CentOS上端口转发方案之HAProxy

Operation and MaintananceLeave a comment

端口转发的实际使用场景很多，比如说load balance，比如说流量中转

所谓的端口转发，是发生在网络协议的第四层，TCP/UDP层，也就是IP层面

所以一般来说有这么几个解决方案:

iptables: 系统原生底层的解决方案，配置比较麻烦。但是如果使用CSF来配置iptables，这是非常简单的

HAproxy: 性能比iptables高，配置简单，但是只支持TCP，不支持UDP. 但是如果不玩游戏的话，TCP的端口转发就足够了。

因此这篇文章主要讲述如何使用HAProxy来做流量中转.

底层操作系统是CentOS 7，系统的repo自带haproxy，版本比较老(1.5.18)但是足够用了

安装haproxy:

yum install haproxy

systemctl enable hapoxy

配置haproxy:

cd /etc/haproxy
mv haproxy.cfg haproxy.cfg.bak
vi haproxy.cfg

然后输入下面的配置:

global
ulimit-n 51200
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
user haproxy
group haproxy
daemon

defaults
log global
mode tcp
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
maxconn 20480

frontend v2
bind *:443
default_backend v2

backend v2
server v1 A.A.A.A maxconn 20480

frontend rdp
bind *:3389
default_backend rdp

backend rdp
server r1 B.B.B.B maxconn 20480

上图表示把把这台服务器的443端口的流量转到A.A.A.A的443端口上，把这台服务器的3389端口流量转到B.B.B.B的443端口上

配置好以后，下面只需要开启haproxy服务就好了

systemctl start haproxy

OVH文档常用链接

HostingLeave a comment

Failover IP另外一种配置方法:

https://docs.ovh.com/ie/en/public-cloud/configure_a_failover_ip_with_centos/

用IPMI安装OS:

https://support.us.ovhcloud.com/hc/en-us/articles/360000108630-How-to-Install-an-OS-with-IPMI

从BIOS里面设置硬RAID

https://support.us.ovhcloud.com/hc/en-us/articles/360004809700-How-to-Configure-RAID-from-the-BIOS

ESXi6.5安装创建VM

https://support.us.ovhcloud.com/hc/en-us/articles/360003263859-How-to-Create-a-VM-in-VMware-ESXi-6-5

使用救援模式

https://support.us.ovhcloud.com/hc/en-us/articles/115001754490-How-to-Use-Rescue-Mode

从网络模式启动:

https://support.us.ovhcloud.com/hc/en-us/articles/360002065130-How-to-Boot-a-Server-in-Network-Mode

独立服务器连接到vRack

https://support.us.ovhcloud.com/hc/en-us/articles/360001410984-How-to-Connect-a-Dedicated-Server-to-vRack

虚拟化的VM连接到网络

https://support.us.ovhcloud.com/hc/en-us/articles/360002175944-How-to-Connect-a-VM-to-the-Internet-Using-VMware-ESXi-6-5

OVH的服务器自带软Raid的问题

HostingLeave a comment

OVH的服务器比较有意思，给的配置都会考虑冗余，因此每种硬盘都会给两个，默认给你组成软raid

刚开始我也在犹豫，能不能不要软raid? 因为虚拟化软件esxi不支持软raid， proxmox 的默认zfs 比软raid 要成熟很多

现在答案出来了，这是可以的. 如果你使用OVH的系统来安装OS但是又不想组软raid，那么在选择使用的硬盘的时候选择1，这样就不会组软raid了

另外如果你是使用IPMI来安装OS的话，那么就更简单了，正常安装OS就可以了

OVH的小鸡benchmark

Benchmark, HostingLeave a comment

以前没有用过NVME，这次的OVH的服务器的SSD是NVME的，赶紧装个VM测试下IO

测试所使用的程序:

wget -qO- bench.sh | bash

下面是结果:

----------------------------------------------------------------------
CPU model : Intel(R) Xeon(R) E-2236 CPU @ 3.40GHz
Number of cores : 8
CPU frequency : 3407.998 MHz
Total size of Disk : 22.3 GB (1.8 GB Used)
Total amount of Mem : 7987 MB (183 MB Used)
Total amount of Swap : 7628 MB (0 MB Used)
System uptime : 0 days, 3 hour 40 min
Load average : 0.00, 0.00, 0.00
OS : Debian GNU/Linux 9
Arch : x86_64 (64 Bit)
Kernel : 4.9.0-12-amd64
----------------------------------------------------------------------
I/O speed(1st run) : 1.3 GB/s
I/O speed(2nd run) : 1.3 GB/s
I/O speed(3rd run) : 1.3 GB/s
Average I/O speed : 1331.2 MB/s
----------------------------------------------------------------------
Node Name IPv4 address Download Speed
CacheFly 205.234.175.175 114MB/s
Linode, Tokyo2, JP 139.162.65.37 9.46MB/s

