: $(tput bold)${COMPRESSION}$(tput sgr0)"
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case $COMPRESSION in
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xz)
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msg_show "$pass"
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msg_check "Compression level: $(tput bold)${COMP_LEVEL}$(tput sgr0)"
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if [ $(sed s/e// <<< $COMP_LEVEL) -lt 10 -a $(sed s/e// <<< $COMP_LEVEL) -gt 0 ] 2>/dev/null; then
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msg_show "$pass"
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else
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msg_show "$fail"
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echo "ERROR 14: Compression level not valid" >&2
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exit 14
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fi
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;;
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zstd)
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msg_show "$pass"
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msg_check "Compression level: $(tput bold)${COMP_LEVEL}$(tput sgr0)"
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if [ $COMP_LEVEL -lt 20 -a $COMP_LEVEL -gt 0 ] 2>/dev/null; then
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msg_show "$pass"
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else
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msg_show "$fail"
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echo "ERROR 14: Compression level not valid" >&2
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exit 14
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fi
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;;
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*)
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msg_show "$fail"
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echo "ERROR 13: Compression not configured correctly" >&2
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exit 13
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;;
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esac
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msg_check "Thread count: $(tput bold)${THREADS}$(tput sgr0)"
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if [ $THREADS -eq $THREADS -a $THREADS -gt -1 ] 2>/dev/null; then
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msg_show "$pass"
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[ $THREADS -gt $(nproc) ] 2>/dev/null && msg_show "$(tput setaf 3)$(tput bold)WARN:$(tput sgr0) THREADS is set higher than CPU count!\n"
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else
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msg_show "$fail"
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echo "ERROR 15: Thread count is not a valid positive integer" >&2
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exit 15
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fi
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## End sanity check
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## Set date for timestamp
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DATE=$(date +%Y%m%d-%H%M)
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msg_show "Timestamp set to $(tput bold)${DATE}$(tput sgr0)\n"
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## Get list of DBs
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list_db=$(psql -p${PORT} -U postgres -t -c 'select datname from pg_database;' | grep -v 'template0\|template1\|postgres' | sed '/^$/d')
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## Set compression parameters
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case $COMPRESSION in
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xz)
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compress="xz -T${THREADS} -${COMP_LEVEL} -"
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comp_ext="xz"
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;;
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zstd)
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compress="zstd -T${THREADS} -${COMP_LEVEL} -z -"
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comp_ext="zst"
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;;
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*)
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echo "ERROR 13: Compression not configured correctly!" >&2
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exit 13
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||||||
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;;
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|
esac
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msg_show "\nStarting backup procedures...\n\n"
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||||||
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||||||
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## Backup globals
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||||||
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target="${DIR}/globals_${DATE}.dmp.${comp_ext}"
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pg_dumpall -p${PORT} -g | eval $compress > ${DIR}/globals_${DATE}.dmp.${comp_ext}
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msg_show "Backed up $(tput setaf 2)$(tput bold)globals$(tput sgr0) as $(tput setaf 3)${target}$(tput sgr0) [$(tput setaf 2)$(get_size $target)$(tput sgr0)] using $(tput bold)${compress}$(tput sgr0)\n"
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for db in $list_db; do
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target="${DIR}/${db}_${DATE}.dmp.${comp_ext}"
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pg_dump -O $db | eval $compress > $target
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msg_show "Backed up $(tput setaf 2)$(tput bold)${db}$(tput sgr0) as $(tput setaf 3)${target}$(tput sgr0) [$(tput setaf 2)$(get_size $target)$(tput sgr0)] using $(tput bold)${compress}$(tput sgr0)\n"
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||||||
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done
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||||||
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exit 0
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@ -0,0 +1,107 @@
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#!/usr/bin/env sh
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#Author: Aaron Johnson
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#Comment: This script is not intended to be portable or fail-safe, and is used in my personal provisioning process.
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||||||
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name_old=$(cat /etc/hostname)
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#Below command preserved in case it is needed to add older OS support
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||||||
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#ipadd_old=$(ifconfig | awk '/inet6/{next;} /127.0.0.1/{next;} /inet/{print $2;}' | grep 172.23)
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||||||
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cidr_old=$(ip a | awk '/inet6/{next;} /127.0.0.1/{next;} /inet/{print $2;}' | grep 172.23)
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||||||
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ipadd_old=$(echo $cidr_old | awk -F '/' '{print $1}')
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||||||
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ipc_present=false
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||||||
|
|
||||||
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# Get user input
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||||||
|
echo "Enter new host information."
