Cluster can't startup after reboot all nodes

[urc-ysh]

I have a three nodes PVE cluster, and I never tried to shutdown all servers in this cluster. I changed my IDC service provider, so I have to uproot this Friday and I just executed sudo poweroff on all thress server in 5 mins . After uproot, I tried boot these three servers and access from web, it dosen't work. Then I ssh to my three server to check PVE relate service status. The pve -cluster service status shows below.

ops@pve-180:~$ sudo service pve-cluster status
● pve-cluster.service - The Proxmox VE cluster filesystem
     Loaded: loaded (/lib/systemd/system/pve-cluster.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Sun 2022-09-11 20:51:32 CST; 7min ago
        CPU: 9ms

Sep 11 20:51:32 pve-180 systemd[1]: pve-cluster.service: Scheduled restart job, restart counter is at 5.
Sep 11 20:51:32 pve-180 systemd[1]: Stopped The Proxmox VE cluster filesystem.
Sep 11 20:51:32 pve-180 systemd[1]: pve-cluster.service: Start request repeated too quickly.
Sep 11 20:51:32 pve-180 systemd[1]: pve-cluster.service: Failed with result 'exit-code'.
Sep 11 20:51:32 pve-180 systemd[1]: Failed to start The Proxmox VE cluster filesystem.

And my /etc/hosts file likes below:

127.0.0.1 localhost
127.0.1.1 pve-180

::1             localhost ip6-localhost ip6-loopback
ff02::1         ip6-allnodes
ff02::1         ip6-allrouters

And I found these error logged in /var/log/syslog:

Sep 11 19:40:29 pve-180 pveproxy[23184]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:29 pve-180 pveproxy[23185]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:33 pve-180 ceph-osd[23168]: unable to get monitor info from DNS SRV with service name: ceph-mon
Sep 11 19:40:33 pve-180 ceph-osd[23167]: unable to get monitor info from DNS SRV with service name: ceph-mon
Sep 11 19:40:33 pve-180 ceph-osd[23167]: 2022-09-11T19:40:33.307+0800 7fa30e011f00 -1 failed for service _ceph-mon._tcp
Sep 11 19:40:33 pve-180 ceph-osd[23167]: 2022-09-11T19:40:33.307+0800 7fa30e011f00 -1 monclient: get_monmap_and_config cannot identify monitors to contact
Sep 11 19:40:33 pve-180 ceph-osd[23167]: failed to fetch mon config (--no-mon-config to skip)
Sep 11 19:40:33 pve-180 ceph-osd[23168]: 2022-09-11T19:40:33.307+0800 7fd2477f7f00 -1 failed for service _ceph-mon._tcp
Sep 11 19:40:33 pve-180 ceph-osd[23168]: 2022-09-11T19:40:33.307+0800 7fd2477f7f00 -1 monclient: get_monmap_and_config cannot identify monitors to contact
Sep 11 19:40:33 pve-180 ceph-osd[23168]: failed to fetch mon config (--no-mon-config to skip)
Sep 11 19:40:33 pve-180 systemd[1]: ceph-osd@3.service: Main process exited, code=exited, status=1/FAILURE
Sep 11 19:40:33 pve-180 systemd[1]: ceph-osd@3.service: Failed with result 'exit-code'.
Sep 11 19:40:33 pve-180 systemd[1]: ceph-osd@2.service: Main process exited, code=exited, status=1/FAILURE
Sep 11 19:40:33 pve-180 systemd[1]: ceph-osd@2.service: Failed with result 'exit-code'.
Sep 11 19:40:34 pve-180 pveproxy[23183]: worker exit
Sep 11 19:40:34 pve-180 pveproxy[1968]: worker 23183 finished
Sep 11 19:40:34 pve-180 pveproxy[1968]: starting 1 worker(s)
Sep 11 19:40:34 pve-180 pveproxy[1968]: worker 23192 started
Sep 11 19:40:34 pve-180 pveproxy[23184]: worker exit
Sep 11 19:40:34 pve-180 pveproxy[23192]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:34 pve-180 pveproxy[23185]: worker exit
Sep 11 19:40:34 pve-180 pveproxy[1968]: worker 23184 finished
Sep 11 19:40:34 pve-180 pveproxy[1968]: starting 1 worker(s)
Sep 11 19:40:34 pve-180 pveproxy[1968]: worker 23193 started
Sep 11 19:40:34 pve-180 pveproxy[1968]: worker 23185 finished
Sep 11 19:40:34 pve-180 pveproxy[1968]: starting 1 worker(s)
Sep 11 19:40:34 pve-180 pveproxy[1968]: worker 23194 started
Sep 11 19:40:34 pve-180 pveproxy[23193]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:34 pve-180 pveproxy[23194]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:39 pve-180 pveproxy[23192]: worker exit
Sep 11 19:40:39 pve-180 pveproxy[1968]: worker 23192 finished
Sep 11 19:40:39 pve-180 pveproxy[1968]: starting 1 worker(s)
Sep 11 19:40:39 pve-180 pveproxy[1968]: worker 23195 started
Sep 11 19:40:39 pve-180 pveproxy[23195]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:39 pve-180 pveproxy[23193]: worker exit
Sep 11 19:40:39 pve-180 pveproxy[23194]: worker exit
Sep 11 19:40:39 pve-180 pveproxy[1968]: worker 23193 finished
Sep 11 19:40:39 pve-180 pveproxy[1968]: starting 1 worker(s)
Sep 11 19:40:39 pve-180 pveproxy[1968]: worker 23196 started
Sep 11 19:40:39 pve-180 pveproxy[1968]: worker 23194 finished
Sep 11 19:40:39 pve-180 pveproxy[1968]: starting 1 worker(s)
Sep 11 19:40:39 pve-180 pveproxy[1968]: worker 23197 started
Sep 11 19:40:39 pve-180 pveproxy[23196]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:39 pve-180 pveproxy[23197]: /etc/pve/local/pve-ssl.key: failed to load local private key (key_file or key) at /usr/share/perl5/PVE/APIServer/AnyEvent.pm line 1891.
Sep 11 19:40:43 pve-180 systemd[1]: ceph-osd@3.service: Scheduled restart job, restart counter is at 172.
Sep 11 19:40:43 pve-180 systemd[1]: ceph-osd@2.service: Scheduled restart job, restart counter is at 172.
Sep 11 19:40:43 pve-180 systemd[1]: Stopped Ceph object storage daemon osd.2.
Sep 11 19:40:43 pve-180 systemd[1]: Starting Ceph object storage daemon osd.2...
Sep 11 19:40:43 pve-180 systemd[1]: Stopped Ceph object storage daemon osd.3.
Sep 11 19:40:43 pve-180 systemd[1]: Starting Ceph object storage daemon osd.3...
Sep 11 19:40:43 pve-180 systemd[1]: Started Ceph object storage daemon osd.2.
Sep 11 19:40:43 pve-180 systemd[1]: Started Ceph object storage daemon osd.3.
Sep 11 19:40:43 pve-180 ceph-osd[23208]: did not load config file, using default settings.
Sep 11 19:40:43 pve-180 ceph-osd[23207]: did not load config file, using default settings.
Sep 11 19:40:43 pve-180 ceph-osd[23208]: 2022-09-11T19:40:43.535+0800 7ff50d196f00 -1 Errors while parsing config file!
Sep 11 19:40:43 pve-180 ceph-osd[23207]: 2022-09-11T19:40:43.535+0800 7f3a85143f00 -1 Errors while parsing config file!
Sep 11 19:40:43 pve-180 ceph-osd[23207]: 2022-09-11T19:40:43.535+0800 7f3a85143f00 -1 can't open ceph.conf: (2) No such file or directory
Sep 11 19:40:43 pve-180 ceph-osd[23208]: 2022-09-11T19:40:43.535+0800 7ff50d196f00 -1 can't open ceph.conf: (2) No such file or directory
Sep 11 19:40:44 pve-180 pveproxy[23195]: worker exit
Sep 11 19:40:44 pve-180 pveproxy[1968]: worker 23195 finished

 

[urc-ysh]

All of three server's config and error info looks similar.
Can anyone give me some advice? Thankyou!