Starting Stunnel with configuration:
pid = /usr/local/var/run/stunnel.pid
foreground = yes
debug = notice
[zookeeper-2181]
client = yes
CAfile = /tmp/cluster-ca.crt
cert = /etc/tls-sidecar/kafka-brokers/my-cluster-source-kafka-0.crt
key = /etc/tls-sidecar/kafka-brokers/my-cluster-source-kafka-0.key
accept = 127.0.0.1:2181
connect = my-cluster-source-zookeeper-client:2181
delay = yes
verify = 2
2020.04.15 00:24:40 LOG5[1:140369135630400]: stunnel 4.56 on x86_64-redhat-linux-gnu platform
2020.04.15 00:24:40 LOG5[1:140369135630400]: Compiled/running with OpenSSL 1.0.1e-fips 11 Feb 2013
2020.04.15 00:24:40 LOG5[1:140369135630400]: Threading:PTHREAD Sockets:POLL,IPv6 SSL:ENGINE,OCSP,FIPS Auth:LIBWRAP
2020.04.15 00:24:40 LOG5[1:140369135630400]: Reading configuration from file /tmp/stunnel.conf
2020.04.15 00:24:40 LOG5[1:140369135630400]: FIPS mode is enabled
2020.04.15 00:24:40 LOG5[1:140369135630400]: Configuration successful
2020.04.15 00:24:44 LOG5[1:140369135625984]: Service [zookeeper-2181] accepted connection from 127.0.0.1:35740
2020.04.15 00:24:44 LOG5[1:140369135625984]: connect_blocking: connected 172.30.27.52:2181
2020.04.15 00:24:44 LOG5[1:140369135625984]: Service [zookeeper-2181] connected remote server from 172.17.0.13:36226
2020.04.15 00:24:44 LOG5[1:140369135625984]: Certificate accepted: depth=1, /O=io.strimzi/CN=cluster-ca v0
2020.04.15 00:24:44 LOG5[1:140369135625984]: Certificate accepted: depth=0, /O=io.strimzi/CN=my-cluster-source-zookeeper