|
||||||
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read -p "Hostname [$name_old]: " name
|
||||||
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read -p "IP address (CIDR format) [$cidr_old]: " cidr
|
||||||
|
# Input sanity check
|
||||||
|
if [ -z "$name" ]; then
|
||||||
|
name=$name_old
|
||||||
|
fi
|
||||||
|
if [ -z "$cidr" ]; then
|
||||||
|
cidr=$cidr_old
|
||||||
|
fi
|
||||||
|
## Validate CIDR
|
||||||
|
n='([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])'
|
||||||
|
m='([0-9]|[12][0-9]|3[012])'
|
||||||
|
if ! echo $cidr | grep -E "^$n(\.$n){3}/$m$" &>/dev/null; then
|
||||||
|
printf "\nCIDR input is not valid!\n"
|
||||||
|
exit 12
|
||||||
|
fi
|
||||||
|
# End input sanity check
|
||||||
|
|
||||||
|
# Test if 'ipcalc' utility is available
|
||||||
|
which ipcalc &>/dev/null && ipc_present=true
|
||||||
|
|
||||||
|
ipadd=$(echo $cidr | awk -F '/' '{print $1}')
|
||||||
|
echo
|
||||||
|
printf "Review these changes carefully!\n\n"
|
||||||
|
if [ "$ipc_present" = true ]; then
|
||||||
|
snm=$(ipcalc $cidr | grep Netmask | grep -Eo "($n.){3}$n")
|
||||||
|
snm_old=$(ipcalc $cidr_old | grep Netmask | grep -Eo "($n.){3}$n")
|
||||||
|
printf "+,CURRENT,PENDING\nHostname:,$name_old,$name\nAddress:,$ipadd_old,$ipadd\nCIDR:,$cidr_old,$cidr\nNetmask:,$snm_old,$snm" | column -s, -t
|
||||||
|
else
|
||||||
|
printf "+,CURRENT,PENDING\nHostname:,$name_old,$name\nAddress:,$ipadd_old,$ipadd\nCIDR:,$cidr_old,$cidr" | column -s, -t
|
||||||
|
fi
|
||||||
|
echo
|
||||||
|
read -p "Are you sure you want to apply the changes above? (y/N)" -n 1 -r
|
||||||
|
if echo $REPLY | grep -Eq '^[Yy]$'; then
|
||||||
|
printf "\n Continuing...\n\n"
|
||||||
|
else
|
||||||
|
printf "\n ABORT\n"
|
||||||
|
exit 13
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Update /etc/hostname
|
||||||
|
printf "Update hostname... "
|
||||||
|
echo $name > /etc/hostname && printf "DONE\n" || exit 1
|
||||||
|
|
||||||
|
# Update /etc/hosts
|
||||||
|
printf "Update /etc/hosts... "
|
||||||
|
sed -i "/^127.0.0.1/s/.*/127.0.0.1\tlocalhost localhost.localdomain/" /etc/hosts && \
|
||||||
|
sed -i "/^127.0.1.1/s/.*/127.0.1.1\t$(echo $name | awk -F . '{print $1}') $name/" /etc/hosts &&\
|
||||||
|
printf "DONE\n" || exit 1
|
||||||
|
|
||||||
|
# Update Zabbix Agent
|
||||||
|
printf "Update Zabbix Agent... "
|
||||||
|
sed -i "s/${name_old}/${name}/g" /etc/zabbix/zabbix_agentd.conf && printf "DONE\n" || exit 1
|
||||||
|
|
||||||
|
# Update IP address
|
||||||
|
printf "Update IP address... "
|
||||||
|
if $(uname -r | grep -E 'el8' &>/dev/null); then
|
||||||
|
printf "CentOS 8... "
|
||||||
|
nmcli con mod ens18 ipv4.addresses $cidr && printf "DONE\n" || exit 1
|
||||||
|
elif $(uname -r | grep 'arch' &>/dev/null); then
|
||||||
|
printf "Arch Linux... "
|
||||||
|
sed -i "s_${cidr_old}_${cidr}_g" /etc/netctl/ens18 && printf "DONE\n" || exit 1
|
||||||
|
else
|
||||||
|
printf "FAIL\n\nOS distribution not supported! Update IP address manually before rebooting!\n\n"
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Update SSH host keys
|
||||||
|
if [ -f /etc/ssh/ssh_host_rsa_key ]; then
|
||||||
|
printf "Found old keys. Removing... "
|
||||||
|
rm /etc/ssh/ssh*key* && printf "DONE\n" || exit 1
|
||||||
|
fi
|
||||||
|
printf "Regenerating host keys... "
|
||||||
|
ssh-keygen -A >/dev/null && printf "DONE\n" || exit 1
|
||||||
|
|
||||||
|
# Remove script after success
|
||||||
|
if [ -f /root/provision_new_server.sh ]; then
|
||||||
|
printf "Removing this script from /root... "
|
||||||
|
unlink /root/provision_new_server.sh || exit 1
|
||||||
|
printf "DONE\n"
|
||||||
|
printf " (This script can still be found in /opt/prov/bin)\n"
|
||||||
|
fi
|
||||||
|
|
||||||
|
printf "\nReboot to apply all changes.\n\n"
|
||||||
|
|
||||||
|
read -p "Would you like to reboot now? (y/N)" -n 1 -r
|
||||||
|
if echo $REPLY | grep -Eq '^[Yy]$'; then
|
||||||
|
printf "\n Rebooting...\n\n"
|
||||||
|
shutdown -r now
|
||||||
|
exit 42
|
||||||
|
else
|
||||||
|
printf "\nReboot has been deferred.\n"
|
||||||
|
exit 0
|
||||||
|
fi
|
||||||
|
|
||||||
Loading…
Reference in new issue