ansible

Facts变量
Facts变量不包含在前文中介绍的全局变量、剧本变量及资产变量之内。sVV拜客生活常识网

Facts变量不需要我们人为去声明变量名及赋值。sVV拜客生活常识网

它的声明和赋值完全有Ansible 中的 setup 模块帮我们完成。sVV拜客生活常识网

它收集了有关被管理服务器的操作系统版本、服务器IP地址、主机名，磁盘的使用情况、CPU个数、内存大小等等有关被管理服务器的私有信息。sVV拜客生活常识网

在每次PlayBook运行的时候都会发现在PlayBook执行前都会有一个Gathering Facts的过程。这个过程就是收集被管理服务器的Facts信息过程。sVV拜客生活常识网

实验sVV拜客生活常识网

[root@bogon ~]# ansible all -i  localhost, -c local -m setup
localhost | SUCCESS => {
    "ansible_facts": {
        "ansible_all_ipv4_addresses": [
            "192.168.216.133"
        ],
        "ansible_all_ipv6_addresses": [
            "fe80::486e:8249:b0e8:8cab"
        ],
        "ansible_apparmor": {
            "status": "disabled"
        },
        "ansible_architecture": "x86_64",
        "ansible_bios_date": "04/13/2018",
        "ansible_bios_version": "6.00",
        "ansible_cmdline": {
            "BOOT_IMAGE": "/vmlinuz-3.10.0-514.el7.x86_64",
            "LANG": "zh_CN.UTF-8",
            "crashkernel": "auto",
            "quiet": true,
            "rd.lvm.lv": "cl/swap",
            "rhgb": true,
            "ro": true,
            "root": "/dev/mapper/cl-root"
        },
        "ansible_date_time": {
            "date": "2022-05-17",
            "day": "17",
。。。
。。。
出一大串

如何针对性的获取facts模块中的信息
模糊匹配
获取服务器的内存情况信息sVV拜客生活常识网

[root@bogon ~]# ansible all -i  localhost, -c local -m setup  -a "filter=*memory*"
localhost | SUCCESS => {
    "ansible_facts": {
        "ansible_memory_mb": {
            "nocache": {
                "free": 645,
                "used": 331
            },
            "real": {
                "free": 507,
                "total": 976,
                "used": 469
            },
            "swap": {
                "cached": 0,
                "free": 2047,
                "total": 2047,
                "used": 0
            }
        },
        "discovered_interpreter_python": "/usr/bin/python"
    },
    "changed": false
}

获取服务器的磁盘挂载情况信息sVV拜客生活常识网

[root@bogon ~]# ansible all -i  localhost, -c local -m setup  -a "filter=*mount*"
localhost | SUCCESS => {
    "ansible_facts": {
        "ansible_mounts": [
            {
                "block_available": 223549,
                "block_size": 4096,
                "block_total": 259584,
                "block_used": 36035,
                "device": "/dev/sda1",
                "fstype": "xfs",
                "inode_available": 523958,
                "inode_total": 524288,
                "inode_used": 330,
                "mount": "/boot",
                "options": "rw,seclabel,relatime,attr2,inode64,noquota",
                "size_available": 915656704,
                "size_total": 1063256064,
                "uuid": "1154f6ac-3c7e-4be3-a9d9-3ad34dce68bc"
            },
            {
                "block_available": 4045287,
                "block_size": 4096,
                "block_total": 4452864,
                "block_used": 407577,
                "device": "/dev/mapper/cl-root",
                "fstype": "xfs",
                "inode_available": 8853899,
                "inode_total": 8910848,
                "inode_used": 56949,
                "mount": "/",
                "options": "rw,seclabel,relatime,attr2,inode64,noquota",
                "size_available": 16569495552,
                "size_total": 18238930944,
                "uuid": "0562565e-3c89-40cd-8492-a82bce391441"
            }
        ],
        "discovered_interpreter_python": "/usr/bin/python"
    },
    "changed": false
}

在playbook中使用facts变量sVV拜客生活常识网

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