seesaw v2简单部署
来源：互联网 发布：java连接数 编辑：程序博客网 时间：2024/05/10 10:29
seesaw v2简单部署
环境
- realserver centos7 64bit
- realserver application nginx
- seesaw node debian 8.3 64bit
- seesaw01 10.10.11.192
- VIP 10.10.11.223
- client 10.10.17.25
结构
+------------------+ | | | seesaw01 | | 10.10.11.0/24 | +------------------+ | | eth0 eth1 10.10.11.192 (启动过程中，这里有10.10.11.223) | | +--------------------------------------------------+ | | 10.10.17.25 10.10.11.37 | | +--------+ +-----------+ | client | | backend01 | +--------+ +-----------+ 部署
安装依赖
apt-get install -y selinux-utils setools libnl-3-dev libnl-genl-3-dev ipvsadm安装seesaw v2
编译参考：https://github.com/google/seesaw或我的前一篇博客《Seesaw v2了解》
编写安装脚本
将编译完成的二进制文件存放至新建~/bin目录，将源码中的etc目录复制到~/bin目录下，编写~/bin/install.sh:
#!/bin/bashSEESAW_BIN="/usr/local/seesaw"SEESAW_ETC="/etc/seesaw"SEESAW_LOG="/var/log/seesaw"install -d "${SEESAW_BIN}" "${SEESAW_ETC}" "${SEESAW_LOG}"install "~/bin/seesaw_cli" /usr/bin/seesawfor component in {ecu,engine,ha,healthcheck,ncc,watchdog}; do install "~/bin/seesaw_${component}" "${SEESAW_BIN}"doneinstall "etc/init/seesaw_watchdog.conf" "/etc/init"install "etc/seesaw/watchdog.cfg" "${SEESAW_ETC}"# Enable CAP_NET_RAW for seesaw binaries that require raw sockets./sbin/setcap cap_net_raw+ep "${SEESAW_BIN}/seesaw_ha"/sbin/setcap cap_net_raw+ep "${SEESAW_BIN}/seesaw_healthcheck"安装
root@seesaw01:~/bin# chmod +x seesaw_* && chmod +x install.shroot@seesaw01:~/bin# ./install.sh 配置
/etc/seesaw/seesaw.cfg配置文件内容：
root@seesaw01:~/bin# vim /etc/seesaw/seesaw.cfg[cluster]anycast_enabled = falsename = testnode_ipv4 = 10.10.11.192# peer_ipv4 第二个seesaw节点ip，本示例中只配置一个seesaw节点# vip_ipv4 目前还不知道这个vip是干啥用的，测试中没用到这个IP地址vip_ipv4 = 10.10.11.222[config_server]primary = https://seesaw01/[interface]node = eth0lb = eth1修改/etc/hosts，新增:127.0.0.1 seesaw01
/etc/seesaw/cluster.pb配置文件内容：
root@seesaw01:~/bin# vim /etc/seesaw/cluster.pbseesaw_vip: < fqdn: "seesaw-vip." ipv4: "10.10.11.222/24" status: TESTING>node: < fqdn: "seesaw01." ipv4: "10.10.11.192/24" status: TESTING>vserver: < name: "test-vserver" entry_address: < fqdn: "lb-test.localdomain." ipv4: "10.10.11.223/24" status: TESTING > rp: "admin@localdomain" vserver_entry: < protocol: TCP port: 80 scheduler: RR healthcheck: < type: HTTP port: 80 mode: DSR proxy: false tls_verify: false > > backend: < host: < fqdn: "10.10.11.37." ipv4: "10.10.11.37/24" status: TESTING > weight: 1 >>运行
/usr/local/seesaw/seesaw_watchdog -alsologtostderr=true -logtostderr=true
状态查看
root@seesaw01:~# seesawSeesaw CLI - Engine version 2root@test> ? config exit quit failover override showroot@test> show ? bgp backends destinations ha nodes version vlans vservers warningsroot@test> show nodesNodes[1] seesaw01. enabledroot@test> show vserversVserver Name: test-vserver Hostname: lb-test.localdomain. Status: enabled (override state default; config state enabled) IPv4 Address: 10.10.11.223/24 IPv6 Address: <not configured> Services: IPv4 TCP/80 (DSR, rr scheduler) State: enabled, healthy, active Watermarks: Low 0.00, High 0.00, Currently 1.00root@test> show backendsBackend Hostname: 10.10.11.37. Destinations: [ 1] test-vserver/10.10.11.37:80/TCP (enabled, unhealthy, inactive)root@test>show backends 查看realserver状态时发现是unhealthy, inactive
使用ipvsadm模块查看结果如下：
