20170627_jeffrey - silenceuncrio/diary GitHub Wiki
0905
keepalived 只要設定好 /etc/keepalived/keepalived.conf 之後
shell 下直接執行 keepalived 就好了
keepalived 瘋狂的打印 message 的地方如下
/* report_child_status returns true if the exit is a hard error, so unable to continue */
bool
report_child_status(int status, pid_t pid, char const *prog_name)
{
...
if (WIFSIGNALED(status)) {
if (WTERMSIG(status) == SIGSEGV) {
log_message(LOG_INFO, "%s exited due to segmentation fault (SIGSEGV).", prog_id);
log_message(LOG_INFO, " Please report a bug at %s", "https://github.com/acassen/keepalived/issues");
log_message(LOG_INFO, " %s", "and include this log from when keepalived started, what happened");
log_message(LOG_INFO, " %s", "immediately before the crash, and your configuration file.");
}
else
log_message(LOG_INFO, "%s exited due to signal %d", prog_id, WTERMSIG(status));
return false;
}
return false;
}
雖然利用 logread | grep keep 只看到下面的 log 一直在循環
2017-06-27 01:11:36 Mobile Router daemon.info Keepalived[24794]: Please report a bug at https://github.com/acassen/keepalived/issues
2017-06-27 01:11:36 Mobile Router daemon.info Keepalived[24794]: and include this log from when keepalived started, what happened
...
2017-06-27 01:11:39 Mobile Router daemon.info Keepalived[24794]: Please report a bug at https://github.com/acassen/keepalived/issues
2017-06-27 01:11:39 Mobile Router daemon.info Keepalived[24794]: and include this log from when keepalived started, what happened
不過稍微往上捲一下 console 畫面總算看到了完整的訊息
...
2017-06-27 01:11:05 Mobile Router daemon.alert Keepalived[24794]: Healthcheck child process(29316) died: Respawning
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Starting Healthcheck child process, pid=29318
2017-06-27 01:11:05 Mobile Router local2.debug Keepalived_healthcheckers[29318]: Initializing ipvs
2017-06-27 01:11:05 Mobile Router user.err modprobe: module ip_vs not found in modules.dep
2017-06-27 01:11:05 Mobile Router local2.info Keepalived_healthcheckers[29318]: IPVS: Can't initialize ipvs: Protocol not available
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Keepalived_healthcheckers exited due to segmentation fault (SIGSEGV).
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Please report a bug at https://github.com/acassen/keepalived/issues
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: and include this log from when keepalived started, what happened
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: immediately before the crash, and your configuration file.
2017-06-27 01:11:05 Mobile Router daemon.alert Keepalived[24794]: Healthcheck child process(29318) died: Respawning
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Starting Healthcheck child process, pid=29321
2017-06-27 01:11:05 Mobile Router local2.debug Keepalived_healthcheckers[29321]: Initializing ipvs
2017-06-27 01:11:05 Mobile Router user.err modprobe: module ip_vs not found in modules.dep
2017-06-27 01:11:05 Mobile Router local2.info Keepalived_healthcheckers[29321]: IPVS: Can't initialize ipvs: Protocol not available
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Keepalived_healthcheckers exited due to segmentation fault (SIGSEGV).
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Please report a bug at https://github.com/acassen/keepalived/issues
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: and include this log from when keepalived started, what happened
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: immediately before the crash, and your configuration file.
2017-06-27 01:11:05 Mobile Router daemon.alert Keepalived[24794]: Healthcheck child process(29321) died: Respawning
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Starting Healthcheck child process, pid=29324
2017-06-27 01:11:05 Mobile Router local2.debug Keepalived_healthcheckers[29324]: Initializing ipvs
2017-06-27 01:11:05 Mobile Router user.err modprobe: module ip_vs not found in modules.dep
2017-06-27 01:11:05 Mobile Router local2.info Keepalived_healthcheckers[29324]: IPVS: Can't initialize ipvs: Protocol not available
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Keepalived_healthcheckers exited due to segmentation fault (SIGSEGV).
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: Please report a bug at https://github.com/acassen/keepalived/issues
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: and include this log from when keepalived started, what happened
2017-06-27 01:11:05 Mobile Router daemon.info Keepalived[24794]: immediately before the crash, and your configuration file.
...
0935
將 log 去個頭看得比較清楚
Healthcheck child process(29321) died: Respawning
Starting Healthcheck child process, pid=29324
Initializing ipvs
module ip_vs not found in modules.dep
IPVS: Can't initialize ipvs: Protocol not available
Keepalived_healthcheckers exited due to segmentation fault (SIGSEGV).
Please report a bug at https://github.com/acassen/keepalived/issues
and include this log from when keepalived started, what happened
immediately before the crash, and your configuration file.
看起來就是 Healthcheck 這個 child process 掛了
參考一下 keepalived 有哪些 option 可以用
root@Mobile Router:~# keepalived -h
Usage: keepalived [OPTION...]
-f, --use-file=FILE Use the specified configuration file
-P, --vrrp Only run with VRRP subsystem
-C, --check Only run with Health-checker subsystem
-l, --log-console Log messages to local console
-D, --log-detail Detailed log messages
-S, --log-facility=[0-7] Set syslog facility to LOG_LOCAL[0-7]
-X, --release-vips Drop VIP on transition from signal.
