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-ubuntu-trusty-go_agent

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

# or with wget...
$ wget --content-disposition https://bosh.io/d/stemcells/bosh-azure-hyperv-ubuntu-trusty-go_agent?v=3445.11
  • Ubuntu Trusty

    • Azure Hyper-V 389 MB
      2017-09-19T21:52:10.000Z c70b6854ce1551fbeecfebabfcd6df5215513cad [SHA1]
    • Azure Hyper-V 388 MB
      2017-08-31T22:45:04.000Z 6d6a26473ac40186d8951189ec09ab0891c49de8 [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 384 MB
      2017-08-04T21:29:28.000Z 96052c751f345634bfa56693c772440d56d2b5a2 [SHA1]
      • Bump version (no change)
    • Azure Hyper-V 384 MB
      2017-07-31T22:05:45.000Z a86ffa966b020be5e1ea6da8c2d7b1ea5388f82a [SHA1]
      • Periodic Ubuntu stemcells update
    • Azure Hyper-V 385 MB
      2017-09-19T21:52:10.000Z f191e8ca5f356a125a0a4e8e0e062c3cf1f66983 [SHA1]
    • Azure Hyper-V 384 MB
      2017-09-07T23:24:49.000Z 726e33a60d71bd3c5c83ed3b0cdceb8a6e06b213 [SHA1]
    • Azure Hyper-V 384 MB
      2017-08-01T21:05:13.000Z c7d287dc667a76b941717bb13664b6ec691847dc [SHA1]
    • Azure Hyper-V 384 MB
      2017-06-30T00:29:47.000Z fe6fe64a6ce22e1b0be6f5e493dbac67fdd33546 [SHA1]
      • Bump Ubuntu stemcells for USN-3344-2: Linux kernel (Xenial HWE) vulnerabilities
    • Azure Hyper-V 384 MB
      2017-06-21T03:33:07.000Z 1af61d4b66f2abf18ca06f9dfbd048a617dcb74c [SHA1]
      • Bump Ubuntu stemcells for USN-3334-1: Linux kernel (Xenial HWE) vulnerabilities
    • Azure Hyper-V 384 MB
      2017-06-12T16:52:42.000Z a76de8db6971b041415c7efe7f5a6210d986ad75 [SHA1]
      • Bump Ubuntu stemcells for USN-3312-2 - Linux kernel vulnerabilities
    • Azure Hyper-V 384 MB
      2017-06-05T17:37:21.000Z 4980eed433f1ea43cbaf20908e136f0c711a4717 [SHA1]
      • Bump CentOS stemcells for CESA-2017:1382 - sudo vulnerability
    • Azure Hyper-V 384 MB
      2017-05-30T22:46:32.000Z e680bcfdb643d492b6bf81ec6db2d5a8512c3fe2 [SHA1]
      • Bump Ubuntu stemcells for USN-3304-1: Sudo vulnerability
    • Azure Hyper-V 384 MB
      2017-05-23T00:37:14.000Z a8b1b216bb5868b232f680970ac675dc276825b5 [SHA1]


      • 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


      • Fixed sysstat logging
      • Fixed anacron’s RANDOM_DELAY configuration


      • 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 385 MB
      2017-09-19T21:52:10.000Z cd9e971722c67858d02dca7af10b061e9aabd901 [SHA1]
    • Azure Hyper-V 385 MB
      2017-09-07T21:01:42.000Z 74e821a19547e87097894b995b56e357e8204b75 [SHA1]
    • Azure Hyper-V 385 MB
      2017-08-17T00:55:37.000Z 4b4a179771a844e7c2d7324c3451052a54bbaf9f [SHA1]
    • Azure Hyper-V 385 MB
      2017-08-11T22:45:52.000Z 458129868868d75255f577fad3e2eea83bf2b535 [SHA1]
    • Azure Hyper-V 385 MB
      2017-08-04T00:04:36.000Z 4ad9cd6ff8d8803752fb768aaa41a18de92ff75c [SHA1]
    • Azure Hyper-V 385 MB
      2017-06-30T00:43:46.000Z e0a4775a3f04ef2429ba5a66d21f6cc43008bcab [SHA1]
    • Azure Hyper-V 385 MB
      2017-06-21T02:56:58.000Z 089d4df4306bf15543a122fd5aafa0e25a06f07b [SHA1]
    • Azure Hyper-V 385 MB
      2017-05-30T23:03:27.000Z d69521b7964403a3277dab915b42eccf35040d2f [SHA1]
    • Azure Hyper-V 384 MB
      2017-05-19T23:43:53.000Z eb837915cd6e7d0df1fcdc431d0dcb17bba63779 [SHA1]
      • Periodic Ubuntu stemcells update
    • Azure Hyper-V 385 MB
      2017-05-12T19:29:47.000Z c0b59eaa16a65d981c76b34478b5016bc08c8977 [SHA1]
      • Periodic Ubuntu stemcells update
      • Run cron in BOSH Lite stemcells so that logrotation is performed
    • Azure Hyper-V 384 MB
      2017-04-25T23:14:45.000Z e495b25e2bd4ce4c255846b6f8a3c7b652c42bb7 [SHA1]
      • Bump Ubuntu stemcells for USN-3265-2: Linux kernel (Xenial HWE) vulnerabilities
    • Azure Hyper-V 384 MB
      2017-04-17T22:49:37.000Z 6aac50f7d2835352b2f21c7fd6355a22cb3998f4 [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 385 MB
      2017-04-05T21:56:53.000Z 2b4edbe3fb0414094af95f69fe020f548e5f3c8f [SHA1]
      • Bump Ubuntu stemcells for USN-3256-2: Linux kernel (HWE) vulnerability


      • Made AWS AMI backing snapshot public to support encryption of boot disks
    • Azure Hyper-V 384 MB
      2017-03-30T21:29:18.000Z 68cd5a8adaabe4d19d4d0d69bef3577b8961c11b [SHA1]
      • Bump Ubuntu stemcells for USN-3249-2: Linux kernel (Xenial HWE) vulnerability
    • Azure Hyper-V 384 MB
      2017-03-10T00:57:12.000Z 1fdcb09feba8a11f27825390d66100e668ebf517 [SHA1]
    • Azure Hyper-V 384 MB
      2017-03-08T23:51:57.000Z 9581f47332d026646fd233ad3593e01229825e5d [SHA1]
      • Bumps Ubuntu stemcells for USN-3220-2: Linux kernel (Xenial HWE) vulnerability
    • Azure Hyper-V 384 MB
      2017-02-23T02:28:14.000Z 57b206394d39ddcaea1fae6a532daa0009cda8d6 [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 384 MB
      2017-02-17T21:16:29.000Z 90830551bf5fd030cb76a50cd292804fe5d20124 [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 - will be fixed around Feb 20.

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

    • Azure Hyper-V 384 MB
      2017-02-16T02:19:06.000Z aa2488ab2437d088d57064bf19c087d1ec68b1a9 [SHA1]

      Reported Problems: - DO NOT USE azure stemcell as it may cause data loss. - Out of memory errors still exists in Kernel - 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 385 MB
      2017-09-19T21:52:10.000Z 73f9f37732c901e51bb096f4c5ef740994da9725 [SHA1]
    • Azure Hyper-V 385 MB
      2017-08-17T00:47:51.000Z 2eead587973c68a02c6fc75b84ce3333de7c80e8 [SHA1]