New subject: Creating a static route

Tuesday, 19 February 2019

Hi Doug,

Thanks for the update, I'm glad that we could help and everything
worked out just fine!

I also opened a BZ, asking to add a note in the documentation regarding
this issue.

Thanks in advance,

On Mon, Feb 18, 2019 at 7:15 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
wrote:

...
 Lev,

 Just wanted to update you on the progress.  We created the persistent
 static routes and rules and the data is routing correctly over the required
 gateway.

 Thank you for all of your help!!!

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Thursday, February 14, 2019 9:14 AM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 Just one more thing that I forgot to mention, even though it may be
 obvious - you can use subnets in both rules and routes.

 So if all the IPs you want to route sit in the same subnet then you can
 contain them with a single command e.g. "to 172.22.20.0/24 priority 32764"

 Thanks in advance,

 On Thu, Feb 14, 2019 at 4:59 PM Lev Veyde <lveyde(a)redhat.com&gt; wrote:

 Hi Doug,

 Sure, np.

 >> 1. - yes it is the priority setting of the specific rule. Basically you
 put in the file the post "ip rule add" part of the command e.g. for "ip
 rule add to 172.22.20.31 priority 32764" you need to put a line of "to
 172.22.20.31 priority 32764"

 >> 2. - yes, the same priority can be used for all of them. E.g. if you
 want to route 172.22.20.31, 172.22.34.56 and 172.22.67.89 you will need to
 add:

 to 172.22.20.31 priority 32764
 to 172.22.34.56 priority 32764
 to 172.22.67.89 priority 32764

 into the rule-<interface name> file e.g. rule-ovirtmgmt or rule-eno3.

 Please note that you will also need to add the static route for each one
 of these as well w/ "ip route add ... " command e.g. "ip route add
 172.22.20.31 via 172.21.12.61".

 You can also use the route-<interface name> putting just the route info
 part, similar to the "ip rule" e.g. for equivalent of "ip route add
 172.22.20.31 via 172.21.12.61" you need put in the file a line with the
 content "172.22.20.31 via 172.21.12.61".

 For routes it's important to use specifically the route-ovirtmgmt file
 since the script automatically adds the device to the route command i.e.
 you can put the following lines into your route-ovirtmgmt file:

 172.22.20.31 via 172.21.12.61
 172.22.34.56 via 172.21.12.61
 172.22.67.89 via 172.21.12.68

 (In case the first 2 of the mentioned IPs should be routed through the
 172.21.12.61 gateway, and the last one should be routed through the
 172.21.12.68 gateway).

 For the reference you can take a look at the
 /etc/sysconfig/network-scripts/ifup-routes script.
 It does the actual processing of both "route" and "rule" files for
all
 network interfaces on a system.

 Please feel free to contact if you have further questions.

 Thanks in advance,

 On Thu, Feb 14, 2019 at 3:39 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 Thanks for the response.  I was just getting ready to contact you about
 this.  I do have 2 follow-up questions, if you don’t mind.

    1. When we were talking about creating the route that would be enabled
    again after a reboot, you said to modify “the
    /etc/sysconfig/network-scripts/rule-<interface name> e.g. rule-ovirtmgmt or
    rule-eno3 (just put in the file "to 172.22.20.31 priority 32764”.  Is
    priority 32764 for the ip rule command?
    2. If I have multiple IPs that I would need to create a static route,
    would the priority be 32764 for all of them?

 Once again, thank you for all of your help with this!!

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Thursday, February 14, 2019 3:19 AM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 Sorry that it took a bit of time to get back to you.
 Managed to catch today somebody from the oVirt/RHV network team to discuss
 the issue.

 It seems that we don't currently support custom static routes on the
 hosts, so the workaround that I suggested is the way to do it.

 Thanks in advance,

 On Tue, Feb 12, 2019 at 11:12 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Will do.  Thanks again for all your help!!  Looking forward to a
 confirmation of the fix or a different solution.  Either way, I know I have
 a working fix.

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 3:09 PM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 Just a small note - the commands in the rc.local should be placed *before*
 the very last line (the touch ... command).

 Thanks in advance,

 On Tue, Feb 12, 2019 at 10:56 PM Lev Veyde <lveyde(a)redhat.com&gt; wrote:

 Hi Doug,

 Thanks, you're welcome!

