Programmer Group

1. playbook cycle #vi/etc/ansible/while.yml //Add the following --- - hosts: yw02   user: root   tasks:     - name: change mode for files       file: path=/tmp/{{ item }} mode=600       with_items:         - 1.txt         - 2.txt         - 3.txt Description: A file module is used here, followed by a path, if it is a file, you can write/tmp/1. ...

Article 3 of the seriesTo undertake the above: RXjava parsing (2) I gave you the source code of RXjava and this interview, and you told me that I couldn't get an offer?(leave the GitHub link, and you can find the content you need to obtain such as interview)https://github.com/xiangjiana/Android-MS Back pressure problem Backpressure refers to ...

Static route: the route entry written manually by a person is called static route, which is permanent and effective, with the highest priority and efficiency. What's a router for? Connect networks of different address segments. Block webcasts of different address segments. The router has multiple interfaces, at least two, one LAN on one side. ...

1. Resource Objects for k8s Deployment, Service and Pod are the three core resource objects of k8s Deployment: The controller of the most common stateless application that supports scaling, rolling upgrade, and so on. Service: Provides a fixed access interface for flexible, life-cycle PD objects for service discovery and service access. Pod: ...

ls #List all files starting with a and o [root@sh02-hap-bss-prod-consul03 ~]# ls anaconda-ks.cfg nss-pam-ldapd-0.9.8-1.gf.el7.x86_64.rpm openldap-clients-2.4.44-21.el7_6.x86_64.rpm original-ks.cfg tools [root@sh02-hap-bss-prod-consul03 ~]# ls [ao]* anaconda-ks.cfg openldap-clients-2.4.44-21.el7_6.x86_64.rpm original-ks.cfg #[0-9] for a ...

Configure corosync Install corosync pacemaker in both server5 and server6 yum install corosync pacemaker -y Edit the corosync configuration file in server5 mv /etc/corosync/corosync.conf.example /etc/corosync/corosync.conf vim /etc/corosync/corosync.conf # Please read the corosync.conf.5 manual page compatibility: whitet ...

At present, the latest version of ArcGIS for Android on the official website has been updated to 100.3. Today, use the latest version of sdk to create a map demo application, and use the API to configure the downloaded sdk. Note that you need to register a developer account for the sdk you downloaded. Download it in the followi ...

Learning Notes: docker deploys highly available MySQL clusters Environmental Science CentOS 7.5 (IP:106.xx.xx.xx) Docker 18.06.0-ce 1. docker settings # Define Subnets docker network create --subnet=172.18.0.0/16 net1 2. mysql Cluster (5) Using the Percona-XtraDB-Cluster scheme Connect 106.xx.xx.xx:30001-3000 ...

When loading android pictures, due to the limitation of the mobile screen, when many large pictures are loaded, we require equal scale, for example, according to the fixed width, equal scale height, so that the size scale of the picture gets the corresponding scale, but the picture does not change shape. Obviously, it can't be implemented accor ...

1.Redis single command usage scenario The following steps are required for a Redis client to connect to a Redis server to execute a command: The above process is called Round Trip Time (RTT), and the mget and mset commands save RTT, but most commands do not support batch operations. Redis provides services through TCP, Client initiates r ...