#理解 changed_when failed_when become become_user ansible_become ansible_become_user static #检查group_vars中某组是否存在主机 - name: ensure only one monitoring host exists fail: msg="One, or no monitoring host may be specified." when: "groups.get(‘monitoring_servers‘, [])|length > 1" #如果不定义值,那么使用默认值 - name: set deploy dir if not presented set_fact: deploy_dir="/home/{{deploy_user}}/deploy" when: deploy_dir is not defined #禁掉swap - name: disable swap shell: "([ $(swapon -s | wc -l) -ge 1 ] && (swapoff -a && echo disable)) || echo already" ignore_errors: yes register: swapoff_result changed_when: "swapoff_result.stdout.strip() == ‘disable‘" #当set_timezone定义,设置相应时区 - name: set timezone to {{timezone}} timezone: name={{ timezone }} when: set_timezone #设置hostname - name: set hostname by ip hostname: name=ip-{{ ansible_default_ipv4.address | replace(".","-") }} register: hostname_set when: - set_hostname - "ansible_default_ipv4.address | replace(‘.‘,‘-‘) not in ansible_hostname" #设置/etc/hosts - name: inject hostname to hosts file lineinfile: dest=/etc/hosts line=‘127.0.0.1 ip-{{ ansible_default_ipv4.address | replace(\".\",\"-\") }}‘ when: set_hostname ‘#修改文件中匹配到的某行 - name:modify centos irqbalance configuration file lineinfile: dest=/etc/default/irqbalance regexp=‘(?<!_)ONESHOT=‘ line=‘ONESHOT=yes‘ when: - tuning_irqbalance_value - centos_irq_config_file.stat.exists #检查umask - name: get umask shell: umask register: umask changed_when: False - name: does the system have a standard umask fail: ‘The umask of the system ({{ umask.stdout.strip() }}) prevents successful installation. We suggest a standard umask such as 0022.‘ when: umask.stdout.strip()[-2:] not in (‘00‘, ‘02‘, ‘20‘, ‘22‘) #根据facts值,检查系统版本 - name: check system version fail: msg: "Red Hat Enterprise Linux/CentOS 6 is deprecated" when: "ansible_os_family == ‘RedHat‘ and ansible_distribution_major_version == ‘6" #检查文件挂载点 - name: detemine which mountpoint depoly dir exists on shell: "df {{ deploy_dir }} | tail -n1 | awk ‘{print $NF}‘" register: deploy_partition changed_when: False #抓取log - name: fetch pd log file fetch: src: "{{ log_dir }}/{{ inventory_hostname }}-pd.tar.gz" dest: "{{ fetch_tmp_dir }}/{{ inventory_hostname }}/" flat: yes validate_checksum: no when: "‘pd_servers‘ in group_names" #下载tidb二进制 - name: download tidb binary get_url: url: "{{ item.url }}" dest: "{{ doenloads_dir }}/{{ item.name }}-{{ item.version }}.tar.gz" checksum: "{{ item.checksum | default(omit) }}" force: yes validate_certs: no register: get_url_result until: "‘OK‘ in get_url_result.msg or ‘file already exists‘ in get_url_result.msg" retries: 4 delay: "{{ retry_stagger | random + 3 }}" with_items: "{{ tidb_packages }}" when: has_outband_network #debug - debug: msg: "run command on server: {{ disk_randread_iops.cmd }}"
原文地址:https://www.cnblogs.com/nineep/p/9065874.html
时间: 2024-10-04 23:05:48