Category: Linux

Autostart icecast using systemd

To autostart icecast using systemd, create a unit file

vi /etc/systemd/system/icecast.service

Add following content

[Unit]
Description=Icecast Network Audio Streaming Server
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/icecast -c /etc/icecast/icecast.xml
ExecReload=/bin/kill -HUP $MAINPID
User=icecast
Group=icecast
WorkingDirectory=/home/icecast/

[Install]
WantedBy=multi-user.target

Enable icecast to start on boot with

systemctl enable icecast

To start/stop/restart icecast, use

systemctl start icecast
systemctl stop icecast
systemctl restart icecast

October 4, 2020

configure: error: must have Ogg Vorbis v1.0 or above installed
when installing icecast from the source on the CentOS 7 server, I get error
```
checking for libogg... not found
checking for libvorbis... configure: error: must have Ogg Vorbis v1.0 or above installed
```
To fix the error, install libvorbis-devel
```
yum install -y libvorbis-devel
```
See Errors
October 4, 2020

How to install icecast KH on CentOS 7 Server

Download latest source code for IceCast KH server from

https://github.com/karlheyes/icecast-kh/releases

At the time of writing this post, latest version is 2.4.0-kh15

cd /usr/local/src
wget https://github.com/karlheyes/icecast-kh/archive/icecast-2.4.0-kh15.tar.gz
tar -zxf icecast-2.4.0-kh15.tar.gz
cd icecast-kh-icecast-2.4.0-kh15
./configure
make CFLAGS="-D_XOPEN_SOURCE=600"
make install

If you get error related to “XSLT configuration could not be found”, see configure: error: XSLT configuration could not be found

You need a non root user to run icecast, create a user

useradd -m -s /bin/bash icecast

Copy the sample conif file

mkdir /etc/icecast
cp /usr/local/src/icecast-kh-icecast-2.4.0-kh13/examples/icecast_minimal.xml /etc/icecast/
chown -R icecast:icecast /etc/icecast/
cp -R /usr/local/src/icecast-kh-icecast-2.4.0-kh13/admin/ /home/icecast/admin/
cp -R /usr/local/src/icecast-kh-icecast-2.4.0-kh13/web/ /home/icecast/web/
chown -R icecast:icecast /home/icecast/admin/
chown -R icecast:icecast /home/icecast/web/

Switch to user icecast

su - icecast

Create folders for logs

mkdir /home/icecast/logs

To start icecast, run

icecast -c /etc/icecast/icecast.xml

Edit icecast.xml, set the password and ports as required.

To autostart icecast on server boot, check Autostart icecast using systemd.

See icecast

October 4, 2020

Autostart
Enable rc.local
Start a program after reboot using cronjob
Auto Start Nginx on Windows
VMware ESXi set Virtual Machine to start on Boot
Start meguca on boot
Autostart icecast using systemd
Auto restart lighttpd on crash
Supervisord

On Linux, auto start configurations are stored in
```
~/.config/autostart/ 
```
October 3, 2020

Install PHP 5.6 on CentOS 7

To install PHP 5.6 on CentOS 7, enable EPEL repo and remi repo

yum install epel-release -y
rpm -ivh https://rpms.remirepo.net/enterprise/remi-release-7.rpm

Install yum-utils and enable remi-php56 repo

yum install yum-utils
yum-config-manager --enable remi-php56

Install PHP 5.6 with

yum install -y php php-bcmath php-cli php-common php-devel php-gd \
    php-imap php-intl php-json php-ldap php-lz4 php-mbstring php-mysqlnd \
    php-soap php-intl php-opcache php-xml php-pdo

October 3, 2020

configure: error: XSLT configuration could not be found
When installing a software from source i get error
```
configure: error: XSLT configuration could not be found
```
To fix the error install run

CentOS/RHEL
```
yum install -y libxslt-devel
```
See Errors
October 3, 2020
How to increase /tmp partition size
On a Linux server /tmp partition was only 1 GB, it get full at times.

Server had following in its /etc/fstab file
```
[root@imeicheck-2020 ~]# cat /etc/fstab 
UUID=c0f46bb1-c0bc-4199-95d6-551d03c12a0a /                       xfs     defaults        1 1
/var/.tempdisk /tmp ext4 loop,rw,noexec,nosuid,nodev,nofail 0 0
/tmp /var/tmp none bind 0 0
[root@imeicheck-2020 ~]#
```
Currenly file /var/.tempdisk is mounted as /tmp.

