Heartbeat like IP-Takeover

Author: Stephan  |  Category: Linux, Netzwerk, Sonstiges

Heartbeat Based Clusters are a fine thing but even clusters can crash. In this case you may have to bring up the ressources manually. With

ip -f inet addr add 192.168.1.1/24 brd 192.168.1.255 dev eth1

you can add the VIP manually but you have to clean the ARP Caches manually to have sucess. You clean the ap caches with this command:

arping -c 4 -A -I eth1 192.168.1.1

A strange rdiff_backup error and its solution

Author: Stephan  |  Category: Linux, Netzwerk, Sonstiges

After a longer migration of rdiff_backup repository (4 Weeks) I got this strange error

[03/20/13 13:31:44] Exception 'Found too many current_mirror incs!' raised of class
'':
[03/20/13 13:31:44] File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 304,
in error_check_Main
[03/20/13 13:31:44] try: Main(arglist)
[03/20/13 13:31:44] File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 324,
in Main
[03/20/13 13:31:44] take_action(rps)
[03/20/13 13:31:44] File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 280,
in take_action
[03/20/13 13:31:44] elif action == "backup": Backup(rps[0], rps[1])
[03/20/13 13:31:44] File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 337,
in Backup
[03/20/13 13:31:44] backup_final_init(rpout)
[03/20/13 13:31:44] File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 501,
in backup_final_init
[03/20/13 13:31:44] checkdest_if_necessary(rpout)
[03/20/13 13:31:44] File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 916,
in checkdest_if_necessary
[03/20/13 13:31:44] need_check = checkdest_need_check(dest_rp)
[03/20/13 13:31:44] File "/usr/lib/pymodules/python2.6/rdiff_backup/Main.py", line 907,
in checkdest_need_check
[03/20/13 13:31:44] assert len(curmir_incs) == 2, "Found too many current_mirror incs!"

What happened ? Because of the very long Migration of the repository more than one current_mirror Statusfiles had been synced.
In the errormessage above it had been two files .
how to solve ?
Simply delete in all rdiff_datadirs all current_mirror* files except the newest one and your rdiff_backup is running again