configuration vi/etc/pki/tls/openssl.cnf find this comment out and replace it with the following sentence #default_ca = Ca_default Default_ca = Ca_linvo put [Ca_default] Copy the whole section and change it to the name above. [Ca_linvo] Modify the following parameters inside: dir =/etc/pki/ca_linvo certificate = $dir/ROOT/CA.CRT private_key = $dir/root/ca.key Save Exit 2 Create CA root-level certificate generation key:OpenSSL Genrsa-out/etc/pki/ca_linvo/root/ca.key Generate CSR:OpenSSL REQ-
certificates
1
OpenSSL req-new -x509-key server. Key 3650
Certificate Generation for clients
In addition to "server-side Certificates", "Client certificates" are also involved in some scenarios. The so-called "client certificate" is used to prove the identity of the client visitor.For example, in some financial companies ' intranet, you must deploy a "client certificate" on your computer to open the pa
-req.csr-out root/root-cert.pem-signkeyroot/root-key.pem-days 3650 export Certificate
Export the root certificate into a PKCS12 format that the browser can import
OpenSSL pkcs12-export-clcerts-in root/root-cert.pem-inkeyroot/root-key.pem-out ROOT/ROOT-ID.P12
Note: Here to enter the password, write down this password, in future configuration will use this password. To create a service-side certificate Create private key
OpenSSL genrsa-out Root/server/t
. The monitor model does not contain my monitor model, so I chose --> VESA [email = 1026X768 @ 85 kHz, 17] 1026X768 @ 85 kHz, 17 [/email] inch, update rate 85 kHz. Click OK to select the test to check whether the selection is correct. Otherwise, a black screen is displayed and the graphic interface cannot be displayed.
Install the atigraphics Card Driver (My is a card, n card installation is relatively simple, you can search for it in a hundred degrees)
1. Install make, gcc, kernel-source, xgl,
New users do not know how to install the sound card driver, Hope High hand to give instructions-general Linux technology-Linux technology and application information, the following is to read details. Liwei @ liwei-laptop :~ $ Aplay-l
* *** PLAYBACK Hardware Device List ****
Card 0: IXP [ati ixp], device 0: ati ixp AC97 [ati ixp AC97]
Subset: 1/1
Sub-device:
. dll, atioglxx. GL ,)------? Directdraw5 ~ 7|| ----? Direct3d8 or abve3D graphics card (hardware)
WhereOpengl32.dll is a software-based OpenGL developed by Microsoft.Nvntgl. dll or atiglxx. dll are OpenGL ICD drivers provided by nvidia and ATI respectively.At the same time, drivers from opengl32.dll and graphics chip vendors need to access DirectDraw and GDI32.Some OpenGL drivers even use direct3d8 or later versions.
2. Determine the ICD driver of
graphics card core chips are Nvidia and ATI graphics chipset, chip decision card grade.
One of the Nvidia graphics cards (the world's largest graphics chip research and development and manufacturers) we like to call N card, ATI graphics card (the world's only able to compete with NVIDIA graphics card chip manufacturer) We are referred to as a card.
Attached below is a list of which graphics chipsets are
Graphics performance depends on the display core, so to distinguish the graphics performance, you must know some of the graphics card parameters!
To facilitate the viewing of parameters, a tool designed to view the parameters of the graphics card is gpu-z.
Through gpu-z, we can compare the graphics card parameters to identify the performance of the graphics card, or even distinguish between true and false graphics card.
The following is a schematic diagram of the GPU (explaining only the impo
Just updated the computer, loaded with n packets, about 10 a few g content, behold, unexpectedly no sound, search a bit, to find a more reliable solution.
Enter terminal input: aplay-l If similar content is displayed successfully: card 0:IXP [ati IXP], device 0:ati IXP AC97 [ATI IXP AC97] Subdevices:1 /1 Subdevice #0: Subdevice #0 0:ixp [
install build-essential cdbs fakeroot dh-make debhelper debconf libstdc++6 dkms libqtgui4 wget execstack libe Lfg0 dh-modaliasesSecond, remove the previous ATI drive and Mesa Drive. You may not have installed it, but if you do not remove the existing graphics driver, it may cause the module to load and drive errors after installation, not normal driveRemove previous ATI drivers and Mesa drivers. Perhaps yo
, and the two must have one.
In addition, the "class" entry in this section is very important. It indicates the device type. Common types include:Display (display device, such as video card), media (such as sound card), net (network device, usually Nic), modem (modem), printer(Print Device), image (image capture device, such as a camera ).
