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Load Balancing

5 minutes to read Wolf Noble   Ceph Howto Linux Proxmox Tips   Ceph Howto Linux Proxmox Tips

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Ceph Configuration
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Testing

Enabling the Ceph Rados Gateway

Setup

Secrets

radosgw Keyring 
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ceph-authtool --create-keyring /etc/pve/priv/ceph.client.radosgw.keyring
On each node

ln -s /etc/pve/priv/ceph.client.admin.keyring /etc/ceph/ceph.client.admin.keyring ln -s /etc/pve/priv/ceph.client.radosgw.keyring /etc/ceph/ceph.client.radosgw.keyring

Node keys

ceph-authtool /etc/pve/priv/ceph.client.radosgw.keyring -n client.radosgw.px-m-40 –gen-key ceph-authtool /etc/pve/priv/ceph.client.radosgw.keyring -n client.radosgw.px-m-41 –gen-key ceph-authtool /etc/pve/priv/ceph.client.radosgw.keyring -n client.radosgw.px-m-42 –gen-key ceph-authtool /etc/pve/priv/ceph.client.radosgw.keyring -n client.radosgw.px-m-43 –gen-key ceph-authtool /etc/pve/priv/ceph.client.radosgw.keyring -n client.radosgw.px-m-44 –gen-key ceph-authtool /etc/pve/priv/ceph.client.radosgw.keyring -n client.radosgw.px-m-45 –gen-key

Privileges
create the privilege tokens

ceph-authtool -n client.radosgw.px-m-40 –cap osd ‘allow rwx’ –cap mon ‘allow rwx’ /etc/pve/priv/ceph.client.radosgw.keyring ceph-authtool -n client.radosgw.px-m-41 –cap osd ‘allow rwx’ –cap mon ‘allow rwx’ /etc/pve/priv/ceph.client.radosgw.keyring ceph-authtool -n client.radosgw.px-m-42 –cap osd ‘allow rwx’ –cap mon ‘allow rwx’ /etc/pve/priv/ceph.client.radosgw.keyring ceph-authtool -n client.radosgw.px-m-43 –cap osd ‘allow rwx’ –cap mon ‘allow rwx’ /etc/pve/priv/ceph.client.radosgw.keyring ceph-authtool -n client.radosgw.px-m-44 –cap osd ‘allow rwx’ –cap mon ‘allow rwx’ /etc/pve/priv/ceph.client.radosgw.keyring ceph-authtool -n client.radosgw.px-m-45 –cap osd ‘allow rwx’ –cap mon ‘allow rwx’ /etc/pve/priv/ceph.client.radosgw.keyring

Add the newly minted auth tokens to the cluster

Using the admin keyring, add the newly minted tokens to the cluster.

ceph -k /etc/pve/priv/ceph.client.admin.keyring auth add client.radosgw.px-m-40 -i /etc/pve/priv/ceph.client.radosgw.keyring ceph -k /etc/pve/priv/ceph.client.admin.keyring auth add client.radosgw.px-m-41 -i /etc/pve/priv/ceph.client.radosgw.keyring ceph -k /etc/pve/priv/ceph.client.admin.keyring auth add client.radosgw.px-m-42 -i /etc/pve/priv/ceph.client.radosgw.keyring ceph -k /etc/pve/priv/ceph.client.admin.keyring auth add client.radosgw.px-m-43 -i /etc/pve/priv/ceph.client.radosgw.keyring ceph -k /etc/pve/priv/ceph.client.admin.keyring auth add client.radosgw.px-m-44 -i /etc/pve/priv/ceph.client.radosgw.keyring ceph -k /etc/pve/priv/ceph.client.admin.keyring auth add client.radosgw.px-m-45 -i /etc/pve/priv/ceph.client.radosgw.keyring

added key for client.radosgw.px-m-40 added key for client.radosgw.px-m-41 added key for client.radosgw.px-m-42 added key for client.radosgw.px-m-43 added key for client.radosgw.px-m-44 added key for client.radosgw.px-m-45

