[FreeBSD] FREEBSD_12 ssh登入時免輸入密碼
#Step: 01 – FREEBSD_12 ssh登入時免輸入密碼
FreeBSD 12.1 ssh登入時免輸入密碼
FreeBSD 12.1 ssh登入時免輸入密碼
自動程式需要進到別台機器時，沒辦法使用交談式方式輸入密碼，所以要預先交換好金鑰，這是傳統的作法[1]：
1. 產生公私金錀
2. 把公錀加到目標機器中帳號中的目錄下的 ~/.ssh/authorized_keys 中
後來發現 [網管心得]ssh keygen用法@外行中的外行提供一個方法，超級好用的，例如要登入192.168.1.1這台機器：
$ ssh-copy-id username@192.168.1.1
這是一台FREEBSD的機器，我如法泡製時，出現這樣的錯誤：
ssh-copy-id root@163.22.168.5:~
Could not open a connection to your authentication agent.
no keys found
嗯，它說你要有keys？
解決方法
一、建立 KEYS PAIR
$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): <<按ENTER>>
Enter passphrase (empty for no passphrase):<<按ENTER>>
Enter same passphrase again:<<按ENTER>>
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:ADHoATx9efwH5QSRNIIvRrL3ucT0Zjx9HwYqvRHJpJU root@myhost
The key's randomart image is:
+---[RSA 2048]----+
|o...+.+..==o. |
| ooo B o.o+E |
| ...= + . *.. |
| .. + + o = . |
| o = S + o . |
| = B = . o |
| . + o + o .|
| . . . |
| |
+----[SHA256]-----+
於是乎，在家目錄下的隱藏目錄會出現兩個檔案，因為我是 root：
id_rsa
id_rsa.pub
二、把公鑰複製到遠端機器
$ ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.1.1
Password for root@servername: <<打入密碼>>
這樣就完成了，試著登入看看
$ ssh 192.168.1.1
成功連線不用再打密碼了
Freebsd MIB 檔案位置
/usr/local/share/snmp/mibs
切換 sh
chsh -s csh
https://www.cyberciti.biz/faq/howto-install-vim-text-editor-under-freebsd/
set nocompatible
" Use Vim settings, rather than Vi settings
set softtabstop=2
" Indent by 2 spaces when hitting tab
set shiftwidth=4
" Indent by 4 spaces when auto-indenting
set tabstop=4
" Show existing tab with 4 spaces width
syntax on
" Enable syntax highlighting
filetype indent plugin on
" Enable indenting for files
set autoindent
" Enable auto indenting
set number
" Enable line numbers
colorscheme desert
" Set nice looking colorscheme
set nobackup
" Disable backup files
set laststatus=2
"show status line
set statusline=%F%m%r%h%w%=(%{&ff}/%Y)\ (line\ %l\/%L,\ col\ %c)
set wildmenu
" Display command line's tab complete options as a menu.
call plug#begin('~/.vim/plugged')
Plug 'pearofducks/ansible-vim'
" install and use neomake linting
Plug 'neomake/neomake'
" install jedi auto for python
Plug 'davidhalter/jedi-vim'
" Install PEP8 support
Plug 'Vimjas/vim-python-pep8-indent'
call plug#end()
colorscheme desert
" Get help
nnoremap H :execute "!pydoc3 " . expand("")
" Run code
autocmd FileType python nnoremap :exec '!clear; python3' shellescape(@%, 1)
" Edit vimr configuration file
nnoremap ve :e $MYVIMRC
" " Reload vimr configuration file
nnoremap vw :source $MYVIMRC
curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
https://github.com/junegunn/vim-plug
更新 .vimrc
root@FreeBSD12-1-Default01:~ # cat .vimrc
set nocompatible
" Use Vim settings, rather than Vi settings
set softtabstop=2
" Indent by 2 spaces when hitting tab
set shiftwidth=4
" Indent by 4 spaces when auto-indenting
set tabstop=4
" Show existing tab with 4 spaces width
syntax on
" Enable syntax highlighting
filetype indent plugin on
" Enable indenting for files
set autoindent
" Enable auto indenting
set number
" Enable line numbers
colorscheme desert
" Set nice looking colorscheme
set nobackup
" Disable backup files
set laststatus=2
"show status line
set statusline=%F%m%r%h%w%=(%{&ff}/%Y)\ (line\ %l\/%L,\ col\ %c)
set wildmenu
"height ligth cusor
set bg=dark
set cursorline
set cursorcolumn
"
highlight CursorLine cterm=none ctermbg=236
highlight CursorColumn cterm=none ctermbg=236
" 显示tab和空格
set list
" 设置tab和空格样式
set lcs=tab:\|\ ,nbsp:%,trail:-
" 设定行首tab为灰色
highlight LeaderTab guifg=#666666
" 匹配行首tab
match LeaderTab /^\t/
" Display command line's tab complete options as a menu.
