Jalapeno
Jalapeno is a kvm virtual machine currently running on Gourd. It serves as our primary DNS server.
Upgraded Jalapeño.
Virtual Hardware
- Memory: 512 MB
- Hard Disk: 10 GB
- Network 1 (eth0): Farm-Bridge
- Network 2 (eth1): UNH-Bridge
Network Settings
- IP Address farm (eth0): 10.0.0.253 -- temp jalapeno2 10.0.0.237 (yendi)
- IP Address UNH (eth1): 132.177.88.37
Software and Services
IPTables
Jalapeno uses the standard NPG iptables firewall. It allows ssh, DNS, and CUPS ipp connections.
Named
Named provides DNS hostname resolution for the farm.physics.unh.edu backend network. DNS configuration files are located in the /var/named directory.
Backup Configuration
/etc/rsync-backup.conf
# Backups are 'pull' only. Too bad there isn't a better way to enforce this.
read only = yes
# Oh for the ability to retain CAP_DAC_READ_SEARCH, and no other.
#uid = root
# XXX There seems to be an obscure bug with pam_ldap and rsync whereby
# getpwnam(3) segfaults when (and only when) archiving /etc. Using a numeric
# uid avoids this bug. Only verified on Fedora Core 2.
uid = 0
# There's not much point in putting the superuser in a chroot jail
# use chroot = yes
# This isn't really an effective "lock" per se, since the value is per-module,
# but there really ought never be more than one, and it would at least
# ensure serialized backups.
max connections = 1
[usr_local]
path = /usr/local
comment = unpackaged software
[opt]
path = /opt
comment = unpackaged software
[etc]
path = /etc
comment = conf files
[var]
path = /var
comment = user and system storage
Upgrade to Centos7
Initialization
On Pumpkin (which is in the 88 network, while Jalapeño needs to be on 180!)
qemu-img create -f qcow2 /kvm/images/jalepeno_new.qcow2 10G virt-install -v --name=jalapeno2 --memory 512 --os-type=linux --os-variant=rhel7 --cdrom=/net/data/endeavour1/System/Centos/CentOS-7-x86_64-DVD-1503-01.iso --disk path=/kvm/images/jalapeno_new.qcow2,size=10 --network=bridge:farmbr --network=bridge:unhbr --vnc --vncport=5904
Next, install a minimal machine, with installer, and setup the back-end IP address from installer GUI. Give it a root password.
Login to machine, check that network is up! Kill NetworkManager, and check the ifcfg, then ifup the network
Next, edit /etc/yum.conf to use the endeavour proxy, add: proxy=http://endeavour.farm.physics.unh.edu:3128 at end of file. Save. Then: "yum update" and "yum upgrade"
