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Install ansible apt update apt install -y software-properties-common apt-add-repository --yes --update ppa:ansible/ansible apt install -y ansible Generate key unclassified connection ssh-keygen -f ~/.ssh/id_rsa -P '' -q #Copy the ssh key to the remote host. You don't need to enter the password when ssh ssh-copy-id root@192.168.0.74 an ...

Manage large playbook s If the playbook is complex, we can divide it into smaller files (that is, decouple) for easy management. Multiple playbooks can be combined into one main playbook in a modular way, or the task list in the file can be inserted into the play. To facilitate simpler management. Include or import files Ansible can use ...

##Run tasks conditionally ####-Syntax of conditional tasks ######The when statement is used to run a task conditionally. It takes the condition to be tested as the value. If the conditions are met. Then run the task. If the conditions are not met, skip the task. ######Example: When when The value of is false Task execution will be skipped whe ...

1, Background High availability is another major feature of TiDB. All three components of TiDB/TiKV/PD can tolerate partial instance failure without affecting the availability of the whole cluster. The following describes the availability of these three components, the consequences of a single instance failure, and how to recover. TiDB T ...

Build an internal Ansible automated management platform from scratch - Chapter 1 1. Background; With the rapid technological iteration of lower and middle-level enterprise technologies and the popularity of micro-service distributed architecture, it is difficult for traditional operation and maintenance systems to initialize systems, deploy e ...

Ansible execution result information - color description; ansible ad hoc description; how to view help documents and common module details Host planning   Add user account Explain: 1. Login account used by operation and maintenance personnel; 2. All businesses are placed in the "home directory of yun users" under / app / to avoid m ...

Article directory Deploy Kube Prometheus Kube Prometheus project composition Submission of resources Modify grafana Create directory on 32.94, create pv, pvc Create svc of grafana MySQL Create cm for grafana.ini Modify the configuration in grafana deployment, add the operation of mounting configma ...

1, Manage file system 1. Creating an EXT4 file system The mkfs (Make Filesystem) command is used to create a file system (format). The basic syntax format of the mkfs command is as follows: 1) mkfs application example Format the / dev/sdb1 partition as an EXT4 file system. <! -- self planning zone -- > [root@centos01 ~]# fdisk / ...

ansible is relatively simple. playbook is used to implement more complex tasks, while Roles is used to implement more complex tasks. ansible uses modular development, which is equivalent to a collection of command parameters. https://baike.baidu.com/item/%E4%BA%91%E6%9C%8D%E5%8A%A1/7843499?fr=aladdin Se ...

The initial configuration goals to be achieved in this paper are as follows: ansible configures ssh secret login; ansible remote configuration host name; ansible controls remote hosts to add DNS resolution records to each other; ansible configures the yum mirror source on the remote host and installs some software; ansible configures time sy ...