全部答: 挣钱

建议海康商用机，萤石子品牌可能不支持 iVMS-4200 局域网监控，2 年前研究的不知现在如何了。
自用 DS-7808HGH-E1/M 同轴网络混合，当年性价比超高的机子，不过现在貌似停产了。
网络建议做好 VLAN 隔离，不然如果被别人连入同局域网，监控密码秒破。

试下 sierrazone
https://www.hackintosh.computer/868/hackintosh-sierra-zone-aka-niresh-sierra-guide/

也来晒一堆学费，不知当初怎么想的。。。
http://i.imgur.com/6djsR54.png

lz 要不要自己测试下好坏： http://www.toutiao.com/i6389762723302867458

从马云家的采购经验看，上海日丰尚可，金牛很差，都不适合暗装。（不知是否正品，和实体店对比如何）能看到货的话拿各家的 32 外丝直接 拿在手里对比便知，一分钱一分货。

换不了的话建议再找师傅看下是否可能再加一路做 failover，因为管径增大还可以 load balance，原来的管也不浪费。要监控是否漏水可以装滴水表。三分管七分装，最好的管子也难免不出问题的。

测血压貌似真的可行： https://www.instantbloodpressure.com/

可能猫的 dmz 功能不好用，试下手动设置端口转发

plex

plan 按小时收费：
What is a Lightsail plan?

Lightsail plans are charged on an hourly, on-demand basis, so you only pay for a plan when you're using it.

@tomxin7 https://en.wikipedia.org/wiki/Delphi
Delphi (/ˈdɛlfaɪ/ or /ˈdɛlfi/; Greek: Δελφοί, [ðelˈfi])

@Buffer2Disk 嗯，是抓包实现的，可以做 DPI，如果只是需要网卡包统计的话确实用不到。
了解了下 vnstat 直接读的系统数据，应该可以和 ifconfig 的结果对比下就知道数据对不对了吧？

@SharkIng 具体有啥影响？最新 kernel 有做了修复，不过不知是否完全修复。

这个错误我是刚重启的时候连不上 SSH 进 hyper-v console 才发现的，重启 VM 后 SSH 正常但是还是报了 2 条 unregister_netdevice，不知是否相关。

[以下有点乱，仅作个人记录]
看了下 dmesg，还伴随着很多“ docker0: port #(veth......) entered blocking/disabled state ”的 log，看了下 GCE/Vultr KVM 的 VM 也有 blocking/disabled log （但是没有 unregister_netdevice ），猜测是 packetbeat 抓包导致的。（没有 packetbeat 抓包的机子就没有这些 log。）
PS1：所有 container 都是--net host 运行
PS2：报 unregister_netdevice 的 VM 用的是 B150 主板板载 Realtek 网卡...
PS3：目前 kernel 4.10.0-19-generic，准备升 4.11 看下