 It's generally possible to add persistent rules by either using the legacy
 /etc/rc.d/rc.local boot script (chmod +x /etc/rc.d/rc.local and put the
 relevant commands at the end of the file, that way you can actually run any
 commands) or by using the /etc/sysconfig/network-scripts/rule-<interface
 name> e.g. rule-ovirtmgmt or rule-eno3 (just put in the file "to
 172.22.20.31 priority 32764" - without quotes), however of course this
 needs to be tested to verify that it works.

 I forwarded the issue to the network team and hopefully they will update
 soon.

 Thanks in advance,

 On Tue, Feb 12, 2019 at 10:17 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 You have no idea how helpful you have been!!!!!!  I’ve been having this
 issue for over 2 months and starting to cause major problems.

 Please let me know if you find a better solution.  I’m going to wait to
 hear back from you before implementing.

 If we go with this workaround, is there a way to add the ip rule so it’s
 persistent?  I know how to make the ip route add persistent.

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 2:14 PM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 Yes, it looks like it did.

 I'll try to catch somebody from my local oVirt/RHV networking team to take
 a look at this issue, maybe there is a better solution for that issue than
 my workaround.

 But meanwhile you can use this workaround (ip route add + ip rule add),
 just please be aware that these should be run after each host reboot, since
 these commands are not persistent.

 Thanks in advance,

 On Tue, Feb 12, 2019 at 10:07 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 Here’s the results.  It appears to fix the issue!!

 From non-working system:

 -bash-4.2# ip rule add to 172.22.20.31 priority 32764

 -bash-4.2# traceroute 172.22.20.31

 traceroute to 172.22.20.31 (172.22.20.31), 30 hops max, 60 byte packets

 1  CenteraAmesAN1.emcins.com (172.21.12.61)  0.487 ms  1.082 ms  1.313 ms

 2  192.168.90.9 (192.168.90.9)  1.507 ms  2.090 ms  2.294 ms

 3  pdputopcomm01.emcins.com (172.22.20.31)  1.403 ms  1.401 ms  1.348 ms

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 2:01 PM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 OK, I think that I have a guess of what may have happened here...

 Can you please run the following command on the (non-working) host:

 ip rule add to 172.22.20.31 priority 32764

 This needs to be run in addition to the ip route add ... command.

 And then please run the traceroute command and let me know if that fixed
 the issue.

 Thanks in advance,

 On Tue, Feb 12, 2019 at 9:30 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 Here you go.

 From non-working system

 -bash-4.2# ip rule

 0:      from all lookup local

 32764:  from all to 172.21.0.0/16 iif ovirtmgmt lookup 2887058719

 32765:  from 172.21.0.0/16 lookup 2887058719

 32766:  from all lookup main

 32767:  from all lookup default

 From working system

 [root@paputopcomm04 ~]# ip rule

 0:      from all lookup local

 32766:  from all lookup main

 32767:  from all lookup default

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 12:35 PM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 That shouldn't really matter, since ovirtmgmt is just a bridged interface,
 and unless I'm missing something it shouldn't really affect routing.

 Can you please also provide the output of "ip rule" from both working and
 non-working hosts ?

 Thanks in advance,

 On Tue, Feb 12, 2019 at 8:01 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 Here’s the ip route from the server that worked and didn’t work

