Linux-HA

The High Availability Linux Project Heartbeat

Tegu on linuxi klastri softiga, millega saab edukalt teha standby klastri.
Alla saab laada aadressilt: http://www.linux-ha.org/DownloadSoftware
Saab confida nii guiga (hb_gui), aga võib ka ise confifaile modida
haresources failis asuvad iga node kohta kirjeldus, mis selles masinas peaks jooksma (sellenimeline fail peab asuma kataloogis /etc/init.d/)

cat haresources

mats 10.1.5.2 httpd resin
papp 10.1.5.1 vsftpd

ha.cf on klastri käitumist reguleeriv fail. Siit saab muuta igasuguseid seadeid, nt kas failback on lubatud jne

1. cat ha.cf

debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility     local0
# keepalive: how long between heartbeats?
keepalive 2

# deadtime: how long-to-declare-host-dead?
deadtime 30

# warntime: how long before issuing "late heartbeat" warning?
warntime 10

# Very first dead time (initdead)
initdead 120

udpport 694

bcast eth0

node papp
node mats
auto_failback on

ping 10.1.254.254
respawn hacluster /usr/lib/heartbeat/ipfail
apiauth cl_status uid=root
apiauth ipfail uid=root,hacluster

1. cat authkeys

auth 2
2 crc

Kõigest lähemalt http://www.linux-ha.org/GettingStarted