root@seesaw01:~# ipvsadm -lnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnFWM 65536 rr -> 10.10.11.37:0 Route 1 0 7# 在client上ping VIP，能通➜ ~ ping -c 4 10.10.11.223PING 10.10.11.223 (10.10.11.223): 56 data bytes64 bytes from 10.10.11.223: icmp_seq=0 ttl=63 time=2.272 ms64 bytes from 10.10.11.223: icmp_seq=1 ttl=63 time=2.245 ms64 bytes from 10.10.11.223: icmp_seq=2 ttl=63 time=1.610 ms64 bytes from 10.10.11.223: icmp_seq=3 ttl=63 time=2.294 ms--- 10.10.11.223 ping statistics ---4 packets transmitted, 4 packets received, 0.0% packet lossround-trip min/avg/max/stddev = 1.610/2.105/2.294/0.286 ms浏览器打开http://10.10.11.223无法访问
配置realserver
ssh root@10.10.11.37[root@localhost ~]# vim ~/lvs_real.sh#!/bin/bash# description: Config realserver#Written by :http://kerry.blog.51cto.comSNS_VIP=10.10.11.223/etc/rc.d/init.d/functionscase "$1" instart)/sbin/ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP up/sbin/route add -host $SNS_VIP dev lo:0echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignoreecho "2">/proc/sys/net/ipv4/conf/lo/arp_announceecho "1">/proc/sys/net/ipv4/conf/all/arp_ignoreecho "2">/proc/sys/net/ipv4/conf/all/arp_announcesysctl -p >/dev/null 2>&1echo "RealServer Start OK";;stop)/sbin/ifconfig lo:0 down/sbin/route del $SNS_VIP >/dev/null2>&1echo "0">/proc/sys/net/ipv4/conf/lo/arp_ignoreecho "0">/proc/sys/net/ipv4/conf/lo/arp_announceecho "0">/proc/sys/net/ipv4/conf/all/arp_ignoreecho "0">/proc/sys/net/ipv4/conf/all/arp_announceecho "RealServer Stoped";;*)echo "Usage: $0 {start|stop}"exit 1esacexit 0[root@localhost ~]# chmod +x lvs_real.sh注意文件中的VIP。
realserver上执行 ./lvs_real.sh start
在seesaw01上再次查看backends状态:
root@seesaw01:~# seesaw -c "show backends"Backend Hostname: 10.10.11.37. Destinations: [ 1] test-vserver/10.10.11.37:80/TCP (enabled, healthy, active)状态为healthy active
ipvsadm状态也恢复正常了：
root@seesaw01:~# ipvsadm -lnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 10.10.11.223:80 rr -> 10.10.11.37:80 Route 1 0 0FWM 65536 rr -> 10.10.11.37:0 Route 1 0 3浏览器也可以访问http://10.10.11.223了
总结
这个测试只是在局域网中进行简单的部署，并没有体现出seesaw多vlan的功能。目前试运行的几乎与LVS DR模式一致。下一步将结合quagga 进行多vlan特性测试。
可能遇到的坑
/var/log/seesaw/seesaw_ncc.logF0131 18:57:34.972241 5389 ipvs.go:40] IPVS initialisation failed: failed to resolve family name未安装或者未成功加载ipvs内核模块，解决：
root@seesaw01:~# apt-get install ipvsadm加载模块
modprobe ip_vsmodprobe ip_vs_wrr设置模块开机自动加载
root@seesaw01:~# echo ip_vs > /etc/modules-load.d/ipvs.confroot@seesaw01:~# echo ip_vs_wrr > /etc/modules-load.d/ipvs.confroot@seesaw01:~# systemctl restart systemd-modules-load.service/var/log/seesaw/seesaw_engine.logF0131 19:38:11.393617 20543 core.go:274] Failed to initialise LB interface: Failed to initialise sysctls: 优化模块：
root@seesaw01:~# echo nf_conntrack_ipv4 > /etc/modules-load.d/nf_conntrack.confroot@seesaw01:~# systemctl restart systemd-modules-load.service/var/log/seesaw/seesaw_engine.logF0131 20:03:08.723735 1775 core.go:274] Failed to initialise LB interface: Failed to get dummy interface: no such network interface或者
F0204 13:14:48.620264 8790 core.go:274] Failed to initialise LB interface: Failed to get dummy interface: route ip+net: no such network interface解决：
ip link add dummy0 type dummy
或者 ip link add ip+net type dummy
0 0
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