Systems Administration Problem Solvers
www.tediosity.com
This is what your rc.conf should contain to configure LAGG with FreeBSD:
### LAGG NFS Interface ###
ifconfig_bce3=”mtu 9000 up”
ifconfig_bce0=”mtu 9000 up”
cloned_interfaces=”lagg0″
ifconfig_lagg0=”laggproto roundrobin laggport bce3 laggport bce0″
ipv4_addrs_lagg0=”10.10.40.10/24″
Change the bce* interfaces to whatever your server is using for the network interfaces.
The “mtu 9000 up” is correct!
This script will replicate a ZFS pool to another FreeBSD machine. The sync process is quick, after the initial copy, and depending upon how much data changed.
Download this shell script: http://www.tediosity.com/zfsrep.sh
This script was written by another author for Solaris and I have fixed it to work on FreeBSD.
I chose to use: /root/zfsrep as the script location.
mkdir -p /root/zfsrep/zfsrep.snapshots
touch /root/zfsrep/zfsrep.log
cp zfsrep.sh /root/zfsrep/
vi zfsrep.sh and modify the e-mail address and location of the script (if you are not using /root/zfsrep)
Initial run:
/root/zfsrep/zfsrep.sh sinit nfs/datastore nfs/datastore 10.10.30.20
Subsequent runs:
/root/zfsrep/zfsrep.sh sync nfs/datastore nfs/datastore 10.10.30.20
Create a cronjob and forget about it.
If you make any changes, error fixes, or enhancements please e-mail them to me!! I love seeing other people’s creativity and putting their ideas to work in a production environment.
email: admin -at- tediosity.com
The following describes a procedure to set up NIS network name service under Red Hat Linux. This is geared toward a small intallation with only one domain. However, it should be fairly evident how to add more NIS domains. The NIS domain name has nothing to do with any DNS naming convention being used.
In these examples, the following conventions are used:
NIS domain: “internal”
Code or configuration file data: bold
Root prompt on NIS master server: master#
Root prompt on NIS client host: client#
Setting up a NIS master server:
yum install yp-tools ypbind ypserv portmap ntpd
Set up “ntpd” service or otherwise make sure the host’s clock is synchronized.
ntpdate pool.ntp.org
chkconfig ntpd on
/etc/init.d/ntpd start
Edit /etc/yp.conf:
domain internal server ip.of.nis.server
Edit /etc/ypserv.conf:
[The below settings are, by default, activated in CentOS config]
dns: no
files: 30
xfr_check_port: yes
* : * : shadow.byname : port
* : * : passwd.adjunct.byname : port
Edit /etc/sysconfig/network:
NISDOMAIN=”internal”
Set NIS domain name:
master# domainname internal
master# ypdomainname internal
Create file /var/yp/securenets:
host 127.0.0.1
255.255.255.0 10.0.0.0
Make sure the “portmap” service is running:
master# service portmap start
master# chkconfig portmap on
Edit File: /etc/nsswitch.conf
passwd: files nis
shadow: files nis
group: files nis
Start ypserv service:
master# service ypserv start
Check that it’s listening:
master# rpcinfo -u localhost ypserv
You should see:
program 100004 version 1 ready and waiting
program 100004 version 2 ready and waiting
Initialize the NIS maps:
master# /usr/lib/yp/ypinit -m
Specify local hostname, Ctrl-D, y, let finish.
Start up ypbind, yppasswdd, ypxfrd:
master# service ypbind start
master# service yppasswdd start
master# service ypxfrd start
Set YP services to run on boot-up:
master# chkconfig ypserv on
master# chkconfig ypbind on
master# chkconfig yppasswdd on
master# chkconfig ypxfrd on
NIS client host setup
Required packages: yp-tools ypbind portmap
Edit /etc/sysconfig/network:
NISDOMAIN=internal
Edit /etc/yp.conf:
domain internal server ip.of.master.server
Edit /etc/hosts:
ip.of.master.server hostname.domain hostname
Set NIS domain-name:
client# domainname internal
client# ypdomainname internal
Edit /etc/nsswitch.conf:
passwd: files nis
shadow: files nis
group: files nis
Make sure the portmap service is running:
client# service portmap start
client# chkconfig portmap on
The /etc/hosts.allow file will need rules allowing access from localhost and the NIS master server.
Start ypbind service:
client# service ypbind start
client# chkconfig ypbind on
Test it out:
client# rpcinfo -u localhost ypbind
client# ypcat passwd