Intern:Benutzer:PaulRiegel/Panik

Massenspeicher

• ddrescue
• testdisk deutsch

Datensicherung

rsync

backup backups 2014-09-18 by fuckup with the last backup

rsync -avze "ssh -p 2142" PaulRiegel@srs2.stura.htw-dresden.de:/home/PaulRiegel/life-preserver/current/usr/home/rg/ /home/rg/

rsync --numeric-ids -avze "ssh -p 2142" PaulRiegel@srs2.stura.htw-dresden.de:/home/PaulRiegel/life-preserver/current/usr/home/rg/ /home/rg/

backup 2014-12-04 by fuckup with dd

rsync -avPe ssh /home/rg/ root@172.22.99.10:/mnt/backupv

rsync -avPe ssh root@172.22.99.10:/mnt/backupv /home/rg/

rsync -avPe ssh /home/rg/ v@172.22.99.215:/home/v/rg

backup 2014-12-12 after installation of user:PaulRiegel/PC-BSD

rsync -e ssh /home/rg-20141212-0652.home.tar.gz v@172.22.99.215:/home/v

sudo rsync -avzPe ssh /home/rg v@172.22.99.215:/home/v/backup/rsync

sudo rsync -avzPe "ssh -p 2142" /home/rg/ PaulRiegel@srs2.stura.htw-dresden.de:/home/PaulRiegel/backup/kleines/rsync/rg/

rsync Allgemein

Sicherung mit rsync erstellen

vom Rechner auf den Server schieben

sudo rsync -avzPe "ssh -p 2142" /home/rg/ PaulRiegel@srs2.stura.htw-dresden.de:/home/PaulRiegel/backup/kleines/rsync/rg/

Sicherung mit rsync wiederherstellen

sudo rsync -avzPe "ssh -p 2142" PaulRiegel@srs2.stura.htw-dresden.de:/home/PaulRiegel/backup/kleines/rsync/rg/ /home/rg/

zfs

Sicherung mit zfs erstellen

su

date "+%Y-%m-%d"

zfs snapshot -r vank@`date "+%Y-%m-%d"`

zfs list -t snapshot

zfs send -R pad@`date "+%Y-%m-%d"` | ssh -i ~/.ssh/id_rsa 141.56.50.121 zfs receive -vFd valume/rep/kleines-schwarzes

Dataset (zuvor) zum Entgegennehmen der Sicherung erstellen und konfigurieren

sudo zfs create data/backup/paul

sudo chown PaulRiegel /mnt/data/backup/paul

sudo zfs allow -u PaulRiegel create,mount,receive,destroy,mountpoint,canmount,send,snapshot,atime,setuid,compression,exec data/backup/paul

singel user mode

ZFS schreibar machen

zfs set readonly=off

zfs mount -a

temporäres Einhängen eines bestehenden snapshots

verfügbaren snapshots auflisten lassen

zfs list -t snapshot

Erstellen eines temporären Verzeichnisses, in das dann der einzelne snapshot eingehangen werden kann

mkdir /tmp/mountpoint-for-a-snapshot

Einhängen des snapshots in das erstellte temporäre Verzeichnis

mount -f zfs name-of-snapshot /tmp/mountpoint-for-a-snapshot

Tastaturlayout

wikipedia:en:QWERTY#US-International:wikipedia:en:File:KB US-International.svg

MySQL

• Resetting a forgotten MySQL root password

pf

ext_if="em0"
#       int_if="lo0"

ip = "141.56.50.123"

icmp_types = "echoreq"

open_tcp = "{
        22,
        80,
        443
}"

open_udp = "{
        22,
        80
}"

jails = "{
        10.1.1.1
}"

set block-policy return
set skip on lo0
set timeout { interval 10, frag 30 }
set timeout { tcp.first 120, tcp.opening 30, tcp.established 86400 }
set timeout { tcp.closing 900, tcp.finwait 45, tcp.closed 90 }
set timeout { udp.first 60, udp.single 30, udp.multiple 60 }
set timeout { icmp.first 20, icmp.error 10 }
set timeout { other.first 60, other.single 30, other.multiple 60 }
set timeout { adaptive.start 0, adaptive.end 0 }
set limit { states 10000, frags 5000 }
set loginterface em0
set optimization normal
set require-order yes
set fingerprints "/etc/pf.os"
set ruleset-optimization basic

scrub in all fragment reassemble random-id

nat on $ext_if proto {tcp udp icmp} from $jails to any -> $ip

block log all
block return
block in quick on $ext_if inet from <rfc1918> to any
antispoof quick for $ext_if

pass in on $ext_if proto tcp from any to any port ssh flags S/SA keep state
pass in on $ext_if proto tcp from any to any port $open_tcp flags S/SA keep state
pass in on $ext_if proto udp from any to any port $open_udp keep state
pass in on $ext_if inet proto icmp all icmp-type $icmp_types keep state
pass in on $ext_if inet proto udp from any to any port 33433 >< 33626 keep state
pass out quick all keep state