在 2020年5月9日星期六 UTC+8 上午6:35:43，<Greg Hudson> 写道：

On 5/8/20 3:18 PM, Leonard J. Peirce wrote:

I am testing the upgrade from 1.14 to 1.18.1. I copy the database directory over and attempt to start krb5kdc and kadmind but both
fail. Syslog shows for krb5kdc

Cannot allocate memory - while creating main loop

"while creating main loop" is a hint here, but unfortunately "Cannot allocate memory" probably doesn't speak to the true cause. If there any other KDC or kadmind log messages preceding that one, they may help.
Since you built the sources yourself, you could try debugging through startup using gdb, particularly looking into loop_setup_network().
strace is another option for collecting more information.

There were significant changes to KDC and kadmind network configuration
in 1.15. I haven't seen a report like this before, but it's possible
that the changes interact badly with your specific configuration.

****************************************************************************************
We are also show “Cannot allocate memory - while creating main loop”
Any one can give me some ideas ? ================================================================
[root@namenode ~]# cat /var/log/krb5kdc.log
krb5kdc: Cannot allocate memory - while creating main loop
krb5kdc: Cannot allocate memory - while creating main loop
krb5kdc: Cannot find master key record in database - while fetching master keys list for realm HDFS.COM
krb5kdc: Cannot find master key record in database - while fetching master keys list for realm HDFS.COM
krb5kdc: Cannot find master key record in database - while fetching master keys list for realm HDFS.COM
krb5kdc: Cannot allocate memory - while creating main loop
krb5kdc: Cannot allocate memory - while creating main loop
[root@namenode ~]# cat /var/log/kadmind.log
Dec 31 11:52:49 namenode kadmind[74351](Error): Cannot allocate memory while initializing network, aborting

Dec 31 13:55:25 namenode kdb5_util[75059](info): No dictionary file specified, continuing without one.
Dec 31 14:22:36 namenode kadmind[75489](Error): Cannot allocate memory while initializing network, aborting

[root@namenode ~]# c
-bash: c: command not found
[root@namenode ~]# ll /var/kerberos/krb5
krb5/ krb5kdc/
[root@namenode ~]# ll /var/kerberos/krb5kdc/
total 24
-rw------- 1 root root 18 Dec 31 14:14 kadm5.acl
-rw------- 1 root root 431 Dec 30 19:08 kdc.conf
-rw------- 1 root root 8192 Dec 31 14:20 principal
-rw------- 1 root root 8192 Dec 31 14:15 principal.kadm5
-rw------- 1 root root 0 Dec 31 14:15 principal.kadm5.lock
-rw------- 1 root root 0 Dec 31 14:20 principal.ok
[root@namenode ~]# cat /etc/krb5.conf
[logging]
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log

[libdefaults]
dns_lookup_realm = false
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true
rdns = false
default_realm = HDFS.COM
default_ccache_name = KEYRING:persistent:%{uid}

[realms]
HDFS.COM = {
kdc = namenode
admin_server = namenode
}

[domain_realm]
.hdfs.com = HDFS.COM
hdfs.com = HDFS.COM

[kdc]
profile = /var/kerberos/krb5kdc/kdc.conf

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)