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

 
people/tomka.txt · Last modified: 2019/10/15 17:28 by tomka