Manager
From DHVLab
Contents
Network Configuration
NFS Server
#install required packages
yum install nfs-utils libnfsidmap
#create exports
cat << EOT >> /etc/exports
/exports/homes DMZ_NETWORK/DMZ_SUBNETMASK (rw,sync,no_root_squash,no_all_squash,fsid=1)
NODE_NETWORK/NODE_SUBNETMASK(rw,sync,no_root_squash,no_all_squash,fsid=1)
EOT
#start and enable NFS server
systemctl enable rpcbind
systemctl enable nfs-server
systemctl start rpcbind
systemctl start nfs-server
systemctl start rpc-statd
systemctl start nfs-idmapd
DHCP Daemon
#install required packages
yum install dhcp
Edit configuration file
/etc/dhcp/dhcpd.conf
authoritative;
#DMZ network definition
subnet DMZ_NETWORK netmask DMZ_SUBNETMASK {
interface NIC2;
range DMZ_NETWORK_START_IP DMZ_NETWORK_END_IP;
default-lease-time 600;
max-lease-time 7200;
option domain-name "DMZ.YOUR_DOMAIN";
option domain-name-servers MANAGER_DMZ_IP;
option broadcast-address DMZ_NETWORK_BROADCAST;
option subnet-mask DMZ_SUBNETMASK;
option routers MANAGER_DMZ_IP;
}
#Nodes network definition
subnet NODES_NETWORK netmask NODES_SUBNETMASK {
interface NIC1;
range NODE_NETWORK_START_IP NODE_NETWORK_START_IP;
default-lease-time 600;
max-lease-time 7200;
option domain-name "NODE.YOUR_DOMAIN";
option domain-name-servers MANAGER_NODE_IP;
option broadcast-address NODE_NETWORK_BROADCAST;
option subnet-mask NODES_SUBNETMASK;
option routers MANAGER_NODES_IP;
}
#...
#define fixed addresses
host HOST_0_NAME {
hardware ethernet XX:XX:XX:XX:XX:XX;
fixed-address HOST_0_IP;
option host-name "HOST_0_NAME";
}
host HOST_1_NAME {
hardware ethernet XX:XX:XX:XX:XX:XX;
fixed-address HOST_1_IP;
option host-name "HOST_1_NAME";
}
#....
systemctl start dhcpd.service
systemctl enable dhcpd.service
BIND Daemon
#install required packages
yum install bind bind-utils
/etc/named.conf
options {
listen-on port 53 { 127.0.0.1; DMZ_MANAGER_IP; NODES_MANAGER_IP;};
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
allow-query { 127.0.0.1; DMZ_NETWORK/24; NODES_NETWORK/24;};
allow-transfer { trusted; };
recursion yes;
forwarders {
LOCAL_DNS_SERVER_IP;
PROVIDER_DNS_SERVER_IP;
OTHER_DNS_SERVERS;
};
forward only ;
dnssec-enable yes;
dnssec-validation yes;
bindkeys-file "/etc/named.iscdlv.key";
managed-keys-directory "/var/named/dynamic";
pid-file "/run/named/named.pid";
session-keyfile "/run/named/session.key";
};
acl "trusted" {
localhost;
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
zone "." IN {
type hint;
file "named.ca";
};
include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";
include "/etc/named/named.conf.local";
/etc/named/named.conf.local
zone "DMZ.YOUR_DOMAIN" IN {
type master;
file "/etc/named/zones/dmz.YOUR_DOMAIN.zone";
};
zone "XXX.XXX.XXX.in-addr.arpa" IN {
type master;
file "/etc/named/zones/XXX.XXX.XXX.zone";
};
zone "nodes.YOUR_DOMAIN" IN {
type master;
file "/etc/named/zones/nodes.YOUR_DOMAIN.zone";
};
zone "XXX.XXX.XXX.in-addr.arpa" IN {
type master;
file "/etc/named/zones/XXX.XXX.XXX.zone";
};
Create zone files
/etc/named/zones/dmz.YOUR_DOMAIN.zone
$TTL 1D
dmz.YOUR_DOMAIN. IN SOA MANAGER.dmz.YOUR_DOMAIN. YOUR_EMAIL.YOUR_DOMAIN. (
200612060 ; serial
2H ; refresh slaves
5M ; retry
1W ; expire
1M ; Negative TTL
)
@ IN NS MANAGER.dmz.YOUR_DOMAIN.
MANAGER.YOUR_DOMAIN. IN A MANAGER_IP ; Firewall/Gateway
WEB.dmz.YOUR_DOMAIN. IN A WEBSERVER_IP ; Webserver
.../etc/named/zones/XXX.XXX.XXX.zone
$TTL 1D
@ IN SOA MANAGER.dmz.YOUR_DOMAIN. YOUR_EMAIL.YOUR_DOMAIN. (
200612060 ; serial
2H ; refresh slaves
5M ; retry
1W ; expire
1M ; Negative TTL
)
IN NS MANAGER.dmz.YOUR_DOMAIN.
XXX IN PTR MANAGER.dmz.YOUR_DOMAIN.
XXX IN PTR WEB.dmz.YOUR_DOMAIN.
