如果您需要將任務(wù)僅委派給第一臺(tái)服務(wù)器,并且無(wú)論當(dāng)前清單中有多少臺(tái)服務(wù)器都運(yùn)行一次task
- name: drop database
mysql_db: name={{ targetdbname }} state=absent
when: targetdeploydb == "new"
delegate_to: "{{ groups['dbserver'] | first }}"
run_once: true