I have a server linux with CentOS Linux release 7.9.2009.

Server has 2 disks with a raid1 software.
Raid1 seems ok, and if i run cat /proc/mdstat this is the output:

Personalities : [raid1] 
md124 : active raid1 sda5[0] sdb5[1]
      1943943232 blocks super 1.2 [2/2] [UU]
      bitmap: 2/15 pages [8KB], 65536KB chunk

md125 : active raid1 sdb4[1] sda4[0]
      4189184 blocks super 1.2 [2/2] [UU]
      
md126 : active raid1 sdb3[1] sda3[0]
      4189184 blocks super 1.2 [2/2] [UU]
      
md127 : active raid1 sdb2[1] sda2[0]
      1048512 blocks [2/2] [UU]
      
unused devices: <none>

Looking at Logwatch report i see this error in mdadm section:

mdadm: cannot open /dev/md2: No such file or directory /dev/md2 : 
mdadm: cannot open /dev/md3: No such file or directory /dev/md3 : 
mdadm: cannot open /dev/md4: No such file or directory /dev/md4 : 
mdadm: cannot open /dev/md5: No such file or directory /dev/md5 : 

So i checked the mdadm.conf file and it seems wrong:

MAILADDR root
ARRAY /dev/md2 level=raid1 num-devices=2 metadata=0.90 UUID=4e9d6540:6dbcd220:cf76e387:6b0e5184
ARRAY /dev/md3 level=raid1 num-devices=2 metadata=1.2 name=10907523:swap UUID=aa3c14ba:b8bcfeeb:1d3b6ca9:e50c9ff9
ARRAY /dev/md4 level=raid1 num-devices=2 metadata=1.2 name=10907523:tmp UUID=30792b3a:fdaa4031:24c14d19:978ef0eb
ARRAY /dev/md5 level=raid1 num-devices=2 metadata=1.2 name=10907523:root UUID=182ced2e:4d796d7f:13af9080:fdef98dd

Scanning raid with mdadm (mdadm –detail –scan) the result is:

ARRAY /dev/md/125_0 metadata=0.90 UUID=4e9d6540:6dbcd220:cf76e387:6b0e5184
ARRAY /dev/md/10907523:swap metadata=1.2 name=10907523:swap UUID=aa3c14ba:b8bcfeeb:1d3b6ca9:e50c9ff9
ARRAY /dev/md/10907523:tmp metadata=1.2 name=10907523:tmp UUID=30792b3a:fdaa4031:24c14d19:978ef0eb
ARRAY /dev/md/10907523:root metadata=1.2 name=10907523:root UUID=182ced2e:4d796d7f:13af9080:fdef98dd

Informations about block devices with lsblk return:

NAME      MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT
sda         8:0    0  1.8T  0 disk  
|-sda1      8:1    0    1M  0 part  
|-sda2      8:2    0    1G  0 part  
| `-md127   9:127  0 1024M  0 raid1 /boot
|-sda3      8:3    0    4G  0 part  
| `-md126   9:126  0    4G  0 raid1 [SWAP]
|-sda4      8:4    0    4G  0 part  
| `-md125   9:125  0    4G  0 raid1 /tmp
`-sda5      8:5    0  1.8T  0 part  
  `-md124   9:124  0  1.8T  0 raid1 /
sdb         8:16   0  1.8T  0 disk  
|-sdb1      8:17   0    1M  0 part  
|-sdb2      8:18   0    1G  0 part  
| `-md127   9:127  0 1024M  0 raid1 /boot
|-sdb3      8:19   0    4G  0 part  
| `-md126   9:126  0    4G  0 raid1 [SWAP]
|-sdb4      8:20   0    4G  0 part  
| `-md125   9:125  0    4G  0 raid1 /tmp
`-sdb5      8:21   0  1.8T  0 part  
  `-md124   9:124  0  1.8T  0 raid1 /

First question, if I reboot the server it start correctly?

Second question, how can I fix the mdadm configuration?