call plug#begin('~/.vim/plugged')
Plug 'pearofducks/ansible-vim'
" install and use neomake linting
Plug 'neomake/neomake'
" install jedi auto for python
Plug 'davidhalter/jedi-vim'
" Install PEP8 support
Plug 'Vimjas/vim-python-pep8-indent'
call plug#end()
colorscheme desert
" Get help
nnoremap H :execute "!pydoc3 " . expand("")
" Run code
autocmd FileType python nnoremap :exec '!clear; python3' shellescape(@%, 1)
" Edit vimr configuration file
nnoremap ve :e $MYVIMRC
" " Reload vimr configuration file
nnoremap vw :source $MYVIMRC
###############################################################################
# INPUTS #
###############################################################################
[[inputs.snmp]]
name_prefix = "exec6_"
agents = [ "172.19.26.205" , "172.19.26.206" ]
version = 2
community = "public"
interval = "60s"
timeout = "10s"
retries = 3
name = "F5_system"
[[inputs.snmp.field]]
name = "hostname"
oid = "RFC1213-MIB::sysName.0"
is_tag = true
[[inputs.snmp.field]]
name = "uptime"
oid = "1.3.6.1.4.1.3375.2.1.6.6.0"
[[inputs.snmp.field]]
name = "F5_httpRequests"
oid = "1.3.6.1.4.1.3375.2.1.1.2.1.56.0"
[[inputs.snmp.field]]
name = "F5_client_connections"
oid = "1.3.6.1.4.1.3375.2.1.1.2.1.8.0"
[[inputs.snmp.field]]
name = "F5_client_bytes_in"
oid = "1.3.6.1.4.1.3375.2.1.1.2.1.60.0"
[[inputs.snmp.field]]
name = "F5_Total_Connections"
oid = "1.3.6.1.4.1.3375.2.1.1.2.1.8.0"
[[inputs.snmp.field]]
name = "F5_New_Connects"
oid = "1.3.6.1.4.1.3375.2.1.1.2.12.8.0"
[[inputs.snmp.field]]
name = "F5_New_Accepts"
oid = "1.3.6.1.4.1.3375.2.1.1.2.12.6.0"
[[inputs.snmp.field]]
name = "F5_Synchronization_status_color"
oid = "F5-BIGIP-SYSTEM-MIB::sysCmSyncStatusColor.0"
[[inputs.snmp.table]]
name = "F5_CPU"
oid = "F5-BIGIP-SYSTEM-MIB::sysMultiHostCpuTable"
inherit_tags = [ "hostname" ]
[[inputs.snmp.table]]
name = "F5_Memory_Usage"
oid = "F5-BIGIP-SYSTEM-MIB::sysMultiHostTable"
inherit_tags = [ "hostname" ]
###############################################################################
# OUTPUTS #
###############################################################################
[outputs.influxdb]
namepass = ["exec6_*"]
urls = ["http://127.0.0.1:8086"]
precision = "s"
timeout = "5s"
retention_policy = ""
database = "exec6_telegraf"
username = "exec6_tel"
password = "password"
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