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[TOC]

linux

Linux Performance

操作系统

1. CentOS

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loads()：将json数据转化成dict数据
dumps()：将dict数据转化成json数据
load()：读取json文件数据，转成dict数据
dump()：将dict数据转化成json数据后写入json文件

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package main

import (
	"fmt"
	"runtime"
	"time"
)

func main() {
	var array [10]int

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mongoimport --host --port --db --collection

mongoimport --mode upsert --host dora1 --port 26011 --db boots --collection flavor --file test.json

-h,--host ：代表远程连接的数据库地址，默认连接本地Mongo数据库；
--port：代表远程连接的数据库的端口，默认连接的远程端口27017；
-u,--username：代表连接远程数据库的账号，如果设置数据库的认证，需要指定用户账号；
-p,--password：代表连接数据库的账号对应的密码；
-d,--db：代表连接的数据库；
-c,--collection：代表连接数据库中的集合；

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安装 fzf
git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
~/.fzf/install

安装 tmux
yum install -y tmux

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[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0

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DEVICE=bond0
NAME=bond0
BOOTPROTO=none
USERCTL=no
ONBOOT=yes
BONDING_MASTER=yes
IPADDR=10.32.254.11
NETMASK=255.255.255.0
BONDING_OPTS="mode=4 miimon=100 xmit_hash_policy=layer3+4"

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def tes(node, inventory):
    from ansible.parsing.dataloader import DataLoader
    from ansible.vars.manager import VariableManager
    from ansible.inventory.manager import InventoryManager
    from ansible.vars.hostvars import HostVars

    dl = DataLoader()
    #dl.load_from_file("vars.yml")
    im = InventoryManager(loader=dl, sources=[inventory_dir])
    vm = VariableManager(loader=dl, inventory=im)

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driftfile /var/lib/ntp/drift
restrict default nomodify notrap nopeer noquery

restrict 127.0.0.1 
restrict ::1

# Hosts on local network are less restricted.
#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap

server 135.224.18.20 iburst

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# centos7 ansible 2.8.2+
"ansible_distribution": "CentOS",
"ansible_distribution_file_parsed": true,
"ansible_distribution_file_path": "/etc/redhat-release",
"ansible_distribution_file_variety": "RedHat",
"ansible_distribution_major_version": "7",
"ansible_distribution_release": "Core",
"ansible_distribution_version": "7.5