If eth0 holds virtual IP as its secondary IP and I bring down eth0 by command "ifdown eth0", CTDB will automatically pull eth0 up. Sometime it goes wrong. The virtual IP becomes primary IP, and origin primary IP turns into a secondary IP or just missing. If the origin primary IP is missing, I have to run "ifup eth0" though CTDB has pulled eth0 up. CTDB uses “ip link set eth0 up” to pull up a NIC. I suppose “ifdown/ifup” are not compatible with “ip link set”. -----邮件原件----- 发件人: Martin Schwenke [mailto:martin at meltin.net] 发送时间: 2016年9月14日 19:00 收件人: Weidong via samba 抄送: weidong 12656 (RD); xusangdi 11976 (RD) 主题: Re: [Samba] How to disable CTDB pulling up NICs On Wed, 14 Sep 2016 06:02:13 +0000, Weidong via samba <samba at lists.samba.org> wrote:> Thanks for your attention. CTDB manages NICs with event scripts. > Virtual IP attaches on a NIC as a secondary IP. When noticing the NIC > down, CTDB will pull it up. Does any one know how to disable the > action? I do not want CTDB pull any NIC up. Does the command 'ctdb > disablescript 10.interface' has any unexpected effect?10.interface actually removes/adds public IP addresses from/to interfaces. So, without this script CTDB's public IP addresses will not work. There is no supported way to disable the behaviour of pulling up interfaces. Why do you want to want to disable this? peace & happiness, martin ------------------------------------------------------------------------------------------------------------------------------------- 本邮件及其附件含有杭州华三通信技术有限公司的保密信息，仅限于发送给上面地址中列出 的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、 或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本 邮件！ This e-mail and its attachments contain confidential information from H3C, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
On Sun, 18 Sep 2016 01:36:20 +0000, Weidong via samba <samba at lists.samba.org> wrote:> If eth0 holds virtual IP as its secondary IP and I bring down eth0 by > command "ifdown eth0", CTDB will automatically pull eth0 up. Sometime > it goes wrong. The virtual IP becomes primary IP, and origin primary > IP turns into a secondary IP or just missing. If the origin primary > IP is missing, I have to run "ifup eth0" though CTDB has pulled eth0 > up.Why do you want to take an interface down if it is used for CTDB public IP addresses? An interface that hosts CTDB public IP addresses should be used only for that purpose. You can put a static address on that interface, which can help the node reach infrastructure (e.g. DNS or Active Directory server) but there should never be a need to take the interface down. You should use another, separate private network for the fixed, private node IP addresses. If you need to do anything else then you should consider a 3rd network.> CTDB uses “ip link set eth0 up” to pull up a NIC. I suppose > “ifdown/ifup” are not compatible with “ip link set”.Depending on your platform, the ip command (as in "ip link set") might be used as a low-level primitive in the implementation of ifdown/ifup. You can not expect to be doing arbitrary network configuration on an interface while CTDB is trying to use and manage it... peace & happiness, martin
Thank you very much for reply. Our test team insists on simulating network failure by using ifdown instead of just unpluging the cable. I have to modify the event script 10.interface. When noticing a NIC failure, CTDB just marks the NIC down and do not try to pull it up. It seems to work fine. -----邮件原件----- 发件人: Martin Schwenke [mailto:martin at meltin.net] 发送时间: 2016年9月18日 18:49 收件人: Weidong via samba 抄送: weidong 12656 (RD) 主题: Re: [Samba] 答复: How to disable CTDB pulling up NICs On Sun, 18 Sep 2016 01:36:20 +0000, Weidong via samba <samba at lists.samba.org> wrote:> If eth0 holds virtual IP as its secondary IP and I bring down eth0 by > command "ifdown eth0", CTDB will automatically pull eth0 up. Sometime > it goes wrong. The virtual IP becomes primary IP, and origin primary > IP turns into a secondary IP or just missing. If the origin primary IP > is missing, I have to run "ifup eth0" though CTDB has pulled eth0 up.Why do you want to take an interface down if it is used for CTDB public IP addresses? An interface that hosts CTDB public IP addresses should be used only for that purpose. You can put a static address on that interface, which can help the node reach infrastructure (e.g. DNS or Active Directory server) but there should never be a need to take the interface down. You should use another, separate private network for the fixed, private node IP addresses. If you need to do anything else then you should consider a 3rd network.> CTDB uses “ip link set eth0 up” to pull up a NIC. I suppose > “ifdown/ifup” are not compatible with “ip link set”.Depending on your platform, the ip command (as in "ip link set") might be used as a low-level primitive in the implementation of ifdown/ifup. You can not expect to be doing arbitrary network configuration on an interface while CTDB is trying to use and manage it... peace & happiness, martin ------------------------------------------------------------------------------------------------------------------------------------- 本邮件及其附件含有杭州华三通信技术有限公司的保密信息，仅限于发送给上面地址中列出 的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、 或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本 邮件！ This e-mail and its attachments contain confidential information from H3C, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!
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