Ubuntu 14.4 comes with Python 2.7.6 built-in, but I'd like to upgrade it to 2.7.9 (it has security features that I want).
Is that even possible? If so, how can this be achieved?
I want a node to be considered "online" (and thus able to get resources) only after it is ready for them (that is, a particular process is up and running.)
Is there a way to configure pacemaker to check if a particular process is running, and only then set the node "online"?
Thanks!
I'm running Corosync + Pacemaker on Ubuntu 14.4. I set up two nodes with two VIPs, and when I bring pacemaker down in one node, the VIPs do go to the other, but no traffic actually goes through the system until I manually run ifdown eth1 and ifup eth1 (the VIPs are on eth1) on that node. This is true for both nodes.
I can see that the VIPs did get transferred ok using ifconfig. But running bmon I see that no traffic goes through until I run ifdown / ifup.
crm configure show:
node $id="6" node1
node $id="3" node2
primitive VIP_3 ocf:heartbeat:IPaddr2 \
params ip="10.0.1.112" nic="eth1" iflabel="3" \
op monitor interval="10s" on-fail="restart" \
op start interval="0" timeout="1min" \
op stop interval="0" timeout="30s"
primitive VIP_4 ocf:heartbeat:IPaddr2 \
params ip="10.0.1.111" nic="eth1" iflabel="4" \
op monitor interval="10s" on-fail="restart" \
op start interval="0" timeout="1min" \
op stop interval="0" timeout="30s"
property $id="cib-bootstrap-options" \
dc-version="1.1.10-42f2063" \
cluster-infrastructure="corosync" \
no-quorum-policy="ignore" \
stonith-enabled="false"
crm_mon -1:
Last updated: Mon Feb 16 16:16:42 2015
Last change: Mon Feb 16 15:43:30 2015 via crmd on node1
Stack: corosync
Current DC: node1 (6) - partition with quorum
Version: 1.1.10-42f2063
2 Nodes configured
2 Resources configured
Online: [ node1 node2 ]
VIP_4 (ocf::heartbeat:IPaddr2): Started node1
VIP_3 (ocf::heartbeat:IPaddr2): Started node1
ifconfig (on node1):
eth0 Link encap:Ethernet HWaddr 00:0c:29:b2:19:ba
inet addr:10.0.0.192 Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:feb2:19ba/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:253948 errors:0 dropped:73 overruns:0 frame:0
TX packets:116222 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:95400133 (95.4 MB) TX bytes:20760101 (20.7 MB)
eth1 Link encap:Ethernet HWaddr 00:0c:29:b2:19:c4
inet6 addr: fe80::20c:29ff:feb2:19c4/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24763724 errors:0 dropped:19558 overruns:0 frame:0
TX packets:23253310 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15916162148 (15.9 GB) TX bytes:15816322712 (15.8 GB)
eth1:3 Link encap:Ethernet HWaddr 00:0c:29:b2:19:c4
inet addr:10.0.1.112 Bcast:10.0.1.240 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1:4 Link encap:Ethernet HWaddr 00:0c:29:b2:19:c4
inet addr:10.0.1.111 Bcast:10.0.1.239 Mask:255.255.255.255
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:62428 errors:0 dropped:0 overruns:0 frame:0
TX packets:62428 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:8020634 (8.0 MB) TX bytes:8020634 (8.0 MB)
/etc/network/interfaces:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.0.0.192
netmask 255.255.255.0
gateway 10.0.0.138
dns-nameservers 8.8.8.8 8.8.4.4
auto eth1
iface eth1 inet manual
post-up ip route add 10.0.1.0/24 dev eth1 table 11
post-up ip rule add from 10.0.1.0/24 table 11
post-up ip rule add to 10.0.1.0/24 table 11
pre-down ip rule delete table 11
pre-down ip rule delete table 11
pre-down ip route flush table 11
Any ideas of what I'm doing wrong? I would expect that after Pacemaker starts up the IP addresses, traffic will start flowing through them without need for running ifdown eth1 and ifup eth1.
Thanks!
I'm looking for a way to have a master/slave fail-over that share 2 common virtual-IPs (on Ubuntu):
- vip1: 10.0.0.171
- vip2: 10.0.0.172
- master: 10.0.0.181
- slave: 10.0.0.182
I need the following functionality:
- If both master & slave machines are up, master gets both VIPs
- If master goes down, slave gets both VIPs
- If master goes back up, it gets back both VIPs
- If only master is up, well, master gets the VIPs (of course.)
I was able to achieve this easily with heartbeat, but it seems like corosync+pacemaker is "the future." Unfortunately, finding good, concise documentation has proven difficult for me to find...
This is my heartbeat setup:
/etc/hosts:
10.0.0.181 master-host
10.0.0.182 slave-host
/etc/ha.d/ha.cf:
deadtime 3
warntime 5
initdead 10
bcast eth0
auto_failback on
node master-host
node slave-host
use_logd yes
/etc/ha.d/haresources:
master-host IPaddr::10.0.0.171/24/eth0 IPaddr::10.0.0.172/24/eth0
As a bonus (something that heartbeat seems to be unable to do on its own) it would be nice to be able to:
- Have both the master & slave be unaware of one another (i.e. they don't know each other IPs)
- they can share a password
- each knows if it's a master or a slave
Extra bonus:
- being able to add a second slave, such as slave: 10.0.0.183
Is this something that can be accomplished with corosync & pacemaker?
I'm trying to configure pacemaker with a config file (that I can automatically generate and then ask pacemaker to "reload"). But all the examples that I see are for command-line commands or the interactive editor. (I'm running Ubuntu).
The command-line approach is something like this:
crm configure primitive VIP ocf:IPaddr2 params ip=10.0.2.200 nic=eth0 op monitor interval=10s
While the interactive mode is something like this:
sudo crm configure
And then we add the res_ip resource:
crm(live)configure# primitive res_ip ocf:heartbeat:IPaddr2 params ip="102.169.122.254" cidr_netmask="24" nic="eth0"
crm(live)configure# commit
crm(live)configure# exit
But I want a static config file that I can update and reload. Something like the /etc/ha.d/haresources file that heartbeat uses. Is that a possibility?
Lots of tutorials out there show to set-up carp using ifconfig: https://www.netbsd.org/docs/guide/en/chap-carp.html
I'm wondering if it's possible to do the same using /etc/network/interfaces?
For instance, how can I duplicate this:
# ifconfig carp0 create
# ifconfig carp0 vhid 1 pass lanpasswd \
carpdev em0 advskew 100 10.0.0.1 255.255.255.0
in /etc/network/interfaces?
Thanks!!