A stemcell is a versioned Operating System image wrapped with IaaS specific packaging.

Typical stemcell contains bare minimum OS skeleton with few common utilities pre-installed, a BOSH Agent and few configuration files to make OS be securely configured by default.

Learn more about stemcells.

Ubuntu Lucid, CentOS 6.x, and Ruby agent based stemcells are deprecated.

Windows instance types will have additional costs associated with Microsoft licensing. Windows stemcell do not include actual Windows OS.

Upload latest version to your BOSH Director:

# Upload latest version, currently 3445.11
$ bosh upload-stemcell https://bosh.io/d/stemcells/bosh-azure-hyperv-centos-7-go_agent

# Upload specific version
$ bosh upload-stemcell https://bosh.io/d/stemcells/bosh-azure-hyperv-centos-7-go_agent?v=3445.11

Alternatively, download stemcell tarball locally:

# ...or download it directly using curl
$ curl -L -J -O https://bosh.io/d/stemcells/bosh-azure-hyperv-centos-7-go_agent?v=3445.11

# or with wget...
$ wget --content-disposition https://bosh.io/d/stemcells/bosh-azure-hyperv-centos-7-go_agent?v=3445.11
  • CentOS 7.x

    • Azure Hyper-V 569 MB
      2017-09-19T21:52:10.000Z 909e1cf262e066faf1fc6e67d9b5348f56350640 [SHA1]
    • Azure Hyper-V 569 MB
      2017-08-31T22:44:58.000Z 39a4a35e4d1ca62e3c7bceb2a8202ebc8ef7e2a4 [SHA1]
      • Logrotate /var/log/wtmp and utmp more aggressively
      • Updated BOSH agent to include aggressive 5 minute timeout on NATS connection failure
      • Set auditd rules to be mutable by default
        • Please use auditd job from os-conf-release to make rules immutable
    • Azure Hyper-V 565 MB
      2017-08-04T21:29:22.000Z 2cc32bc77ea33bec4ad61eb38dc6ab7f0538bd55 [SHA1]
      • Bump version (no change)
    • Azure Hyper-V 565 MB
      2017-07-31T22:05:38.000Z 7de85351aa1947de4b05dbbf45eb8f07a0709d70 [SHA1]
      • Periodic Ubuntu stemcells update
    • Azure Hyper-V 565 MB
      2017-09-19T21:52:10.000Z 928996b9f329b4f4fdde030c7875ee8f1a3b2aed [SHA1]
    • Azure Hyper-V 565 MB
      2017-09-07T23:24:41.000Z 6632b8c4d95e22918dfeebdaf2028f98828ac4fc [SHA1]
    • Azure Hyper-V 565 MB
      2017-08-01T21:05:04.000Z e51824b4455ddbda20d8cefc4f3b0246e86c4ca9 [SHA1]
    • Azure Hyper-V 562 MB
      2017-06-30T00:29:42.000Z 5303bd765894a7a6fcda2244a7ae23112f41e8ca [SHA1]
      • Bump Ubuntu stemcells for USN-3344-2: Linux kernel (Xenial HWE) vulnerabilities
    • Azure Hyper-V 563 MB
      2017-06-21T03:33:00.000Z 21106049f024ff9ef48d0016e9f48f2a2177d9e7 [SHA1]
      • Bump Ubuntu stemcells for USN-3334-1: Linux kernel (Xenial HWE) vulnerabilities
    • Azure Hyper-V 562 MB
      2017-06-12T16:52:35.000Z a267749b26090ea3012948bb59068901cfcd07f4 [SHA1]
      • Bump Ubuntu stemcells for USN-3312-2 - Linux kernel vulnerabilities
    • Azure Hyper-V 562 MB
      2017-06-05T17:37:16.000Z 63261bc06ca063f4c11dd5997d0d27936dbe4df6 [SHA1]
      • Bump CentOS stemcells for CESA-2017:1382 - sudo vulnerability
    • Azure Hyper-V 560 MB
      2017-05-23T00:37:08.000Z 56256efc98ad010574f1cef8cc979d66309775a5 [SHA1]

      New:

      • Added env.bosh.remove_static_libraries (bool) to remove static libraries
        • Useful to enable this option when exporting compiled releases
      • Added env.bosh.ipv6.enable (bool) to remove ipv6.disable kernel functionality at bootup time

