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#
# Synchronizer settings
#
Sync {
Mode NACK {
#
# Size of the buffer that hold destroy messages for
# possible resends (in bytes)
#
ResendBufferSize 262144
# Entries committed to the connection tracking table
# starts with a limited timeout of N seconds until the
# takeover process is completed.
#
CommitTimeout 180
# Set Acknowledgement window size
ACKWindowSize 20
}
#
# Multicast IP and interface where messages are
# broadcasted (dedicated link). IMPORTANT: Make sure
# that iptables accepts traffic for destination
# 225.0.0.50, eg:
#
# iptables -I INPUT -d 225.0.0.50 -j ACCEPT
# iptables -I OUTPUT -d 225.0.0.50 -j ACCEPT
#
Multicast {
IPv4_address 225.0.0.50
IPv4_interface 192.168.100.200 # IP of dedicated link
Group 3780
Backlog 20
}
# Enable/Disable message checksumming
Checksum on
# Uncomment this if you want to replicate just certain TCP states.
# This option introduces a tradeoff in the replication: it reduces
# CPU consumption and lost messages rate at the cost of having
# backup replicas that don't contain the current state that the active
# replica holds. TCP states are: SYN_SENT, SYN_RECV, ESTABLISHED,
# FIN_WAIT, CLOSE_WAIT, LAST_ACK, TIME_WAIT, CLOSE, LISTEN.
#
# Replicate ESTABLISHED TIME_WAIT for TCP
}
#
# General settings
#
General {
#
# Number of buckets in the caches: hash table
#
HashSize 8192
#
# Maximum number of conntracks:
# it must be >= $ cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max
#
HashLimit 65535
#
# Logfile
#
LogFile /var/log/conntrackd.log
#
# Lockfile
#
LockFile /var/lock/conntrack.lock
#
# Unix socket configuration
#
UNIX {
Path /tmp/sync.sock
Backlog 20
}
#
# Netlink socket buffer size
#
SocketBufferSize 262142
#
# Increase the socket buffer up to maximum if required
#
SocketBufferSizeMaxGrown 655355
}
#
# Ignore traffic for a certain set of IP's: Usually
# all the IP assigned to the firewall since local
# traffic must be ignored, just forwarded connections
# are worth to replicate
#
IgnoreTrafficFor {
IPv4_address 127.0.0.1 # loopback
IPv4_address 192.168.0.2
IPv4_address 192.168.1.2
IPv4_address 192.168.100.200 # dedicated link ip
IPv4_address 192.168.0.200 # virtual IP 1
IPv4_address 192.168.1.200 # virtual IP 2
}
#
# Do not replicate certain protocol traffic
#
IgnoreProtocol {
UDP
ICMP
IGMP
VRRP
# numeric numbers also valid
}
#
# Strip NAT traffic
#
StripNAT
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