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redis获取过期时间

快乐与微笑的淘气 2024-01-13 阅读 20

Ansible 配置文件详解

常用参数详解:

[defaults]通用默认配置段;
inventory = /etc/ansible/hosts被控端 IP 或者 DNS 列表;
library = /usr/share/my_modules/Ansible 默认搜寻模块的位置;
remote_tmp = $HOME/.ansible/tmpAnsible 远程执行临时文件;
pattern = *对所有主机通信;
forks = 5并行进程数;
poll_interval = 15回频率或轮训间隔时间;
sudo_user = rootsudo 远程执行用户名;
ask_sudo_pass = True使用 sudo,是否需要输入密码;
ask_pass = True是否需要输入密码;
transport = smart通信机制;
remote_port = 22远程 SSH 端口;
module_lang = C模块和系统之间通信的语言;
gathering = implicit控制默认 facts 收集(远程系统变量);
roles_path= /etc/ansible/roles用于 playbook 搜索 Ansible roles;
host_key_checking = False检查远程主机密钥;
#sudo_exe = sudosudo 远程执行命令;
#sudo_flags = -H传递 sudo 之外的参数;
timeout = 10 SSH超时时间;
remote_user = root远程登陆用户名;
log_path = /var/log/ansible.log日志文件存放路径;
module_name = commandAnsible 命令执行默认的模块;
#executable = /bin/sh执行的 Shell 环境,用户 Shell 模块;
#hash_behaviour = replace特定的优先级覆盖变量;
#jinja2_extensions允许开启 Jinja2 拓展模块;
#private_key_file = /path/to/file私钥文件存储位置;
#display_skipped_hosts = True显示任何跳过任务的状态;
#system_warnings = True禁用系统运行 ansible 潜在问题警告;
#deprecation_warnings = TruePlaybook 输出禁用“不建议使用”警告;
#command_warnings = Falsecommand 模块 Ansible 默认发出警告;
#nocolor = 1输出带上颜色区别,开启/关闭:0/1;
pipelining = False开启 pipe SSH 通道优化;
[accelerate]accelerate 缓存加速。
accelerate_port = 5099
accelerate_timeout = 30
accelerate_connect_timeout = 5.0
accelerate_daemon_timeout = 30
accelerate_multi_key = yes

Ansible 性能调优

(1) Ansible SSH 关闭秘钥检测

host_key_checking = False

(2) OpenSSH 连接优化

sed -i '/^GSSAPI/s/yes/no/g; /UseDNS/d; /Protocol/aUseDNS no' /etc/ssh/sshd_config
/etc/init.d/sshd restart

(3) SSH pipelining 加速 Ansible

sed -i '/^pipelining/s/False/True/g' /etc/ansible/ansible.cfg

(4)Ansible Facts 缓存优化

gather_facts: nogather_facts: no
在配置文件/etc/ansible/ansible.cfg 中 defaluts 段中加入代码,如果 redis 密码为 admin,则开启 admin 密码行:
# yum install -y python-pip
# pip install redis==3.0.0
gathering = smart
fact_caching = redis
fact_caching_timeout = 86400
fact_caching_connection = localhost:6379
#fact_caching_connection = localhost:6379:0:admin
fact_caching = jsonfile
fact_caching_timeout = 86400
fact_caching_connection = /tmp
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