scylla_image_setup does not create var-lib-systemd-coredump.mount

[GeoffMontee]

I launched a test instance on AWS EC2 using an RHEL 9 AMI. I setup the Scylla Enterprise 2024.2 repository and installed the scylla-enterprise and scylla-enterprise-machine-image packages. Then I tried running scylla_image_setup, but it failed, because var-lib-systemd-coredump.mount did not exist.

Steps to reproduce

1. Launch an AWS EC2 instance with the following parameters:

• Region: us-east-1
• Instance type: i4i.large
• AMI: RHEL-9.5.0_HVM-20250313-x86_64-0-Hourly2-GP3 (ami-0c15e602d3d6c6c4a)

2. SSH into the instance:

ssh -i <user_key> ec2-user@<instance_ip>

3. Install dependencies:

sudo yum install wget

4. Setup the Scylla Enterprise 2024.2 repository:

sudo curl -L --output /etc/yum.repos.d/scylla.repo https://downloads.scylladb.com/rpm/centos/scylla-2024.2.repo

5. Install packages:

sudo yum install scylla-enterprise scylla-enterprise-machine-image

6. Run scylla_image_setup:

sudo /opt/scylladb/scylla-machine-image/scylla_image_setup

Actual results

If var-lib-systemd-coredump.mount does not exist, the setup fails:

[ec2-user@ip-172-31-34-161 ~]$ sudo /opt/scylladb/scylla-machine-image/scylla_image_setup
2025-03-26 17:35:31,073 - [scylla_configure] - INFO - Going to create scylla.yaml...
Going to create scylla.yaml...
2025-03-26 17:35:31,074 - [user_data] - INFO - Got user-data:
Got user-data:
2025-03-26 17:35:31,074 - [scylla_configure] - INFO - Setting default cluster_name=scylladb-cluster-1743010531
Setting default cluster_name=scylladb-cluster-1743010531
2025-03-26 17:35:31,093 - [scylla_configure] - INFO - Setting default auto_bootstrap=True
Setting default auto_bootstrap=True
2025-03-26 17:35:31,093 - [scylla_configure] - INFO - Setting default listen_address=172.31.34.161
Setting default listen_address=172.31.34.161
2025-03-26 17:35:31,093 - [scylla_configure] - INFO - Setting default broadcast_rpc_address=172.31.34.161
Setting default broadcast_rpc_address=172.31.34.161
2025-03-26 17:35:31,093 - [scylla_configure] - INFO - Setting default rpc_address=0.0.0.0
Setting default rpc_address=0.0.0.0
2025-03-26 17:35:31,093 - [scylla_configure] - INFO - Setting default seed_provider=[{'class_name': 'org.apache.cassandra.locator.SimpleSeedProvider', 'parameters': [{'seeds': '172.31.34.161'}]}]
Setting default seed_provider=[{'class_name': 'org.apache.cassandra.locator.SimpleSeedProvider', 'parameters': [{'seeds': '172.31.34.161'}]}]
2025-03-26 17:35:31,093 - [scylla_configure] - INFO - Setting default endpoint_snitch=Ec2Snitch
Setting default endpoint_snitch=Ec2Snitch
2025-03-26 17:35:31,093 - [scylla_configure] - INFO - Saving /etc/scylla/scylla.yaml
Saving /etc/scylla/scylla.yaml
2025-03-26 17:35:31,095 - [scylla_configure] - INFO - Create scylla data devices as auto
Create scylla data devices as auto
Devices: ['/dev/nvme0n1']
Creating XFS volume for scylla using 1 disk(s): /dev/nvme0n1
meta-data=/dev/nvme0n1           isize=512    agcount=4, agsize=114257813 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=0    bigtime=1 inobtcount=1 nrext64=0
data     =                       bsize=1024   blocks=457031250, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=1024   blocks=223159, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
Created symlink /etc/systemd/system/local-fs.target.wants/var-lib-scylla.mount → /etc/systemd/system/var-lib-scylla.mount.
Relabeled /var/lib/scylla from system_u:object_r:unlabeled_t:s0 to system_u:object_r:var_lib_t:s0
Relabeled /var/lib/scylla/coredump from unconfined_u:object_r:unlabeled_t:s0 to system_u:object_r:systemd_coredump_var_lib_t:s0
Relabeled /var/lib/scylla/data from unconfined_u:object_r:unlabeled_t:s0 to system_u:object_r:var_lib_t:s0
Relabeled /var/lib/scylla/commitlog from unconfined_u:object_r:unlabeled_t:s0 to system_u:object_r:var_lib_t:s0
Relabeled /var/lib/scylla/hints from unconfined_u:object_r:unlabeled_t:s0 to system_u:object_r:var_lib_t:s0
Relabeled /var/lib/scylla/view_hints from unconfined_u:object_r:unlabeled_t:s0 to system_u:object_r:var_lib_t:s0
Relabeled /var/lib/scylla/saved_caches from unconfined_u:object_r:unlabeled_t:s0 to system_u:object_r:var_lib_t:s0
/var/lib/scylla/schema_commitlog doesn't exist - skipping
Failed to enable unit: Unit file var-lib-systemd-coredump.mount does not exist.
Traceback (most recent call last):
  File "/opt/scylladb/scylla-machine-image/libexec/scylla_image_setup", line 43, in <module>
    run('systemctl enable var-lib-systemd-coredump.mount', shell=True, check=True)
  File "/opt/scylladb/python3/lib64/python3.11/subprocess.py", line 571, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command 'systemctl enable var-lib-systemd-coredump.mount' returned non-zero exit status 1.
Debug log created: /var/tmp/scylla/scylla_image_setup-15416-debug.log

