927660a7b6
kandra: Remove munin.
2024-02-06 21:34:56 -08:00
96d237d57e
kandra: Pull in known_hosts to the nagios user.
...
This prevents failures when new hosts are initially added to the
configuration.
2024-02-07 00:02:40 -05:00
2cbd9c2a47
kandra: Update default chrony configuration for 22.04.
2024-02-07 00:02:32 -05:00
b23d90ed62
puppet: Rename puppet/zulip_ops to puppet/kandra.
...
This makes for easier tab-completion, and also is a bit more explicit
about the expected consumer.
2024-02-06 17:56:27 -08:00
ccc106dca3
puppet: Add redis host to ~redistunnel/.ssh/known_hosts.
2024-02-06 11:34:09 -08:00
aaf3eb514d
puppet: Allow controlling known_hosts.
...
Note that this uses `ssh-keyscan` to write in the currently-observed
host fingerprint; if DNS or network is untrusted during initial puppet
apply, this can allow attackers to write their own host key, obviating
the utility of known_hosts.
We do not view this as a likely attack mechanism, since in our
deployment the network and DNS is almost certainly trusted, and if
not, the timing attack to catch only initial configuration is likely
impossible.
2024-02-06 11:34:09 -08:00
fe1fd30a58
puppet: Create redistunnel group.
...
This was left off of 1fe5e7c7da
2024-02-05 12:15:15 -08:00
dc950235e5
puppet: Raise net.core.somaxconn on redis.
2024-02-02 17:54:02 -08:00
ec59b4fd78
puppet: Enact redis' kernel config suggestions.
2024-02-02 17:54:02 -08:00
069f262e7b
puppet: Inline all sysctl settings, and always check for containers.
2024-02-02 17:54:02 -08:00
fd69f5f8e2
puppet: Call systemd reload after adding or changing a teleport service.
2024-02-02 17:54:02 -08:00
1ac6e24eaa
puppet: Rename exec resource of systemd_daemon_reload.
...
This makes it easier to put as a "notify" resource.
2024-02-02 17:54:02 -08:00
4947753bfd
puppet: Remove unused systemd_daemon_reload.
...
572443edc6
2024-02-02 17:54:02 -08:00
6e9b25d993
puppet: Add key to allow prod to write ccache on zmirrorp.
2024-02-02 17:24:12 -08:00
96b65cbeab
install-ssh-authorized-keys: Merge multiple authorized_keys secrets.
2024-02-02 17:24:12 -08:00
1567275959
install-ssh-authorized-keys: Use --check rather than another argument.
2024-02-02 17:24:12 -08:00
afa24923e5
install-ssh-authorized-keys: Enable -o pipefail to catch AWS errors.
2024-02-02 17:24:12 -08:00
a0347e76cb
install-ssh-keys: Enable -o pipefail to catch AWS errors.
2024-02-02 17:24:12 -08:00
f8a9edc382
install-ssh-*: Pass -a to rsync to preserve rights, owners, and times.
2024-02-02 17:24:12 -08:00
0bd1e2b434
puppet: Rename and limit production key distribution.
2024-02-02 17:24:12 -08:00
d910ea27fe
puppet: Allow profiles to override zulip_ops::profile::base.
2024-02-02 17:24:12 -08:00
a0e7f1296f
puppet: Increase minimum memory for multiprocess queue workers.
...
This should give some more room for systems that are still below 4GB
of RAM to use the lower-memory multithreaded mode, which is less
likely to have OOM kills (a very bad experience).
There should be little cost, as few systems are likely allocated with
memory in this range.
2024-02-02 13:45:25 -08:00
43c0c77610
puppet: Update rules for number of uwsgi processes.
...
The defaults for how many uwsgi processes to run no longer depend on
the queue processor mode, but instead the total memory on the system.
2024-02-02 13:45:25 -08:00
0e6f013e03
puppet: Drop mosh package -- teleport is now the supported login.
2024-01-31 16:41:04 -08:00
16117e6139
puppet: Drop now-unnecessary common-session change.
2024-01-31 16:41:04 -08:00
9810200d78
puppet: Stop writing custom sshd_config.
...
The only relevant changes are `PasswordAuthentication no` (which
is now the default) and `MaxStartups 40:50:60` (which is now
unneccesary due to autossh tunnels.
2024-01-31 16:41:04 -08:00
1fe5e7c7da
puppet: Use a dedicated user for redis tunneling.