Config

Update /etc/services 

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radosgw         7480/tcp                        # Ceph Rados gw

Increase Systemic Limits

Adjust ceph config file 

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[client.radosgw.px-m-40]
        host = px-m-40
        keyring = /etc/pve/priv/ceph.client.radosgw.keyring
        log file = /var/log/ceph/client.radosgw.$host.log
        rgw_dns_name = dog.wolfspyre.io

[client.radosgw.px-m-41]
        host = px-m-41
        keyring = /etc/pve/priv/ceph.client.radosgw.keyring
        log file = /var/log/ceph/client.radosgw.$host.log
        rgw_dns_name = dog.wolfspyre.io

[client.radosgw.px-m-42]
        host = px-m-42
        keyring = /etc/pve/priv/ceph.client.radosgw.keyring
        log file = /var/log/ceph/client.radosgw.$host.log
        rgw_dns_name = dog.wolfspyre.io

[client.radosgw.px-m-43]
        host = px-m-43
        keyring = /etc/pve/priv/ceph.client.radosgw.keyring
        log file = /var/log/ceph/client.radosgw.$host.log
        rgw_dns_name = dog.wolfspyre.io

[client.radosgw.px-m-44]
        host = px-m-44
        keyring = /etc/pve/priv/ceph.client.radosgw.keyring
        log file = /var/log/ceph/client.radosgw.$host.log
        rgw_dns_name = dog.wolfspyre.io

[client.radosgw.px-m-45]
        host = px-m-45
        keyring = /etc/pve/priv/ceph.client.radosgw.keyring
        log file = /var/log/ceph/client.radosgw.$host.log
        rgw_dns_name = dog.wolfspyre.io
        rgw_zone     = 

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rgw_dns_name = dog.wolfspyre.io
rgw_log_nonexistent_bucket = true
rgw_enable_ops_log = true
rgw_enable_usage_log = true
osd_map_message_max=10
objecter_inflight_ops = 24576
rgw_thread_pool_size = 512
rgw_admin_entry
rgw_zone
rgw_zone_id
rgw_zone_root_pool
rgw_default_zone_info_oid
rgw_region
rgw_region_root_pool
rgw_default_region_info_oid
rgw_zonegroup
rgw_zonegroup_id
rgw_zonegroup_root_pool
rgw_default_zonegroup_info_oid
rgw_realm
rgw_realm_id
rgw_realm_id_oid

https://docs.ceph.com/en/latest/radosgw/config-ref/#confval-rgw_relaxed_s3_bucket_names

Installation and Service Enablement

Package Installation

apt-get install radosgw librados2-perl python3-rados librados2 librgw2

Service enablement

systemctl enable radosgw
service radosgw start

Actually connecting

Setting up the external gateway

DNS Records

wildcard and A records

I chose dog.wolfspyre.io as the root subdomain. Since I want to facilitate my offsite hosts to be able to access this as well, I need to enable external and internal resolution of the endpoints.

external records 
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# wolfspyre.io
dog IN A 108.221.46.29
*.dog IN A 108.221.46.29
internal records 
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# wolfspyre.io
dog IN NS ns01.wolfspyre.io.
dog IN NS ns02.wolfspyre.io.
dog IN NS ns03.wolfspyre.io.

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# dog.wolfspyre.io
@            IN A 198.18.1.33
*            IN A 198.18.1.33

skwirreltrap IN A 198.18.198.1
atticus      IN A 198.18.198.2
evey         IN A 198.18.198.3

px-m-40      IN A 198.18.198.40
px-m-41      IN A 198.18.198.41
px-m-42      IN A 198.18.198.42
px-m-43      IN A 198.18.198.43
px-m-44      IN A 198.18.198.44
px-m-45      IN A 198.18.198.45

firewall adjustment

  • I needed to permit traffic from internal hosts to the VIP on tcp:443
  • I needed to permit traffic from the firewalls to the proxmox nodes on TCP:7480