Here are the contents of /var/tmp/scylla/scylla_image_setup-15416-debug.log:

Traceback with variables (most recent call last):
      File "/opt/scylladb/scylla-machine-image/libexec/scylla_image_setup", line 43, in <module>
        run('systemctl enable var-lib-systemd-coredump.mount', shell=True, check=True)
          __name__ = '__main__'
          __doc__ = None
          __package__ = None
          __loader__ = _frozen_importlib_external.SourceFileLoader(name='__main__', path='/opt/scylladb/scylla-machine-image/libexec/scylla_image_setup')
          __spec__ = None
          __annotations__ = {}
          __builtins__ = <module 'builtins' (built-in)>
          __file__ = '/opt/scylladb/scylla-machine-image/libexec/scylla_image_setup'
          __cached__ = None
          os = <module 'os' (frozen)>
          sys = <module 'sys' (built-in)>
          Path = pathlib.Path
          get_cloud_instance = <function get_cloud_instance at 0x7f03dd5928e0>
          is_gce = <function is_gce at 0x7f03dd5927a0>
          is_azure = <function is_azure at 0x7f03dd592840>
          is_redhat_variant = <function is_redhat_variant at 0x7f03dd592a20>
          run = <function run at 0x7f03dd8d5760>
          swap_directory = /
          swap_unit = /etc/systemd/system/swapfile.swap
          swapfile = /swapfile
          machine_image_configured = /etc/scylla/machine_image_configured
          cloud_instance = lib.scylla_cloud.aws_instance()
      File "/opt/scylladb/python3/lib64/python3.11/subprocess.py", line 571, in run
        raise CalledProcessError(retcode, process.args,
          input = None
          capture_output = False
          timeout = None
          check = True
          popenargs = ('systemctl enable var-lib-systemd-coredump.mount')
          kwargs = {'shell': True}
          process = <Popen: returncode: 1 args: 'systemctl enable var-lib-systemd-coredump.mount'>
          stdout = None
          stderr = None
          retcode = 1
    subprocess.CalledProcessError: Command 'systemctl enable var-lib-systemd-coredump.mount' returned non-zero exit status 1

Expected results

If var-lib-systemd-coredump.mount does not exist, then maybe the setup script should create it instead of failing.