25 Jun
2024
25 Jun
'24
6:35 p.m.
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### Description
Hello, I am using ndb_redis module with TLS and redis-cluster. kamailio connects to the
cluster endpoint when getting data, gets a 'MOVED' response and prints below
error, it does not get data from the new host.
### Troubleshooting
I have verified that I can connect to the cluster endpoint and the host in 'MOVED'
using redis-cli on the system that kamailio is running on. I tried to connect to a self
hosted cluster without TLS, it works as expected. It also works as expected with TLS and a
single redis host.
#### Reproduction
Connect to a redis-cluster over TLS
#### Log Messages
<!--
Check the syslog file and if there are relevant log messages printed by Kamailio, add them
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```
2024-06-25T20:48:53.626708963Z 2024-06-25 20:48:53.626584 3(17) NOTICE: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:437]: redisc_get_server():
Hash 31807 (ra)
2024-06-25T20:48:53.626710053Z 2024-06-25 20:48:53.626600 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:440]: redisc_get_server():
Entry 31807 (ra)
2024-06-25T20:48:53.626711073Z 2024-06-25 20:48:53.626636 3(17) NOTICE: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:444]: redisc_get_server():
Using entry 31807 (ra)
2024-06-25T20:48:53.626712073Z 2024-06-25 20:48:53.626651 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:1030]: redisc_exec():
rsrv->ctxRedis = 0x556b4456dc20
2024-06-25T20:48:53.626713073Z 2024-06-25 20:48:53.626667 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:1036]: redisc_exec():
rsrv->ctxRedis = 0x556b4456dc20
2024-06-25T20:48:53.626810463Z 2024-06-25 20:48:53.626762 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:896]: check_cluster_reply():
Redis replied: "MOVED 3667
testdbredis-masked-hostname.00000000001110000000.130-characters-long.00000000000011111111100000000.availability-zone.amazonaws.com:6379"
2024-06-25T20:48:53.626811523Z 2024-06-25 20:48:53.626777 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:904]: check_cluster_reply():
Port "6379" [4] => 6379
2024-06-25T20:48:53.626816413Z 2024-06-25 20:48:53.626793 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:914]: check_cluster_reply():
Host
"testdbredis-masked-hostname.00000000001110000000.130-characters-long.00000000000011111111100000000.availability-zone.amazonaws.com"
[130]
2024-06-25T20:48:53.626846113Z 2024-06-25 20:48:53.626810 3(17) NOTICE: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:925]: check_cluster_reply():
Name of new connection:
testdbredis-masked-hostname.00000000001110000000.130-characters-long.00000000000011111111100000000.
2024-06-25T20:48:53.626851443Z 2024-06-25 20:48:53.626827 3(17) NOTICE: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:437]: redisc_get_server():
Hash 968070864
(testdbredis-masked-hostname.00000000001110000000.130-characters-long.00000000000011111111100000000.)
2024-06-25T20:48:53.626896173Z 2024-06-25 20:48:53.626844 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:440]: redisc_get_server():
Entry 31807 (ra)
2024-06-25T20:48:53.626897503Z 2024-06-25 20:48:53.626861 3(17) NOTICE: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:450]: redisc_get_server(): No
entry found.
2024-06-25T20:48:53.626955363Z 2024-06-25 20:48:53.626877 3(17) ERROR: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:947]: check_cluster_reply():
failed to print server spec string
2024-06-25T20:48:53.626957263Z 2024-06-25 20:48:53.626893 3(17) DEBUG: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:1115]: redisc_exec():
rpl->rplRedis->type:6
2024-06-25T20:48:53.626958443Z 2024-06-25 20:48:53.626908 3(17) ERROR: {Kam 192.168.20.4
503874790_98536808 1 753067 INVITE}ndb_redis [redis_client.c:1117]: redisc_exec(): Redis
error:MOVED 3667
testdbredis-masked-hostname.00000000001110000000.130-characters-long.00000000000011111111100000000.availability-zone.amazonaws.com:6379
```
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
version: kamailio 5.8.1 (x86_64/linux) 384843
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST,
DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, 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_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_SEND_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: 384843
compiled on 19:05:30 Jun 25 2024 with gcc 12.2.0
```
* Hiredis(v1.2.0) and hiredis-cluster(v0.13.0) are installed from source, both with ssl
support.
* **Operating System**:
<!--
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CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
Kernel details (output of `lsb_release -a` and `uname -a`)
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```
Debian 12
```
### Kamailio config snippet
```
loadmodule "ndb_redis.so"
.
.
# ----- ndb_redis params -----
modparam("ndb_redis", "server",
"name=ra;addr=cluster.testdbredis-masked-hostname.0000000011111111100000.availability-zone.amazonaws.com;port=6379;tls=1")
modparam("ndb_redis", "init_without_redis", 1)
modparam("ndb_redis", "cluster", 1)
modparam("ndb_redis", "allow_dynamic_nodes", 1)
modparam("ndb_redis", "ca_path", "/etc/ssl/certs")
modparam("ndb_redis", "debug", 1)
.
.
redis_cmd("ra", "HMGET usr_preferences:entry::%s:%s blocked",
"$rU", "$fU", "r");
if($redis(r=>value[0]) == 1) {
.
}
```
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