Difference between revisions of "Set-up for Oracle Linux 8"

Revision as of 16:14, 23 November 2021

Perform Installation of minimal Oracle Linux 8 (https://yum.oracle.com/ISOS/OracleLinux/OL8/u4/x86_64/x86_64-boot.iso)

Once installed, update all components and restart server.

yum -y update
shutdown -r now

You can run the below commands directly or using this command to execute via a bash script

bash <(curl -s https://update.viavisolutions.com/v18/ObserverGigaFlow_Install_Oracle8.4.sh)

Install optional software components

yum -y install glibc.i686
yum -y install man
yum -y install wget
yum -y install openssh-clients
yum -y install perl
yum -y install chkconfig
yum -y install perl-CPAN
yum -y install perl-DBD-Pg
yum -y install tcpdump
yum -y install net-snmp-utils net-snmp
yum -y install net-tools
yum -y install dstat
yum -y install iotop
yum -y install sysstat
yum -y install iptraf
yum -y install rsync

Please ensure that DNS is also configured for your network.

Enable network access by running the firewalld commands from Firewall_Management_in_Linux

Make folder to hold GigaFlow and related software.

mkdir /opt
mkdir /opt/software
cd /opt/software

Download Java and link to standard location

wget http://builds.anuview.net/beta/jre-8u202-linux-x64.rpm
rpm -i jre-8u202-linux-x64.rpm
ln -s /usr/java/jre1.8.0_202-amd64/ /opt/java

Check that java has installed

/opt/java/bin/java -version

Should output

java version "1.8.0_202"

Java(TM) SE Runtime Environment (build 1.8.0_202-b08)

Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)

Install postgres

//Current
//Add Postgres Yum Repository
rpm -Uvh https://download.postgresql.org/pub/repos/yum/reporpms/EL-8-x86_64/pgdg-redhat-repo-latest.noarch.rpm
//Disable Appstream
dnf -qy module disable postgresql 
yum install postgresql11-server postgresql11 -y

/usr/pgsql-11/bin/postgresql-11-setup initdb
systemctl start postgresql-11.service
systemctl enable postgresql-11.service
mv /var/lib/pgsql/11/data/pg_hba.conf /var/lib/pgsql/11/data/pg_hba.conf.orig
wget -O /var/lib/pgsql/11/data/pg_hba.conf http://95.85.35.209/software/build/pg_hba.conf
systemctl stop postgresql-11.service
systemctl start postgresql-11.service

If asked, Leave port as 5432, enter password as P0stgr3s_2ME, set started at boot = y

Download GigaFlow Software

wget -p http://95.85.35.209/software/ros_unix.tgz 
tar -vxzf /opt/software/95.85.35.209/software/ros_unix.tgz -C /

If this is a new installation, copy the service files

cp /opt/ros/resources/unix/rosd /etc/init.d/
cp /opt/ros/resources/unix/start /opt/ros/resources/
chmod 755 /etc/init.d/rosd
chmod 755 /opt/ros/resources/start
chmod 755 /opt/ros/resources/docs/sql/createmyipfixdb.sh
chkconfig --add rosd
chkconfig --level 345 rosd on

Initialise the anuview database

su - postgres < /opt/ros/resources/docs/sql/createmyipfixdb.sh

//Installation now complete!!

Start the service anuview service (rosd)

/etc/init.d/rosd restart

You should now be able to access the application on http://IP_ADDRESS:7902

The default user is "admin" and the default password is "admin"

Linux Startup Settings

This is the login page for GigaFlow, the default login credentials are Username:admin and Password:admin On this page you can also see details about the current version of Gigaflow which you are accessing.

When you log in for the first time, you will be prompted for some information. Server name is the name that you want to know this server as. It doesn't have to be the servers hostname. This name will appear in the web browser title bar. Minimum Free Space tells GigaFlow what the minimum free space that it should try to maintain on the disk (before purging old data). This should typically be 10% of your total disk space.

Additional Information

Scheduler

echo "cfq" > /sys/block/sda/queue/scheduler

alter/add /etc/sysctl.d/swappiness.conf and set vm.swappiness = 10

If you want to move an existing data folder to a new location (i.e. to a larger partition) you can use

e.g. move existing data folder to new location (/home/postgresdata) and link back to original /opt/postgresql/pg95/data

We have to be careful here if SELinux is enbaled to allow the new location via the semanage and restorecon commands shown below.

/etc/init.d/postgresql-95 stop
cp -rp /var/lib/pgsql/10//data /home/postgresdata/
mv /var/lib/pgsql/10//data /opt/postgresql/pg95/data_orig
ln -s /home/postgresdata/data/ /var/lib/pgsql/10/data
semanage fcontext -a -t postgresql_db_t '/home/postgresdata(.*/)?'
restorecon -R /home/postgresdata
/etc/init.d/postgresql-95 start

Once the move is complete and everything is confirmed working, you can remove the copy of the data folder (i.e. /opt/postgresql/pg95/data_orig) to reclaim that disk space.

