On Fri, Aug 23, 2013 at 11:53 AM, Trevor Kates katestt@gmail.com wrote:
lvs.cf: serial_no = 56 primary = 10.100.9.40 service = lvs backup_active = 1 backup = 10.100.9.41 heartbeat = 1 heartbeat_port = 539 keepalive = 6 deadtime = 18 network = direct debug_level = NONE monitor_links = 1 syncdaemon = 1 syncd_iface = eth0 syncd_id = 0 virtual ns1 { active = 1 address = 10.100.9.224 eth0:2 vip_nmask = 255.255.255.0 port = 53 use_regex = 0 load_monitor = rup scheduler = wlc protocol = tcp timeout = 6 reentry = 15 quiesce_server = 0 server ns1a { address = 10.100.9.221 active = 1 weight = 1 } server ns1b { address = 10.100.9.222 active = 1 weight = 1 } } virtual ns1 { active = 1 address = 10.100.9.224 eth0:2 vip_nmask = 255.255.255.0 port = 53 send = "\n" use_regex = 0 load_monitor = rup scheduler = wlc protocol = udp timeout = 6 reentry = 15 quiesce_server = 0 server ns1a { address = 10.100.9.221 active = 1 weight = 1 } server ns1b { address = 10.100.9.222 active = 1 weight = 1 } }
/etc/sysctl.conf (LVS): # Kernel sysctl configuration file for Red Hat Linux # # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and # sysctl.conf(5) for more details.
# Controls IP packet forwarding net.ipv4.ip_forward = 1
# Controls source route verification net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing net.ipv4.conf.default.accept_source_route = 0
# Promote secondary IPs (virtual) upon failover net.ipv4.conf.all.promote_secondaries = 1
# Controls the System Request debugging functionality of the kernel kernel.sysrq = 0
# Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1
# Controls the use of TCP syncookies net.ipv4.tcp_syncookies = 1
# Disable netfilter on bridges. net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0
# Controls the maximum size of a message, in bytes kernel.msgmnb = 65536
# Controls the default maxmimum size of a mesage queue kernel.msgmax = 65536
# Controls the maximum shared segment size, in bytes kernel.shmmax = 68719476736
# Controls the maximum number of shared memory segments, in pages kernel.shmall = 4294967296
# Force nfs lock daemon to a set port fs.nfs.nlm_udpport=35001 fs.nfs.nlm_tcpport=35001
/etc/sysctl.conf (Real Server): # Kernel sysctl configuration file for Red Hat Linux # # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and # sysctl.conf(5) for more details.
# Controls IP packet forwarding net.ipv4.ip_forward = 0
# Controls source route verification net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing net.ipv4.conf.default.accept_source_route = 0
# Controls the System Request debugging functionality of the kernel kernel.sysrq = 0
# Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1
# Controls the use of TCP syncookies net.ipv4.tcp_syncookies = 1
# Disable netfilter on bridges. net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0
# Controls the default maxmimum size of a mesage queue kernel.msgmnb = 65536
# Controls the maximum size of a message, in bytes kernel.msgmax = 65536
# Controls the maximum shared segment size, in bytes kernel.shmmax = 68719476736
# Controls the maximum number of shared memory segments, in pages kernel.shmall = 4294967296
# Force nfs lock daemon to a set port fs.nfs.nlm_udpport=35001 fs.nfs.nlm_tcpport=35001
Embarrassingly, I was missing a sending program with a proper expect line for the UDP connection. All is working now.
Thanks. --