#fix permissions
chgrp named -R /var/named
chown -v root:named /etc/named.conf
#enable service
systemctl enable named
systemctl start named
#use own nameserver
echo "nameserver localhost" >> /etc/resolv.conf
For further information read BIND Documentation
LDAP Server
#install required packages
yum install openldap-servers libtool-ltdl openldap-clients openldap gnutls-bin ssl-cert
#create directory for LDIF files
mkdir /etc/openldap/ldif
chown ldap:ldap /etc/openldap/ldif
nano -w /etc/openldap/ldap.conf
BASE dc=YOUR_DOMAIN,dc=YOUR_TLD
URI ldap://MANAGER
TLS_CACERTDIR /etc/openldap/certs
TLS_REQCERT allow
SASL_NOCANON on
Setup the database
cp -a /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
chown ldap:ldap /var/lib/ldap/DB_CONFIG
#start SLAPD
systemctl start slapd.service
systemctl enable slapd.service
Configuration
#generate master password
/usr/sbin/slappasswd -h {SSHA}
Now generate the corresponding LDIF
/etc/openldap/ldif/cn=config_olcRootPW.ldif
dn: olcDatabase={0}config,cn=config
changetype: modify
replace: olcRootPW
olcRootPW: {SSHA}XXXXXXXXXXXXXXXXXXXXXXX
Now apply the LDIF by executing
ldapmodify -Y EXTERNAL -H ldapi:/// -f /etc/openldap/ldif/cn\=config_olcRootPW.ldif
/etc/openldap/ldif/01-cn=config_BaseDN.ldif
#create base DN
dn: olcDatabase={1}monitor,cn=config
changetype: modify
replace: olcAccess
olcAccess: {0}to * by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" read by dn.base="cn=Manager,dc=YOUR_DOMAIN,dc=YOUR_TLD" read by * none
dn: olcDatabase={2}hdb,cn=config
changetype: modify
replace: olcSuffix
olcSuffix: dc=YOUR_DOMAIN,dc=YOUR_TLD
dn: olcDatabase={2}hdb,cn=config
changetype: modify
replace: olcRootDN
olcRootDN: cn=Manager,dc=YOUR_DOMAIN,dc=YOUR_TLD
/etc/openldap/ldif/02-cn=config_ManagerPW.ldif
dn: olcDatabase={2}hdb,cn=config
changetype: modify
add: olcRootPW
olcRootPW: {SSHA}XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
/etc/openldap/ldif/03-cn=config_GLOBAL_olcIdleTimeout.ldif
#modify IdleTimeout
dn: cn=config
changetype: modify
add: olcIdleTimeout
olcIdleTimeout: 15
See StartTLS how to generate the certificates.
/etc/openldap/ldif/04-cn=config_TLS_olcTLSProtocolMin.ldif
#set minimal TLS version to 3.1
dn: cn=config
changetype: modify
add: olcTLSProtocolMin
olcTLSProtocolMin: 3.1
/etc/openldap/ldif/05-cn=config_TLS.ldif
#add TLS support and certificates
dn: cn=config
changetype: modify
replace: olcTLSCipherSuite
olcTLSCipherSuite: HIGH
-
replace: olcTLSCertificateFile
olcTLSCertificateFile: /etc/pki/openldap/certs/cert.pem
-
replace: olcTLSCertificateKeyFile
olcTLSCertificateKeyFile: /etc/pki/openldap/private/key.pem
-
replace: olcTLSCACertificateFile
olcTLSCACertificateFile: /etc/pki/openldap/certs/CAcert.pem
/etc/openldap/ldif/06-cn=config_DIT.ldif
#create structure
dn: dc=YOUR_DOMAIN,dc=YOUR_TLD
dc: YOUR_DOMAIN
ou: YOUR_DOMAIN dot YOUR_TLD
objectClass: top
objectClass: dcObject
objectClass: organizationalUnit
# People
dn: ou=People,dc=YOUR_DOMAIN,dc=YOUR_TLD
ou: People
objectClass: top
objectClass: organizationalUnit
# Group
dn: ou=Group,dc=YOUR_DOMAIN,dc=YOUR_TLD
ou: Group
objectClass: top
objectClass: organizationalUnit
/etc/openldap/ldif/07-cn=config_DisableAnonymousBind.ldif
#disallow anonymous users to query LDAP
dn: cn=config
changetype: modify
add: olcDisallows
olcDisallows: bind_anon
-
add: olcRequires
olcRequires: authc
/etc/openldap/ldif/08-cn=config_CreateDbIndex.ldif
#create and define indexes for LDAP
#http://www.zytrax.com/books/ldap/apa/indeces.html
dn: olcDatabase={2}hdb,cn=config
changetype: modify
add: olcDbIndex
olcDbIndex: uidNumber,gidNumber,loginShell eq,pres
olcDbIndex: uid,memberUid eq,pres,sub
olcDbIndex: nisMapName,nisMapEntry eq,pres,sub
olcDbIndex: uniqueMember eq,pres
/etc/openldap/ldif/12-cn=config_SudoGroup.ldif
#Add group of users that can sudo
dn: cn=YOUR_ADMIN_GROUP, ou=Group, dc=YOUR_DOMAIN,dc=YOUR_TLD
cn: sysops
gidNumber: YOUR_ADMIN_GROUP_GID
description: Group can sudo without restriction
objectclass: posixGroup
/etc/openldap/ldif/13-cn=config_AddUniqueIndex.ldif
#create unique indexes
dn: cn=module{0},cn=config
changetype: add
objectClass: olcModuleList
cn: module{0}
olcModuleLoad: /usr/lib64/openldap/unique.la
dn: olcOverlay=unique,olcDatabase={2}hdb,cn=config
changetype: add
objectClass: olcUniqueConfig
objectClass: olcOverlayConfig
objectClass: olcConfig
objectClass: top
olcOverlay: unique
dn: olcOverlay={4}unique,olcDatabase={2}hdb,cn=config
changetype: modify
add: olcUniqueURI
olcUniqueURI: ldap:///?uid?sub
olcUniqueURI: ldap:///?uidNumber?sub
olcUniqueURI: ldap:///?homeDirectory?sub