-V, --dont-release-vrrp Don't remove VRRP VIPs and VROUTEs on daemon stop
-I, --dont-release-ipvs Don't remove IPVS topology on daemon stop
-R, --dont-respawn Don't respawn child processes
-n, --dont-fork Don't fork the daemon process
-d, --dump-conf Dump the configuration data
-p, --pid=FILE Use specified pidfile for parent process
-r, --vrrp_pid=FILE Use specified pidfile for VRRP child process
-c, --checkers_pid=FILE Use specified pidfile for checkers child process
-a, --address-monitoring Report all address additions/deletions notified via netlink
-s, --namespace=NAME Run in network namespace NAME (overrides config)
-m, --core-dump Produce core dump if terminate abnormally
-M, --core-dump-pattern=PATN Also set /proc/sys/kernel/core_pattern to PATN (default 'core')
-i, --config_id id Skip any configuration lines beginning '@' that don't match id
-v, --version Display the version number
-h, --help Display this help message
使用 -P - Only run with VRRP subsystem
keepalived 已經不會瘋狂的打印 message 了
1025
目前測試環境如下
+-------------+
|DHCP Server |
|192.168.0.250|
+---+---------+
|
+----------------------+---+ WAN
| |
+---+----------------+ +---+----------------+
|M300 | |M301 |
|* WAN: DHCP Client | |* WAN: DHCP Client |
|* LAN: 192.168.1.100| |* LAN: 192.168.1.101|
+---+----------------+ +---+----------------+
| |
+---+----------------------+----------------+
|Virtual Router: 192.168.1.200 |
+---+---------------------------------------+
|
+--------------------------+ LAN
|
+---+----------------+
|PC |
|* LAN: 192.168.1.1 |
|* GW: 192.168.1.200|
+--------------------+
M300 的 VRRP 設定 - /etc/keepalived/keepalived.conf
vrrp_instance m30x {
state MASTER
interface lan
virtual_router_id 200
priority 150
advert_int 1
virtual_ipaddress {
192.168.1.200
}
}
M301 的 VRRP 設定 - /etc/keepalived/keepalived.conf
vrrp_instance m30x {
state BACKUP
interface lan
virtual_router_id 200
priority 160
advert_int 1
virtual_ipaddress {
192.168.1.200
}
}
從 PC 端進行測試
jeffrey@jeffrey-U-100:~$ ping 192.168.1.100
PING 192.168.1.100 (192.168.1.100) 56(84) bytes of data.
64 bytes from 192.168.1.100: icmp_seq=1 ttl=64 time=0.548 ms
64 bytes from 192.168.1.100: icmp_seq=2 ttl=64 time=0.487 ms
64 bytes from 192.168.1.100: icmp_seq=3 ttl=64 time=0.488 ms
64 bytes from 192.168.1.100: icmp_seq=4 ttl=64 time=0.490 ms
^C
--- 192.168.1.100 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3067ms
rtt min/avg/max/mdev = 0.487/0.503/0.548/0.030 ms
jeffrey@jeffrey-U-100:~$ ping 192.168.1.101
PING 192.168.1.101 (192.168.1.101) 56(84) bytes of data.
64 bytes from 192.168.1.101: icmp_seq=1 ttl=64 time=0.602 ms
64 bytes from 192.168.1.101: icmp_seq=2 ttl=64 time=0.492 ms
64 bytes from 192.168.1.101: icmp_seq=3 ttl=64 time=0.541 ms
64 bytes from 192.168.1.101: icmp_seq=4 ttl=64 time=0.812 ms
^C
--- 192.168.1.101 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3050ms
rtt min/avg/max/mdev = 0.492/0.611/0.812/0.125 ms
jeffrey@jeffrey-U-100:~$ ping 192.168.1.200
PING 192.168.1.200 (192.168.1.200) 56(84) bytes of data.
64 bytes from 192.168.1.200: icmp_seq=1 ttl=64 time=0.618 ms
64 bytes from 192.168.1.200: icmp_seq=2 ttl=64 time=0.520 ms
64 bytes from 192.168.1.200: icmp_seq=3 ttl=64 time=0.537 ms
64 bytes from 192.168.1.200: icmp_seq=4 ttl=64 time=0.806 ms
^C
--- 192.168.1.200 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3057ms
rtt min/avg/max/mdev = 0.520/0.620/0.806/0.114 ms
jeffrey@jeffrey-U-100:~$ arp
Address HWtype HWaddress Flags Mask Iface
192.168.1.100 ether 00:03:79:03:00:00 C enp1s0
192.168.1.200 ether 00:03:79:03:01:00 C enp1s0
192.168.1.101 ether 00:03:79:03:01:00 C enp1s0
jeffrey@jeffrey-U-100:~$ ping 192.168.0.250
PING 192.168.0.250 (192.168.0.250) 56(84) bytes of data.
