[ FreeBSD , Jail , Git , DB , NFS ]

各类故障及技巧的说明汇总

troubleshooting

Jail下的postgresql无法正常启动

发现问题： create shared memory segment faile

解决方法： jail -m jid=3 allow.sysvipc=1 sysctl security.jail.sysvipc_allowed=1

Pgsql 添加用户

su - postgres

createdb -O user dbname

createdb dbname
GRANT permissions ON DATABASE dbname TO username;

FreeBSD升级版本之后PKG不可用

先强制删除pkg, 然后重新安装.

pkg remove -f pkg

pkg install pkg

Tips

SSH密钥登陆

ssh-keygen cat ~/.ssh/id_rsa.pub > ~/.ssh/authorized_keys check the permission of : .ssh == 700 authorized_keys == 600

and modify the sshd_config to allow root login

使用CertBOt来更新ssl证书

安装certbot,推荐使用nginx插件. pkg install py37-certbot-nginx 配置:

#certbot --nginx

根据提示信息推动即可.

Github的使用

install the git tools is the first step

pkg install -y git

as you know , you need config the git like thie :

git config –global user.name “yourusername”
git config –global user.email “youremailaddress”

you can use git config --list to check .

the config file is in the floder:

#~/.gitconfig or #repo-dir/.git/config

initialization the folder

create the folder:

mkdir /opt/content.git
cd /opt/content.git
git init
git add .
git commit -m 'from BSD'

download the README.md to local

modify if you need

git add README.md

or git add . add all file in the folder to repo

add the remote origin repo

git remote add origin git@github.com:pstreem/azming.content.git

new folder to clone the repo from github

mkdir ~/some+folder
cd some+folder
git init
git remote add origin git@github.com:pstreem/azming.blog.git
git pull origin master
> if you want use git pull replace the command above 
git commit -m 'commit from gitlog'
git push -u origin master

pull/push , sync file

first , you can clone the remote repo to local :

git clone git@github.com:michaelliao/gitskills.git or use https protocal like this : git clone https://github.com/pstreem/azming.content.git

git pull origin master

git push -u origin master

some useful commands

git log git status git diff

pull 到local做merge

git pull origin master –allow-unrelated-histories

upgrade FreeBSD from Version A -> B

double check the version

freebsd-version

11.2-RELEASE-p7

uname -mrs

FreeBSD 11.2-RELEASE-p7 amd64

update the binary use freebsd-update

freebsd-update fetch install

pkg update && pkg upgrade

use freebsd-update to upgrade

freebsd-update -r 12.0-RELEASE upgrade

commit the upgrade

freebsd-update install

reboot the system & freebsd-update install again

upgrade package

after upgrade system , you need upgrade the pkg again use the command as below :

pkg-static install -f pkg pkg update pkg upgrade

after pkg upgrade , please use :

freebsd-update install double check again

double check the system version

freebsd-version

uname -mrs

freebsd-update fetch install

makesure the system is normally

ps auxw sockstat -l netstat -anp top

FreeBSD Bhyve passthru

手动方式

devctl detach pci0:4:0:0
devctl set driver pci0:4:0:0 ppt
pciconf -lv

modify the configuration in vm, and the line into the conf file:

passthru0="4/0/0"

随系统配置

/boot/loader.conf

pptdevs="0/20/0"

bhyve VM config:

passthru0="0/20/0"