可以看到，IO读写能够到1.3GB/s…比sata ssd 要快1倍，这是很爽的

OVH安装ESXi或者Proxmox后，使用Failover IP来创建VM

HostingLeave a comment

OVH的failover 使用在虚拟化的VM中比较多，比如说ESXi的VM或者Proxmox的VM

按照OVH的官方文档，在VM上配置failover IP时，可以使用如下的信息:

IP: 你想要使用的failover IP

netmask: 255.255.255.0

Gateway: 你的服务器的主IP的前三位，第四位是254

举个例子，如果你的服务器的主IP是91.34.67.123， 那么gateway 的IP就是91.34.67.254

这个写法是OVH官方推荐的，没有任何问题, 但是前提是VM已经创建好了可以这么配置. 

但是在实际使用的时候，就会出现了大问题. 这个问题主要是指，在安装centos或者debian, ubuntu的时候，我们一般都是用netinstall 的ISO来进行最小化安装.在安装的过程中，都是需要配置IP来访问网络下载组件的.

Linux系统，默认的情况下是不允许IP和gateway的IP不在一个网段的，这个规则的大部分情况下没有任何问题. 但是在OVH或者scaleway上，就会有问题. 因为你的OVH的服务器的主IP和你分配得到的failover 的IP往往不是一个网段的. 如果下下面的情况很常见:

比如说OVH服务器的主IP是54.23.66.78， 分配的failover IP是91.56.33.78。按照上面的例子，我们应该这样配置VM的IP:

IP: 91.56.33.78

netmask: 255.255.255.0

gateway IP: 54.23.66.254

但是在用netinstall ISO 进行系统安装的时候，系统会告诉你无法访问网络，因为IP 和gateway IP不在一个网段. 那么有没有解决办法呢？很简单，我们可以设置netmask为255.255.255.255， gateway的IP就是failover IP本身，这样也是可以访问网络的. 按照上面的例子，我们需要这样配置:

IP:91.56.33.78

netmask: 255.255.255.255

gateway ip: 91.56.33.78

这种办法是可以访问网络，但是请不要长期使用，因为OVH会封掉这种流量。因此建议在系统完成后，编辑IP配置，还是按照OVH的官方文档来.

 

OVH服务器的坑解析

Hosting, , Leave a comment

无意中找到了一个OVH的老帐号，购买了一台服务器，订单很快就通过了.

OVH的服务器，其实价格并不便宜，而且还有不菲的初装费. 但是IP的价格便宜，每个IP只收3美金的初装费，每个月就不需要再另外付费了. 一台服务器最多可以添加255个IP.

OVH的网站上写着服务器都支持IPMI，我以为最起码都是supermicro的服务器呢。。后来才发现我想多了。。。

OVH的IPMI文档:

https://support.us.ovhcloud.com/hc/en-us/articles/360000108630-How-to-Install-an-OS-with-IPMI

其实这个文档里面已经透露出来OVH使用的是什么服务器了.

我买的是advance-2型号的服务器，打开IPMI我就傻眼了，并不是熟悉的Supermicro IPMI界面。。。而是ASRACK的主板

OVH的服务器主要使用两种主板，一个ASRACK的廉价主板，一个是supermicro的主板

购买之前一定要问好了是哪种服务器，supermicro要比asrock的好很多

但是实际使用过程中，我发现asrack 的IPMI要比supermicro 的稳定很多

OVH 使用的NVME SSD 都是WD的CL SN720，非常不错，算是企业级的SSD了

OVH的各站点的区别

HostingLeave a comment

从服务器的数量上来说，OVH应该是世界第一大IDC，一共有30个数据中心外加34个PoP

OVH的站点众多，很多人上来就会迷糊了。。。其实主要有以下区别:

  1. OVH的world主站，应该是OVH Canada在运营
  2. OVH US是一个单独的brand，由OVH US单独运营，和OVH world的账户不通用. OVH US 经常会有很好的sale和 best value 出现，因此注册一个OVH US 的账号还是很有必要的. OVH US的账号可以买OVH全球的服务器，除了亚洲dd(新加坡和悉尼)
  3. OVH.ie, 国人最喜欢的欧洲站点，好搞免税
  4. OVH.com/fr, OVH的大本营，经常会有很好的sale出现，但是是法语

 

Hostloc上很多人喜欢去注册ovh.ie然后搞免税. 如果没有任何sale的话，全球任何一个站点，不论是美元计费还是欧元计费，基本价格都是一样的. 所以正常购买的话，直接买world站的服务器就好了，还不需要搞免税. 但是可能会需要验证身份, 这个对于正规做网站的公司和个人来说没有什么影响.

OVH的欧洲账户直接购买就可以了，不需要验证账户。但是默认都有VAT的存在，需要提交身份认证搞免税. 其实我个人觉得不如在world主站买就好了.

