Work on modular installer

install.seed.example

@@ -0,0 +1,35 @@
+###
+### General definitions
+###
+
+# The Debian release to use
+debrelease="bullseye"
+
+# The Debian mirror to use
+debmirror="http://debian.mirror.rafal.ca/debian"
+
+# Package list (installed during debootstrap)
+debpkglist="lvm2,parted,gdisk,grub-pc,grub-efi-amd64,linux-image-amd64,sudo,vim,gpg,gpg-agent,aptitude,openssh-server,vlan,ifenslave,python2,python3,ca-certificates,ntp"
+
+# Package list (installed in chroot)
+suppkglist="firmware-linux,firmware-linux-nonfree,firmware-bnx2,firmware-bnx2x"
+
+###
+### Per-host definitions
+###
+
+# The hostname of the system (set per-run)
+target_hostname="HOSTNAME"
+
+# The target disk (either path or model to find; path overrides model if set)
+target_disk_path="/dev/disk/by-path/pci-0000:01:00.0-scsi-0:2:0:0"  # Example: Dell BOSS on R6515 via explicit path
+target_disk_model="DELLBOSS VD"                                     # Example: Dell BOSS on R6515 via model name
+
+# SSH key method (usually tftp)
+target_keys_method="tftp"
+
+# SSH key path
+target_keys_path="keys.txt"
+
+# Deploy username
+target_deploy_user="deploy"

install.sh

@@ -6,10 +6,13 @@ if [[ $( whoami ) != "root" ]]; then
     exit 1
 fi
 
-logfile="/tmp/pvc-install.log"
+iso_name="XXDATEXX"
+target_deploy_user="XXDEPLOYUSERXX"
+
 supported_debrelease="buster bullseye"
 default_debrelease="buster"
 default_debmirror="http://debian.mirror.rafal.ca/debian"
+
 debpkglist="lvm2,parted,gdisk,grub-pc,grub-efi-amd64,linux-image-amd64,sudo,vim,gpg,gpg-agent,aptitude,openssh-server,vlan,ifenslave,python2,python3,ca-certificates,ntp"
 suppkglist="firmware-linux,firmware-linux-nonfree,firmware-bnx2,firmware-bnx2x"
 
@@ -20,11 +23,85 @@ suppkglist="firmware-linux,firmware-linux-nonfree,firmware-bnx2,firmware-bnx2x"
 # roles will overwrite it by default during configuration.
 root_password="hCb1y2PF"
 
+# Obtain the mode from the kernel command line
+kernel_cmdline=$( cat /proc/cmdline )
+install_option="$( awk '{
+    for(i=1; i<=NF; i++) {
+        if($i ~ /pvcinstall.preseed/) {
+            print $i;
+        }
+    }
+}' <<<"${kernel_cmdline}" | awk -F'=' '{ print $NF }' )"
+
+seed_config() {
+    echo "Hello ${1}"
+    seed_vlan="$( awk '{
+        for(i=1; i<=NF; i++) {
+            if($i ~ /pvcinstall.seed_vlan/) {
+                print $i;
+            }
+        }
+    }' <<<"${kernel_cmdline}" | awk -F'=' '{ print $NF }' )"
+    seed_host="$( awk '{
+        for(i=1; i<=NF; i++) {
+            if($i ~ /pvcinstall.seed_host/) {
+                print $i;
+            }
+        }
+    }' <<<"${kernel_cmdline}" | awk -F'=' '{ print $NF }' )"
+    seed_file="$( awk '{
+        for(i=1; i<=NF; i++) {
+            if($i ~ /pvcinstall.seed_file/) {
+                print $i;
+            }
+        }
+    }' <<<"${kernel_cmdline}" | awk -F'=' '{ print $NF }' )"
+
+    if [[ -n ${seed_vlan} ]]; then
+        modprobe 8021q
+    fi
+
+    # Perform DHCP on all interfaces to come online
+    for interface in $( ip address | grep '^[0-9]' | grep 'eno\|enp\|ens\|wlp' | awk '{ print $2 }' | tr -d ':' ); do
+        ip link set ${interface} up
+        if [[ -n ${seed_vlan} ]]; then
+            vconfig add ${interface} ${seed_vlan}
+            dhclient ${interface}.${seed_vlan}
+        else
+            dhclient ${interface}
+        fi
+    done
+
+    # Fetch the seed config
+    tftp -m binary "${seed_host}" -c get "${seed_file}" /tmp/install.seed
+
+    . /tmp/install.seed
+
+    # Handle the target disk
+    if [[ -n ${target_disk_path} ]]; then
+        target_disk="$( readlink ${target_disk_path} )"
+        if [[ ! -b ${target_disk} ]]; then
+            echo "Invalid disk!"
+            exit 1
+        fi
+    else
+        # Find the (first) disk with the given model
+        for disk in /dev/sd?; do
+            disk_model="$( fdisk -l ${disk} | grep 'Disk model:' | sed 's/Disk model: //g' )"
+            if [[ ${disk_model} == ${target_disk_model} ]]; then
+                target_disk="${disk}"
+                break
+            fi
+        done
+    fi
+}
+
+interactive_config() {
     clear
     