 IP Route from server that worked

 [root@paputopcomm04 ~]# ip route

 default via 172.21.0.250 dev eno3

 169.254.0.0/16 dev eno3 scope link metric 1002

 169.254.0.0/16 dev eno4 scope link metric 1005

 172.17.0.0/16 dev eno4 proto kernel scope link src 172.17.53.18

 172.21.0.0/16 dev eno3 proto kernel scope link src 172.21.5.34

 *172.22.20.31 via 172.21.12.61 dev eno3*

 172.26.0.0/16 dev eno1 proto kernel scope link src 172.26.5.34

 IP Route from server that didn't work

 -bash-4.2# ip route

 default via 172.21.0.250 dev ovirtmgmt

 169.254.0.0/16 dev eno4 scope link metric 1004

 169.254.0.0/16 dev ovirtmgmt scope link metric 1021

 172.17.0.0/16 dev eno4 proto kernel scope link src 172.17.53.15

 172.21.0.0/16 dev ovirtmgmt proto kernel scope link src 172.21.5.31

 *172.22.20.31 via 172.21.12.61 dev ovirtmgmt*

 172.26.0.0/16 dev eno1 proto kernel scope link src 172.26.5.31

 We have had our network team look and they don’t know.  As I said, the was
 setup by Commvault.  It’s almost like the ovirtmgmt interface will not
 allow a route add due to the way it’s configured?   They, Commvault, are
 trying different things within their software to get this working, but it’s
 causing us more problems.  I figured I would take a shot and see if
 someone, who works with the oVirt software, would have any ideas.

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 11:51 AM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 This is indeed quite weird...

 It looks like the OS for some reason disregards the static route that you
 have added.

 BTW, have you verified that it's indeed was added by running "ip route"
 following the "ip route add ..." command ?

 Maybe somebody from the network team has an idea of what may be the cause
 of this issue...

 Thanks in advance,

 On Tue, Feb 12, 2019 at 7:36 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 I’m showing you the same outputs (ip a, ip route, traceroute, ip route
 add, and traceroute) from another server in this group that doesn’t use the
 ovirtmgmt for it’s default interface.

 [root@paputopcomm04 ~]# ip a

 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN qlen 1

     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

     inet 127.0.0.1/8 scope host lo

        valid_lft forever preferred_lft forever

     inet6 ::1/128 scope host

        valid_lft forever preferred_lft forever

 2: eno3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen
 1000

     link/ether 90:1b:0e:db:bc:c0 brd ff:ff:ff:ff:ff:ff

     inet 172.21.5.34/16 brd 172.21.255.255 scope global eno3

        valid_lft forever preferred_lft forever

     inet6 fe80::921b:eff:fedb:bcc0/64 scope link

        valid_lft forever preferred_lft forever

 3: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen
 1000

     link/ether 90:1b:0e:e8:da:03 brd ff:ff:ff:ff:ff:ff

     inet 172.26.5.34/16 brd 172.26.255.255 scope global eno1

        valid_lft forever preferred_lft forever

     inet6 fe80::921b:eff:fee8:da03/64 scope link

        valid_lft forever preferred_lft forever

 4: eno2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN
 qlen 1000

     link/ether 90:1b:0e:e8:da:04 brd ff:ff:ff:ff:ff:ff

 5: eno4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen
 1000

     link/ether 90:1b:0e:db:bc:c1 brd ff:ff:ff:ff:ff:ff

     inet 172.17.53.18/16 brd 172.17.255.255 scope global eno4

        valid_lft forever preferred_lft forever

     inet6 fe80::921b:eff:fedb:bcc1/64 scope link

        valid_lft forever preferred_lft forever

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]# ip route

 default via 172.21.0.250 dev eno3

 169.254.0.0/16 dev eno3 scope link metric 1002

 169.254.0.0/16 dev eno4 scope link metric 1005

 172.17.0.0/16 dev eno4 proto kernel scope link src 172.17.53.18

 172.21.0.0/16 dev eno3 proto kernel scope link src 172.21.5.34

 172.26.0.0/16 dev eno1 proto kernel scope link src 172.26.5.34

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]# traceroute 172.22.20.31

 traceroute to 172.22.20.31 (172.22.20.31), 30 hops max, 60 byte packets

 1  ames-acc1-agg-1.emcins.com (172.21.0.246)  1.081 ms  1.816 ms  1.832 ms

 2  192.168.200.30 (192.168.200.30)  0.639 ms 192.168.200.14
 (192.168.200.14)  1.063 ms  1.577 ms

 3  192.168.200.101 (192.168.200.101)  3.110 ms ames-sw-wanrtr.emcins.com
 (192.168.200.97)  3.191 ms  3.277 ms

 4  192.168.100.26 (192.168.100.26)  4.146 ms  4.273 ms  4.394 ms

 5  192.168.100.98 (192.168.100.98)  1.893 ms  2.364 ms  2.397 ms

 6  192.168.100.50 (192.168.100.50)  5.707 ms 192.168.100.33
 (192.168.100.33)  5.134 ms 192.168.100.50 (192.168.100.50)  4.105 ms

