Programming VIP

High availability load balancer under public cloud (Huawei) High available load balancer option VIP+NGINX node ip node1 10.0.0.11 node2 10.0.0.12 node3 10.0.0.13 VIP 10.0.0.10 It is easy to operate on the virtual machine. For details, see Nginx and keepalived of Beijing strivers to achie ...

Web crawler, it sounds mysterious, but it is also so. In short, as long as the website has open port, users can visit the website, no matter how good the anti climbing mechanism of the website is, as long as your technology is enough, there will always be a chance to crack it. In other words, it's not t ...

I developed an Ethereum block resource manager in PHP and successfully established JSON-RPC communication with my server Geth node. However, when I tried to find the last block, I was in trouble. I am here https://ethereum.gitbooks.io/frontier-guide/content/rpc.html I've read a lot in, but I don't have any way to find out which of the Ethereum ...

I want to access a URL that requires a username/password.I want to try it curl Access it.Now I'm doing something similar: curl http://api.somesite.com/test/blah?something=123 I got an error.I think I need to specify a username and password as well as the above commands. How can I do this? ...

Docker Native Layout Tool 1. docker-compose concept The Compose default management object is the project, which manages the life cycle of a set of containers in the project through subcommands. The Compose project is implemented by Python, which calls the API provided by the Docker service to manage containers. Configuration steps 1. Install D ...

Wilcoxon's sign rank test It is suitable for paired comparison in T-test, but it doesn'T need to find that the difference between pairs of data obeys normal distribution, only requires symmetrical distribution. Verify that the difference between pairs of observations comes from a population with a mean of 0 (the population tha ...

Nginx access log 1. Open the configuration file and search for log? Format vim /usr/local/nginx/conf/nginx.conf 2. Meaning of common variables in access log $remote_addr: client IP (public IP) $HTTP "X" forwarded "for: IP of proxy server $time_local: server local time $host: access host name (domain name) $request_uri: url add ...

Example topology: DR1 and DR2 deploy keepalived and lvs as the master-slave or master architecture, and RS1 and RS2 deploy nginx to build web sites. Note: the time of each node needs to be synchronized (ntpdate ntp1.aliyun.com); turn off firewalld (systemctl stop firewalld.service, systemctl disable firewalld.service), and set selinux to allow ...

Nginx's location implements fine-grained processing of requests, some URI s return static content, some distribute to back-end servers, and so on. Understand its matching rules thoroughly today An example of the simplest location is as follows server { server_name website.com; location /admin/ { # The configuration you plac ...

Explain httpstat is a python script, which reflects curl statistical analysis in a wonderful and proper way. It is a single script, compatible with Python 3, and does not need to install additional software (dependency) on the user's system. In essence, it is an encapsulation of cURL tool, which means you can use several valid ...