Archive for September, 2020

CentOS 7: bind to privileged port without root access

Tuesday, September 22nd, 2020

The error I faced:

ERROR:core:tcp_init_listener: bind(32, 0x7f72fe4879ac, 16) on 11.22.33.44:443 : Permission denied
ERROR:core:trans_init_all_listeners: failed to init listener [11.22.33.44], proto wss
ERROR:core:main: failed to init all SIP listeners, aborting

The service could not start neither manually (opensips -f /path/to/cfg) nor via SystemD. The checking (opensips -C -f /path/to/cfg) of config file showed no errors.

Use ‘setcap’ command.

Example for OpenSIPS running as opensips:opensips.

How I fixed:

setcap CAP_NET_BIND_SERVICE=+eip /usr/sbin/opensips

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OpenSIPS 2.4: DB/script clusterer configuration

Monday, September 7th, 2020

No DB, node 1:

modparam("clusterer", "current_id", 1)
modparam("clusterer", "db_mode", 0)
modparam("clusterer", "seed_fallback_interval", 10) # Only relevant for seed node
modparam("clusterer", "current_info","cluster_id=1,url=bin:10.145.213.63:5555,flags=seed")
modparam("clusterer", "neighbor_info","cluster_id=1,node_id=2,url=bin:10.145.213.155:5555")

No DB, node 2:

modparam("clusterer", "current_id", 2)
modparam("clusterer", "db_mode", 0)
modparam("clusterer", "seed_fallback_interval", 10) # Only relevant for seed node
modparam("clusterer", "current_info", "cluster_id=1,url=bin:10.145.213.155:5555")
modparam("clusterer", "neighbor_info", "cluster_id=1,node_id=1,url=bin:10.145.213.63:5555")

DB configuration, node 1:

modparam("clusterer", "current_id", 1)
modparam("clusterer", "db_mode", 1)
modparam("clusterer", "db_url", "mysql://opensips:MeGaPaSs@10.145.213.200/opensips")

DB configuration, node 2:

modparam("clusterer", "current_id", 2)
modparam("clusterer", "db_mode", 1)
modparam("clusterer", "db_url", "mysql://opensips:MeGaPaSs@10.145.213.200/opensips")

Clusterer table:

MariaDB [dbsrv]> select * from clusterer\G
*************************** 1. row ***************************
             id: 1
     cluster_id: 1
        node_id: 1
            url: bin:10.145.213.63:5555
          state: 1
no_ping_retries: 3
       priority: 50
       sip_addr: 
          flags: seed
    description: USRLOC_Cluster_node_1
*************************** 2. row ***************************
             id: 2
     cluster_id: 1
        node_id: 2
            url: bin:10.145.213.155:5555
          state: 1
no_ping_retries: 3
       priority: 50
       sip_addr: 
          flags: 
    description: USRLOC_Cluster_node_2

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