Upload PiHole HA Scripts and Configurations

PiHole/HA/99-dns-vip.conf

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+# Place under /etc/dnsmasq.d/99-dns-vip.conf
+# This will propagate the DNS VIP of keepalived as DNS Server over DHCP
+dhcp-option=option:dns-server,192.168.1.4

PiHole/HA/Keepalived/backup_keepalived.conf

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+# Place under /etc/keepalived/keepalived.conf on BACKUP pihole
+global_defs {
+  router_id pihole-dns-02
+  script_user root
+  enable_script_security
+}
+
+vrrp_script chk_ftl {
+  script "/etc/scripts/chk_ftl"
+  interval 1
+  weight -10
+}
+
+vrrp_instance PIHOLE {
+  state BACKUP
+  interface eth0
+  virtual_router_id 55
+  priority 145
+  advert_int 1
+  unicast_src_ip 192.168.1.3
+  unicast_peer {
+    192.168.1.2
+  }
+
+  authentication {
+    auth_type PASS
+        auth_pass secret
+  }
+
+  virtual_ipaddress {
+    192.168.1.4/24
+  }
+
+  track_script {
+    chk_ftl
+  }
+}

PiHole/HA/Keepalived/master_keepalived.conf

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+# Place under /etc/keepalived/keepalived.conf on MASTER pihole
+global_defs {
+  router_id pihole-dns-01
+  script_user root
+  enable_script_security
+}
+
+vrrp_script chk_ftl {
+  script "/usr/local/scripts/chk_ftl"
+  interval 1
+  weight -10
+}
+
+vrrp_instance PIHOLE {
+  state MASTER
+  interface eth0
+  virtual_router_id 55
+  priority 150
+  advert_int 1
+  unicast_src_ip 192.168.2.2
+  unicast_peer {
+    192.168.2.3
+  }
+
+  authentication {
+    auth_type PASS
+    auth_pass secret
+  }
+
+  virtual_ipaddress {
+    192.168.2.4/24
+  }
+
+  track_script {
+    chk_ftl
+  }
+}

PiHole/HA/chk_ftl

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+#!/bin/sh
+
+# Place under /etc/scripts for FTL Status check of keepalived
+
+STATUS=$(ps ax | grep -v grep | grep pihole-FTL)
+
+if [ "$STATUS" != "" ]
+then
+    exit 0
+else
+    exit 1
+fi