Description

I want start kamailio as root user with carrierroute module.
and get this error message

[root@ip-172-22-6-233 config]# kamailio -DD -E
 0(13687) INFO: <core> [core/sctp_core.c:74]: sctp_core_check_support(): SCTP API not enabled - if you want to use it, load sctp module
Listening on 
             udp: 172.22.6.233:5060
             tcp: 172.22.6.233:5060
Aliases: 
             tcp: ip-172-22-6-233.us-west-1.compute.internal:5060
             udp: ip-172-22-6-233.us-west-1.compute.internal:5060

 0(13687) INFO: <core> [core/tcp_main.c:5042]: init_tcp(): using epoll_lt as the io watch method (auto detected)
 0(13687) INFO: carrierroute [carrierroute.c:197]: mod_init(): use file as configuration source
 0(13687) ERROR: carrierroute [carrierroute.c:219]: mod_init(): config file /etc/kamailio/carrierroute.conf not writable
 0(13687) ERROR: <core> [core/sr_module.c:849]: init_mod(): Error while initializing module carrierroute (/usr/lib64/kamailio/modules/carrierroute.so)
ERROR: error while initializing modules
 0(13687) INFO: <core> [core/sctp_core.c:53]: sctp_core_destroy(): SCTP API not initialized

I checked file permissions

[root@ip-172-22-6-233 config]# ls -l /etc/kamailio/carrierroute.conf
-rw-rw----. 1 kamailio kamailio 403 Jun 23 18:07 /etc/kamailio/carrierroute.conf

Looks as file permissions as expected.

Troubleshooting

Issue related to a difference of process user/group and file user/group.

Reproduction

1. create /etc/kamailio/carrierroute.conf with kamailio user/group;
2. change file permissions to 660;
3. start kamailio as root user

Debugging Data

none

Log Messages

none

SIP Traffic

none

Possible Solutions

Add information about the expected user group permissions, like

config file /etc/kamailio/carrierroute.conf not writable or not owned by "root" user and "root" group

Additional Information

• Kamailio Version - output of kamailio -v

[root@ip-172-22-6-233 config]# kamailio -v
version: kamailio 5.3.4 (x86_64/linux) 117ff9
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 117ff9 
compiled on 15:31:51 May  6 2020 with gcc 8.3.1

• Operating System:

[root@ip-172-22-6-233 config]# cat /etc/os-release 
NAME="CentOS Linux"
VERSION="8 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Linux 8 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-8"
CENTOS_MANTISBT_PROJECT_VERSION="8"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="8"

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