fdisk add LVM to CentOS

Linux Fdisk 磁碟分割及格式化

列出 partition table(s)
# fdisk -l

格式化 /dev/sdb
# fdisk /dev/sdb
# Command (m for help): n
# Command action
   e   extended
   p   primary partition (1-4)
p
# Partition number (1-4): 1
# First cylinder (1-2610, default 1): "enter"
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-2610, default 2610): "enter"
Using default value 2610
# Command (m for help): w

將新增實體給LVM使用
# pvcreate /dev/sdb1

查詢 VG Nname
# vgdisplay

掛載新磁區到 VG
# vgextend centos /dev/sdb1

掃描新磁區是否掛載到 VG
# pvscan

顯示目前的 LVM
# lvdisplay

選擇欲加大的 LVM 掛載新磁區
# lvextend /dev/centos/usr /dev/sdb1

重新整理 LMV 大小
# xfs_growfs /dev/centos/usr

檢查 LVM 是否已正常掛載
# df -h



ref:
https://www.rootusers.com/how-to-increase-the-size-of-a-linux-lvm-by-adding-a-new-disk/

CentOS7 Sendmail test send email

# Install sendmail sendmail-cf m4
yum install sendmail sendmail-cf m4

# edit local host name
vi /etc/mail/local-host-names
xxx.com

# edit sendmail.mc
vi /etc/mail/sendmail.mc

#change 127.0.0.1 to 0.0.0.0
DAEMON_OPTIONS(`Port=smtp,Addr=0.0.0.0, Name=MTA')dnl

# change sendmail setting
m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

# setting relay
vi /etc/mail/access
Connect:xxx.com RELAY

# hash database
makemap hash access < access

# restart sendmail
systemctl restart sendmail

# test php send mail
php -a
mail('user@receiver.com', "Test email", "Test email from the Internet", null, "-f user@sender.com");

Google Drive API 重新授權

1. 移除 json
2. 使手 CLI 取得網址,再取得 code 重新授權

CentOS 7 Systemd PHP

CentOS 7 Systemd 預設會打開 PrivateTmp 需要將它關掉才能與其他服務共用 /tmp

Close Systemd PHP Private Tmp
/usr/lib/systemd/system/php-fpm.service
PrivateTmp=false

Save reload daemon
systemctl daemon-reload

Restart php-fpm
systemctl restart php-fpm.service

Getting MySQL path in command prompt

select @@basedir
select @@datadir


ref:
https://stackoverflow.com/questions/14805567/getting-mysql-path-in-command-prompt

VirtualBox CentOS 加大硬碟空間

1. 關閉虛擬機器
poweroff

2. 以指令增加資料卷容量
VBoxManage  modifyhd  "D:\VDI\CentOS7.vdi"  --resize  40960 (40G)

3. 虛擬機器設定 EFI 開機並掛載 GParted
https://downloads.sourceforge.net/project/gparted/gparted-live-stable/0.31.0-1/gparted-live-0.31.0-1-i686.iso

4. 使用 GParted 開機並 Resize 磁區後 Apply 關機, 取消虛擬機器的 EFI 開機並載卸 GParted

5. 進入系統取得 LV Path
lvdisplay 

6. 重新大小 LV Path
lvresize  -l  +100%FREE  /dev/centos/root

7. 重新大小 xfs
xfs_growfs  /dev/centos/root


ref:
http://oldgrayduck.blogspot.com/2016/07/virtualbox-centos.html