2024-01-31 16:41:04 -08:00
795621771f
puppet: Pull authorized_keys from AWS secretsmanager.
2024-01-31 16:41:04 -08:00
ff00c01538
bootstrap-aws-installer: Pull all keys from secretsmanager.
2024-01-31 16:41:04 -08:00
65d2e855a0
puppet: Switch removal of MOTD directories for .hushlogin.
...
Rather than have to keep resolving apt conflicts with the lack of
`/etc/update-motd.d`, have each user disable the motds with a
`.hushlogin` file.
2024-01-31 16:41:04 -08:00
1bddf41731
puppet: Factor out creation of basic user dotfiles.
2024-01-31 16:41:04 -08:00
69ef808d7b
puppet: Use IAM Roles Anywhere to get AWS credentials outside EC2.
2024-01-31 16:41:04 -08:00
16305761ac
puppet: Use IAM join method, when possible.
2024-01-31 16:41:04 -08:00
dbb60dbeb9
puppet: Factor out $is_ec2, clarify comments.
2024-01-31 16:41:04 -08:00
6902d5db47
install-aws-cli: Also install and keep up to date using Puppet.
...
We previously only did this install on the developer machine and on
initial boot. Also run it from puppet to make sure we keep the binary
up-to-date.
2024-01-31 16:41:04 -08:00
e49fc8873b
install-aws-cli: Check version before no-op'ing.
...
We previously just ensured that _a_ version was installed. Since we
were only using this at initial boot, that was all that was required.
2024-01-31 16:41:04 -08:00
bd87f53c86
install-aws-server: Build a tool to smuggle scripts inline in the bootdata.
2024-01-31 16:41:04 -08:00
1a84a20ca0
install-aws-cli: Add a shebang so it is callable directly.
2024-01-31 16:41:04 -08:00
38bf1c5d22
install-aws-cli: Move into puppet files.
2024-01-31 16:41:04 -08:00
7eeec09425
puppet: Include epmd on the list of do-not-auto-restart services.
...
This brings it into parity with the list of unattended-upgrade
packages.
2024-01-31 16:41:04 -08:00
d02354be6c
puppet: statuspage-pusher uses zulip.conf for page_id.
...
This was changed midway through the implementation, from reading it
from `zulip-secrets.conf`, and a couple locations still reference the
secrets path.
2024-01-25 15:37:03 -08:00
cd565058cd
puppet: Add vector pipelines for other Akamai SQS queues.
2024-01-25 15:36:40 -08:00
39046afbaf
nagios: Remove locks alert.
...
Using locks is not itself a bad sign; there is no need to alert on it,
as there is no value which can be chosen as being "too many."
2024-01-25 13:14:08 -08:00
147fe19c1f
puppet: Fix grafana tarball path.
...
Grafana 10.2.1 and up package their tarball with a `grafana-v10.2.1`
and not `grafana-10.2.1` as previously.
2024-01-25 13:03:05 -08:00
004563b380
puppet: Fix bugs in sysctl configuration.
2024-01-23 09:32:15 -08:00
3bf047beb8
iptables: Skip conntrack for DNS queries.
...
Under heavy request load, it is possible for the conntrack kernel
table to fill up (by default, 256k connections). This leads to DNS
requests failing because they cannot make a new conntrack entry.
Allow all port-53 UDP traffic in and out without connection tracking.
This means that unbound port-53 traffic is no longer filtered out by
the on-host firewall -- but it is already filtered out at the border
firewall, so this does not change the external network posture.
`systemd-resolve` also only binds to 127.0.0.53 on the loopback
interface, so there is no server to attack on inbound port 53.
2024-01-10 09:07:00 -08:00
d18de3e0a4
puppet: Add a knob to adjust conntrack max size.
2024-01-10 09:07:00 -08:00
588aec96f9
puppet: Factor out a sysctl operator.
2024-01-10 09:07:00 -08:00
4da87524ff
nagios: Remove provisioning of zulip contact alias.
...
fcf096c52e
2024-01-09 16:01:07 -08:00
b000328ba5
puppet: Adjust uptrack permissions and ownership to match package's.
...
This reverts a759d26a327cd4337d68eaa1d45d6a69edc9161c; apparently the
package has switched back.
2024-01-09 12:31:02 -08:00
Alex Vandiver
Tim Abbott