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Centos 7 - Can't ping or ssh
Posted: 2018/04/19 14:53:45
by kironet
Hi,
today at 3AM(CEST) my VPS went down(problem on OVH's side), they moved my VPS to another host or something. Problem is, that after server went down a can no longer access(ssh or ping) my server(only in rescue mode). They are saying that if server is accessible in rescue mode, it's problem in OS configuration.
Since I can't even ping the server, problem must be in networking? I compared rescue mode resolv.conf and hosts with normal mode and they are the same -_-
Can somebody help me to solve this?
Thanks
Re: Centos 7 - Can't ping or ssh
Posted: 2018/04/19 15:33:54
by tunk
It could be that the NIC got a new MAC address, and that you have to update the network script in /etc/sysconfig/network-scripts/
Run ifconfig and compare to the script.
Re: Centos 7 - Can't ping or ssh
Posted: 2018/04/19 15:43:14
by kironet
Hi, thanks for the reply.
Which script do you mean?
Here is ipconfig in rescue mode:
Code: Select all
root@rescue-pro:~# ifconfig
eth0 Link encap:Ethernet HWaddr fa:16:3e:81:81:1b
inet addr:54.**.**.1 Bcast:54.**.**.**1 Mask:255.255.255.255
inet6 addr: fe80::.../64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18163 errors:0 dropped:0 overruns:0 frame:0
TX packets:12325 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:42287385 (40.3 MiB) TX bytes:1418759 (1.3 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:50 errors:0 dropped:0 overruns:0 frame:0
TX packets:50 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:9908 (9.6 KiB) TX bytes:9908 (9.6 KiB)
Here is output of ifcfg-eth0
Code: Select all
BOOTPROTO=dhcp
DEVICE=eth0
HWADDR=fa:16:3e:81:81:1b
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
ZONE=
Here is output of ifcfg-eth0:1
Code: Select all
DEVICE="eth0:1"
IPADDR="54.**.**.**9"
NETMASK="255.255.255.255"
ONBOOT=yes
Re: Centos 7 - Can't ping or ssh
Posted: 2018/04/19 15:50:02
by TrevorH
Unless you're in rescue mode right at the moment, your server is responding to ssh already.
Re: Centos 7 - Can't ping or ssh
Posted: 2018/04/19 15:51:54
by kironet
Yes, my server is not responding to ssh in normal mode.
I can't even ping to that server in normal mode.
I can do whatever I want in rescue, but when I switch to normal, server is dead.
Re: Centos 7 - Can't ping or ssh
Posted: 2018/04/19 15:52:37
by TrevorH
It is responding right now.
Re: Centos 7 - Can't ping or ssh
Posted: 2018/04/19 15:54:46
by kironet
Check it right now, I switched to normal mode.
Hope I didn't confuse you.
When I'm in rescue mode I can: ssh, ping
When I'm in normal mode I can: nothing(can't ssh, can't ping)
Re: Centos 7 - Can't ping or ssh
Posted: 2018/04/19 16:12:52
by TrevorH
Do you have console access to it? Is it booting at all?