怎么查看网络错包数
1、ifconfig
[root@server ~]# ifconfig
bond0: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST> mtu 1500
inet 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe81::1266:dcff:feeb:6710 prefixlen 64 scopeid 0x20<link>
ether 18:66:da:eb:67:10 txqueuelen 1000 (Ethernet)
RX packets 7342322271 bytes 3260219046010 (2.9 TiB)
RX errors 0 dropped 37 overruns 0 frame 0
TX packets 6108635313 bytes 1619097536645 (1.4 TiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
RX errors 0 表示当前网卡错包数为0
2、/proc/net/dev
[root@server ~]# cat /proc/net/dev
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
vethc50bf17: 1798719 17603 0 0 0 0 0 0 2211512 17318 0 0 0 0 0 0
bond0: 3261653828988 7343321857 0 37 0 0 0 128381373 1619116041921 6108884429 0 0 0 0 0 0
lo: 23077647696 40811656 0 0 0 0 0 0 23077647696 40811656 0 0 0 0 0 0
docker0: 58844814 604435 0 0 0 0 0 0 438413267 586700 0 0 0 0 0 0
- bytes: The total number of bytes of data transmitted or received by the interface.（接口发送或接收的数据的总字节数）
- packets: The total number of packets of data transmitted or received by the interface.（接口发送或接收的数据包总数）
- errs: The total number of transmit or receive errors detected by the device driver.（由设备驱动程序检测到的发送或接收错误的总数）
- drop: The total number of packets dropped by the device driver.（设备驱动程序丢弃的数据包总数）
- fifo: The number of FIFO buffer errors.（FIFO缓冲区错误的数量）
- frame: The number of packet framing errors.（分组帧错误的数量）
- colls: The number of collisions detected on the interface.（接口上检测到的冲突数）
- compressed: The number of compressed packets transmitted or received by the device driver. (This appears to be unused in the 2.2.15 kernel.)（设备驱动程序发送或接收的压缩数据包数）
- carrier: The number of carrier losses detected by the device driver.（由设备驱动程序检测到的载波损耗的数量）
- multicast: The number of multicast frames transmitted or received by the device driver.（设备驱动程序发送或接收的多播帧数）
由此可得，该文件内的第四列为每个网卡的错报数，累加即可得linux总错报数
接入zabbix
zabbix agent一个自带监控项vfs.file.contents[file,<encoding>]，检索文件并返回其内容，具体可查阅官方文档
Item配置部分
预处理
该监控项拿到的是整个文本内容，需要做二次处理，这里我们使用预处理的JavaScript
// 切片去除前两行
value_list = value.split('\n').slice(2)
// 错包总数
var err_count = 0;
for (i = 0; i < value_list.length; i++) {
// 去收尾空格，并以空格再次分隔取出第四列
err_num = value_list[i].replace(/(^\s*)|(\s*$)/g, "").split(/\s+/)[3]
if (err_num != undefined) {
err_count += parseInt(err_num)
}
}
return err_count
再加一个Change per second，计算每秒变化量，以便添加触发器
Test验证成功后添加即可
监控告警
trigger部分没什么好说的，看图
