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在两个节点上

tag-icon • tag-icon centos drbd
在两个节点上

使用两个节点安装DRBD。

  • 节点1
  • 节点2

遵循本指南：

http://www.learnitguide.net/2016/07/how-to-install-and-configure-drbd-on-linux.html

在两个节点上

resource testdata1 {
    protocol C;
    on node1 {
            device /dev/drbd0;
            disk /dev/sdb;
            address 192.168.0.1:7788;
            meta-disk internal;
    }
    on node2 {
            device /dev/drbd0;
            disk /dev/sdb;
            address 192.168.0.2:7788;
            meta-disk internal;
    }
}

在节点2上

run 之后systemctl start drbd，该进程处于pending状态。等待了很久也没有结果。但是node1在这一步是正常的。

在节点1上

运行之后drbdadm primary testdata1，出现这个错误：

0: Failure: (127) Device minor not allocated
additional info from kernel:
unknown minor
Command 'drbdsetup-84 primary 0' terminated with exit code 10

编辑

systemctl status drbd在node2上运行

● drbd.service - DRBD -- please disable. Unless you are NOT using a cluster manager.
   Loaded: loaded (/usr/lib/systemd/system/drbd.service; disabled; vendor preset: disabled)
   Active: activating (start) since 木 2017-07-20 01:18:32 EDT; 1min 32s ago
 Main PID: 9137 (drbd)
   CGroup: /system.slice/drbd.service
       ├─9137 /bin/bash /lib/drbd/drbd start
       ├─9145 drbdadm wait-con-int
       └─9146 drbdsetup-84 wait-connect 0

 7月 20 01:18:32 node2 drbd[9137]: WARN: stdin/stdout is not a TTY; using /dev/con...ied
 7月 20 01:18:42 node2 drbd[9137]: WARN: stdin/stdout is not a TTY; using /dev/con......
 7月 20 01:18:42 node2 drbd[9137]: ***********************************************...***
 7月 20 01:18:42 node2 drbd[9137]: DRBD's startup script waits for the peer node(s...ar.
 7月 20 01:18:42 node2 drbd[9137]: - If this node was already a degraded cluster b...the
 7月 20 01:18:42 node2 drbd[9137]: reboot, the timeout is 0 seconds. [degr-wfc-timeout]
 7月 20 01:18:42 node2 drbd[9137]: - If the peer was available before the reboot, ...out
 7月 20 01:18:42 node2 drbd[9137]: is 0 seconds. [wfc-timeout]
 7月 20 01:18:42 node2 drbd[9137]: (These values are for resource 'testdata1'; 0 s...er)
 7月 20 01:18:42 node2 drbd[9137]: To abort waiting for DRBD connections, kill thi...145
Hint: Some lines were ellipsized, use -l to show in full.