Quadranet 服务器benchmark

BenchmarkLeave a comment

看到hostloc， quadranet的官方发布了一个sale，最近正好缺多IP的服务器，于是就订了一台跑一些服务。下面先做一些基本的benchmark，然后就要安装ESXi了

使用的程序:

wget -qO- bench.sh | bash

下面是结果:

----------------------------------------------------------------------
CPU model : Intel(R) Xeon(R) CPU E3-1240 v6 @ 3.70GHz
Number of cores : 8
CPU frequency : 799.890 MHz
Total size of Disk : 278.0 GB (1.7 GB Used)
Total amount of Mem : 15834 MB (232 MB Used)
Total amount of Swap : 2047 MB (0 MB Used)
System uptime : 0 days, 6 hour 45 min
Load average : 0.04, 0.04, 0.05
OS : CentOS 7.7.1908
Arch : x86_64 (64 Bit)
Kernel : 3.10.0-1062.12.1.el7.x86_64
----------------------------------------------------------------------
I/O speed(1st run) : 316 MB/s
I/O speed(2nd run) : 317 MB/s
I/O speed(3rd run) : 318 MB/s
Average I/O speed : 317.0 MB/s

—————

用的是老款的intel s3500， 速度勉强可以吧，基本保持在321MB/s左右

检查一下硬盘信息:

[root@lax ~]# smartctl -a /dev/sda
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-1062.12.1.el7.x86_64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family: Intel 730 and DC S35x0/3610/3700 Series SSDs
Device Model: INTEL SSDSC2BB300G4
Serial Number: BTWL40210787300PGN
LU WWN Device Id: 5 5cd2e4 04b56befb
Firmware Version: D2010370
User Capacity: 300,069,052,416 bytes [300 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 T13/2015-D revision 3
SATA Version is: SATA 2.6, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Feb 24 19:41:04 2020 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x79) SMART execute Offline immediate.
No Auto Offline data collection support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 2) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0032 100 100 000 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 34840
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 37
170 Available_Reservd_Space 0x0033 100 100 010 Pre-fail Always - 0
171 Program_Fail_Count 0x0032 100 100 000 Old_age Always - 0
172 Erase_Fail_Count 0x0032 100 100 000 Old_age Always - 0
174 Unsafe_Shutdown_Count 0x0032 100 100 000 Old_age Always - 35
175 Power_Loss_Cap_Test 0x0033 100 100 010 Pre-fail Always - 637 (204 414)
183 SATA_Downshift_Count 0x0032 100 100 000 Old_age Always - 2
184 End-to-End_Error 0x0033 100 100 090 Pre-fail Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
190 Temperature_Case 0x0022 081 081 000 Old_age Always - 19 (Min/Max 17/20)
192 Unsafe_Shutdown_Count 0x0032 100 100 000 Old_age Always - 35
194 Temperature_Internal 0x0022 100 100 000 Old_age Always - 28
197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 0
199 CRC_Error_Count 0x003e 100 100 000 Old_age Always - 4
225 Host_Writes_32MiB 0x0032 100 100 000 Old_age Always - 61519
226 Workld_Media_Wear_Indic 0x0032 100 100 000 Old_age Always - 911
227 Workld_Host_Reads_Perc 0x0032 100 100 000 Old_age Always - 84
228 Workload_Minutes 0x0032 100 100 000 Old_age Always - 2090316
232 Available_Reservd_Space 0x0033 100 100 010 Pre-fail Always - 0
233 Media_Wearout_Indicator 0x0032 100 100 000 Old_age Always - 0
234 Thermal_Throttle 0x0032 100 100 000 Old_age Always - 0/0
241 Host_Writes_32MiB 0x0032 100 100 000 Old_age Always - 61519
242 Host_Reads_32MiB 0x0032 100 100 000 Old_age Always - 341415

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

再看看sdb:

