Monday, September 25, 2017

HelenOS

HelenOS




HelenOS is a portable microkernel-based multiserver operating system designed and implemented from scratch. It decomposes key operating system functionality such as file systems, networking, device drivers and graphical user interface into a collection of fine-grained user space components that interact with each other via message passing. A failure or crash of one component does not directly harm others. HelenOS is therefore flexible, modular, extensible, fault tolerant and easy to understand.

Website:

We use newest available version to run:









Monday, September 11, 2017

Install Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux enabled


Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux enabled.


We will install Zabbix 3.4.1 on Oracle Linux 7.4 64-bit.

OS: Oracle Linux 7.4 64-bit

We install OS using VMware Workstation 12 Player.
We use 20 GB partition with option automatic LVM.

After install   make network interface start on boot

grep ONBOOT /etc/sysconfig/network-scripts/ifcfg-ens33 
 
ONBOOT=yes

-          set hostname:

hostnamectl set-hostname zabbix01
  
-           do system update:

yum clean all; rm –fr /var/cache/yum; yum update –y
 
 
Optional allow rule for ssh with firwall-cmd and install necessary packages:
 
firewall-cmd --permanent --add-port=22/tcp
 
yum install vim mc wget tcpdump -y

Finally after reboot we have newest possible kernel installed:

uname –a
 
Linux zabbix01 4.1.12-103.3.8.el7uek.x86_64 #2 SMP Mon Aug 21 17:27:54 PDT 2017
 x86_64 x86_64 x86_64 GNU/Linux

Next install your favorite X-System – for example:

yum groupinstall "X Window System"
yum install gnome-classic-session gnome-terminal nautilus-open-terminal control-center liberation-mono-fonts firefox
ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target
reboot

MySQL

cd /opt/

wget https://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm --no-check-certificate

rpm -i mysql57-community-release-el7-8.noarch.rpm

yum install mysql-server -y

Check mysql version:

rpm -qa| grep mysql-community-server
 
mysql-community-server-5.7.19-1.el7.x86_64
 
 
Enable and start mysql:
  
systemctl enable mysqld;systemctl start mysqld;systemctl status mysqld
  
Next hardening mysql - get temporary pass:
 
grep 'temporary password' /var/log/mysqld.log
 
 
[root@zabbix01 pegaz]# mysql_secure_installation 
 
Securing the MySQL server deployment.
 
Enter password for user root: 
 
The existing password for the user account root has expired. Please set a new password.
 
New password: 
 
Re-enter new password: 
The 'validate_password' plugin is installed on the server.
The subsequent steps will run with the existing configuration
of the plugin.
Using existing password for root.
 
Estimated strength of the password: 100 
Change the password for root ? ((Press y|Y for Yes, any other key for No) : No
 
 ... skipping.
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
 
Remove anonymous users? (Press y|Y for Yes, any other key for No) : Y
Success.
 
 
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
 
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Y
Success.
 
By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.
 
 
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : Y
 - Dropping test database...
Success.
 
 - Removing privileges on test database...
Success.
 
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
 
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y
Success.
 
All done! 
 
 
Tune mysql settings – all settings are examples so modify to Yours needs:
 
vim /etc/my.cnf.d/server.conf
 
[mysqld]
innodb_file_per_table
innodb_flush_method=O_DIRECT
innodb_log_file_size=1G
innodb_buffer_pool_size=4G
innodb_data_file_path=ibdata1:10M:autoextend
 
 
Notice that innodb_log_file_size is 25% of innodb_buffer_pool_size !
 
 
rm -rf /var/lib/mysql/ib*
 
 
systemctl restart mysqld; systemctl status mysqld
 
 
mysql -p
 
create database zabbixdb character set utf8 collate utf8_bin;
 
grant all privileges on zabbixdb.* to zabbix@localhost identified by '<password>';
 
quit;
 
 
HTTPD

yum install httpd -y

systemctl enable httpd; systemctl restart httpd; systemctl status httpd
 
We see error like that:
 
httpd: Could not reliably determine the server's fully qualified domain name
 
So we can fix it adding hostname as ServerName:
 
grep ServerName /etc/httpd/conf/httpd.conf | grep -v "#"
ServerName zabbix01
 
And then
 
systemctl restart httpd

PHP

Enable Optional repo modifying file

vim /etc/yum.repos.d/public-yum-ol7.repo
 
[ol7_optional_latest]
name=Oracle Linux $releasever Optional Latest ($basearch)
baseurl=http://yum.oracle.com/repo/OracleLinux/OL7/optional/latest/$basearch/
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
gpgcheck=1
enabled=1

We get:

yum repolist | grep Optional

ol7_optional_latest/x86_64 Oracle Linux 7Server Optional Latest (x86_64)  16,334

Zabbix 3.4

rpm --import http://repo.zabbix.com/RPM-GPG-KEY-ZABBIX

rpm -i http://repo.zabbix.com/zabbix/3.4/rhel/7/x86_64/zabbix-release-3.4-2.el7.noarch.rpm

yum install zabbix-server-mysql zabbix-web-mysql zabbix-agent zabbix-java-gateway –y
 
  
 Modify file /etc/php.ini adding Your timezone:
grep date.timezone /etc/php.ini|grep -v ";"
 
date.timezone = Europe/Warsaw
 
 
I won’t write about other settings because you can modify them according to your needs.
 
