Debug OpenvSwitch (by quqi99)

作者：张华 发表于：2020-12-28
版权声明：可以任意转载，转载时请务必以超链接形式标明文章原始出处和作者信息及本版权声明

GDB调试

sysctl kernel.core_pattern
sudo service apport start force_start=1 enabled=1
grep enabled /etc/default/apport
sudo killall -SIGSEGV ovs-vswitchd
sudo cat /var/log/apport.log
sudo apt install openvswitch-dbg cgdb
#cgdb $(which ovs-vswitchd) $(pidof ovs-vswitchd)
cgdb ovs-vswitchd /var/crash/_usr_lib_openvswitch-switch_ovs-vswitchd.0.crash

Debug Log

# log level: emer，err，warn，info，dbg,OFF
# log type: console, syslog, file
sudo ovs-appctl vlog/list |grep vswitchd
sudo ovs-appctl vlog/set vswitchd:file:dbg
sudo ovs-appctl vlog/set vswitchd:file:OFF
sudo ovs-appctl vlog/set ANY:ANY:dbg

# use this one, we can see the realtime log
sudo ovs-appctl vlog/set ANY:file:dbg
tail -f /var/log/openvswitch/ovs-vswitchd.log

CLI Usage

#网桥状态
ovs-vsctl show
#网桥查询
ovs-vsctl list-br
#端口查询
ovs-vsctl list-ports br-int
#接口查询
ovs-vsctl list-ifaces br-int
#端口、接口归属查询
ovs-vsctl port-to-br tap30580aa5-b0
ovs-vsctl iface-to-br tap30580aa5-b0
#查询网桥流表
ovs-ofctl dump-flows br-int
#查询网桥信息
ovs-ofctl show br-int
#Datapath统计信息查询：hit表示datapath命中数，missed未命中，lost表示没有传递到用户空间就丢弃了
ovs-dpctl show
#查询端口详细统计信息
ovs-dpctl show -s
#指定端口统计信息
ovs-ofctl dump-ports br-int 1
#网桥转发规则
ovs-appctl fdb/show br-int

#日志查询
ovsdb-tool show-log -m /var/lib/openvswitch/conf.db

#流表匹配
ovs-appctl ofproto/trace br-tun dl_vlan=1

标签：ovs,vswitchd,sudo,OpenvSwitch,quqi99,br,Debug,appctl,log
来源： https://blog.csdn.net/quqi99/article/details/111831695