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--- linux:skoleni:ha [2015/02/26 01:52]
admin
+++ linux:skoleni:ha [2016/12/05 15:30] (current)
admin
@@ Line 1: / Line 1: @@
+====== HA - basics ======
 Note: Fibre channel - cheap stuff!!!
@@ Line 27: / Line 28: @@
   /sbin/modprobe drbd
-Partition DRBD on both machines (the ugly way):
+====Partition DRBD on both machines (the ugly way):====
+If your linux box doesn't detect new disk automaticly, you can try rescanning the scsi bus
+   echo "- - -" >/sys/class/scsi_host/host0/scan
   [root@node1 ~]# fdisk -cu /dev/sdb
@@ Line 36: / Line 41: @@
 ==== Setup the network ====
-<file ifcfg-eth1 bash>
+<file bash ifcfg-eth1>
 DEVICE="eth1"
 BOOTPROTO="none"
@@ Line 46: / Line 51: @@
 ONBOOT="yes"
 TYPE="Ethernet"
-</file
+</file>
 ==== DRBD config ====
@@ Line 102: / Line 107: @@
 Careful reader could have notices we are having Diskless/Inconsistent. Initialize (create-dm) the disk again or zero it (dd if=/dev/zero) and initialize again and thing should be fine.
-  [root@node1 ~]# drbdadm -- --overwrite-data-of-peer primary repdata
+  [root@node1 ~]# drbdadm -- --overwrite-data-of-peer primary mail_disk
+====== UCARP (VRRP) ======
+Open the page and install epel
+http://mirror.hosting90.cz/epel/6/x86_64/repoview/epel-release.html
+Or try using this direct link, but might be unavailable later
+   yum install http://mirror.hosting90.cz/epel/6/x86_64/epel-release-6-8.noarch.rpm
+Install ucarp
+   yum install ucarp
+config
+<file bash /etc/ucarp.d/vip-001.conf>
+  VIP_ADDRESS="192.168.5.123"
+</file>
+<file bash /etc/ucarp.d/vip-common.conf>
+PASSWORD="love"
+BIND_INTERFACE="eth0"
+SOURCE_ADDRESS="192.168.5.39"
+# If you have extra options to add, see "ucarp --help" output
+OPTIONS="--shutdown --preempt"
+</file>

linux/skoleni/ha.1424911966.txt.gz · Last modified: 2015/02/26 01:52 by admin