可以参考《Kubernetes IPVS模式下服务间长连接通讯的优化，解决Connection reset by peer问题》
先看节点的系统参数：
sysctl net.ipv4.tcp_keepalive_time net.ipv4.tcp_keepalive_probes net.ipv4.tcp_keepalive_intvl
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.tcp_keepalive_probes = 9
net.[……]
paste -d’ ‘ – – – – – –
如上，5行合并成一行，空格分开[……]
随机读
fio –randrepeat=1 –ioengine=libaio –direct=1 –gtod_reduce=1 –name=wtest –filename=wtest –bs=4k –iodepth=64 –size=1G –readwrite=randread
在我本地测试，SSD是80K，HDD是0.6K
阿里云测试，高效云盘21K，SSD云盘24K，ESSD云盘28K
随机写
fio –randrepeat=1 –ioengine=[……]