[root@lax ~]# smartctl -a /dev/sdb
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-1062.12.1.el7.x86_64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family: Intel 730 and DC S35x0/3610/3700 Series SSDs
Device Model: INTEL SSDSC2BB300G4
Serial Number: BTWL347206YW300PGN
LU WWN Device Id: 5 5cd2e4 04b53fc0e
Firmware Version: D2010370
User Capacity: 300,069,052,416 bytes [300 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 T13/2015-D revision 3
SATA Version is: SATA 2.6, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Feb 24 19:43:51 2020 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x79) SMART execute Offline immediate.
No Auto Offline data collection support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 2) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0032 100 100 000 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 39582
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 59
170 Available_Reservd_Space 0x0033 100 100 010 Pre-fail Always - 0
171 Program_Fail_Count 0x0032 100 100 000 Old_age Always - 0
172 Erase_Fail_Count 0x0032 100 100 000 Old_age Always - 0
174 Unsafe_Shutdown_Count 0x0032 100 100 000 Old_age Always - 57
175 Power_Loss_Cap_Test 0x0033 100 100 010 Pre-fail Always - 629 (226 417)
183 SATA_Downshift_Count 0x0032 100 100 000 Old_age Always - 0
184 End-to-End_Error 0x0033 100 100 090 Pre-fail Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
190 Temperature_Case 0x0022 083 083 000 Old_age Always - 17 (Min/Max 16/17)
192 Unsafe_Shutdown_Count 0x0032 100 100 000 Old_age Always - 57
194 Temperature_Internal 0x0022 100 100 000 Old_age Always - 26
197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 0
199 CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0
225 Host_Writes_32MiB 0x0032 100 100 000 Old_age Always - 4055029
226 Workld_Media_Wear_Indic 0x0032 100 100 000 Old_age Always - 16179
227 Workld_Host_Reads_Perc 0x0032 100 100 000 Old_age Always - 21
228 Workload_Minutes 0x0032 100 100 000 Old_age Always - 2374838
232 Available_Reservd_Space 0x0033 100 100 010 Pre-fail Always - 0
233 Media_Wearout_Indicator 0x0032 085 085 000 Old_age Always - 0
234 Thermal_Throttle 0x0032 100 100 000 Old_age Always - 0/0
241 Host_Writes_32MiB 0x0032 100 100 000 Old_age Always - 4055029
242 Host_Reads_32MiB 0x0032 100 100 000 Old_age Always - 1091089

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

/dev/sdb的media_wearout_indicator 是85，而非100，表明这个 ssd 硬盘已经开始downgraded

给quadranet 发了ticket 要求更换，等等看吧

经过好几天的communication，QN最后终于换了一个新的SSD给我，并且升级到了1TB SSD.

[root@lax ~]# smartctl -a /dev/sda
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-1062.12.1.el7.x86_64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family: Crucial/Micron BX/MX1/2/3/500, M5/600, 1100 SSDs
Device Model: CT1000MX500SSD1
Serial Number: 1949E22DBD7F
LU WWN Device Id: 5 00a075 1e22dbd7f
Firmware Version: M3CR023
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-3 T13/2161-D revision 5
SATA Version is: SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Thu Feb 27 17:48:28 2020 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x80) Offline data collection activity
was never started.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 0) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 30) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x0031) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 100 100 000 Pre-fail Always - 0
5 Reallocate_NAND_Blk_Cnt 0x0032 100 100 010 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 8
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 3
171 Program_Fail_Count 0x0032 100 100 000 Old_age Always - 0
172 Erase_Fail_Count 0x0032 100 100 000 Old_age Always - 0
173 Ave_Block-Erase_Count 0x0032 100 100 000 Old_age Always - 0
174 Unexpect_Power_Loss_Ct 0x0032 100 100 000 Old_age Always - 1
180 Unused_Reserve_NAND_Blk 0x0033 000 000 000 Pre-fail Always - 47
183 SATA_Interfac_Downshift 0x0032 100 100 000 Old_age Always - 0
184 Error_Correction_Count 0x0032 100 100 000 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
194 Temperature_Celsius 0x0022 067 066 000 Old_age Always - 33 (Min/Max 0/34)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 100 100 000 Old_age Always - 0
202 Percent_Lifetime_Remain 0x0030 100 100 001 Old_age Offline - 0
206 Write_Error_Rate 0x000e 100 100 000 Old_age Always - 0
210 Success_RAIN_Recov_Cnt 0x0032 100 100 000 Old_age Always - 0
246 Total_Host_Sector_Write 0x0032 100 100 000 Old_age Always - 7136328
247 Host_Program_Page_Count 0x0032 100 100 000 Old_age Always - 128446
248 FTL_Program_Page_Count 0x0032 100 100 000 Old_age Always - 626

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]

SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Completed [00% left] (0-65535)
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

 

但是分区记录表很奇怪，我这里记录一下:

[root@lax ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/sda: 1000.2 GB, 1000204886016 bytes, 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: CC49A639-0ABB-4FC8-9CE4-9CB5D28B7ED7


# Start End Size Type Name
1 2048 4095 1M BIOS boot
2 4096 2101247 1G Microsoft basic
3 2101248 6295551 2G Microsoft basic
4 6295552 10489855 2G Linux swap
5 10489856 1953523711 926.5G Microsoft basic

Nginx Websocket 配置

NginxLeave a comment

Nginx 支持websocket，可以用下面的example:

location / { 
       proxy_redirect off;
       proxy_pass http://127.0.0.1:26534; 
       proxy_http_version 1.1;
       proxy_set_header Upgrade $http_upgrade;
       proxy_set_header Connection "upgrade";
       proxy_set_header Host $http_host;
}

26534表示任意端口