 
Make iptables rules:
 
firewall-cmd --permanent --add-port=10050/tcp
firewall-cmd --permanent --add-port=10051/tcp
firewall-cmd --reload 
systemctl restart firewalld
 
zcat /usr/share/doc/zabbix-server-mysql-3.4.1/create.sql.gz | mysql -uzabbix -p zabbixdb
 
Update your timezone:
 
grep timezone /etc/httpd/conf.d/zabbix.conf
        php_value date.timezone Europe/Warsaw
 
  
systemctl enable zabbix-server; systemctl enable zabbix-agent
 
We use Selinux so must add rule like this:
 
setsebool -P httpd_can_connect_zabbix=1
  
Set mysql parameters:
 
grep DB /etc/zabbix/zabbix_server.conf | grep -v "#"
DBHost=localhost
DBName=zabbixdb
DBUser=zabbix
DBPassword='Password’
 
  
Start server and agent:
 
systemctl start zabbix-server; systemctl start zabbix-agent
 
 
We get error lioke this in /var/log/zabbix/zabbix_server.log
 
Cannot bind socket to "/var/run/zabbix/zabbix_server_alerter.sock"
 
  
So once again Selinux J
 
 yum install policycoreutils-python -y
 
There is workaround because it is known issue:  Zabbix3Selinux
 
 
wget -O zabbix_server_add.te https://support.zabbix.com/secure/attachment/53320/53320_zabbix_server_add.te --no-check-certificate
 
checkmodule -M -m -o zabbix_server_add.mod zabbix_server_add.te
  
semodule_package -o zabbix_server_add.pp -m zabbix_server_add.mod
  
semodule -i zabbix_server_add.pp
  
systemctl restart zabbix-server; systemctl restart zabbix-agent
 

where ipadress is your IP



Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux
Dodaj napis

Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux

Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux

Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux

Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux

Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux
 Admin / zabbix
Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux
 We get clean dashboard:
Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux
 We can enable zabbix server:
Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux
 Now we can see first server J
Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux

Zabbix 3.4.1 on Oracle Linux 7.4 64-bit with Selinux


   That is all and we have  installed Zabbix 3.4.1 on Oracle Linux 7.4 64-bit.

Enjoy J


Monday, September 4, 2017

Visopsys

Visopsys
 is an alternative operating system for PC compatible computers.
 In development since 1997, this system is small, fast, and open source.
 It features a simple but functional graphical interface, pre-emptive multitasking,
 and virtual memory. 









Tuesday, August 29, 2017

SkyOS


SkyOS (Sky Operating System) is a discontinued prototype commercial, proprietary,
 graphical desktop operating system written for the x86 computer architecture
We download SkyOS from http://www.skyos.org.
Then we make virtual machine using iso downloaded with 2GB RAM.








As a former open source project, SkyOS has been the subject of many debates involving free software.



Tuesday, August 22, 2017

Haiku


HAIKU

is an open source operating system currently in development. Specifically targeting personal computing, Haiku is a fast, efficient, simple to use, easy to learn, and yet very powerful system for computer users of all levels. Additionally, Haiku offers something over other open source platforms which is quite unique: The project consists of a single team writing everything from the kernel, drivers, userland services, tool kit, and graphics stack to the included desktop applications and preflets.



We use haiku-nightly-anyboot iso to prepare Virtual Machine.



After install reboot machine.







If You want to install some packages or update system just use pkgman :)

Monday, August 21, 2017

Redox


Redox is a Unix-like microkernel operating system written in the programming language Rust,
a language with focus on safety and high performance.

Redox is inspired by previous kernels and operating systems, such as Minix or BSD.

The Redox OS Kernel is a hybrid kernel that supports X86_64 systems and provides
Unix-like syscalls for primarily Rust applications.

The website can be found at https://www.redox-os.org.

After download iso file we can start Virtual Machine with Redox:





root / password





Have a fun ☺


Tuesday, December 20, 2016

REACTOS



ReactOS

             is an operating system designed to be compatible with Microsoft Windows software.

We use iso file from http://downloads.sourceforge.net/reactos/ReactOS-0.4.3-iso.zip

After download we create virtual machine and start to install:















Now we can use ReactOS J


HelenOS

HelenOS HelenOS is a portable microkernel-based multiserver operating system designed and implemented from scratch. It decomposes k...