贴下 unregister_netdevice 那台机器的 dmesg，当作记录：

[ 8.263327] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.
[ 8.265021] Bridge firewalling registered
[ 8.270259] nf_conntrack version 0.5.0 (65536 buckets, 262144 max)
[ 8.352304] Initializing XFRM netlink socket
[ 8.395477] IPv6: ADDRCONF(NETDEV_UP): docker0: link is not ready
[ 8.934882] aufs au_opts_verify:1585:dockerd[1619]: dirperm1 breaks the protection by the permission bits on the lower branch
[ 9.152098] docker0: port 1(veth41c7ef0) entered blocking state
[ 9.152098] docker0: port 1(veth41c7ef0) entered disabled state
[ 9.152267] device veth41c7ef0 entered promiscuous mode
[ 9.152695] IPv6: ADDRCONF(NETDEV_UP): veth41c7ef0: link is not ready
[ 9.152700] docker0: port 1(veth41c7ef0) entered blocking state
[ 9.152701] docker0: port 1(veth41c7ef0) entered forwarding state
[ 9.152771] docker0: port 1(veth41c7ef0) entered disabled state
[ 11.332410] eth0: renamed from vethe136227
[ 11.348824] IPv6: ADDRCONF(NETDEV_CHANGE): veth41c7ef0: link becomes ready
[ 11.348896] docker0: port 1(veth41c7ef0) entered blocking state
[ 11.348897] docker0: port 1(veth41c7ef0) entered forwarding state
[ 11.348985] IPv6: ADDRCONF(NETDEV_CHANGE): docker0: link becomes ready
[ 12.766843] docker0: port 2(veth49d7060) entered blocking state
[ 12.766844] docker0: port 2(veth49d7060) entered disabled state
[ 12.767074] device veth49d7060 entered promiscuous mode
[ 12.767203] IPv6: ADDRCONF(NETDEV_UP): veth49d7060: link is not ready
[ 12.767206] docker0: port 2(veth49d7060) entered blocking state
[ 12.767207] docker0: port 2(veth49d7060) entered forwarding state
[ 12.767329] docker0: port 2(veth49d7060) entered disabled state
[ 13.780687] eth0: renamed from vethc063ec5
[ 13.792810] IPv6: ADDRCONF(NETDEV_CHANGE): veth49d7060: link becomes ready
[ 13.792887] docker0: port 2(veth49d7060) entered blocking state
[ 13.792888] docker0: port 2(veth49d7060) entered forwarding state
[ 52.227899] hv_balloon: INFO_TYPE_MAX_PAGE_CNT = 3072000
[ 56.286544] hv_utils: KVP IC version 4.0
[ 910.342263] docker0: port 3(veth622db14) entered blocking state
[ 910.342265] docker0: port 3(veth622db14) entered disabled state
[ 910.342459] device veth622db14 entered promiscuous mode
[ 910.342573] IPv6: ADDRCONF(NETDEV_UP): veth622db14: link is not ready
[ 910.468949] eth0: renamed from vethf117385
[ 910.485201] IPv6: ADDRCONF(NETDEV_CHANGE): veth622db14: link becomes ready
[ 910.485297] docker0: port 3(veth622db14) entered blocking state
[ 910.485299] docker0: port 3(veth622db14) entered forwarding state
[ 924.891826] docker0: port 3(veth622db14) entered disabled state
[ 924.891832] vethf117385: renamed from eth0
[ 924.933207] docker0: port 3(veth622db14) entered disabled state
[ 924.935302] device veth622db14 left promiscuous mode
[ 924.935306] docker0: port 3(veth622db14) entered disabled state
[ 1088.348123] unregister_netdevice: waiting for lo to become free. Usage count = 1
[ 2182.977980] docker0: port 3(vethe1afdfb) entered blocking state
[ 2182.977981] docker0: port 3(vethe1afdfb) entered disabled state
[ 2182.978204] device vethe1afdfb entered promiscuous mode
[ 2182.978357] IPv6: ADDRCONF(NETDEV_UP): vethe1afdfb: link is not ready
[ 2183.076738] eth0: renamed from vethfcb6742
[ 2183.094282] IPv6: ADDRCONF(NETDEV_CHANGE): vethe1afdfb: link becomes ready
[ 2183.094481] docker0: port 3(vethe1afdfb) entered blocking state
[ 2183.094482] docker0: port 3(vethe1afdfb) entered forwarding state
[ 2194.980883] docker0: port 3(vethe1afdfb) entered disabled state
[ 2194.981195] vethfcb6742: renamed from eth0
[ 2195.018586] docker0: port 3(vethe1afdfb) entered disabled state
[ 2195.021027] device vethe1afdfb left promiscuous mode
[ 2195.021031] docker0: port 3(vethe1afdfb) entered disabled state
[ 3021.669760] docker0: port 3(vethb0d2857) entered blocking state
[ 3021.669760] docker0: port 3(vethb0d2857) entered disabled state
[ 3021.670990] device vethb0d2857 entered promiscuous mode
[ 3021.671312] IPv6: ADDRCONF(NETDEV_UP): vethb0d2857: link is not ready
[ 3021.784817] eth0: renamed from veth12e4511
[ 3021.804650] IPv6: ADDRCONF(NETDEV_CHANGE): vethb0d2857: link becomes ready
[ 3021.804739] docker0: port 3(vethb0d2857) entered blocking state
[ 3021.804740] docker0: port 3(vethb0d2857) entered forwarding state
[ 3022.613543] docker0: port 3(vethb0d2857) entered disabled state
[ 3022.613652] veth12e4511: renamed from eth0
[ 3022.651080] docker0: port 3(vethb0d2857) entered disabled state
[ 3022.656981] device vethb0d2857 left promiscuous mode
[ 3022.657016] docker0: port 3(vethb0d2857) entered disabled state
[ 3357.591305] docker0: port 3(vethb900f81) entered blocking state
[ 3357.591306] docker0: port 3(vethb900f81) entered disabled state
[ 3357.591425] device vethb900f81 entered promiscuous mode
[ 3357.591511] IPv6: ADDRCONF(NETDEV_UP): vethb900f81: link is not ready
[ 3357.696529] eth0: renamed from vethf79a1ab
[ 3357.716768] IPv6: ADDRCONF(NETDEV_CHANGE): vethb900f81: link becomes ready
[ 3357.716854] docker0: port 3(vethb900f81) entered blocking state
[ 3357.716855] docker0: port 3(vethb900f81) entered forwarding state
[ 3407.848335] vethf79a1ab: renamed from eth0
[ 3407.881076] docker0: port 3(vethb900f81) entered disabled state
[ 3407.898598] docker0: port 3(vethb900f81) entered disabled state
[ 3407.904083] device vethb900f81 left promiscuous mode
[ 3407.904104] docker0: port 3(vethb900f81) entered disabled state
[ 3603.292153] unregister_netdevice: waiting for lo to become free. Usage count = 1

为啥选这个工具？看了下貌似是新项目？
推荐研究下 pmacct 或 Elastic stack 的 packetbeat，最近也正在研究

@mimicom 内部只有 3 节 5 号点焊的空间，18650 放不下；功率只有 1w，比 2 节版还小，动力锂应该用处不大。
准备改 14500 锂电*1+保护板或充电板，如果能找到 4.3v 高压版 14500 锂电+迷你升压板应该更完美了。

涨的太夸张的一般都要领神券买的，比如：
http://i.imgur.com/dlU4amE.png