Keepalived::instance1 s in a crash loop : pidfile_write : Cannot open /run/keepalived.pid pidfile

Installing and Using OpenWrt
1

Hello,

I just installed

openwrt-19.07.3-x86-64-combined-ext4.img

After installing keepalived:

opkg update
opkg install keepalived

Cannot start up. Getting a following error:

......
Tue Aug 18 08:14:36 2020 daemon.info Keepalived[22842]: pidfile_write : Cannot open /run/keepalived.pid pidfile
Tue Aug 18 08:14:36 2020 daemon.info Keepalived[22842]: Stopped Keepalived v2.0.18 (07/26,2019)
Tue Aug 18 08:14:41 2020 daemon.info Keepalived[22853]: Starting Keepalived v2.0.18 (07/26,2019)
Tue Aug 18 08:14:41 2020 daemon.info Keepalived[22853]: WARNING - keepalived was build for newer Linux 4.14.193, running on Linux 4.14.180 #0 SMP Sat May 16 18:32:20 2020
Tue Aug 18 08:14:41 2020 daemon.info Keepalived[22853]: Command line: '/usr/sbin/keepalived' '-n' '-f' '/tmp/keepalived.conf'
Tue Aug 18 08:14:41 2020 daemon.info Keepalived[22853]: Opening file '/tmp/keepalived.conf'.
Tue Aug 18 08:14:41 2020 daemon.info Keepalived[22853]: pidfile_write : Cannot open /run/keepalived.pid pidfile
Tue Aug 18 08:14:41 2020 daemon.info Keepalived[22853]: Stopped Keepalived v2.0.18 (07/26,2019)
Tue Aug 18 08:14:41 2020 daemon.info procd: Instance keepalived::instance1 s in a crash loop 6 crashes, 0 seconds since last crash

2

You could try to start the daemon from command line with debug switch (if available) and watch for an more usefull error message.
It might be enough to link /tmp/var/run to /run or to configure the path within command line or configfile.

3

yes thank you pwned :slight_smile:

So the right way of the installation:

ln -s /tmp/run /run
opkg update
opkg install keepalived

edit /etc/config/keepalived
need to comment this 2 line

config global_defs
        option alt_config_file          "/etc/keepalived/keepalived.conf"

from here this guide can be followed
https://openwrt.org/docs/guide-user/network/high-availability

i used a following minimalist config just for test:

global_defs {
   router_id OWRT-V-01         # give unique id for each router
   vrrp_skip_check_adv_addr
}

vrrp_instance VI_1 {
    state MASTER           # The other router is  BACKUP
    interface br-mng         # the interface where the vrrp is running
    virtual_router_id 56
    priority 200                  # The other router is 100 (the lower is the backup)
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass weuigf89
    }


    virtual_ipaddress {
        192.168.56.254            # ip should be changed 
    }
}

for testing
stop both router

service keepalived stop

first start the backup then the master
service keepalived restart; logread -f

The slave first became master then slave when the higher priority router is started :

root@OWRT-V-02:/etc/keepalived#  service keepalived restart; logread -f
Tue Aug 18 19:32:42 2020 local1.info Keepalived_vrrp[5475]: Stopped
Tue Aug 18 19:32:42 2020 daemon.info Keepalived[5472]: Stopped Keepalived v2.0.18 (07/26,2019)
Tue Aug 18 19:32:42 2020 daemon.info Keepalived[7411]: Starting Keepalived v2.0.18 (07/26,2019)
Tue Aug 18 19:32:42 2020 daemon.info Keepalived[7411]: WARNING - keepalived was build for newer Linux 4.14.193, running on Linux 4.14.180 #0 SMP Sat May 16 18:32:20 2020
Tue Aug 18 19:32:42 2020 daemon.info Keepalived[7411]: Command line: '/usr/sbin/keepalived' '-n' '-f' '/tmp/keepalived.conf'
Tue Aug 18 19:32:42 2020 daemon.info Keepalived[7411]: Opening file '/tmp/keepalived.conf'.
Tue Aug 18 19:32:42 2020 daemon.info Keepalived[7411]: Starting VRRP child process, pid=7412
Tue Aug 18 19:32:42 2020 local1.info Keepalived_vrrp[7412]: Registering Kernel netlink reflector
Tue Aug 18 19:32:42 2020 local1.info Keepalived_vrrp[7412]: Registering Kernel netlink command channel
Tue Aug 18 19:32:42 2020 local1.info Keepalived_vrrp[7412]: Opening file '/tmp/keepalived.conf'.
Tue Aug 18 19:32:42 2020 local1.info Keepalived_vrrp[7412]: Unable to load magic database
Tue Aug 18 19:32:42 2020 local1.info Keepalived_vrrp[7412]: Registering gratuitous ARP shared channel
Tue Aug 18 19:32:42 2020 local1.info Keepalived_vrrp[7412]: (VI_1) Entering BACKUP STATE (init)
Tue Aug 18 19:32:45 2020 local1.info Keepalived_vrrp[7412]: (VI_1) Entering MASTER STATE
Tue Aug 18 19:33:41 2020 local1.info Keepalived_vrrp[7412]: (VI_1) Master received advert from 192.168.56.2 with higher priority 200, ours 100
Tue Aug 18 19:33:41 2020 local1.info Keepalived_vrrp[7412]: (VI_1) Entering BACKUP STATE

netstat also can be used for checking if VRRP is listening

root@OWRT-V-01:/etc/keepalived# netstat -na| grep -i 112            
raw        0      0 0.0.0.0:112             0.0.0.0:*               112
raw        0      0 0.0.0.0:112             0.0.0.0:*               112
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