Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

NTP docs fix #875

Open
wants to merge 6 commits into
base: master
Choose a base branch
from
Open

NTP docs fix #875

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
0f1e704
Update ntp.md
zhenyatsk Nov 27, 2024
a3095c0
Update ntp.md
zhenyatsk Nov 27, 2024
3e17458
Delete en/_tutorials/infrastructure-management/ntp.md
zhenyatsk Nov 27, 2024
a543352
Delete en/_tutorials/infrastructure/ntp.md
zhenyatsk Nov 27, 2024
37a6d4e
Create ntp.md
zhenyatsk Nov 27, 2024
391152d
Update ntp.md
zhenyatsk Nov 27, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
171 changes: 90 additions & 81 deletions en/_tutorials/infrastructure-management/ntp.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,9 @@ You can set up time synchronization on {{ compute-full-name }} [VMs](../../compu
The VM time is synced to correctly work with other servers and applications, process data in real time, store exact time data in system logs, etc.

NTP servers recommended for syncing:
* `0.ru.pool.ntp.org`
* `1.ru.pool.ntp.org`
* `ntp0.NL.net`
* `ntp2.vniiftri.ru`
* `ntp.ix.ru`
* `ntps1-1.cs.tu-berlin.de`

Expand Down Expand Up @@ -44,78 +45,78 @@ The cost of clock synchronization using NTP includes fees for computing resource
## Prepare the infrastructure {#prepare-infrastructure}

1. If you do not have a VM, [create](../../compute/operations/#vm-create) one.
1. [Attach](../../compute/operations/vm-control/vm-attach-public-ip.md) a public IP address to the VM.
1. [Assign](../../compute/operations/vm-control/vm-attach-public-ip.md) a public IP address to the VM.

## Set up synchronization {#setup-ntp}

{% list tabs %}
{% list tabs group=operating_system %}

- Linux (systemd)
- Linux (systemd) {#linux-systemd}

On Linux-based VMs, enable a DHCP client with the `42` (`Network Time Protocol Servers`) option. The DHCP client automatically applies the list of time synchronization servers sent by the DHCP server. In {{ compute-name }} images, operating systems are preset properly.
On Linux-based VMs, make sure to enable a DHCP client with the `42` (`Network Time Protocol Servers`) option. The DHCP client automatically applies the list of time synchronization servers sent by the DHCP server. In {{ compute-name }} images, operating systems are preset properly.

In the system settings, specify the backup time synchronization servers to use if the DHCP server is unavailable.
In the system settings, specify the backup time synchronization servers to use if the DHCP server is unavailable.

{% note info %}
{% note info %}

The `systemd-timesyncd` service may conflict with `ntpd` if they are running simultaneously. To see what services are running, use the `ps -eF` command. You can either delete the `ntpd` service or use it to set up time synchronization (see the **Linux (ntpd)** tab).
`systemd-timesyncd` may conflict with `ntpd` if they are running simultaneously. To see which services are running, use the `ps -eF` command. You can either delete `ntpd` or use it to set up time synchronization (see the **Linux (ntpd)** tab).

{% endnote %}
{% endnote %}

To set up time synchronization:
1. [Connect](../../compute/operations/vm-connect/ssh.md#vm-connect) to the VM over SSH.
1. Open the `/etc/systemd/timesyncd.conf` file by running the following command in the terminal:
To set up time synchronization:
1. [Connect](../../compute/operations/vm-connect/ssh.md#vm-connect) to the VM over SSH.
1. Open the `/etc/systemd/timesyncd.conf` file by running the following command in the terminal:

```bash
sudo nano /etc/systemd/timesyncd.conf
```

1. Specify the addresses of the recommended servers in the `FallbackNTP=` parameter of the `[Time]` section, e.g.:

1. Specify the addresses of the recommended servers in the `FallbackNTP=` parameter of the `[Time]` section, such as the following:

```text
FallbackNTP=ntp0.NL.net ntp2.vniiftri.ru ntp.ix.ru ntps1-0.eecsit.tu-berlin.de
FallbackNTP=0.ru.pool.ntp.org 1.ru.pool.ntp.org ntp0.NL.net ntp.ix.ru ntps1-1.cs.tu-berlin.de
```



1. Set `UseNTP=true` in the `systemd.network` configuration file. It is usually located in the `/etc/systemd/network/` or `/var/lib/systemd/network/` directory.
1. In the `systemd.network` configuration file, specify the `UseNTP=true` parameter. The configuration file is usually located in the `/etc/systemd/network/` or `/var/lib/systemd/network/` directory.