So i created a new file with 4 GB size
```
dd if=/dev/zero of=/var/sok_tmp bs=1M count=4096
```
Format it as ext4 file system
```
mkfs -t ext4 /var/sok_tmp
```
Before i swith /tmp to newly created disk, i need to copy content of current /tmp to it. For this i mount the new disk as /tmp2
```
mkdir /tmp2
mount -o loop /var/sok_tmp /tmp2
rsync -avzP /tmp/ /tmp2/
```
Now you have all files of /tmp in /tmp2, edit /etc/fstab
```
vi /etc/fstab
```
Find entry for current /tmp partition
```
/var/.tempdisk /tmp ext4 loop,rw,noexec,nosuid,nodev,nofail 0 0
```
Replace it with new file you created
```
/var/sok_tmp /tmp ext4 loop,rw,noexec,nosuid,nodev,nofail 0 0
```
Reboot the server. You will have 4 GB /tmp partition now.
September 28, 2020

apt The method driver /usr/lib/apt/methods/https could not be found

When running apt update on a Debian server, i get error

root@shop:~# apt-get update
E: The method driver /usr/lib/apt/methods/https could not be found.
N: Is the package apt-transport-https installed?
root@shop:~#

apt https error

To fix the error, run

apt-get install apt-transport-https ca-certificates

See apt

September 25, 2020

uname

List Kernel Full details

boby@hon-pc-01:~ $ uname -a
Linux hon-pc-01 4.4.0-53-generic #74-Ubuntu SMP Fri Dec 2 15:59:10 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
boby@hon-pc-01:~ $

List Architecture

boby@hon-pc-01:~ $ uname -m
x86_64
boby@hon-pc-01:~ $

Show Kernel Version

boby@hon-pc-01:~ $ uname -r
4.4.0-53-generic
boby@hon-pc-01:~ $

See Linux Commands

September 25, 2020

Lock User Account in Linux
To lock a Linux User account, run
```
usermod -L USER_NAME_HERE
```
You can verify the account is locked with command
```
passwd --status USER_NAME_HERE
```
Example

See usermod
September 24, 2020
VestaCP disable Backups
In VestaCP, each packages have option to specify how many backups it can take. First you need to click on packages, then change number of backups allowed for each package.

If backups allowed is more than 0, set it to 0.

Users are created with these Packages. For all existing users, you need to manually edit file
```
/usr/local/vesta/data/users/USERNAME_HERE/user.conf
```
change value for backup to 0.

If you have many users, instead o editing one by one, you can use following bash script.
```
#!/bin/bash

FILES=$(find /usr/local/vesta/data/users/ -name "user.conf")

for USER_FILE in $FILES
do
    echo "Processing ${USER_FILE}"
    sed -i "s/^BACKUPS=.*$/BACKUPS='0'/g" $USER_FILE
    sed -i "s/^U_BACKUPS=.*$/U_BACKUPS='0'/g" $USER_FILE
done
```
See VestaCP
September 22, 2020

wget force IPv4/6 download

If your server support both IPv4 and IPv6 and you need to force download a file using IPv4, you can use

wget -4 URL_HERE

To force IPv6 connection, use

wget -6 URL_HERE

Example

[root@li2136-233 ~]# wget -4 https://rpms.remirepo.net/enterprise/remi-release-7.rpm
--2020-09-22 04:45:30--  https://rpms.remirepo.net/enterprise/remi-release-7.rpm
Resolving rpms.remirepo.net (rpms.remirepo.net)... 195.154.241.117
Connecting to rpms.remirepo.net (rpms.remirepo.net)|195.154.241.117|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 20732 (20K) [application/x-rpm]
Saving to: ‘remi-release-7.rpm’

100%[==================================================================================================================================================================>] 20,732      74.2KB/s   in 0.3s   

2020-09-22 04:45:32 (74.2 KB/s) - ‘remi-release-7.rpm’ saved [20732/20732]

[root@li2136-233 ~]#

from wget help, here are the options

wget IPv4 connection

See wget

September 22, 2020