Vultr default settings

You need some configuration after the creation of the Vultr server. First, update the packages and install some essential software:

# yum update
...
# yum install wget mc java-1.7.0-openjdk-devel.x86_64 java-1.7.0-openjdk.x86_64 rsync unzip screen man net-tools bzip2
...

Set up the CentOS community repository (optionally on Vultr):

# wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
...
# rpm -Uvh epel-release-7-5.noarch.rpm
...

Install the munin-node package:

# yum install munin-node
...

Configure the name of the server and enable the connection from the munin-server (currently munin.gacivs.info):

/etc/munin/munin-node.conf

allow 108.61.170.194
allow munin.gacivs.info

Add plugins to the munin:

# cd /etc/munin/plugins/
# ln -s /usr/share/munin/plugins/selinux_avcstat
# ln -s /usr/share/munin/plugins/iostat_ios
# ln -s /usr/share/munin/plugins/iostat
# ln -s /usr/share/munin/plugins/http_loadtime
# ln -s /usr/share/munin/plugins/fw_forwarded_local
# ln -s /usr/share/munin/plugins/fw_conntrack
# ln -s /usr/share/munin/plugins/apache_volume
# ln -s /usr/share/munin/plugins/apache_processes 
# ln -s /usr/share/munin/plugins/apache_accesses

Set up the run levels and start the service:

# chkconfig --levels 235 munin-node on
...
# service munin-node start

Add the new node to the munin-server configuration:

/etc/munin/munin.conf

[portal.gacivs.info]
    address 104.238.133.202
    use_node_name yes

Set up the mail service and add a relay host (currently smtp-relay.gmail.com):

/etc/postfix/main.cf

mydomain = gacivs.info
smtp_helo_name = gacivs.info
relayhost = [smtp-relay.gmail.com]:587

Restart the mail service:

# service postfix restart
...

...and add the IPv6 address of the host to the IP white list of the Google's SMTP relay service.

Set up the hostname of the server:

# hostnamectl set-hostname portal.gacivs.info

Create a swap file, switch on and check it:

# dd if=/dev/zero of=/root/swapfile bs=1024 count=1048576
...
# chmod 600 /root/swapfile
# mkswap /root/swapfile
...
# swapon /root/swapfile
...
# free
             total       used       free     shared    buffers     cached
Mem:        502272     491988      10284          0       6468     421780
-/+ buffers/cache:      63740     438532
Swap:      1048568          0    1048568

Add it to the fstab:

/etc/fstab

/root/swapfile          swap                    swap    defaults        0 0

Set up the time zone:

# mv /etc/localtime /etc/localtime.orig
# ln -s /usr/share/zoneinfo/Europe/Budapest /etc/localtime

PostgreSQL

Install the PostgreSQL:

# yum install postgresql-server.x86_64 postgresql.x86_64
...
# service postgresql initdb

Set up the password based authentication from the local address (127.0.0.1/32) and the private network (10.0.0.0/8):

data/pg_hba.conf

local   all         all                               ident
# IPv4 local connections:
host    all         all         127.0.0.1/32          password
host    all         all         127.0.0.1/32          ident
host    all         all         10.0.0.0/8            password
# IPv6 local connections:
host    all         all         ::1/128               password
host    all         all         ::1/128               ident

Configure the listen addresses (optional):

data/postgresql.conf

listen_addresses = '*'          # what IP address(es) to listen on;

Set up the run levels of the PostgreSQL:

# chkconfig --levels 235 postgresql on

Check the connection:

# su - postgres
$ psql
psql (9.2.7)
Type "help" for help.
postgres=#

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Vultr default settings

PostgreSQL