ansible | 易学教程

JMESPath expression to flatten array of objects, each with nested arrays of objects

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问题 I have JSON containing an array of databases, each database has an array of users, e.g. {"databases": [ {"db": "db_a", "users": [{"name": "alice"}, {"name": "alex"}]}, {"db": "db_b", "users": [{"name": "bob"}, {"name": "brienne"}]} ]} I would like to produce a flat array of databases and users, i.e. [ {"db": "db_a", "name": "alice"}, {"db": "db_a", "name": "alex"}, {"db": "db_b", "name": "bob"}, {"db": "db_b", "name": "brienne"} ] In SQL terms this would be a cartesian join or cartesian

Installing ceph using kolla-ansible for all-in-one setup

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问题 I am trying to deploy the all-in-one configuration using kolla-ansible with ceph enabled enable_ceph: "yes" #enable_ceph_mds: "no" enable_ceph_rgw: "yes" #enable_ceph_nfs: "no" enable_ceph_dashboard: "{{ enable_ceph | bool }}" #enable_chrony: "yes" enable_cinder: "yes" enable_cinder_backup: "yes" glance_backend_ceph: "yes" gnocchi_backend_storage: "{{ 'ceph' if enable_ceph|bool else 'file' }}" cinder_backend_ceph: "{{ enable_ceph }}" cinder_backup_driver: "ceph" nova_backend_ceph: "{{ enable

平庸开发者的生存指南

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我个人认识一些非常有才华的开发人员，他们可以一帆风顺地创建极好的软件。正是这些天赋人士，使得外行人对我们这个行业充满了很高的期望。但我要说的一个可悲的事实是：并非每个人都是忍者/大师/明星开发者。我就不是这些闪耀的新星，我只是一名平庸的开发者。如果你也不是天才玩家，那么本文将指导你如何在这个行业中生存下去。最简单的事情——只要google一下我记不了很多东西。像标准库中的函数和方法、参数位置、软件包名称，样板代码等等，都在我脑容量之外。所以，我必须使用google搜索。我每天都这样做。我也一直在重复使用旧项目的代码。有时我甚至从StackOverflow或Github复制粘贴答案。是的，我的开发其实可称之为： StackOverflow驱动开发。但我并不孤单。许多其他开发人员也这样做。有一个受众面很广的twitter讨论就是由Ruby on Rails的创建者所启动的。那么，为什么一开始会认为这种行径是不好的呢？因为它有若干缺点：会导致你复制到糟糕的设计决策或易受其他人攻击的代码会形成一种依赖心态：要是我们不能google到内容，那么只能向人求助没有网就不能工作但是，我不认为这些是大问题。它甚至可以作为是你的秘密武器。我有一些建议可用于减少其负面影响。生存指南：使用IDE来获得自动完成和建议，所以你不必google编程语言的基础内容；

Why Azure Cloud Shell is creating resource group in default subscription?

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问题 I changed the subscription of the current session in Azure Cloud Shell to a different subscription using Set-AzContext as follows. But when I create a Resource Group using Ansible playbook in the same session of Azure Cloud Shell, the resource group is still created in default subscription, why? Set-AzContext -SubscriptionId "myOtherSubscription" Above command successfully changed the subscription from default to myOtherSubscription and showed the result as follows: Name Account

Concatenate strings using with_items and assign to a variable in Ansible

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问题 I need to save two 2 IPs to a variable in a vars_file when launching ec2_instances, which are used later during deployment. This is how I am saving a single server ip: - name: Save server public IP to vars file lineinfile: line="server_public_ip{{':'}} {{ item.public_ip }}" dest="{{ansible_env.HOME}}/dynamic_ips_{{ec2_environment}}" with_items: server.instances #server is registered in previous task The output I have in dynamic_ips file is server_public_ip: xxx.xxx.xx.x Now I have 2 servers

Can ansible variables be used to declare hosts in a playbook?

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问题 I have a playbook in the format below: --- - hosts: myIP tasks: - name: Install a yum package in Ansible example yum: name: ThePackageIWantToInstall state: present where myIP and ThePackageIWantToInstall are variables. When the job template runs, I would like the user in the extra variables popup to be able to go with: myIP = 192.168.1.1 ThePackageIWantToInstall = nano As the documentation doesn't provide an example of supplying a variable via a job template, is this possible? 回答1: Yes. -

Can ansible variables be used to declare hosts in a playbook?

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Can ansible variables be used to declare hosts in a playbook?

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How can I get a list of child groups in Ansible?

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问题 I have an inventory file that looks like this: [master] host01 [nl] host02 [us] host03 [satellites:children] nl us How can I get a list of groups that have satellites as their parent? I am looking for a solution that works similar to this: - debug: msg="{{ item }}" with_items: "{{ groups['satellites:children'] }}" Update: The only solution I was able to come with is this: - debug: {{ item }} with_items: "{{ groups }}" when: item != "master" and item != "satellites" and item != "all" and item

Ansible 1.9.4 : Failed to lock apt for exclusive operation

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问题 I bumped into Failed to lock apt for exclusive operation issue: https://github.com/geerlingguy/ansible-role-apache/issues/50 I posted a lot of details in GitHub. I googled a lot of "Failed to lock apt for exclusive operation" Ansible complaints, but no simple answer. Any help? 回答1: I'm also getting this error, while setting up a couple of new boxes. I'm connecting as root , so I didn't think it was necessary, but it is: become: yes Now everything works as intended. 回答2: I know this question