journalctl -u drbd在node2上运行

-- Logs begin at 水 2017-07-12 22:45:19 EDT, end at 木 2017-07-20 01:18:42 EDT. --
 7月 18 05:49:18 node2 systemd[1]: Starting DRBD -- please disable. Unless you are NOT using a cluster manager....
 7月 18 05:49:18 node2 drbd[23883]: Starting DRBD resources: drbd.d/testdata1.res:12: in resource testdata1, on node2:
 7月 18 05:49:18 node2 drbd[23883]: IP 198.10.0.219 not found on this host.
 7月 18 05:49:18 node2 systemd[1]: drbd.service: main process exited, code=exited, status=20/n/a
 7月 18 05:49:18 node2 systemd[1]: Failed to start DRBD -- please disable. Unless you are NOT using a cluster manager..
 7月 18 05:49:18 node2 systemd[1]: Unit drbd.service entered failed state.
 7月 18 05:49:18 node2 systemd[1]: drbd.service failed.
 7月 18 05:50:57 node2 systemd[1]: Starting DRBD -- please disable. Unless you are NOT using a cluster manager....
 7月 18 05:50:57 node2 drbd[23898]: Starting DRBD resources: [
 7月 18 05:50:57 node2 drbd[23898]: create res: testdata1
 7月 18 05:50:57 node2 drbd[23898]: prepare disk: testdata1
 7月 18 05:50:57 node2 drbd[23898]: adjust disk: testdata1:failed(apply-al:20)
 7月 18 05:50:57 node2 drbd[23898]: adjust net: testdata1
 7月 18 05:50:57 node2 drbd[23898]: ]
 7月 18 05:50:57 node2 drbd[23898]: WARN: stdin/stdout is not a TTY; using /dev/consoleopen('/dev/console, O_RDONLY): Permission denied
 7月 18 05:51:07 node2 drbd[23898]: WARN: stdin/stdout is not a TTY; using /dev/console..........
 7月 18 05:51:07 node2 drbd[23898]: ***************************************************************
 7月 18 05:51:07 node2 drbd[23898]: DRBD's startup script waits for the peer node(s) to appear.
 7月 18 05:51:07 node2 drbd[23898]: - If this node was already a degraded cluster before the
 7月 18 05:51:07 node2 drbd[23898]: reboot, the timeout is 0 seconds. [degr-wfc-timeout]
 7月 18 05:51:07 node2 drbd[23898]: - If the peer was available before the reboot, the timeout
 7月 18 05:51:07 node2 drbd[23898]: is 0 seconds. [wfc-timeout]
 7月 18 05:51:07 node2 drbd[23898]: (These values are for resource 'testdata1'; 0 sec -> wait forever)
 7月 18 05:51:07 node2 drbd[23898]: To abort waiting for DRBD connections, kill this process: kill 23916
 7月 20 01:15:48 node2 systemd[1]: Stopped DRBD -- please disable. Unless you are NOT using a cluster manager..
 7月 20 01:16:06 node2 systemd[1]: Starting DRBD -- please disable. Unless you are NOT using a cluster manager....
 7月 20 01:16:06 node2 drbd[9092]: Starting DRBD resources: [
 7月 20 01:16:06 node2 drbd[9092]: adjust disk: testdata1:failed(apply-al:20)
 7月 20 01:16:06 node2 drbd[9092]: ]
 7月 20 01:16:06 node2 drbd[9092]: WARN: stdin/stdout is not a TTY; using /dev/consoleopen('/dev/console, O_RDONLY): Permission denied
 7月 20 01:16:13 node2 drbd[9092]: WARN: stdin/stdout is not a TTY; using /dev/console.......
 7月 20 01:16:13 node2 systemd[1]: Stopped DRBD -- please disable. Unless you are NOT using a cluster manager..
 7月 20 01:18:32 node2 systemd[1]: Starting DRBD -- please disable. Unless you are NOT using a cluster manager....
 7月 20 01:18:32 node2 drbd[9137]: Starting DRBD resources: [
 7月 20 01:18:32 node2 drbd[9137]: ]
 7月 20 01:18:32 node2 drbd[9137]: WARN: stdin/stdout is not a TTY; using /dev/consoleopen('/dev/console, O_RDONLY): Permission denied
 7月 20 01:18:42 node2 drbd[9137]: WARN: stdin/stdout is not a TTY; using /dev/console..........
 7月 20 01:18:42 node2 drbd[9137]: ***************************************************************
 7月 20 01:18:42 node2 drbd[9137]: DRBD's startup script waits for the peer node(s) to appear.
 7月 20 01:18:42 node2 drbd[9137]: - If this node was already a degraded cluster before the
 7月 20 01:18:42 node2 drbd[9137]: reboot, the timeout is 0 seconds. [degr-wfc-timeout]
 7月 20 01:18:42 node2 drbd[9137]: - If the peer was available before the reboot, the timeout
 7月 20 01:18:42 node2 drbd[9137]: is 0 seconds. [wfc-timeout]
 7月 20 01:18:42 node2 drbd[9137]: (These values are for resource 'testdata1'; 0 sec -> wait forever)
 7月 20 01:18:42 node2 drbd[9137]: To abort waiting for DRBD connections, kill this process: kill 9145

cat /proc/drbd在node2上运行

GIT-hash: 9976da086367a2476503ef7f6b13d4567327a280 build by akemi@Build64R7, 2016-12-04 01:08:48
 0: cs:WFConnection ro:Secondary/Unknown ds:Inconsistent/DUnknown C r----s
    ns:0 nr:0 dw:0 dr:0 al:8 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:2097052

答案1

DRBD 当前未连接到其对等方。这在/proc/drbd连接状态字段下清楚显示：cs:WFConnection

此外，磁盘状态报告为磁盘状态字段中显示的不一致：ds:Inconsistent/DUnknown

您需要确定它们无法连接的原因，让它们连接起来，然后您需要按照 DRBD 用户指南中概述的步骤完成初始同步：https://docs.linbit.com/doc/users-guide-84/s-initial-full-sync/

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