      Fixes:

      • Fixed sysstat logging
      • Fixed anacron’s RANDOM_DELAY configuration

      Bumps:

      • Bumped s3cli v0.0.60
        • Updated aws-sdk-go to solve network timeout edge case
      • Bumped davcli v0.0.19
        • Use TCP keep alive to solve network timeout edge case
      • Bumped bosh-agent v0.0.35
        • Add -v to the Agent binary
        • Prepared sync_dns action to work with future Director’s DNS integration
    • Azure Hyper-V 561 MB
      2017-05-30T23:02:41.000Z d4809eef058c383c0544e3f1e2f838f3a8a94e39 [SHA1]
    • Azure Hyper-V 561 MB
      2017-05-19T23:43:42.000Z 0635ff812d24ecb4ab58f9741355a9b5e5226108 [SHA1]
      • Periodic Ubuntu stemcells update
    • Azure Hyper-V 561 MB
      2017-05-12T19:29:41.000Z 43f419dfebac42610e9404912f685baf5114e3cd [SHA1]
      • Periodic Ubuntu stemcells update
      • Run cron in BOSH Lite stemcells so that logrotation is performed
    • Azure Hyper-V 561 MB
      2017-04-25T23:14:34.000Z de4d6cae624ad1f86de1ad7647483731b953b594 [SHA1]
      • Bump Ubuntu stemcells for USN-3265-2: Linux kernel (Xenial HWE) vulnerabilities
    • Azure Hyper-V 561 MB
      2017-04-17T22:49:31.000Z c84fb49cccdcfb7950a4e6be6c0d5e90c48b5663 [SHA1]
      • Periodic bump for CentOS stemcells to include CESA-2017:0933
      • Disable IPv6 through /proc/cmdline to eliminate possibilty of listening on tcp6/udp6
    • Azure Hyper-V 540 MB
      2017-04-05T21:56:49.000Z 0d0c7d83e232d7d53bf34d55d8711891eaee3b49 [SHA1]
      • Bump Ubuntu stemcells for USN-3256-2: Linux kernel (HWE) vulnerability

      Misc:

      • Made AWS AMI backing snapshot public to support encryption of boot disks
    • Azure Hyper-V 540 MB
      2017-03-30T21:29:08.000Z 9d2fa002a66a564abfe041cc010e21fe9706f19f [SHA1]
      • Bump Ubuntu stemcells for USN-3249-2: Linux kernel (Xenial HWE) vulnerability
    • Azure Hyper-V 540 MB
      2017-03-10T00:57:07.000Z 79801c0a3d1a25dbd5d7e5ef964a2dc274ddc50c [SHA1]
    • Azure Hyper-V 538 MB
      2017-03-08T23:51:48.000Z db95503c10f08e0e29cb9d8b51847433415c7a04 [SHA1]
      • Bumps Ubuntu stemcells for USN-3220-2: Linux kernel (Xenial HWE) vulnerability
    • Azure Hyper-V 538 MB
      2017-02-23T02:28:06.000Z 567ad68d9fa584e73f680ee7ce7e41cb7dd05ab9 [SHA1]

      Changes: - Bumps Ubuntu stemcells for USN-3208-2: Linux kernel (Xenial HWE) vulnerabilities - Fixes excessive “out of memory” errors in kernel - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1655842 - Fixes regression to rsyslog by locking it down again to rsyslog 8.22.0

      Agent: - Fixes Azure stemcell persistent disk formatting - Fixes Warden stemcells SSH access

    • Azure Hyper-V 538 MB
      2017-02-17T21:16:24.000Z cca0f8c9b4218c6500a13fb9c7158252c98c982d [SHA1]

      Reported Problems: - DO NOT USE azure stemcell as it may cause data loss. - rsyslog version updated to 8.24.0, regressing on issue #1537 - Out of memory errors still exists in Kernel 4.4.0.62 - will be fixed around Feb 20.