You can also use the `networkd.conf` file in the `/etc/systemd/` directory.
1. Restart the time synchronization service:
1. Restart the time synchronization service:

```bash
sudo systemctl restart systemd-timesyncd
```

- Linux (ntpd)
- Linux (ntpd) {#linux-ntpd}

On Linux-based VMs, enable a DHCP client with the `42` (`Network Time Protocol Servers`) option. The DHCP client automatically applies the list of time synchronization servers sent by the DHCP server. In {{ compute-name }} images, operating systems are preset properly.
On Linux-based VMs, make sure to enable a DHCP client with the `42` (`Network Time Protocol Servers`) option. The DHCP client automatically applies the list of time synchronization servers sent by the DHCP server. In {{ compute-name }} images, operating systems are preset properly.

In the system settings, specify the backup time synchronization servers to use if the DHCP server is unavailable.
In the system settings, specify the backup time synchronization servers to use if the DHCP server is unavailable.

{% note info %}
{% note info %}

The `ntpd` service may conflict with `systemd-timesyncd` if they are running simultaneously. To see what services are running, use the `ps -eF` command. You can either delete the `systemd-timesyncd` service or use it to set up time synchronization (see the **Linux (systemd)** tab).
`ntpd` may conflict with `systemd-timesyncd` if they are running simultaneously. To see which services are running, use the `ps -eF` command. You can either delete `systemd-timesyncd` or use it to set up time synchronization (see the **Linux (systemd)** tab).

{% endnote %}
{% endnote %}

To set up time synchronization:
1. [Connect](../../compute/operations/vm-connect/ssh.md#vm-connect) to the VM over SSH.
1. Install `ntpd` by running the following command in the terminal:
To set up time synchronization:
1. [Connect](../../compute/operations/vm-connect/ssh.md#vm-connect) to the VM over SSH.
1. Install `ntpd` by running the following command in the terminal:

```bash
sudo apt-get install ntp
```

1. Open the `/etc/ntp.conf` file:
1. Open the `/etc/ntp.conf` file:

```bash
sudo nano /etc/ntp.conf
```

1. Specify the recommended server addresses. Comment out default server addresses with <q>#</q> at the beginning of the relevant line, for example:

1. Specify the recommended server addresses. Comment out default server addresses with `#` at the beginning of the relevant line. Here is an example:

```text
# Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board
Expand All @@ -125,26 +126,27 @@ The cost of clock synchronization using NTP includes fees for computing resource
# server 1.ubuntu.pool.ntp.org
# server 2.ubuntu.pool.ntp.org
# server 3.ubuntu.pool.ntp.org
server 0.ru.pool.ntp.org
server 1.ru.pool.ntp.org
server ntp0.NL.net
server ntp2.vniiftri.ru
server ntp.ix.ru
server ntps1-0.eecsit.tu-berlin.de
server ntps1-1.cs.tu-berlin.de
```



1. Restart the time synchronization service:
1. Restart the time synchronization service:

```bash
sudo service ntp restart
```

- Windows Server
- Windows Server {#windows}

To set up time synchronization:
1. [Connect](../../compute/operations/vm-connect/rdp.md) to the VM via RDP.
1. Run cmd or PowerShell as an administrator.
1. Stop the Windows Time service by running the following command:
To set up time synchronization:
1. [Connect](../../compute/operations/vm-connect/rdp.md) to the VM via RDP.
1. Run cmd or PowerShell as an administrator.
1. Stop the Windows Time service by running the following command:

```powershell
net stop w32time
Expand All @@ -157,11 +159,12 @@ The cost of clock synchronization using NTP includes fees for computing resource
The Windows Time service was stopped successfully.
```