Appliance

Goto boot page F11 at startup

Select the USB drive with the Oracle Linux 8 Boot ISO

In Oracle Linux, Select English->English (United States)

Click on "Network & Host Name"

Select The first Ethernet Adapter and make sure its set to "On"

You may see it's connected and the DHCP IP Address.

Click on "Configure"

Make sure that the "Connect automatically with priority" is ticked in the "General" tab

Use the "IPv4 Settings " tab to change the IP address (Set method to manual and then press the add button)

Make sure you have entered a valid DNS server

Click on done when ready

Click on "Installation Sources"

Select "On the network"

Enter

https://yum.oracle.com/repo/OracleLinux/OL8/baseos/latest/x86_64 as the main installation source.

Add in to 2 repos

Name: ol8_AppStream
URL: https://yum.oracle.com/repo/OracleLinux/OL8/appstream/x86_64/
Type:  Repository URL

Name: ol8_UEKR6
URL: https://yum.oracle.com/repo/OracleLinux/OL8/UEKR6/x86_64/
Type:  Repository URL

Press Done when ready

You should see "Downloading...." messages under both the "Installation Source" and "Solftware Selection".

When they have finished downloading, you should see a "Please Confirm Software Selection", click on "Software Selection"

If you get an error under "installation Source" or "Software Selection" Go Back into "Installation Source" and double check the URLs entered Under "Software selection" Select "Server with GUI" On the right side list select System Tools

Press Done

Set root user and password

Set timezone

Click on the "Installation Destination" option

Click on the Raid Drive with 895GiB of space, it should now have a tick on it.

Select "Custom" for Storage Configuration and click on "Done"

If it says you do not have enough space, click on the "Reclaim Space" option Click on the "Delete All" option to remove existing partitions and click on the "Reclaim Space" button

If there is an "Unknown" section, expand it

Select each of the entries under "Unknown" and click on the "-" button

If prompted for "Are you sure you want to delete....." click on the tick box and click "Delete It"

If you are prompted to "Delete all file systems which are only used by Unknown"

Select the tick box and press "Delete It"

No Click on the "Click here to create them atuomatically" Option

On the list presented, delete the /home partition

Click on the + button to add a new partition, Mount on /opt and assign 400GB, click on "Add mount point"

Click on the + button again and a new partition, Mount on /home and assign 100%, click on "Add mount point"

Press the done button

Click on "Accept Changes"

If there are no errors, click on "Begin Installation"

When installation is complete, click on "Reboot System"

After Rebooting you should see the "Welcome" screen.

Click Next

Set location services to "Off" and cick next

Skip the "Connect your online accounts" page

Enter "viavi" For the full name on the "About You" page and click next

Enter your password (admin by default) and click next

Click on the "Start Using Oracle Linux Server" button

Click on the "Activities"menu option in the top left of the screen and select "Terminal"

When the terminal opens, enter "sudo bash" and press enter

Enter the following commands

systemctl enable --now cockpit.socket
systemctl start cockpit

Goto "Activities" and "Firefox"

Enter the following url

http://127.0.0.1:9090

Login as root

In the "Usage" card, click on the "View details and history" link

Scroll down to the bottom of the page and click on the "Install cockpit-pcp" button

Click "install"

When done, click on the "Log out" button and then "Reconnect" as root

On the top right of the page click on "Metrics Settings"

In the popup, enable the "Collect Metrics" option and press save

Close firefox

In the terminal windows, run

mkdir /opt/software
cd /opt/software

Install raid management tool

curl -o StorCLI.zip https://update.viavisolutions.com/v18/StorCLI.zip
unzip StorCLI.zip
cd /opt/software/Unified_storcli_all_os/Linux
rpm -ivh storcli-007.1907.0000.0000-1.noarch.rpm

Installs to /opt/MegaRAID/storcli

cd /opt/software
curl -o arecaRAIDv1.9.zip https://update.viavisolutions.com/v18/arecaRAIDv1.9.zip
unzip arecaRAIDv1.9.zip
cd V1.9.0_120503
cd x86_64
chmod 755 ./cli64

Hardening

systemctl stop rpcbind.service
systemctl disable rpcbind.service

Install system tools

yum -y install glibc.i686
yum -y install man
yum -y install wget
yum -y install openssh-clients
yum -y install perl
yum -y install chkconfig
yum -y install perl-CPAN
yum -y install perl-DBD-Pg
yum -y install tcpdump
yum -y install net-snmp-utils net-snmp
yum -y install net-tools
yum -y install dstat
yum -y install iotop
yum -y install sysstat
yum -y install iptraf
yum -y install rsync

Install all updates

yum -y update

Reboot end ensure system starts by itself

shutdown -r now