1, first download the image to local. https://hub.docker.com/r/gettyimages/spark/~$ Docker Pull Gettyimages/spark2, download from https://github.com/gettyimages/docker-spark/blob/master/docker-compose.yml to support the spark cluster DOCKER-COMPOSE.YML fileStart it$ docker-compose Up$ docker-compose UpCreating spark_master_1Creating spark_worker_1Attaching to Spark_master_1, spark_worker_1master_1 | 16/10/29 13:25:05 INFO Master. master:started daemon with process name: [Email protected]master_
1. server-side configurationExperimental environment system version:CentOS Linux release 7.3.1611 (Core)1)Install packagesYum-y Install TARGETCLI2)to create an iSCSI storage to outputThere are several types of devices that can be output:A, LVM coil equipment;B, a block device composed of files (after tgtimg tools processed);C, a single partition;D, the entire disk;E, RAID a volume device consisting of;An LVM logical volume is prepared here, as follows:[[emailprotected]conf.d]#lvdisplay---Logical
1. Compress the MyData directory below the/home directory to Mydata.zipZip-r Mydata.zip MyData #压缩mydata目录2. Unzip the mydata.zip under the/home directory into the Mydatabak directoryUnzip mydata.zip-d Mydatabak3, the home/home directory below the ABC folder and 123.txt compression becomes abc123.zipZip-r abc123.zip ABC 123.txt4. Extract the Wwwroot.zip from the/home directory directly into the/home directo
here, and if not, the dynamic ACL source address will be any, then the dynamic ACL is meaninglessLine vty 4Login LocalRotary 1 with Telnet management, port is 30014, int s1/0IP Add 10.10.1.1 255.255.255.252No shutIP access-group 101 inv. Reflexive ACLSBasic idea: Intranet can access the external network, but the outside network does not allow access to the intranet, intranet access to the response data can beExample:One, IP access-list extended outbound create ACL for data outpermit TCP Any any
An important part of the administrator's job is "manage accounts". Because the entire system is your management, and all the general user's account application must be assisted by you. In the first two blogs, we introduced the basic permissions of the file and special permissions, but also has been emphasizing the reusability of permissions, but the traditional permissions only three kinds of identities (ower, Group, others) with read, write, execute (R, W, x) Three kinds of permissions, I don't
One, zookeeper Authority management mechanism
1.1 Rights Management ACL (Access control List)
ZooKeeper's rights management is the ACL control function, which uses ACLs to control access to the Znode. The implementation of ACLs is very similar to UNIX file access licenses: It uses a license bit to allow or disallow permission control for different operations on a node. However, unlike the standard UNIX li
View a topic in text format -Rybench Technical ForumHttp://www.rytto.com/bbs/index.asp)--Professional tool software/Program(Http://www.rytto.com/bbs/list.asp? Boardid = 16)----China part definition of Gaussian Lenge coordinate system (Beijing Wusi and Xi'an 80)(Http://www.rytto.com/bbs/dispbbs.asp? Boardid = 16 id = 14)
-- Author: ryttoadmin-- Release Date: 15:30:42 -- China part definition of Gaussian Lenge coordinate system (Beijing Wusi and Xi'an 80)Add it to the coordinate
In PHP development, the traditional file Upload type verification method is based on the file extension (such as the pathinfo function), it is easy to modify the extension to deceive me to write a verification class here, determine the file format through the file header. (It is not secure. if the user spoofs the file header, it can pass verification)
The code is as follows:
/*** Document type** @ Author Silver*/Class FileTypeValidation{// File type, different header informationPrivate stat
I wrote a verification class here to determine the file format through the file header. (It is not secure. If the user spoofs the file header, it can also pass verification)
Copy codeThe Code is as follows: /**
* Document Type
*
* @ Author Silver
*/
Class FileTypeValidation
{
// File type, different header information
Private static $ _ fileFormats = Array (
'Jp2' => '0000000c6a502020', Apos; 3gp5 apos; = apos; 0000001866747970 apos ',
'M4a '=> '00000020667479704d3441 ',
'Ico '=> '
In PHP development, the traditional file Upload type verification method is based on the file extension (such as the pathinfo function), it is easy to modify the extension to deceive me to write a verification class here, determine the file format through the file header. (It is not secure. if the user spoofs the file header, it can pass verification)
The code is as follows:
/**
* Document type
*
* @ Author Silver
*/
Class FileTypeValidation
{
// File type, different header information
Privat
PHP file type verification class function based on the file header. I wrote a verification class here to determine the file format through the file header. (It is not secure. if the user spoofs the file header, it can also pass verification.) copy the code as follows. I wrote a verification class here to determine the file format through the file header. (It is not secure. if the user spoofs the file header, it can pass verification)
The code is as follows:
/*** Document type** @ Author Sil
. Standard Filter
48.2. Enable standard filters in HTTP
48.3. Set the location for the custom filter
47.1. Antpathrequestmatcher
47.2. Regexrequestmatcher
46.1. Limitations of the default policy
46.2. Record user name and IP
46.3. Change Control class
46.4. Modify the configuration file
45.1. Modify filter Support forward
45.2. Customizing the login page
45.3. Display password error message
44.1. Database structure
44.2. Modify the configuratio
the access boundary. Hackers can use this to write too much content to crash the system or execute illegal commands.Layer 2 attacks
ARP Spoof is ARP spoofing. When a machine in the network sends an ARP request to find the gateway address, the hacker pretends to be an ARP reply and tells his MAC address to become the gateway.
Mac flooding utilizes this principle. When the MAC address table of the switch is full, when it is subject to a MAC address that has never been seen before, it uses the
ACL--The normal permission setting method can only modify the file owner, the group and other people's permissions, if you want to set the file permissions more complex, more detailed words, such as to make each user have different permissions, the traditional method of modifying permissions is not enough, then we need to use Access Control List (ACL) .
Directory
What is an ACL
Turn on ACL method
Usage and function of ACLs
will be released, but if the rule is not met, the request is interrupted directly.2) requests that conform to ACL rules are submitted to the backend backend server cluster, which enables load balancing based on ACL rules.ACL rules in Haproxy are often used in frontend segments, using the following methods:ACL-Custom ACL-name ACL method-I [Matching path or file]whichACL: is a keyword that represents the beginning of a defined ACL rule. You need to follow the custom ACL name later.ACL method: Th
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