1. Specify the recommended server addresses, e.g.:
1. Specify the recommended server addresses, e.g.:



```powershell
w32tm /config /syncfromflags:manual /manualpeerlist:"ntp0.NL.net ntp2.vniiftri.ru ntp.ix.ru ntps1-0.eecsit.tu-berlin.de"
w32tm /config /syncfromflags:manual /manualpeerlist:"0.ru.pool.ntp.org 1.ru.pool.ntp.org ntp0.NL.net ntp.ix.ru ntps1-1.cs.tu-berlin.de"
```


Expand All @@ -172,7 +175,7 @@ The cost of clock synchronization using NTP includes fees for computing resource
The command completed successfully.
```

1. Specify that the VM is a reliable time source:
1. Specify that the VM is a reliable time source:

```powershell
w32tm /config /reliable:yes
Expand All @@ -184,7 +187,7 @@ The cost of clock synchronization using NTP includes fees for computing resource
The command completed successfully.
```

1. Start the Windows Time service:
1. Start the Windows Time service:

```powershell
net start w32time
Expand All @@ -201,65 +204,71 @@ The cost of clock synchronization using NTP includes fees for computing resource

## Check the synchronization {#check-ntp}

{% list tabs %}
{% list tabs group=operating_system %}

- Linux (systemd)
- Linux (systemd) {#linux-systemd}

Run this command:
Run this command:

```bash
timedatectl
```
```bash
timedatectl
```

Result:
Result:

```bash
...
System clock synchronized: yes
NTP service: active
...
```
```bash
...
System clock synchronized: yes
NTP service: active
...
```

- Linux (ntpd)
- Linux (ntpd) {#linux-ntpd}

Run this command:
Run this command:

```bash
sudo ntpq -p
```
```bash
sudo ntpq -p
```

Result:
Result:


```bash
remote refid st t when poll reach delay offset jitter
==============================================================================
+ntp0.nl.uu.net .GPS. 1 u 111 128 377 41.220 1.662 0.214
+ntp2.vniiftri.r .MRS. 1 u 99 128 377 7.540 1.697 0.417
*ntp.ix.ru .GPS. 1 u 45 128 377 4.343 1.456 0.296
+ntps1-0.eecsit. .PPS. 1 u 36 128 377 30.128 1.258 0.265
```
```bash
remote refid st t when poll reach delay offset jitter
==============================================================================
ntp.ubuntu.com .POOL. 16 p - 64 0 0.000 +0.000 0.000
time.cloudflare 10.87.12.180 3 u 4 64 1 7.870 -0.924 0.000
195.218.227.230 85.21.78.23 3 u - 64 1 33.619 +1.099 0.000
ntp0.nl.uu.net .GPS. 1 u 4 64 1 46.894 -1.309 0.000
ntp2.vniiftri.r .MRS. 1 u 2 64 1 10.392 -1.075 0.000
ntp.ix.ru .GLN. 1 u 2 64 1 6.511 -0.738 0.000
ntps1-1.eecsit. .GPS. 1 u 4 64 1 33.026 -0.646 0.000
alphyn.canonica 132.163.96.1 2 u 3 64 1 124.037 -1.936 0.000
185.125.190.57 201.68.88.106 2 u 1 64 1 50.676 -0.090 0.000
185.125.190.58 145.238.203.14 2 u - 64 1 57.460 -0.464 0.000
```



- Windows Server
- Windows Server {#windows}

Run the command below and specify the VM name:
Run the command below and specify the VM name:

```powershell
w32tm /query /computer:<VM_name> /configuration
```
```powershell
w32tm /query /configuration
```

Result:
Result:


```powershell
...
[TimeProviders]
...
NtpServer: ntp0.NL.net ntp2.vniiftri.ru ntp.ix.ru ntps1-0.eecsit.tu-berlin.de (Local)
...
```
```powershell
...
[TimeProviders]
...
NtpServer: 0.ru.pool.ntp.org 1.ru.pool.ntp.org ntp0.NL.netntp.ix.ru ntps1-1.cs.tu-berlin.de (Local)
...
```



Expand Down
Loading