OPNsense Haproxy config

Real Servers (Backends)

Main info
  • Name or Prefix
    px-m-40-7080
  • Description
    px-m-40-rados
  • Type
    static
Static Server
  • FQDN or IP
    px-m-40.dog.wolfspyre.io
  • Port
    7480
  • Mode
    active [default]
  • Multiplexer Protocol
    auto-selection [recommended]
  • Prefer IP Family
    prefer IPv4
Common Options
  • SSL
    [ ]
  • SSL SNI
    px-m-40.dog.wolfspyre.io
  • Verify SSL Certificate
    [ ]
  • SSL Verify CA
    Nothing Selected
  • SSL Verify CRL
    None
  • SSL Client Certificate
    None
  • Max Connections
    N/A
  • Weight
    N/A
  • Check Interval
    N/A
  • Down Interval
    N/A
  • Port to check
    N/A
  • Source address
    198.18.198.1
  • Option pass-through
    N/A

Backend Pools

  • advanced mode
    [ x ]
  • Enabled
    [ x ]
  • Name
    PXMCeph-S3-Pool
  • Description
    Proxmox Ceph S3 Backend Pool
  • Mode
    HTTP (Layer 7) [default]
  • Balancing Algorithm
    Source-IP Hash [default]
  • Random Draws
    2
  • Proxy Protocol
    none
  • Servers
    • pxm-40-8006
    • pxm-41-8006
    • pxm-42-8006
    • pxm-43-8006
    • pxm-44-8006
    • pxm-45-8006
  • FastCGI Application
    none
  • Resolver
    none
  • Resolver Options
    none
  • Prefer IP Family
    prefer IPv4
  • Source address
    198.19.198.1
  • Enable Health Checking
    [x]
Health Checking
  • Health Monitor
    PXM UI Port 8006 Check
  • Log Status Changes
    a
  • Check Interval
    a
  • Down Interval
    a
  • Unhealthy Threshold
    a
  • Healthy Threshold
    a
  • E-Mail Alert
    none
HTTP(S) settings
  • Enable HTTP/2
    [ ]
  • HTTP/2 without TLS
    [ ]
  • Advertise Protocols (ALPN)
    • HTTP/1.1
    • HTTP/1.0
Persistence
  • Persistence type
    Stick-table persistence [default]
Stick-table persistence
  • Table type
    none
  • Stored data types
    Connection count
  • Expiration time
    30m
  • Size
    50k
  • Cookie name
    none
  • Cookie length
    none
  • Connection rate period
    60s
  • Session rate period
    60s
  • HTTP request rate period
    60s
  • HTTP error rate period
    60s
  • Bytes in rate period
    60s
  • Bytes out rate period
    60s
Basic Authentication
  • Enable
    [ ]
  • Allowed Users
    Nothing selected
  • Allowed Groups
    Nothing selected
Tuning Options
  • Connection Timeout
    20s
  • Check Timeout
    10s
  • Server Timeout
    20s
  • Retries
    1
  • Option pass-through
    none
  • Default for server
    none
  • Use Frontend port
    [ ]
  • HTTP reuse
    Always
  • Enable Caching
    [ X ]
Rules
  • Select Rules
    noneyet
Error Messages
  • Select Error Messages
    Nothing selected

Condition

COND:HostEndsWith-dog_wolfspyre_io COND:HostMatches-dog_wolfspyre_io

Rules

RUL-AllowHTTPReq-EndsWith-dog_wolfspyre_io

Health Check

readiness check on TCP:7480

Backend Pool

Ceph-S3-VIP-Pool

Frontend Pools

Internal pool

External pool

Testing

Maintenance

4: Ceph Configuration
3: Enabling RADOS
2: PreRequisites
1: Reasoning
Load Balancing
6: Testing
7: Maintenance and Monitoring
8: Reading and References
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label

https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/1.3/html/object_gateway_guide_for_red_hat_enterprise_linux/object_gateway_configuration_reference

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/load_balancer_administration/ceph_example