====== Cheat sheet ======
  * ssh-keygen - udela klic na ssh do .ssh/id_rsa a id_rsa.pub
  * na servery se verejny klic pridava do .ssh/authorized_keys
  * pouziti stareho klice  ssh root@h8.starlab.cz -i .ssh/id_rsa.bad

====== Proces proverky zaloh ======

1) porovnat virsh list a /home/godsview/bin

2) mrknout na crontab -l kontrolovat jak casto se pousti a jestli se pousti
   * pozn. tejden zacina od nedele

3) checknout datumy u skriptu /home/godsview/bin/ a /srv/storage/backup/*nazev*
      * prislusny skript ve storage najdu pomoci nano /home/godsview/bin/backup/nazev
           * lepe pomoci virsh domblklist boris-petr
      * reportovat mesic a vic stare zalohy

==== snapshot check =====
  * virsh list
  * cd /home/godsview/bin/backup

====== Rdiff-backup ======
h1-h9
1) zkontrolovat existenci /etc/cron.daily/backup
     *pokud tam je pouze backup.disabled tak : cp backup.disabled backup
     *upravit backup tak ze odmazu vse pod 2 vrchnimi prikazy rdiff backup (remove older a print statistics /root)
2) spustit backup ./backup
 2.1) pokud nema klic tak
      * zkontrolovat existenci rsa klice, pokud neni na serveru vygenerovan tak ssh-keygen, pozor bez 
      * nedelat keygen pokud uz tam klic je (id_rsa.pub)
      * na backup serveru klic pridat pomoci ./add_back.sh
3) kontrola backupu

* ls -al /backup/

* /root/bin/check_rdiff  -r /backup/h1-de/root/  -w 30 -c 60 -l 100 -p 20

----------------------------------------------
vps

  * zalohovat srv tam, kde je srv disk : df -h
  * kontrolovat dobu u zaloh older than 4w obvykle
1) zkontrolovat existenci srv : df -h



====== Cron ======
linuxovej planovac uloh

planovane ulohy /var/spool/cron/crontabs/

* crontab -l vypise file s cron ulohami na serveru



====== MySQL backup user ======
   mysql -u root -p
   use mysql
   
   select user from mysql.user; 
   
   grant select, lock tables, super, process, reload on *.* to backup identified by 'cah7Eingoogh';
   
  
   update user set password=password('cah7Eingoogh') where user='backup';
   flush privileges;
   
   ctrl+d quit
   bacha na stredniky
====== Puppet ======
spusteni puppetu na serveru : puppet agent -t


====== Hostname rename ======

1) vi /etc/hostname
2) vi /etc/hosts
3) hostname nazev
4) odhlasit a prihlasit



====== Nastaveni site ======
ip a
 * a k nenastavene ens viz dale 

vi /etc/network/interfaces

pridat do toho souboru:
auto ens9
iface ens9 inet dhcp

ens podle :
source /etc/network/interfaces

nakonec spustit:

ifup ens9
======Sound ======
When all gui fail, try //alsamixer//