      Changes: - Fixes double -hvm- suffix problem for AWS Light stemcells

    • Azure Hyper-V 538 MB
      2017-02-16T02:18:59.000Z f1a9ac31cb15605b1d049f4576f705f805ec42d8 [SHA1]

      Reported Problems: - DO NOT USE azure stemcell as it may cause data loss. - Out of memory errors still exists in Kernel 4.4.0.62 - will be fixed around Feb 20. - rsyslog version updated to 8.24.0, regressing on issue #1537 - AWS Light stemcell has incorrect name once imported - BOSH SSH does not work on BOSH Lite

      Changes: - Add more auditd rules - Fix CentOS initramfs to load necessary kernel modules - Disable boot loader login - Increasing tcp_max_sync_backlog - Disabling any DSA host keys - Add bosh_sshers group and assign it to vcap user - Only allow users in bosh_sshers group to SSH

      Agent: - Log Agent API access events in CEF format to syslog (vcap.agent topic) - Allow configuring swap size through env.bosh.swap_size (example: env.bosh.swap_size: 0) - Prepare for SHA2 releases - Allow setting fetching to work with base64 encoded user data - Do not delaycompress in logrotate

    • Azure Hyper-V 538 MB
      2016-12-05T17:32:09.000Z 2c2e3d533c42a37305b34b763bbba51319783612 [SHA1]
      • Periodic stemcell update
    • Azure Hyper-V 538 MB
      2016-12-02T16:33:48.000Z de713b69154429b049e29c2dc01d4686b8821a92 [SHA1]
    • Azure Hyper-V 538 MB
      2016-11-30T04:52:01.000Z e231ec3b868be0d9135d8d56e6dd7e89f3a5c8f9 [SHA1]
      • Periodic stemcell update
        • Includes USN-3134-1 as requested by a community member
    • Azure Hyper-V 538 MB
      2016-11-16T22:14:47.000Z 74d779aacdcd52a189e6bf308397a1dca080f5e8 [SHA1]
      • Properly includes libpam_cracklib.so to avoid errors in /var/log/auth.log
    • Azure Hyper-V 538 MB
      2016-11-10T23:56:07.000Z 82bfee12fd97a387b54e07c78c52ddf5676b9c3f [SHA1]
      • Fixes persistent disk mounting on OpenStack described in Stemcell 3308
    • Azure Hyper-V 538 MB
      2016-11-10T03:53:44.000Z 6f6cd87c5f5be34aa332073e4d33e3db369d5152 [SHA1]

      Reported Problems: - On OpenStack: Mounting persistent disks not working when using config-drive: disk while nova is configured to use a cdrom config-drive due to https://github.com/cloudfoundry/bosh/issues/1503

      Fixes: - Fixes SSH key installation issue introduced in Stemcell 3306

    • Azure Hyper-V 539 MB
      2016-11-08T17:25:21.000Z 8471bc4e8d1bbdd35452d8beb2d0a85b9fcf9501 [SHA1]

      Reported Problems - bosh-init doesn’t work with this stemcell on OpenStack and AWS due to https://github.com/cloudfoundry/bosh/issues/1500 - Booting the stemcell image directly in you IaaS (without using BOSH/bosh-init) does no longer provision the ssh key for user vcap, so you need to login differently

      Changes - Agent will now wait for monit to complete stop all processes before carrying on - Added google stemcells - Default dmesg_restrict to 1 - Disable all IPv6 configurations - Reenabled UDF kernel module for Azure - Increase root_maxkeys and maxkeys kernel configurations - Changed default hostname to bosh-stemcell instead of localhost to avoid boot problems on GCP - Lower TCP keepalive configuration by default - Mount /var/log directory to /var/vcap/data/root_log - Restrict Access to the su command - Add pam_cracklib requirements to common-password and password-auth - Enable auditing for processes that start prior to auditd - Set log rotation interval to 15 min in stemcell - Made ownership & permissions for /etc/cron* files more restrictive - Customize shell prompt to show instance name and ID - Removed floppy drives from vSphere stemcells - Removed bosh micro assets hence making bosh micro unsupported

      Misc: - Stemcells are now built through Concourse via https://main.bosh-ci.cf-app.com/teams/main/pipelines/bosh:stemcells

    • Azure Hyper-V 679 MB
      2016-09-08T07:04:34.000Z 67a39d65000ff4195b0c8283c30d92e81cea9a0a [SHA1]
    • Azure Hyper-V 688 MB
      2016-08-31T16:45:13.000Z 369566e9f25e1cc48ce565251c01091393213c51 [SHA1]