X-Git-Url: https://iankelling.org/git/?p=automated-distro-installer;a=blobdiff_plain;f=pxe-server;h=6137386a1188d9ab9c50e4bee783e7ee57dfc053;hp=37dbb7957c5ee572336359dd1755003318c4fe22;hb=HEAD;hpb=591c84435e22df12f2b5121c08578bff7c6bb047

diff --git a/pxe-server b/pxe-server
index 37dbb79..1e99b03 100755
--- a/pxe-server
+++ b/pxe-server
@@ -16,8 +16,14 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 
+[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
 
-x="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
+readonly this_file="$(readlink -f -- "${BASH_SOURCE[0]}")"
+script_dir="${this_file%/*}"
+# shellcheck source=./bash-trace
+source "${script_dir}/bash-trace"
+cd $script_dir
+PATH="$PATH:$PWD"
 
 
 usage() {
@@ -29,7 +35,10 @@ not general purpose, it has code specific to dhcp servers I run.
 Without TYPE, disable  server and fai server. In that case, HOST is only
 needed for fsf office network.
 
-HOST       A hostname known to the dhcp server, or default for all.
+HOST       Only do dhcp pxe for HOST. The hostname must be known to the dhcp
+           server to target its mac. Use "default" for all hosts.
+           Required in fsf office environment.
+
 TYPE       One of arch, parabola, plain, fai.
 
 -a         Don't setup pxe, just Wait for 2 dhcp acks, then disable the pxe
@@ -38,8 +47,9 @@ TYPE       One of arch, parabola, plain, fai.
            after the 2nd. I can't remember exactly why this caused a
            problem, but I'm hoping the sleep will take care of it.
 -d         Don't alter dhcp config. Only make sense for fai type, and on network
-           other than home or fsf.
+           other than home or fsf, when using fai-cd, or pxe-kexec.
 -k         Pass -k to myfai-chboot.
+--no-r     Pass --no-r to myfai-chboot.
 -r         Don't redeploy fai config. For example, if there is a different host
            that is mid-install.
 
@@ -56,6 +66,21 @@ rm tftpboot
 ln -s <arch/parabola/debian iso dir> tftpboot
 
 
+Notes on debugging pxe dhcp tftp:
+
+For debugging dhcp, add to /etc/dnsmasq.conf: log-dhcp
+
+Newer openwrt runs dnsmasq with a whitelist of readable files and dirs:
+
+ps ww :
+/sbin/ujail -t 5 -n dnsmasq -u -l -r /bin/ubus -r /etc/TZ -r /etc/dnsmasq.conf -r /etc/ethers -r /etc/group -r /etc/hosts -r /etc/passwd -w /tmp/dhcp.leases -r /tmp/dnsmasq.d -r /tmp/hosts -r /tmp/resolv.conf.d -r /usr/bin/jshn -r /usr/lib/dnsmasq/dhcp-script.sh -r /usr/share/dnsmasq/dhcpbogushostname.conf -r /usr/share/dnsmasq/rfc6761.conf -r /usr/share/dnsmasq/trust-anchors.conf -r /usr/share/libubox/jshn.sh -r /var/etc/dnsmasq.conf.cfg01411c -w /var/run/dnsmasq/ -- /usr/sbin/dnsmasq -C /var/etc/dnsmasq.conf.cfg01411c -k -x /var/run/dnsmasq/dnsmasq.cfg01411c.pid
+
+logging tftp requests:
+/etc/default/tftpd-hpa:
+add -vv:
+TFTP_OPTIONS="--secure -vv"
+jr -u tftpd-hpa -f
+
 Note: Uses GNU getopt options parsing style
 EOF
   exit $1
@@ -66,26 +91,29 @@ m() { printf "$pre %s\n"  "$*"; "$@"; }
 e() { printf "$pre %s\n"  "$*"; }
 err() { echo "[$(date +'%Y-%m-%d %H:%M:%S%z')]: $pre: $*" >&2; }
 
+PATH="/a/exe:$PATH"
+
 ##### begin command line parsing ########
 
 dhcp=true
 redep=true
 acks=2
 wait=false
-fsf=false
+fsf_office=false
 
 case $HOSTNAME in
-  x3|kw) fsf=true ;;
+  x3|kw) fsf_office=true ;;
 esac
 
 chboot_args=()
-temp=$(getopt -l help adkrSwh "$@") || usage 1
+temp=$(getopt -l no-r,help adkrSwh "$@") || usage 1
 eval set -- "$temp"
 while true; do
   case $1 in
     -a) wait=true; set=false; shift ;;
     -d) dhcp=false; shift ;;
     -k) chboot_args+=(-k); shift ;;
+    --no-r) chboot_args+=(--no-r); shift ;;
     -r) redep=false; shift ;;
     -S) chboot_args+=(-S); shift ;;
     -w) wait=true; set=true; shift ;;
@@ -119,10 +147,14 @@ esac
 
 
 if $wait && ! $dhcp; then
-  echo "$0: error -w conflicts with -d, choose one or other"
+  echo "$0: error -w conflicts with -d, choose one or other" >&2
   exit 1
 fi
 
+if $fsf_office && [[ ! $host ]]; then
+  echo "$0: at fsf_office, provide HOST arg" >&2
+  exit 1
+  fi
 
 if [[ $host && $host != default ]]; then
   host_tag="tag:$host,"
@@ -160,14 +192,14 @@ EOF
 }
 
 ack-wait() {
-  if $fsf; then
+  if $fsf_office; then
     wait_cmd="ssh tarantula.office.fsf.org tail -n0 -f /var/log/syslog"
   else
     wait_cmd="ssh cmc logread -f"
   fi
   wait_count=$1
   if [[ $host ]]; then
-    if $fsf; then
+    if $fsf_office; then
       host_regex=" $(getent hosts kw | awk '{print $1}' | sed 's/\./\\./g')"
     else
       host_regex=" $host"
@@ -186,7 +218,7 @@ ack-wait() {
 
 set-pxe() {
   $dhcp || return 0
-  if $fsf; then
+  if $fsf_office; then
     if [[ ! $cmd ]]; then
       e "removing pxe for $host on tarantula"
       ssh tarantula.office.fsf.org bash -e <<EOF
@@ -203,7 +235,7 @@ EOF
   else
     e "updating dnsmasq.conf:"
     m $cmd
-    ${cmd:-:}|ssh cmc "dd of=/etc/dnsmasq-dhcpopts.conf; /etc/init.d/dnsmasq reload
+    ${cmd:-:}|ssh cmc "dd of=/var/run/dnsmasq/dhcpopts.conf; /etc/init.d/dnsmasq reload
 $([[ $type == arch || $type == parabola ]] && echo archlike-pxe-mount)"
   fi
 }
@@ -226,7 +258,7 @@ if $set; then
   else
     # This will fail if faiserver is not setup, so ignore any
     # failure and don't bother us about it.
-    myfai-chboot &>/dev/null ||:
+    m myfai-chboot &>/dev/null ||:
   fi
 fi