Online.net provides failover IPs in a different subnet from the primary ip.
Note the following:
# grep ^[^#] /etc/vz/vz.conf VIRTUOZZO=yes LOCKDIR=/var/lib/vz/lock DUMPDIR=/var/lib/vz/dump VE0CPUUNITS=1000 LOGGING=yes LOGFILE=/var/log/vzctl.log LOG_LEVEL=0 VERBOSE=0 DISK_QUOTA=yes VZFASTBOOT=no NEIGHBOUR_DEVS=all ERROR_ON_ARPFAIL="no" TEMPLATE=/var/lib/vz/template VE_ROOT=/var/lib/vz/root/$VEID VE_PRIVATE=/var/lib/vz/private/$VEID VZWDOG="no" IPTABLES="ipt_REJECT ipt_tos ipt_limit ipt_multiport iptable_filter iptable_mangle ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_length" IPTABLES_MODULES="$IPTABLES" IPV6="yes" IP6TABLES="ip6_tables ip6table_filter ip6table_mangle ip6t_REJECT" [email protected]:~# grep ^[^##] /etc/vz/vz.conf VIRTUOZZO=yes LOCKDIR=/var/lib/vz/lock DUMPDIR=/var/lib/vz/dump VE0CPUUNITS=1000 LOGGING=yes LOGFILE=/var/log/vzctl.log LOG_LEVEL=0 VERBOSE=0 DISK_QUOTA=yes VZFASTBOOT=no NEIGHBOUR_DEVS=all ERROR_ON_ARPFAIL="no" TEMPLATE=/var/lib/vz/template VE_ROOT=/var/lib/vz/root/$VEID VE_PRIVATE=/var/lib/vz/private/$VEID VZWDOG="no" IPTABLES="ipt_REJECT ipt_tos ipt_limit ipt_multiport iptable_filter iptable_mangle ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_length" IPTABLES_MODULES="$IPTABLES" IPV6="yes" IP6TABLES="ip6_tables ip6table_filter ip6table_mangle ip6t_REJECT"
The change needed is to change the default:
NEIGHBOUR_DEVS=detect
to:
NEIGHBOUR_DEVS=all
From the man page:
man vz.conf
NEIGHBOUR_DEVS=”detect”
Controls on which interfaces to add/remove ARP records for a container IP, also which interfaces to use to query/announce ARP. If this is set to
detect, the right network interface (the one which is in the same subnet as a CT IP) will be chosen automatically. Any other value restores old (as
of vzctl 3.0.19 or older) behavior, when all the possible interfaces were used.
The network configuration need not be changed, and defaults to:
cat /etc/network/interfaces
auto lo
iface lo inet loopback
# The primary network interface
auto vmbr0
iface vmbr0 inet static
address MYMAINIP
netmask 255.255.255.0
network 62.210.137.0
broadcast 62.210.137.255
gateway 62.210.137.1
bridge_ports eth0
bridge_stp off
bridge_fd 0
Joel G Mathew, known in tech circles by the pseudonym Droidzone, is an opensource and programming enthusiast.
He is a full stack developer, whose favorite languages are currently Python and Vue.js. He is also fluent in Javascript, Flutter/Dart, Perl, PHP, SQL, C and bash shell scripting. He loves Linux, and can often be found tinkering with linux kernel code, and source code for GNU applications. He used to be an active developer on XDA forums, and his tinkered ROMS used to be very popular in the early 2000s.
His favorite pastime is grappling with GNU compilers, discovering newer Linux secrets, writing scripts, hacking roms, and programs (nothing illegal), reading, blogging. and testing out the latest gadgets.
When away from the tech world, Dr Joel G. Mathew is a practising ENT Surgeon, busy with surgeries and clinical practise.