raid10 replace docs, various fixes

[automated-distro-installer] / myfai-chboot-local

diff --git a/myfai-chboot-local b/myfai-chboot-local
index 6d7e019607869a4ecfff4a12feab8807caf38acb..b2df864f129e32cbb2a1fdc5202192c115956b5d 100755 (executable)
--- a/myfai-chboot-local
+++ b/myfai-chboot-local
@@ -34,18 +34,23 @@ host=$1
 # assuming ipv4, or else we might need to deal with multiple addresses
 # in an ipv4 + ipv6 network.
 my_ip=$(ip -4 route get 8.8.8.8 | sed -nr 's,^.*src\s+(\S+).*,\1,p')
-if [[ $x =~ [[:space:]] ]]; then
+if [[ ! $my_ip || $my_ip =~ [[:space:]] ]]; then
     echo "$0: error: failed to get \$my_ip, got: $my_ip"
     exit 1
 fi
 
 if [[ $host == default ]]; then
-    ip=$network
+    ip='*'
 elif [[ $host == [0-9]*.[0-9]*.[0-9]*.[0-9]* ]]; then
-    ip=$host
+    ip=$host/32
 else
     type -t host &>/dev/null || apt-get -y install dnsutils
     ip=$(host $host | sed -rn 's/^\S+ has address //p;T;q')/32
+    if [[ ! $ip || $ip =~ [[:space:]] ]]; then
+        echo "$0: error: failed to get \$my_ip, got: $my_ip"
+        exit 1
+    fi
+
 fi
 
 if modprobe nfsd &>/dev/null; then
@@ -55,12 +60,18 @@ if modprobe nfsd &>/dev/null; then
     root_arg="$my_ip:/srv/fai/nfsroot:vers=3"
     # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
     # I restrict it to one ip as simple but imperfect access control.
-    sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
-    cat >>/etc/exports <<EOF
+
+    # we may chattr +i /etc/exports if we dun want it modified
+    # for example, if we made these exports more widely available
+    # while doing multiple installs or a recovery.
+    if [[ -w /etc/exports ]]; then
+        sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
+        cat >>/etc/exports <<EOF
 /srv/fai/config $ip(async,ro,no_subtree_check)
 /srv/fai/nfsroot $ip(async,ro,no_subtree_check,no_root_squash)
 EOF
-    exportfs -ra
+        exportfs -ra
+    fi
     systemctl start nfs-server # assumes recent os
 else
     std_arg="-u http://faiserver:8080/config.tar.gz"