ssh login without password
veoma korisna stvar ako imate puno unix strojeva i cesto se logujete…radite nesto…tj ssh-ujete 🙂
cilj je da se namjesti ssh pristup masini bez kucanja sifre.
[ ]——>[ server1 ]
[ client ]——>[ server2 ]
[ ]——>[ neki_komp ]
konfiguracija sa klijentske strane:
ssh-keygen -t rsa
ssh-copy-id root@server1_ip
ssh-copy-id root@server2_ip
ssh-copy-id root@neki_komp_ip
i kada se pokusa ssh root@server1_ip, ne trazi nam vise sifru….yeaah 😀
DHCP server
instalacija:
yum -y install dhcp
editovanje konfiguracionog fajla
nano /etc/dhcpd.conf
ddns-update-style interim;
ignore client-updates;
subnet 192.168.191.0 netmask 255.255.255.128 {
range 192.168.191.70 192.168.191.75;
# — default gateway
option routers 192.168.191.1;
option subnet-mask 255.255.255.128;
option nis-domain “domen”;
option domain-name “domen”;
option domain-name-servers 192.168.1.8;
# option time-offset -18000; # Eastern Standard Time
option ntp-servers ntp.server.domen;
# option netbios-name-servers 192.168.1.1;
# — Selects point-to-point node (default is hybrid). Don’t change this unless
# — you understand Netbios very well
# option netbios-node-type 2;
# range dynamic-bootp 192.168.0.128 192.168.0.254;
default-lease-time 21600;
max-lease-time 43200;
# we want the nameserver to appear at a fixed address
host jebiga {
#next-server marvin.redhat.com;
hardware ethernet 12:34:56:78:AB:CD;
fixed-address 207.175.42.254;
}
}
Gentoo – podesavanje interfejsa
prateci upustvo iz proslog posta, uspesno je podesena ip adresa na lan interfejsu, ali gentoo to po defaultu ne pamti.
zato je potrebno konfigurisati fajl koji ce prilikom dizanja sistema to zavrsiti.
dodati u fajl:
nano /etc/conf.d/net
config_eth0=( “10.100.5.5 netmask 255.255.255.0 broadcast 10.100.5.255” )
routes_eth0=( “default via 10.100.5.15″ )
dns_servers_eth0=”10.100.5.15”
Gentoo – instalacija dig, nslookup…
u defaultnoj instalaciji gentoo-a nema vrlo korisnih alata dig i nslookup i slicnih,
da bi ih instalirali samo uchukati u konzolu:
emerge bind-tools
i posle ovoga slobdna upotreba dig google.com i nslookup google.com je dozvoljena 😀
Gentoo – has a modification time in the future – greska
- One of the files in /etc/{conf.d,init.d} or /etc/rc.conf has a modification time in the future”
ako se dogodi ova greska prilikom bootovanja gentoo-a, evo resenja:
ovo se desilo jer ovi fajlovi nisu imali sredjeno vreme…
touch /etc/{conf.d,init.d}/*; touch /etc/rc.conf
—
ova greska se javlja jer se prilikom instalacije gentoo-a nije izvrsila ova komanda, tj pre kompajliranja kernela
cp /usr/share/zoneinfo/GMT /etc/localtime