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Diffstat (limited to 'doc/sync/alarm/conntrackd.conf')
| -rw-r--r-- | doc/sync/alarm/conntrackd.conf | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/doc/sync/alarm/conntrackd.conf b/doc/sync/alarm/conntrackd.conf new file mode 100644 index 0000000..a65a378 --- /dev/null +++ b/doc/sync/alarm/conntrackd.conf @@ -0,0 +1,198 @@ +# +# Synchronizer settings +# +Sync { + Mode ALARM { + # + # If a conntrack entry is not modified in <= 15 seconds, then + # a message is broadcasted. This mechanism is used to + # resynchronize nodes that just joined the multicast group + # + RefreshTime 15 + + # + # If we don't receive a notification about the state of + # an entry in the external cache after N seconds, then + # remove it. + # + CacheTimeout 180 + + # + # Entries committed to the connection tracking table + # starts with a limited timeout of N seconds until the + # takeover process is completed. + # + CommitTimeout 180 + } + + # + # 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 { + # + # Multicast address: The address that you use as destination + # in the synchronization messages. You do not have to add + # this IP to any of your existing interfaces. If any doubt, + # do not modify this value. + # + IPv4_address 225.0.0.50 + + # + # The multicast group that identifies the cluster. If any + # doubt, do not modify this value. + # + Group 3780 + + # + # IP address of the interface that you are going to use to + # send the synchronization messages. Remember that you must + # use a dedicated link for the synchronization messages. + # + IPv4_interface 192.168.100.100 + + # + # The name of the interface that you are going to use to + # send the synchronization messages. + # + Interface eth2 + + # The multicast sender uses a buffer to enqueue the packets + # that are going to be transmitted. The default size of this + # socket buffer is available at /proc/sys/net/core/wmem_default. + # This value determines the chances to have an overrun in the + # sender queue. The overrun results packet loss, thus, losing + # state information that would have to be retransmitted. If you + # notice some packet loss, you may want to increase the size + # of the sender buffer. + # + # McastSndSocketBuffer 1249280 + + # The multicast receiver uses a buffer to enqueue the packets + # that the socket is pending to handle. The default size of this + # socket buffer is available at /proc/sys/net/core/rmem_default. + # This value determines the chances to have an overrun in the + # receiver queue. The overrun results packet loss, thus, losing + # state information that would have to be retransmitted. If you + # notice some packet loss, you may want to increase the size of + # the receiver buffer. + # + # McastRcvSocketBuffer 1249280 + } + + # + # Enable/Disable message checksumming. This is a good property to + # achieve fault-tolerance. In case of doubt, do not modify this value. + # + Checksum on + + # If you have a multiprimary setup (active-active) without connection + # persistency, ie. you can't know which firewall handles a packet + # that is part of a connection, then you need direct commit of + # conntrack entries to the kernel conntrack table. OSPF setups must + # set on this option. If you have a simple primary-backup scenario. + # Do not set it on. Default is off. + # + # CacheWriteThrough On +} + +# +# 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: on (/var/log/conntrackd.log), off, or a filename + # Default: off + # + LogFile on + + # + # Syslog: on, off or a facility name (daemon (default) or local0..7) + # Default: off + # + #Syslog on + + # + # 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 + + # + # Event filtering: This clause allows you to filter certain traffic, + # There are currently three filter-sets: Protocol, Address and + # State. The filter is attached to an action that can be: Accept or + # Ignore. Thus, you can define the event filtering policy of the + # filter-sets in positive or negative logic depending on your needs. + # + Filter { + # + # Accept only certain protocols: You may want to replicate + # the state of flows depending on their layer 4 protocol. + # + Protocol Accept { + TCP + } + + # + # Ignore traffic for a certain set of IP's: Usually all the + # IP assigned to the firewall since local traffic must be + # ignored, only forwarded connections are worth to replicate. + # Note that these values depends on the local IPs that are + # assigned to the firewall. + # + Address Ignore { + IPv4_address 127.0.0.1 # loopback + IPv4_address 192.168.0.100 # virtual IP 1 + IPv4_address 192.168.1.100 # virtual IP 2 + IPv4_address 192.168.0.1 + IPv4_address 192.168.1.1 + IPv4_address 192.168.100.100 # dedicated link ip + } + + # + # Uncomment this line below if you want to filter by flow state. + # This option introduces a trade-off in the replication: it + # reduces CPU consumption at the cost of having lazy backup + # firewall replicas. The existing TCP states are: SYN_SENT, + # SYN_RECV, ESTABLISHED, FIN_WAIT, CLOSE_WAIT, LAST_ACK, + # TIME_WAIT, CLOSED, LISTEN. + # + # State Accept { + # ESTABLISHED CLOSED TIME_WAIT CLOSE_WAIT for TCP + # } + } +} |