access*=mlock causes "Cannot allocate memory"

[sanikolaev]

If you have an index that does mlock, e.g.

access_plain_attrs=mlock    
access_doclists=mlock    
access_hitlists=mlock    

it takes you an effort to avoid Cannot allocate memory for attributes:

[root@d472fd5d8363 ~]# tail /var/log/manticore/searchd.log    
[Fri Nov 19 04:55:36.544 2021] [456] accepting connections    
[Fri Nov 19 04:55:36.544 2021] [461] prereading 1 indexes    
[Fri Nov 19 04:55:36.546 2021] [461] WARNING: index '/var/lib/manticore/user/user.0': mlock() failed: Cannot allocate memory for attributes    
[Fri Nov 19 04:55:36.602 2021] [461] WARNING: index '/var/lib/manticore/user/user.0': mlock() failed: Cannot allocate memory for dictionary    
[Fri Nov 19 04:55:36.602 2021] [461] WARNING: index '/var/lib/manticore/user/user.0': mlock() failed: Cannot allocate memory for docid-lookup    
[Fri Nov 19 04:55:36.602 2021] [461] WARNING: index '/var/lib/manticore/user/user.0': mlock() failed: Cannot allocate memory for kill-list    
[Fri Nov 19 04:55:36.602 2021] [461] WARNING: index '/var/lib/manticore/user/user.1': mlock() failed: Cannot allocate memory for attributes    
[Fri Nov 19 04:55:36.610 2021] [461] WARNING: index '/var/lib/manticore/user/user.1': mlock() failed: Cannot allocate memory for dictionary    
[Fri Nov 19 04:55:36.610 2021] [461] WARNING: index '/var/lib/manticore/user/user.1': mlock() failed: Cannot allocate memory for docid-lookup    
[Fri Nov 19 04:55:36.611 2021] [461] prereaded 1 indexes in 0.067 sec    

You have to either not use Manticore's systemd file or modify it. To avoid it let's add LimitMEMLOCK=infinity to the default systemd config.

[githubmanticore]

➤ Sergey Nikolaev commented:

fixed by 88740da