64 bytes from 192.168.0.250: icmp_seq=1 ttl=63 time=4.75 ms
64 bytes from 192.168.0.250: icmp_seq=2 ttl=63 time=1.74 ms
64 bytes from 192.168.0.250: icmp_seq=3 ttl=63 time=1.03 ms
64 bytes from 192.168.0.250: icmp_seq=4 ttl=63 time=1.21 ms
^C
--- 192.168.0.250 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 1.035/2.187/4.753/1.504 ms
jeffrey@jeffrey-U-100:~$ tracepath 192.168.0.250
1?: [LOCALHOST] pmtu 1500
1: 192.168.1.101 2.608ms
1: 192.168.1.101 1.338ms
2: 192.168.0.250 2.736ms reached
Resume: pmtu 1500 hops 2 back 2
拔掉 M310 的 LAN 端 網路線
jeffrey@jeffrey-U-100:~$ tracepath 192.168.0.250
1?: [LOCALHOST] pmtu 1500
1: 192.168.1.100 1.531ms
1: 192.168.1.100 0.799ms
2: 192.168.0.250 3.234ms reached
Resume: pmtu 1500 hops 2 back 2
1055
不太確定這樣的測試結果正不正確
回頭看一下之前 survey 的文章
- vrrp协议与keepalived详解
- VRRP (Virtual Router Redundancy Protocol) Keepalived Configuration
- VRRP On Linux Using Keepalived – The Basics
- 17.5 Installing and Configuring Keepalived
- Configuring, Attacking and Securing VRRP on Linux
1110
先收集一下兩邊的 log
利用 logread | grep -i keep - -i 表示忽略大小寫
M300
root@Mobile Router:~# logread | grep -i keep
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Received advert with higher priority 160, ours 150
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering BACKUP STATE
2017-06-27 02:29:32 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Transition to MASTER STATE
2017-06-27 02:29:33 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering MASTER STATE
2017-06-27 02:48:39 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Received advert with higher priority 160, ours 150
2017-06-27 02:48:39 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering BACKUP STATE
2017-06-27 02:53:42 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Transition to MASTER STATE
2017-06-27 02:53:43 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering MASTER STATE
2017-06-27 02:54:15 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Received advert with higher priority 160, ours 150
2017-06-27 02:54:15 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering BACKUP STATE
2017-06-27 02:54:35 Mobile Router local1.info Keepalived_vrrp[28754]: Kernel is reporting: interface lan DOWN
2017-06-27 02:54:35 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Now in FAULT state
2017-06-27 02:54:39 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering BACKUP STATE
2017-06-27 02:54:45 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Transition to MASTER STATE
2017-06-27 02:54:46 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering MASTER STATE
2017-06-27 02:54:54 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Received advert with higher priority 160, ours 150
2017-06-27 02:54:54 Mobile Router local1.info Keepalived_vrrp[28754]: VRRP_Instance(m30x) Entering BACKUP STATE
M310
root@Mobile Router:/var/log# logread | grep -i keep
2017-06-27 02:23:07 Mobile Router daemon.info Keepalived[13127]: Starting Keepalived v1.3.5 (06/09,2017), git commit v1.5-23-g30d98fd+
2017-06-27 02:23:07 Mobile Router daemon.info Keepalived[13127]: Unable to resolve default script username 'keepalived_script' - ignoring
2017-06-27 02:23:07 Mobile Router daemon.info Keepalived[13127]: Opening file '/etc/keepalived/keepalived.conf'.
2017-06-27 02:23:07 Mobile Router daemon.info Keepalived[13128]: Starting VRRP child process, pid=13129
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[13129]: Registering Kernel netlink reflector
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[13129]: Registering Kernel netlink command channel
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[13129]: Registering gratuitous ARP shared channel
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[13129]: Opening file '/etc/keepalived/keepalived.conf'.
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[13129]: Using LinkWatch kernel netlink reflector...
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[13129]: VRRP_Instance(m30x) Entering BACKUP STATE
2017-06-27 02:23:07 Mobile Router local1.info Keepalived_vrrp[13129]: VRRP_Instance(m30x) forcing a new MASTER election
2017-06-27 02:23:08 Mobile Router local1.info Keepalived_vrrp[13129]: VRRP_Instance(m30x) Transition to MASTER STATE
2017-06-27 02:23:09 Mobile Router local1.info Keepalived_vrrp[13129]: VRRP_Instance(m30x) Entering MASTER STATE
2017-06-27 02:48:40 Mobile Router local1.info Keepalived_vrrp[13129]: VRRP_Instance(m30x) Received advert with lower priority 150, ours 160, forcing new election
2017-06-27 02:54:15 Mobile Router local1.info Keepalived_vrrp[13129]: VRRP_Instance(m30x) Received advert with lower priority 150, ours 160, forcing new election
看起來 VRRP 有在動了... 試著解析一下 log
1140
在進行 icos module 之前要先測一下 IPv6 的部分
1305
monkeyjj time
1425
回頭再 review 一下 VRRP 的進度
感覺這禮拜五周會可以先報告一下 keepalived 的測試結果
最好能加上 WEB UI 的構想
1640
花點時間再整理一下 Proscend MCSV
不勉強用英文
因為是為了方便 M30x 小組參考用途