2. Manufacturer Section
The entries in this section mainly describe all hardware devices that can be identified by the INF file, including the manufacturer of
First, GPU overviewGPU The English name is graphic processing Unit,gpu Chinese is all called Computer graphics processor, presented by Nvidia Corporation in 1999. The concept of GPU is also relative to the CPU in the computer system, due to the increasing demand for graphics, especially in home systems and game enthusiasts, and traditional CPUs can not meet the status quo, so need to provide a special processing graphics core processor. The GPU, as the "heart" of hardware graphics, is equivalent
Install and configure CentOS 6.4 AMD graphics card driver in Lenovo Y470
I said goodbye to the familiar Windows 7 and switched to CentOS for Linux, with various questions left speechless. When I write it here, I decided to change the input method. Well, what should I do? study the good input methods in Linux and try again later. First, record the major problems currently solved.
Dad gave me his Y470. I'm very happy. Y470 is configured with a quad-core eight-thread processor of i7. It shows 8 CPU
Atiesrxx.exe Delete (the key step, that is, Amd-ati graphics external Event Service files, the same way reinstall the driver will update this file, if not remove the original can not install new, will lead to a partial feature installation failure);
4, uninstall the program to uninstall AMD graphics driver (AMD Catalyst Install Manager), select the complete deletion, after the deletion will let us restart the computer.
5, after reboot, into the 360
=650; "src="%5c "title=" \ "Picture 19.png\"/"alt=" wkiol1wnnjgibmkvaaebjz6rc4u007.jpg\ "/>First, Finish Creating650) this.width=650; "src="%5c "title=" \ "Picture 20.png\"/"alt=" wkiom1wnnhtxeeifaaeuvez4fbc720.jpg\ "/>1. on disk 1, disk 2 and disk 3 each draw 12M out to do RAID-5 volume, set the volume label to H First, New RAID-5 Roll 650) this.width=650; "src="%5c "title=" \ "Picture 21.png\"/"alt=" wkiol1wnnjhtseyfaadssddqbky235.jpg\ "/>First, Select disk 1,2,3 and each to make a RAID-5 vol
KeyStore type is JKS (the default is JKs, can also be specified by the-storetype parameter), the name is Server.keystore, the first entry is created, the alias is TomcatThe command is as follows3650 " Cn=localhost,ou=unknown,o=unknown,l=unknown,st=unknown,c=unknown " 12345678 12341234The results are as followsC:\users\test>keytool-genkey-v-alias tomcat-keyalg rsa-storetype JKS-3650 " Cn=localhost,ou=unknown,o=unknown,l=unknown,st=unknown,c=unknown
for a valid certificate for GitLab. If GitLab is only used within our enterprise, you can create a self-built CA and issue a certificate to GitLab.2.3.1 self-built CARoot @ test1 :~ # Mkdir-pv/etc/ssl/demoCA/{private, newcerts}Mkdir: the directory "/etc/ssl/demoCA" has been created"Mkdir: the directory "/etc/ssl/demoCA/private" has been created"Mkdir: the directory "/etc/ssl/demoCA/newcerts" has been created"Root @ test1 :~ # Cd/etc/sslRoot @ test1:/etc/ssl # (umask 077; openssl genrsa-out./dem
The first step: Establish a CA's certificate first,First, create an RSA private key for the CA,#cd/etc/pki/ca#openssl Genrsa-des3-out Ca.key 1024(Because the Ssl_module in Windows system does not support encryption keys, use OpenSSL genrsa-out ca.key 1024)The system prompts you to enter the PEM pass phrase, which is the password, and remember it when you enter it.Generates the Ca.key file and changes the file property to 400.#chmod Ca.keyYou can use the following command to view its contents,#op
understand what happened.If you need to access SVN with HTTPS set the following:1. Configure httpd.confAdd the following piles to the httpd.conf file.LoadModule Ssl_module libexec/apache2/mod_ssl.soInclude etc/apache2/ssl.conf2 Generating certificatesMkdir/usr/local/apache2/conf/ssl.crt#为你的Apache服务器创建一个RSA私用密钥OpenSSL genrsa-des3-passout pass:asecretpassword-out/usr/local/apache2/conf/ssl.crt/server.key.org 1024#用服务器RSA私用密钥生成一个证书签署请求 (csr-certificate Signing Request)OpenSSL req-new-passin pass:a
certificate:1>3650 is a 10-year certificate validity period, basically enoughOpenSSL x509-req-in ca/ca-req.csr-out ca/ca-cert.pem-signkey ca/ca-key.pem-days 36502> generate Ca-cert.cer Certificate for client ImportOpenSSL x509-req-in ca/ca-req.csr-out ca/ca-cert.cer-signkey ca/ca-key.pem-days 36504. Export the certificate to a browser-supported. P12 format: (no need to omit)OpenSSL pkcs12-export-clcerts-in Ca/ca-cert.pem-inkey ca/ca-key.pem-out ca/ca
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