-echo "--------------------------------------------------------"
+    echo "-----------------------------------------------------"
-echo "| PVC Node installer (XXDATEXX) |"
+    echo "| PVC Node installer (${iso_name}) |"
-echo "--------------------------------------------------------"
+    echo "-----------------------------------------------------"
     echo
     echo "This LiveCD will install a PVC node base system ready for bootstrapping with 'pvc-ansible'."
     echo
@@ -262,6 +339,7 @@ while [[ -z ${debmirror} ]]; do
         echo
     done
     
+    target_keys_method="wget"
     echo "5) Please enter an HTTP URL containing a text list of SSH authorized keys to"
     echo "fetch. These keys will be allowed access to the deployment user 'XXDEPLOYUSER'"
     echo "via SSH."
@@ -269,12 +347,12 @@ echo ""
     echo "Leave blank to bypass this and use a password instead."
     echo
     echo -n "> "
-read target_keys_url
+    read target_keys_path
-if [[ -z ${target_keys_url} ]]; then
+    if [[ -z ${target_keys_path} ]]; then
         echo
         echo "No SSH keys URL specified. Falling back to password configuration."
         echo
-    echo "5) Please enter a password (hidden), twice, for the deployment user 'XXDEPLOYUSERXX'."
+        echo "5) Please enter a password (hidden), twice, for the deployment user '${target_deploy_user}'."
         while [[ -z "${target_password}" ]]; do
             echo
             echo -n "> "
@@ -291,17 +369,28 @@ if [[ -z ${target_keys_url} ]]; then
             fi
         done
     else
-    while ! wget -O /dev/null ${target_keys_url} &>/dev/null; do
+        while ! wget -O /dev/null ${target_keys_path} &>/dev/null; do
             echo
             echo "Please enter a valid SSH keys URL."
             echo
             echo -n "> "
-        read target_keys_url
+            read target_keys_path
         done
         echo
-    echo "SSH key source '${target_keys_url}' successfully validated."
+        echo "SSH key source '${target_keys_path}' successfully validated."
     fi
     echo
+}    
+
+case ${install_option} in
+    on)
+        seed_config
+    ;;
+    *)
+        interactive_config
+    ;;
+esac
+
 
 titlestring_text="| Proceeding with installation of host '${target_hostname}'. |"
 titlestring_len="$(( $( wc -c <<<"${titlestring_text}" ) - 2 ))"
@@ -314,6 +403,8 @@ echo
 echo "LOGFILE: ${logfile}"
 echo
 
+exit 0
+
 set -o errexit
 exec 1> >( tee -ia ${logfile} )
 exec 2> >( tee -ia ${logfile} >/dev/null )
@@ -480,14 +571,21 @@ echo "done."
 
 echo -n "Adding deployment user... "
 mv ${target}/home ${target}/var/home >&2
-chroot ${target} useradd -u 200 -d /var/home/XXDEPLOYUSERXX -m -s /bin/bash -g operator -G sudo XXDEPLOYUSERXX >&2
+chroot ${target} useradd -u 200 -d /var/home/${target_deploy_user} -m -s /bin/bash -g operator -G sudo ${target_deploy_user} >&2
-chroot ${target} mkdir -p /var/home/XXDEPLOYUSERXX/.ssh
+chroot ${target} mkdir -p /var/home/${target_deploy_user}/.ssh
-if [[ -n ${target_keys_url} ]]; then
+if [[ -n ${target_keys_path} ]]; then
-wget -O ${target}/var/home/XXDEPLOYUSERXX/.ssh/authorized_keys ${target_keys_url}
+    case ${target_keys_method} in
-chroot ${target} chmod 0600 /var/home/XXDEPLOYUSERXX/.ssh/authorized_keys
+        wget)
-chroot ${target} chown -R XXDEPLOYUSERXX:operator /var/home/XXDEPLOYUSERXX
+            wget -O ${target}/var/home/${target_deploy_user}/.ssh/authorized_keys ${target_keys_path}
+        ;;
+        tftp)
+            tftp -m binary "${seed_host}" -c get "${target_keys_path}" ${target}/var/home/${target_deploy_user}/.ssh/authorized_keys
+        ;;
+    esac
+    chroot ${target} chmod 0600 /var/home/${target_deploy_user}/.ssh/authorized_keys
+    chroot ${target} chown -R ${target_deploy_user}:operator /var/home/${target_deploy_user}
 else
-echo "XXDEPLOYUSERXX:${target_password}" | chroot ${target} chpasswd >&2
+    echo "${target_deploy_user}:${target_password}" | chroot ${target} chpasswd >&2
 fi
 echo "done."