 7  pdputopcomm01.emcins.com (172.22.20.31)  1.359 ms  1.374 ms  1.351 ms

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]# ip route add 172.22.20.31 via 172.21.12.61

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]#

 [root@paputopcomm04 ~]# traceroute 172.22.20.31

 traceroute to 172.22.20.31 (172.22.20.31), 30 hops max, 60 byte packets

 1  CenteraAmesAN1.emcins.com (172.21.12.61)  6.184 ms  6.475 ms  6.686 ms

 2  192.168.90.9 (192.168.90.9)  1.770 ms  1.979 ms  2.189 ms

 3  pdputopcomm01.emcins.com (172.22.20.31)  1.405 ms *  1.354 ms

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 11:07 AM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 In most cases it should not be required, especially as my guess (again it
 would be easier if you could post the output of the "ip a" and "ip
route")
 is that the eno1 is part of the ovirtmgmt bridge.

 What is the output of the "traceroute 172.22.20.31" that you get on the
 host after you have added the static route?

 Thanks in advance,

 On Tue, Feb 12, 2019 at 6:58 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 One other question, since there are multiple enabled interfaces (ovirtmgmt
 and eno1), do I need to specify an interface for the route add.

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 10:50 AM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 What do you mean by "static route is refused"?

 What is the error message(s) you see?

 Can you please try to add the route with the following command:

 ip route add 172.22.20.31 via 172.21.12.61

 If that doesn't work, then please provide more details, i.e. what is the
 exact error message(s) you see, the version of your OS and oVirt, output of
 "ip a" and "ip route" on your host(s), so that it will be easier to
help
 you.

 Thanks in advance,

 On Tue, Feb 12, 2019 at 6:43 PM Doug Maxfield <Doug.L.Maxfield(a)emcins.com&gt;
 wrote:

 Lev,

 Thanks for your response.

 If I attempt to manually add the route using route add:

 route add -net 172.22.20.31 netmask 255.255.255.255 gw 172.21.12.61 dev
 ovirtmgmt

 This static route is refused and all traffic is routed over the default
 gateway.

 But if I use a server that doesn’t use the ovirtmgmt interface and set the
 same static route, the required data is routed correctly over that static
 route.

 [image: Count On EMC] <http://www.emcins.com/>

 *Doug Maxfield *| Senior Operating Systems Analyst

 *EMC Insurance Companies *717 Mulberry St | Des Moines, IA 50265
 Tel: 515.345.4507 | Fax: 866.331.1522
 Doug.L.Maxfield(a)EMCIns.com | www.emcins.com

 *From:* Lev Veyde <lveyde(a)redhat.com&gt;
 *Sent:* Tuesday, February 12, 2019 10:34 AM
 *To:* Doug Maxfield <Doug.L.Maxfield(a)EMCIns.com&gt;
 *Cc:* users <users(a)ovirt.org&gt;
 *Subject:* Re: [ovirt-users] Creating a static route

 Hi Doug,

 What is the exact problem you are having while attempting to add a static
 route on the hosts?

 Thanks in advance,

 On Tue, Feb 12, 2019 at 5:23 PM <doug.l.maxfield(a)emcins.com&gt; wrote:

 Good Morning,
 New to oVirt.  We are using this with a backup solution from Commvault.
 The issue that we are having is that we need to setup a static route for
 specific data between 2 remote sites.  The ovirtmgmt is configured with the
 correct IP and gateway for the server.  We need to route data over a
 different gateway so that we don't "max out" the default network
connection
 between the 2 sites.  Example below

 Ovirtmgmt IP - 172.21.5.31
 Gateway IP - 172.21.0.250

 We need any traffic with a destination of 172.22.20.31(Remote site) to
 route over this gateway, 172.21.12.61

 There are multiple servers in this configuration.  Servers that are not
 using the ovirtmgmt interface for their default, we are able to route the
 data.  The only problem is with attempting to setup a different static
 route on the ovirtmgmt interfaces.

 Thanks in advance for any help!!!

 Doug
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 *Lev Veyde*

 Software Engineer, RHCE | RHCVA | MCITP

 Red Hat Israel

 <https://www.redhat.com>

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 <https://red.ht/sig>