[root@osd0 ceph]# podman ps
CONTAINER ID  IMAGE                                COMMAND               CREATED         STATUS             PORTS  NAMES
600ac8379e50  quay.io/ceph-ci/ceph:master          /usr/bin/rbd-targ...  11 minutes ago  Up 11 minutes ago         ceph-b1ac6b1c-419e-4762-a56a-9c2bcbfe7253-iscsi.test.osd0.kvrpub
5605fc6513ac  docker.io/prom/alertmanager:latest   /bin/alertmanager...  49 minutes ago  Up 49 minutes ago         ceph-b1ac6b1c-419e-4762-a56a-9c2bcbfe7253-alertmanager.osd0
e99b4f608d14  docker.io/prom/prometheus:latest     /bin/prometheus -...  49 minutes ago  Up 49 minutes ago         ceph-b1ac6b1c-419e-4762-a56a-9c2bcbfe7253-prometheus.osd0
62835b7b732b  docker.io/prom/node-exporter:latest  /bin/node_exporte...  50 minutes ago  Up 50 minutes ago         ceph-b1ac6b1c-419e-4762-a56a-9c2bcbfe7253-node-exporter.osd0
[root@osd0 ceph]# podman  images
REPOSITORY                     TAG      IMAGE ID       CREATED         SIZE
quay.io/ceph-ci/ceph           master   4ebb2bab1499   5 hours ago     1.12 GB
docker.io/prom/prometheus      latest   de242295e225   6 days ago      141 MB
docker.io/prom/alertmanager    latest   0881eb8f169f   5 months ago    53.5 MB
docker.io/prom/node-exporter   latest   e5a616e4b9cf   11 months ago   24.3 MB

[root@osd0 ceph]# podman exec -it 600ac8379e50 /bin/bash
[root@osd0 /]# cd /var/log/rbd-target-api/
[root@osd0 rbd-target-api]# tail rbd-target-api.log 
2020-05-14 04:51:59,293    DEBUG [common.py:139:_open_ioctx()] - (_open_ioctx) Opening connection to rbd pool
2020-05-14 04:51:59,295    DEBUG [common.py:146:_open_ioctx()] - (_open_ioctx) connection opened
2020-05-14 04:51:59,306    DEBUG [common.py:436:init_config()] - (init_config) using pre existing config object
2020-05-14 04:51:59,306    DEBUG [common.py:139:_open_ioctx()] - (_open_ioctx) Opening connection to rbd pool
2020-05-14 04:51:59,306    DEBUG [common.py:146:_open_ioctx()] - (_open_ioctx) connection opened
2020-05-14 04:51:59,307    DEBUG [common.py:118:_read_config_object()] - _read_config_object reading the config object
2020-05-14 04:51:59,309    DEBUG [common.py:168:_get_ceph_config()] - (_get_rbd_config) config object contains 'b'{\n    "created": "2020/05/14 04:23:48",\n    "discovery_auth": {\n        "mutual_password": "",\n        "mutual_password_encryption_enabled": false,\n        "mutual_username": "",\n        "password": "",\n        "password_encryption_enabled": false,\n        "username": ""\n    },\n    "disks": {},\n    "epoch": 0,\n    "gateways": {},\n    "targets": {},\n    "updated": "",\n    "version": 11\n}''
2020-05-14 04:51:59,314 CRITICAL [target.py:359:create_target()] - Unable to create the Target definition - Could not load module: iscsi_target_mod
2020-05-14 04:51:59,315    ERROR [rbd-target-api:303:target()] - Failure during gateway 'init' processing
2020-05-14 04:51:59,315     INFO [_internal.py:87:_log()] - ::ffff:192.168.121.1 - - [14/May/2020 04:51:59] "PUT /api/target/iqn.2001-07.com.ceph:1589431909134 HTTP/1.1" 500 -
[root@osd0 rbd-target-api]# modprobe iscsi_target_mod
modprobe: FATAL: Module iscsi_target_mod not found in directory /lib/modules/3.10.0-957.12.2.el7.x86_64
[root@osd0 rbd-target-api]# ls /lib/modules/3.10.0-957.12.2.el7.x86_64
ls: cannot access '/lib/modules/3.10.0-957.12.2.el7.x86_64': No such file or directory
[root@osd0 rbd-target-api]# exit
exit
Error: exit status 2
[root@osd0 ceph]# ls /lib/modules/3.10.0-957.12.2.el7.x86_64
build  kernel         modules.alias.bin  modules.builtin      modules.dep      modules.devname  modules.modesetting  modules.order    modules.symbols      source   vdso
extra  modules.alias  modules.block      modules.builtin.bin  modules.dep.bin  modules.drm      modules.networking   modules.softdep  modules.symbols.bin  updates  weak-updates
[root@osd0 ceph]#