ansible 任务委派 delegate_to

https://www.cnblogs.com/heaven-xi/p/10420087.html

[python@heaven-00 0130]$ cat test20.yml
---
- hosts: local
tasks:
- name: mkdir document /root/test
file:
path: /root/test
state: directory
owner: root
mode: "755"

- name: jiluyi
shell: echo "1" >> /root/a.txt
delegate_to: ansible-04

- name: toush file
file:
path: /root/test/{{ ansible_hostname }}
state: touch
mode: "755"
owner: root

 

 

	# cluster-backup playbook
	# read the guide: 'op/cluster_restore.md'
	- hosts:
	- localhost
	tasks:
	# step1: find a healthy member in the etcd cluster
	- name: set NODE_IPS of the etcd cluster
	set_fact: NODE_IPS="{% for host in groups['etcd'] %}{{ host }} {% endfor %}"
	- name: get etcd cluster status
	shell: 'for ip in {{ NODE_IPS }};do
	ETCDCTL_API=3 {{ base_dir }}/bin/etcdctl
	--endpoints=https://"$ip":2379
	--cacert={{ cluster_dir }}/ssl/ca.pem
	--cert={{ cluster_dir }}/ssl/etcd.pem
	--key={{ cluster_dir }}/ssl/etcd-key.pem
	endpoint health;
	done'
	register: ETCD_CLUSTER_STATUS
	ignore_errors: true
	- debug: var="ETCD_CLUSTER_STATUS"
	- name: get a running ectd node
	shell: 'echo -e "{{ ETCD_CLUSTER_STATUS.stdout }}"
	"{{ ETCD_CLUSTER_STATUS.stderr }}"
	|grep "is healthy"|sed -n "1p"|cut -d: -f2|cut -d/ -f3'
	register: RUNNING_NODE
	- debug: var="RUNNING_NODE.stdout"
	- name: get current time
	shell: "date +'%Y%m%d%H%M'"
	register: timestamp
	# step2: backup data on the healthy member
	- name: make a backup on the etcd node
	shell: "mkdir -p /etcd_backup && cd /etcd_backup &&
	ETCDCTL_API=3 {{ bin_dir }}/etcdctl snapshot save snapshot_{{ timestamp.stdout }}.db"
	args:
	warn: false
	delegate_to: "{{ RUNNING_NODE.stdout }}"
	- name: fetch the backup data
	fetch:
	src: /etcd_backup/snapshot_{{ timestamp.stdout }}.db
	dest: "{{ cluster_dir }}/backup/"
	flat: yes
	delegate_to: "{{ RUNNING_NODE.stdout }}"
	- name: update the latest backup
	shell: 'cd {{ cluster_dir }}/backup/ && /bin/cp -f snapshot_{{ timestamp.stdout }}.db snapshot.db'