Programmer Think

Preparation of system bottom layer Install jdk tar xvf jdk-7u79-linux-x64.tar.gz vi /etc/profile #Set JDK environment variable: add JDK environment variable setting at the end of vi /etc/profile: JAVA_HOME=/usr/local/java JRE_HOME=/usr/local/java/jre CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME ...

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 - ...

Docker swarm Swarm is a relatively simple tool released by Docker company in early December 2014, which is used to manage Docker clusters. It turns a group of Docker hosts into a single, virtual host. Swarm uses the standard Docker API interface as its front-end access portal. In other words, all kinds of Docker clients (Dock ...

Recently, we are using Grafana to show the data of elastic search. Next, I will use elastic search as the data source in Grafana to draw the IO diagram of the network and the IO diagram of the disk System: centos7.x, ip: A Installing grafana $ yum install https://s3-us-west-2.amazonaws.com/grafana-releases/release/grafana-4.6.3-1.x86_64.rpm ...

Introduction to Apache working mode 1.Apache is the most widely used and stable open source server software for today's web servers 2. There are many working modes. When the source package installs httpd, you can view the httpd-mpm.conf file, which is located in the extra/conf directory 3. At present, there are two modes: event mode: multiple ...

shallow A kind of ove Install Apache Apache is the name of a foundation. httpd is the package we want to install. In the early days, its name was Apache. Apache official website www.apache.org wget http://mirrors.cnnic.cn/apache/httpd/httpd-2.4.29.tar.gz wget http://mirrors.cnnic.cn/apache/apr/apr-1.6.3.tar.gz wget http://mirrors.cnnic.cn ...

1. Environment and conditionsMaster slave schema environment already exists host name IP address Master-slave role MHA role leo1 192.168.3.2 Master MHA-node leo2 192.168.3.3 slave MHA-node leo3 192.168.3.4 slave MHA-node,MHA-manager vip 192.168.3.6 Master-slave ensures the master-slave status is normal mysql>show slave statu ...

ceph RBD Environmental Science 192.168.126.101 ceph01 192.168.126.102 ceph02 192.168.126.103 ceph03 192.168.126.104 ceph04 192.168.126.105 ceph-admin 192.168.48.11 ceph01 192.168.48.12 ceph02 192.168.48.13 ceph03 192.168.48.14 ceph04 192.168.48.15 ceph-admin 192.168.48.56 web Create RBD Create ...

##Performance tuningOverview It's important to get the Zabbix system tuned for optimal performance. Hardware - use the fastest processor - SCSI or SAS is better than IDE (by using the utility hdparm you can significantly improve the performance of IDE disks) and SATA - 15K RPM better than 10K RPM, better than 7200 RPM - use fast RAID storage - ...

Premise: Amazon cloud has been configured to start. The inbound policy of security group is as follows: The outbound strategy is as follows: After logging in to EC2, only EC2 user can log in by default, and then switch to root: sudo su Prompt for installing docker no package docker available using yum. yum install docker -y resolvent:Add CentOS ...