Programmer Think

GitLab CI enables you to create multiple builds and evaluate whether each code submission passes the test and the impact on your product. In the process of building, a large number of binary files will be generated. If these files are not managed correctly on a large scale, the binary file management will be confused. In order to overcome thi ...

Requirement: 1. Haproxy must be at least 1.5 to support ssl certificates2. To use ssl module, openssl software must be installed, and the version should meet the requirements openssl installation tar zxf openssl-0.9.8zh.tar.gz cd openssl-0.9.8zh ./config enable-tlsext --prefix=/usr/local/openssl no-shared make && make install_sw #The ...

  Install openvpn yum install -y epel-release yum install -y openvpn easy-rsa openssl openssl-devel lzo lzo-devel pam pam-devel automake pkgconfig After the above command is executed, there will be a directory of / etc/openvpn, where we usually put configuration files. 1. View the openvpn version: [root@openvpn ~]# openvpn --version |h ...

In daily monitoring, health monitoring is very important for services. Most of its monitoring methods are to monitor service ports and service processes, usually only one of them needs to be monitored. blackbox_exporter is one of the official exporters of Prometheus, which can provide monitoring data collection of http, dns, tcp and icmp Blac ...

1. Difference between Yum and rpm The yum command will find the dependency from the image itself when installing the software, and then resolve it. If it fails to resolve it, an error will be reported The rpm command does not solve the dependency when installing the software. It is applicable to the installation of all softw ...

1. Count the number of users whose default shell is not / sbin/nologin in / etc/passwd file, and display the users [root@localhost ~]# awk -F: -v i="0" '$NF !~ "/sbin/nologin"{print ++i,$1,$NF}' /etc/passwd 1 root /bin/bash 2 sync /bin/sync 3 shutdown /sbin/shutdown 4 halt /sbin/halt 2. Find out the user name, uid and shell type with the ...

The forward proxy is a server between the client and the original server. In order to obtain content from the original server, the client sends a request to the proxy and specifies the target (the original server), and then the proxy delivers the request to the original server and returns the obtained content to the client. The client can use ...

1. Install yum repo There is no mysql in the yum source of centos (you can try to use the installation command directly: Yum install mysql server). You need to download the yum repo configuration file on mysql's official website, and then install: #download wget https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm #repo inst ...

Install ElasticSearch Pull the image and select version 6.5.0 $ docker pull elasticsearch:6.5.0 View mirroring $ docker images Start a container $ docker run --name elasticsearch -d -e ES_JAVA_OPTS="-Xms512m -Xmx512m" -p 9200:9200 -p 9300:9300 elasticsearch:6.5.0 42d639a089348b393b0cc912141ef357b6565996c5c4863e363f8729da229d7d Then visit GE ...

1. Environment: centos7.5 MySQL 5.7192.168.3.222 master192.168.3.158 slave192.168.3.223 VIPTwo: first, make two mastersTo operate both machines2.1: domain name resolution: ###vim /etc/hosts (both) 192.168.3.222 master 192.168.3.158 slave 2.2: Download MySQL 5.7 ### wget http://repo.mysql.com/mysql57-community-release-el7-8.noarch.rpm ### rpm - ...